Analysis

  • max time kernel
    162s
  • max time network
    188s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-11-2022 22:25

General

  • Target

    8dd2265487197ab2b2f16c99125a601a3f017a95b0e19f752051fe189a29f17c.exe

  • Size

    23KB

  • MD5

    32f2552072f676c1e6f015d2f7304f23

  • SHA1

    0bc9defa91e27b066dd7c5f12b2e5b8ebedc8946

  • SHA256

    8dd2265487197ab2b2f16c99125a601a3f017a95b0e19f752051fe189a29f17c

  • SHA512

    3b7d1942daec9e5101ac7b045e2e999650d5a6ad863af62c7fcdfd408164351758e5abc8b334a536c6f5254dda44097c5c67914e44dc0685275bf636631139ea

  • SSDEEP

    384:a0jeCIYTNQZUuQnJXJeCXlwhPQ6VgDOwBHhdmRvR6JZlbw8hqIusZzZpFGrFM:F3jNAU/ZVX6Rpcnuk2e

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed by parosh

C2

parosh22.ddns.net:1177

Mutex

e4995e55c0970b64807d63edc8a971a5

Attributes
  • reg_key

    e4995e55c0970b64807d63edc8a971a5

  • 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.

  • 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 9 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8dd2265487197ab2b2f16c99125a601a3f017a95b0e19f752051fe189a29f17c.exe
    "C:\Users\Admin\AppData\Local\Temp\8dd2265487197ab2b2f16c99125a601a3f017a95b0e19f752051fe189a29f17c.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2900
    • C:\Users\Admin\AppData\Roaming\chrome.exe
      "C:\Users\Admin\AppData\Roaming\chrome.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3208
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\chrome.exe" "chrome.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:4076

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

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\chrome.exe
    Filesize

    23KB

    MD5

    32f2552072f676c1e6f015d2f7304f23

    SHA1

    0bc9defa91e27b066dd7c5f12b2e5b8ebedc8946

    SHA256

    8dd2265487197ab2b2f16c99125a601a3f017a95b0e19f752051fe189a29f17c

    SHA512

    3b7d1942daec9e5101ac7b045e2e999650d5a6ad863af62c7fcdfd408164351758e5abc8b334a536c6f5254dda44097c5c67914e44dc0685275bf636631139ea

  • C:\Users\Admin\AppData\Roaming\chrome.exe
    Filesize

    23KB

    MD5

    32f2552072f676c1e6f015d2f7304f23

    SHA1

    0bc9defa91e27b066dd7c5f12b2e5b8ebedc8946

    SHA256

    8dd2265487197ab2b2f16c99125a601a3f017a95b0e19f752051fe189a29f17c

    SHA512

    3b7d1942daec9e5101ac7b045e2e999650d5a6ad863af62c7fcdfd408164351758e5abc8b334a536c6f5254dda44097c5c67914e44dc0685275bf636631139ea

  • memory/2900-132-0x0000000074710000-0x0000000074CC1000-memory.dmp
    Filesize

    5.7MB

  • memory/2900-133-0x0000000074710000-0x0000000074CC1000-memory.dmp
    Filesize

    5.7MB

  • memory/2900-137-0x0000000074710000-0x0000000074CC1000-memory.dmp
    Filesize

    5.7MB

  • memory/3208-134-0x0000000000000000-mapping.dmp
  • memory/3208-138-0x0000000074710000-0x0000000074CC1000-memory.dmp
    Filesize

    5.7MB

  • memory/3208-139-0x0000000074710000-0x0000000074CC1000-memory.dmp
    Filesize

    5.7MB

  • memory/4076-140-0x0000000000000000-mapping.dmp