Resubmissions

27-11-2022 16:57

221127-vgdw9sgf4w 10

27-11-2022 16:41

221127-t64csafg8y 10

Analysis

  • max time kernel
    155s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-11-2022 16:41

General

  • Target

    568097c7465680d1fcede9788b1226266b28f86522cc8630d1f7bedb2c84f8f4.exe

  • Size

    54KB

  • MD5

    828c84060984c00605ac9c89d83dff71

  • SHA1

    eee2dfa35ef74d9d27dfd2bc7d0d45f5f5e85c1a

  • SHA256

    568097c7465680d1fcede9788b1226266b28f86522cc8630d1f7bedb2c84f8f4

  • SHA512

    2caa482833ef4fc50217d6276fd52aebd6d102a3410fc3c41280e170ca38e87258761f710ab34a2114373506fb1751a9c501ad404e89405d01794fdef7a72d4e

  • SSDEEP

    768:Pn2MHF3lFdS7kxStmaiTrM+rMRa8NugPtQvViHqcCr:PnpF3lPS4xStEs+gRJNX0Dxr

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

Ratatouille

C2

nndmb-42891.portmap.host:42891

Mutex

cd82c2cc4ef9f6cee6f8aa9412365ea4

Attributes
  • reg_key

    cd82c2cc4ef9f6cee6f8aa9412365ea4

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops autorun.inf file 1 TTPs 3 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 31 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\568097c7465680d1fcede9788b1226266b28f86522cc8630d1f7bedb2c84f8f4.exe
    "C:\Users\Admin\AppData\Local\Temp\568097c7465680d1fcede9788b1226266b28f86522cc8630d1f7bedb2c84f8f4.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:2868
    • C:\Windows\Themer.exe
      "C:\Windows\Themer.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Drops autorun.inf file
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4788
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Windows\Themer.exe" "Themer.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:1240

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\Themer.exe

    Filesize

    54KB

    MD5

    828c84060984c00605ac9c89d83dff71

    SHA1

    eee2dfa35ef74d9d27dfd2bc7d0d45f5f5e85c1a

    SHA256

    568097c7465680d1fcede9788b1226266b28f86522cc8630d1f7bedb2c84f8f4

    SHA512

    2caa482833ef4fc50217d6276fd52aebd6d102a3410fc3c41280e170ca38e87258761f710ab34a2114373506fb1751a9c501ad404e89405d01794fdef7a72d4e

  • C:\Windows\Themer.exe

    Filesize

    54KB

    MD5

    828c84060984c00605ac9c89d83dff71

    SHA1

    eee2dfa35ef74d9d27dfd2bc7d0d45f5f5e85c1a

    SHA256

    568097c7465680d1fcede9788b1226266b28f86522cc8630d1f7bedb2c84f8f4

    SHA512

    2caa482833ef4fc50217d6276fd52aebd6d102a3410fc3c41280e170ca38e87258761f710ab34a2114373506fb1751a9c501ad404e89405d01794fdef7a72d4e

  • memory/1240-139-0x0000000000000000-mapping.dmp

  • memory/2868-132-0x0000000074E90000-0x0000000075441000-memory.dmp

    Filesize

    5.7MB

  • memory/2868-133-0x0000000074E90000-0x0000000075441000-memory.dmp

    Filesize

    5.7MB

  • memory/2868-138-0x0000000074E90000-0x0000000075441000-memory.dmp

    Filesize

    5.7MB

  • memory/4788-134-0x0000000000000000-mapping.dmp

  • memory/4788-137-0x0000000074E90000-0x0000000075441000-memory.dmp

    Filesize

    5.7MB

  • memory/4788-140-0x0000000074E90000-0x0000000075441000-memory.dmp

    Filesize

    5.7MB