Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/11/2022, 17:54

General

  • Target

    c6d0e07fcebfbea85ffc77c796f87d47048d24e39d0c81e5b881cffcb2aba29e.exe

  • Size

    37KB

  • MD5

    2817c011989e9651e3b2bc75e2bb0190

  • SHA1

    254230a43c2f92381595a6bb03fe75234efe191e

  • SHA256

    c6d0e07fcebfbea85ffc77c796f87d47048d24e39d0c81e5b881cffcb2aba29e

  • SHA512

    bbc58966bd9c076e1c992b44fa6024a79b3378594a6c548dcf8c17f5fb4c2304ffa0c07addc7e42711fc829f254fd192954807280ea42c4b4ce6880a0f05d309

  • SSDEEP

    384:fOveoixJhl7OHg1WykrppPl48uiX60rAF+rMRTyN/0L+EcoinblneHQM3epzXlNi:2v+R1NkrppqFidrM+rMRa8Nuzwt

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

5.tcp.eu.ngrok.io:17656

Mutex

5c1305f84d4de84c49a562943d8b6467

Attributes
  • reg_key

    5c1305f84d4de84c49a562943d8b6467

  • 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.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c6d0e07fcebfbea85ffc77c796f87d47048d24e39d0c81e5b881cffcb2aba29e.exe
    "C:\Users\Admin\AppData\Local\Temp\c6d0e07fcebfbea85ffc77c796f87d47048d24e39d0c81e5b881cffcb2aba29e.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4420
    • C:\Users\Admin\AppData\Roaming\server.exe
      "C:\Users\Admin\AppData\Roaming\server.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2652
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\server.exe" "server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:480

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\server.exe

    Filesize

    37KB

    MD5

    2817c011989e9651e3b2bc75e2bb0190

    SHA1

    254230a43c2f92381595a6bb03fe75234efe191e

    SHA256

    c6d0e07fcebfbea85ffc77c796f87d47048d24e39d0c81e5b881cffcb2aba29e

    SHA512

    bbc58966bd9c076e1c992b44fa6024a79b3378594a6c548dcf8c17f5fb4c2304ffa0c07addc7e42711fc829f254fd192954807280ea42c4b4ce6880a0f05d309

  • C:\Users\Admin\AppData\Roaming\server.exe

    Filesize

    37KB

    MD5

    2817c011989e9651e3b2bc75e2bb0190

    SHA1

    254230a43c2f92381595a6bb03fe75234efe191e

    SHA256

    c6d0e07fcebfbea85ffc77c796f87d47048d24e39d0c81e5b881cffcb2aba29e

    SHA512

    bbc58966bd9c076e1c992b44fa6024a79b3378594a6c548dcf8c17f5fb4c2304ffa0c07addc7e42711fc829f254fd192954807280ea42c4b4ce6880a0f05d309

  • memory/2652-137-0x00000000747D0000-0x0000000074D81000-memory.dmp

    Filesize

    5.7MB

  • memory/2652-139-0x00000000747D0000-0x0000000074D81000-memory.dmp

    Filesize

    5.7MB

  • memory/4420-132-0x00000000747D0000-0x0000000074D81000-memory.dmp

    Filesize

    5.7MB

  • memory/4420-136-0x00000000747D0000-0x0000000074D81000-memory.dmp

    Filesize

    5.7MB