Overview

overview

10

Static

static

10

bfb9595d41...d6.exe

windows7-x64

10

bfb9595d41...d6.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-01-2023 09:41

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General

  • Target

    bfb9595d41e726e7f998b787fde15fd6.exe

  • Size

    43KB

  • MD5

    bfb9595d41e726e7f998b787fde15fd6

  • SHA1

    eebad9fbff85ee5196519f23e618d3338337ac59

  • SHA256

    12fd0e3e4e6aad3b58924c8c7cdf9a8d5e2fba3624f679f32f9a0231d8a23a62

  • SHA512

    034ce29a31196fa1dc2e43c9770e7c5d300eb1a69138b90e3a2ba316cae3ba90d7a22ae225cef9fa96b3d3636e3de4a8a19c7f3347ae824b7af2e35e3ed77a34

  • SSDEEP

    384:MZySi5ctOnwtOyW6Z/gc2iEwPmAMcCb2IDa9D9O5UE5QzwBlpJNakkjh/TzF7pWJ:qqqAwt/W6dgc2iEweQCbpvQO+UD+L

Score
10/10
njratsystempersistencetrojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

system

C2

6.tcp.eu.ngrok.io:19161

Mutex

Windows Update

Attributes
  • reg_key

    Windows Update

  • splitter

    |Hassan|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Executes dropped EXE 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
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bfb9595d41e726e7f998b787fde15fd6.exe
    "C:\Users\Admin\AppData\Local\Temp\bfb9595d41e726e7f998b787fde15fd6.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:4956
    • C:\Users\Admin\AppData\Local\Temp\systemupdate.exe
      "C:\Users\Admin\AppData\Local\Temp\systemupdate.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:4548

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

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

    43KB

    MD5

    bfb9595d41e726e7f998b787fde15fd6

    SHA1

    eebad9fbff85ee5196519f23e618d3338337ac59

    SHA256

    12fd0e3e4e6aad3b58924c8c7cdf9a8d5e2fba3624f679f32f9a0231d8a23a62

    SHA512

    034ce29a31196fa1dc2e43c9770e7c5d300eb1a69138b90e3a2ba316cae3ba90d7a22ae225cef9fa96b3d3636e3de4a8a19c7f3347ae824b7af2e35e3ed77a34

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\systemupdate.exe
    Filesize

    43KB

    MD5

    bfb9595d41e726e7f998b787fde15fd6

    SHA1

    eebad9fbff85ee5196519f23e618d3338337ac59

    SHA256

    12fd0e3e4e6aad3b58924c8c7cdf9a8d5e2fba3624f679f32f9a0231d8a23a62

    SHA512

    034ce29a31196fa1dc2e43c9770e7c5d300eb1a69138b90e3a2ba316cae3ba90d7a22ae225cef9fa96b3d3636e3de4a8a19c7f3347ae824b7af2e35e3ed77a34

    Download Submit
  • memory/4548-133-0x0000000000000000-mapping.dmp
    Download
  • memory/4548-137-0x0000000074CB0000-0x0000000075261000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4548-138-0x0000000074CB0000-0x0000000075261000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4956-132-0x0000000074CB0000-0x0000000075261000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4956-136-0x0000000074CB0000-0x0000000075261000-memory.dmp
    Filesize

    5.7MB

    Download