Analysis

  • max time kernel
    202s
  • max time network
    101s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    26-11-2022 08:42

General

  • Target

    bd77ef3186d1cfc0b89a834f742eee6efe99d8a4bc2dbec694fcfaff7c30a10f.exe

  • Size

    23KB

  • MD5

    e0d58f00a4ef29afc8f4b9fab7730fa2

  • SHA1

    e047c93a6d5911344efa3dc932b77ef6c140e2ed

  • SHA256

    bd77ef3186d1cfc0b89a834f742eee6efe99d8a4bc2dbec694fcfaff7c30a10f

  • SHA512

    5d55835123613de27c464bd555d333fe235ad957f67885bcab7304151414c49654317daaa3c1c864f5741c2c84b78d7bc84922f516baf5ea296840260e27f30e

  • SSDEEP

    384:vY324bcgPiJLQrfARGSRUJsbY6ZgvSMBD3t8mRvR6JZlbw8hqIusZzZ2d:4L2s+tRyRpcnuF

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

1

C2

x-devil50099005.ddns.net:5552

Mutex

65d6e46c64951a1a3fd770cfd09c2de9

Attributes
  • reg_key

    65d6e46c64951a1a3fd770cfd09c2de9

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 17 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bd77ef3186d1cfc0b89a834f742eee6efe99d8a4bc2dbec694fcfaff7c30a10f.exe
    "C:\Users\Admin\AppData\Local\Temp\bd77ef3186d1cfc0b89a834f742eee6efe99d8a4bc2dbec694fcfaff7c30a10f.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1968
    • C:\Users\Admin\AppData\Local\Temp\google.exe
      "C:\Users\Admin\AppData\Local\Temp\google.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1396
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\google.exe" "google.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:968

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\google.exe
    Filesize

    23KB

    MD5

    e0d58f00a4ef29afc8f4b9fab7730fa2

    SHA1

    e047c93a6d5911344efa3dc932b77ef6c140e2ed

    SHA256

    bd77ef3186d1cfc0b89a834f742eee6efe99d8a4bc2dbec694fcfaff7c30a10f

    SHA512

    5d55835123613de27c464bd555d333fe235ad957f67885bcab7304151414c49654317daaa3c1c864f5741c2c84b78d7bc84922f516baf5ea296840260e27f30e

  • C:\Users\Admin\AppData\Local\Temp\google.exe
    Filesize

    23KB

    MD5

    e0d58f00a4ef29afc8f4b9fab7730fa2

    SHA1

    e047c93a6d5911344efa3dc932b77ef6c140e2ed

    SHA256

    bd77ef3186d1cfc0b89a834f742eee6efe99d8a4bc2dbec694fcfaff7c30a10f

    SHA512

    5d55835123613de27c464bd555d333fe235ad957f67885bcab7304151414c49654317daaa3c1c864f5741c2c84b78d7bc84922f516baf5ea296840260e27f30e

  • \Users\Admin\AppData\Local\Temp\google.exe
    Filesize

    23KB

    MD5

    e0d58f00a4ef29afc8f4b9fab7730fa2

    SHA1

    e047c93a6d5911344efa3dc932b77ef6c140e2ed

    SHA256

    bd77ef3186d1cfc0b89a834f742eee6efe99d8a4bc2dbec694fcfaff7c30a10f

    SHA512

    5d55835123613de27c464bd555d333fe235ad957f67885bcab7304151414c49654317daaa3c1c864f5741c2c84b78d7bc84922f516baf5ea296840260e27f30e

  • memory/968-64-0x0000000000000000-mapping.dmp
  • memory/1396-58-0x0000000000000000-mapping.dmp
  • memory/1396-63-0x0000000074590000-0x0000000074B3B000-memory.dmp
    Filesize

    5.7MB

  • memory/1396-66-0x0000000074590000-0x0000000074B3B000-memory.dmp
    Filesize

    5.7MB

  • memory/1968-54-0x00000000764D1000-0x00000000764D3000-memory.dmp
    Filesize

    8KB

  • memory/1968-55-0x0000000074590000-0x0000000074B3B000-memory.dmp
    Filesize

    5.7MB

  • memory/1968-56-0x0000000074590000-0x0000000074B3B000-memory.dmp
    Filesize

    5.7MB

  • memory/1968-62-0x0000000074590000-0x0000000074B3B000-memory.dmp
    Filesize

    5.7MB