Iranian state-sponsored APT group MuddyWater targeting organizations via malicious executables

THREAT LEVEL: Red.

For a detailed advisory, download the pdf file here.

United States Cyber Command (USCYBERCOM) and CISA has warned of an ongoing cyber attack by Iranian state sponsored actor named as MuddyWater. This APT group is currently targeting Middle Eastern countries and has also targeted European and North American nations.

The Iranian-backed MuddyWater hacking group is conducting a new malicious campaign targeting private organizations and governmental institutions in Turkey and Middle East. MuddyWater actors have recently been observed using various malware variants of PowGoop, Small Sieve, Canopy (also known as Starwhale), Mori, and POWERSTATS—for loading malware, backdoor access, persistence and exfiltration

MuddyWater actors have been observed exploiting publicly disclosed vulnerabilities and employing open-source tools and strategies to gain access to sensitive data on victims’ systems and deploy ransomware. The current attacks are carried out by Muddywater in two different ways. The first method is carried out by crafting a malicious PDF file with an embedded button that, when clicked, downloads an XLS file. The malicious VBA macros in the XLS documents will subsequently commence the infection process and establish persistence by generating a new Registry key. Simultaneously, a VBScript is downloaded using a PowerShell downloader to get the primary payload from the C2. The second infection chain uses a specially crafted EXE file rather than an XLS file, but it still uses the PowerShell downloader, the intermediate VBScript, and inserts a new registry key to obtain persistence.

The Techniques commonly used by Muddywater are:

TA0043 – Reconnaissance

TA0042 – Resource Development

TA0001 – Initial Access

TA0002 – Execution

TA0003 – Persistence

TA0004 – Privilege Escalation

TA0005 – Defense Evasion

TA0006 – Credential Access

TA0007 – Discovery

TA0008 – Lateral Movement

TA0009 – Collection

TA0011 – Command and Control

TA0010 – Exfiltration

T1140: Deobfuscate/Decode Files or Information

T1041: Exfiltration Over C2 Channel

T1203: Exploitation for Client Execution

T1083: File and Directory Discovery

T1105: Ingress Tool Transfer

T1047: Windows Management Instrumentation

T1104: Multi-Stage Channels

T1027: Obfuscated Files or Information

T1057: Process Discovery

T1219: Remote Access Software

T1113: Screen Capture

T1518: Software Discovery

T1082: System Information Discovery

T1016: System Network Configuration Discovery

T1049: System Network Connections Discovery

T1033: System Owner/User Discovery

T1555: Credentials from Password Stores

T1548.002: Abuse Elevation Control Mechanism: Bypass User Account Control

T1087.002: Account Discovery: Domain Account

T1583.006: Acquire Infrastructure: Web Services

T1071.001: Application Layer Protocol: Web Protocols

T1560.001: Archive Collected Data: Archive via Utility

T1547.001: Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder

T1059.001: Command and Scripting Interpreter: PowerShell

T1059.003: Command and Scripting Interpreter: Windows Command Shell

T1059.005: Command and Scripting Interpreter: Visual Basic

T1059.006: Command and Scripting Interpreter: Python

T1059.007: Command and Scripting Interpreter: JavaScript

T1589.002: Gather Victim Identity Information: Email Addresses

T1562.001: Impair Defenses: Disable or Modify Tools

T1559.001: Inter-Process Communication: Component Object Model

T1559.002: Inter-Process Communication: Dynamic Data Exchange

T1036.005: Masquerading: Match Legitimate Name or Location

T1559.001: Inter-Process Communication: Component Object Model

T1559.002: Inter-Process Communication: Dynamic Data Exchange

T1036.005: Masquerading: Match Legitimate Name or Location

T1027.003: Steganography

T1027.004: Compile After Delivery

T1588.002: Obtain Capabilities: Tool

T1137.001: Office Application Startup: Office Template Macros

T1003.001: OS Credential Dumping: LSASS Memory

T1003.004: OS Credential Dumping: LSA Secrets

T1003.005: OS Credential Dumping: Cached Domain Credentials

T1566.001: Phishing: Spearphishing Attachment

T1566.002: Phishing: Spearphishing Link

T1555.003: Credentials from Web Browsers

T1132.001: Data Encoding: Standard Encoding

T1053.005: Scheduled Task/Job: Scheduled Task

T1218.003: Signed Binary Proxy Execution: CMSTP

T1218.005: Signed Binary Proxy Execution: Mshta

T1218.011: Signed Binary Proxy Execution: Rundll32

T1053.005: Scheduled Task/Job: Scheduled Task

T1518.001: Security Software Discovery

T1090.002: Proxy: External Proxy

T1559.001: Inter-Process Communication: Component Object Model

T1559.002: Inter-Process Communication: Dynamic Data Exchange

T1036.005: Masquerading: Match Legitimate Name or Location

T1552.001: Unsecured Credentials: Credentials In Files

T1204.001: User Execution: Malicious Link

T1204.002: User Execution: Malicious File

T1102.002: Web Service: Bidirectional Communication

T1574.002: Hijack Execution Flow: DLL Side-Loading

Actor Details

Vulnerability Details

Indicators of Compromise (IoCs)

Type

Value

SHA-256

8d6ed63f2ffa053a683810f5f96c76813cdca2e188f16d549e002b2f63cee001, 42aa5a474abc9efd3289833eab9e72a560fee48765b94b605fac469739a515c1, d3ecc4137fc9a6d7418b4780864baf64cf7417d7badf463dff6ea48cd455915b, 9991b185c9e9732501e0c2bd841e32a4022f0735a0527150bc8e64ac363d409d, d9de66497ad189d785d7535ab263e92ffad81df20b903c5e1d36859b4ed38b6d, 5cdc7dd6162a8c791d50f5b2c5136d7ba3bf417104e6096bd4a2b76ea499a2f4, 26ed7e89b3c5058836252e0a8ed9ec6b58f5f82a2e543bc6a97b3fd17ae3e4ec, a8701fd6a5eb45e044f8bf150793f4189473dde46e0af8314652f6bf670c0a34, b726f4dd745891070f2e516d5d4e4f2f1ce0bf3ff685dc3800455383f342e54d, c9931382f844b61a002f83db1ae475953bbab449529be737df1eee8b3065f6eb, fcdd38ff378605c66333429d9df2242fbce25a5f69f4d6d4c11d9613bcb409b0, c13cb1c9277324534075f807a3fcd24d0d3c024197c7437bf65db78f6a987f7a, 450302fb71d8e0e30c80f19cfe7fb7801b223754698cac0997eb3a3c8e440a48, b1e30cce6df16d83b82b751edca57aa17795d8d0cdd960ecee7d90832b0ee76c, 921b4520b75fcd0071944a483d738223b222ba101e70f2950fbfbc22afbdb5d0, d7de68febbbdb72ff820f6554afb464b5c204c434faa6ffe9b4daf6b691d535f, 8b9be9e4d18c5fc71cd12dbfd60ea41eb88a07497e96faa2ba20fdc929b32c0b,

Type	Value
SHA-256	a69fee382cf86f9e457e0688932cbd00671d0d5218f8043f1ee385278ee19c8c, 63e404011aeabb964ce63f467be29d678d0576bddb72124d491ab5565e1044cf, 6910ddb58aee9a77e7bb9cadef9e6280a9b5b495edf0b6538cf8bdc1db8b1f4c, d851badfcf3b3a8b4210bdb33948d0d1d918ec6bf0f1f85cbae6bb8feec7cd74, aa72f1543d4a4e6ecbfc2da0167f5601c5c692bed73243cf01f616bc4af68afe, 7dc49601fa6485c3a2cb1d519794bee004fb7fc0f3b37394a1aef6fceefec0c8, a69fee382cf86f9e457e0688932cbd00671d0d5218f8043f1ee385278ee19c8c, 8f255a1f2e17828a5b9205d6991e2c85c3320311da28048785262396cbc568c7, cddd5514b7ed3d33ff8eaa16b7b71621ced857755246683e0d28c4650ea744bf, b4d0161ecab5a7847d325c88ce1a4fc2ca2e11fad0b77638b63ae1781c8b5793, f6569039513e261ba9c70640e6eb8f59a0c72471889d3c0eaba51bdebb91d285, 28f2198f811bbd09be31ad51bac49ba0be5e46ebf5c617c49305bb7e274b198c, 04d6ed9c6d4a37401ad3c586374f169b0aa8d609710bdcf5434d39e0fd4ed9bd, 69e3a454c191ee38663112cf5358a54cca1229188087ed18e92bc9c59b014912, dc28b5e878152b5305b8d251019895caa56a7a95a68eccb89a6ecc41da8aadb9, dd7ee54b12a55bcc67da4ceaed6e636b7bd30d4db6f6c594e9510e1e605ade92, 4b2862a1665a62706f88304406b071a5c9a6b3093daadc073e174ac6d493f26c, 026868713d60e6790f41dc7046deb4e6795825faa903113d2f22b644f0d21141, 7de663524b63b865e57ffc3eb4a339e150258583fdee6c2c2ca4dd7b5ed9dfe7, 6e50e65114131d6529e8a799ff660be0fc5e88ec882a116f5a60a2279883e9c4, ef385ed64f795e106d17c0a53dfb398f774a555a9e287714d327bf3987364c1b, d77e268b746cf1547e7ed662598f8515948562e1d188a7f9ddb8e00f4fd94ef0, ed988768f50f1bb4cc7fb69f9633d6185714a99ecfd18b7b1b88a42a162b0418, c2badcdfa9b7ece00f245990bb85fb6645c05b155b77deaf2bb7a2a0aacbe49e, f10471e15c6b971092377c524a0622edf4525acee42f4b61e732f342ea7c0df0, cc67e663f5f6cea8327e1323ecdb922ae8e48154bbf7bd3f9b2ee2374f61c5d6, fb69c821f14cb0d89d3df9eef2af2d87625f333535eb1552b0fcd1caba38281f, 202bf7a4317326b8d0b39f1fa19304c487128c8bd6e52893a6f06f9640e138e6, 3fe9f94c09ee450ab24470a7bcd3d6194d8a375b3383f768662c1d561dab878d, a500e5ab8ce265d1dc8af1c00ea54a75b57ede933f64cea794f87ef1daf287a1
IPs	5[.]199[.]133[.]149, 88[.]119[.]170[.]124, 185[.]183[.]97[.]25, 95[.]181.161.81, 178[.]32[.]30[.]3
URLs	hxxp://185.118.167[.]120/, hxxp://137.74.131[.]16:443/, hxxp://185.141.27[.]211:443/, hxxp://149.202.242[.]84:443/, hxxp://172.245.81[.]135:10196/Geq5P3aFpaSrK3PZtErNgUsVCfqQ9kZ9/Pan-op/gallery.jpg, hxxps://snapfile[.]org/d/c7817a35554e88572b7b, hxxps://snapfile[.]org/d/0c88a47c3160338bbb68, hxxp://snapfile[.]org/756a12c43a0fb8d56fbf, hxxps://snapfile[.]org/5bc3985cf17565a97dbd, hxxps://snapfile[.]org/55e1c83e920bb7dc949c, hxxp://canarytokens[.]com/about/d3g23n4gdcrep20q3wzm153xn/index.html, hxxp://canarytokens[.]com/tags/traffic/images/azp6ai8pg5aq0c619ur0qzi6h/, hxxp://canarytokens[.]com/tags/traffic/images/azp6ai8pg5aq0c619ur0qzi6h/post.jsp