General

  • Target

    BaffFree (1).rar

  • Size

    14.0MB

  • Sample

    240316-11dcqsde2w

  • MD5

    1d5acc5687edcd169ff1f668fb614668

  • SHA1

    5ef489cd47893a888286c8cfc5cf565945c44628

  • SHA256

    d4f5d067ff567af50017ad3f0997b6aaea6fc8e3305adf57de560e03536e8e86

  • SHA512

    8aaff2444d1bc3b308e0aa9761e97f3dd497df76a1fe68bb11560e06d2f73297c1fcf1bce74e0bab1e016ef52109a45c995ce750a3be5fde0cf6a75ee4c9b7d1

  • SSDEEP

    196608:7nw75pSvvDy2bpmAa72xIvRt5snPdFK5Jdr9hj+i4etUqUFc/muT8EgJHZtmiC:7wCXbi7EIvRmPdFIhjF4eGnuT4DmP

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1218255752314097764/pf1l_fyX4Y944q-tMNsmbSq2cfDBpqCBXuTvF0vyF76tkTcn3FOYasjrq_iM6NffJOYF

Extracted

Family

xworm

C2

approved-supports.gl.at.ply.gg:45098

Attributes
  • Install_directory

    %AppData%

  • install_file

    rat.exe

Targets

    • Target

      BaffFree (1).rar

    • Size

      14.0MB

    • MD5

      1d5acc5687edcd169ff1f668fb614668

    • SHA1

      5ef489cd47893a888286c8cfc5cf565945c44628

    • SHA256

      d4f5d067ff567af50017ad3f0997b6aaea6fc8e3305adf57de560e03536e8e86

    • SHA512

      8aaff2444d1bc3b308e0aa9761e97f3dd497df76a1fe68bb11560e06d2f73297c1fcf1bce74e0bab1e016ef52109a45c995ce750a3be5fde0cf6a75ee4c9b7d1

    • SSDEEP

      196608:7nw75pSvvDy2bpmAa72xIvRt5snPdFK5Jdr9hj+i4etUqUFc/muT8EgJHZtmiC:7wCXbi7EIvRmPdFIhjF4eGnuT4DmP

    • Detect Umbral payload

    • Detect Xworm Payload

    • Detect ZGRat V1

    • Modifies WinLogon for persistence

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

    • Xworm

      Xworm is a remote access trojan written in C#.

    • ZGRat

      ZGRat is remote access trojan written in C#.

    • Creates new service(s)

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Stops running service(s)

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • 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.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks