General

  • Target

    officedeploymenttool_18227-20162.exe

  • Size

    37.5MB

  • Sample

    250201-wjr3catlht

  • MD5

    d85711a9d52862c3e538d79217244059

  • SHA1

    3ed74e38b09b34db3add5fb2c1f4debb66651987

  • SHA256

    b84d06eb8b490a54bdd252a58d25eb54f5580018ecbf3066e0cd5d03ef284c96

  • SHA512

    7858369ea6aead310ce6524699301958167914453e7d83849b62088e58c8ef318a75e14da637434340f15e01acbe623337a7d1a06e15ea18c3c32b15d8e843ae

  • SSDEEP

    786432:vhP/Hle221VnfaWCXcbWDMzISiBddts4s0ACgz27e6fg8/KQxg6U5SeE+nz2E:vBlVsCFhDMzwds4s0oZ+g8CQxfYX6

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

Cyka

C2

mj2025.ddns.net:5552

Mutex

c6c0c67fa02a1b5dbba63788457d850d

Attributes
  • reg_key

    c6c0c67fa02a1b5dbba63788457d850d

  • splitter

    |'|'|

Targets

    • Target

      officedeploymenttool_18227-20162.exe

    • Size

      37.5MB

    • MD5

      d85711a9d52862c3e538d79217244059

    • SHA1

      3ed74e38b09b34db3add5fb2c1f4debb66651987

    • SHA256

      b84d06eb8b490a54bdd252a58d25eb54f5580018ecbf3066e0cd5d03ef284c96

    • SHA512

      7858369ea6aead310ce6524699301958167914453e7d83849b62088e58c8ef318a75e14da637434340f15e01acbe623337a7d1a06e15ea18c3c32b15d8e843ae

    • SSDEEP

      786432:vhP/Hle221VnfaWCXcbWDMzISiBddts4s0ACgz27e6fg8/KQxg6U5SeE+nz2E:vBlVsCFhDMzwds4s0oZ+g8CQxfYX6

    • Njrat family

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Xmrig family

    • njRAT/Bladabindi

      Widely used RAT written in .NET.

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner payload

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

    • Contacts a large (960) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Modifies Windows Firewall

    • Stops running service(s)

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Clipboard Data

      Adversaries may collect data stored in the clipboard from users copying information within or between applications.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Drops file in System32 directory

    • Enumerates processes with tasklist

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v15

Tasks