Overview

overview

10

Static

static

10

4b54e7e3f7...49.exe

windows7_x64

10

4b54e7e3f7...49.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    153s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 23:27

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General

  • Target

    4b54e7e3f754a52d0ed013cd376c069bfdb9e457d134d862b4303691cab03849.exe

  • Size

    37KB

  • MD5

    b98d25a30a0472eea9a8ead6009a853c

  • SHA1

    e91b5cfbe442299bf72924422e856424087e9a7e

  • SHA256

    4b54e7e3f754a52d0ed013cd376c069bfdb9e457d134d862b4303691cab03849

  • SHA512

    4c6ddeddc304ebff72846d115c63f9fe8889f11b44ec5623da22628b5ba258b5b716a02c6722ca483dd466f09db5eea2201af2af8837bc886b9b89c4d4c90314

Score
10/10
njratshareman.exeevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

shareman.exe

C2

ayezhiznboram.ddns.net:6344

Mutex

4bdbd1da64cfae6714664f169be7c0ed

Attributes
  • reg_key

    4bdbd1da64cfae6714664f169be7c0ed

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • 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
  • Drops autorun.inf file 1 TTPs

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

  • 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 27 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4b54e7e3f754a52d0ed013cd376c069bfdb9e457d134d862b4303691cab03849.exe
    "C:\Users\Admin\AppData\Local\Temp\4b54e7e3f754a52d0ed013cd376c069bfdb9e457d134d862b4303691cab03849.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2136
    • C:\Users\Admin\AppData\Local\Temp\Hedumay.exe
      "C:\Users\Admin\AppData\Local\Temp\Hedumay.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1404
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Hedumay.exe" "Hedumay.exe" ENABLE
        3⤵
          PID:3160

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Replication Through Removable Media

    1
    T1091

    Execution

    Persistence

    Modify Existing Service

    1
    T1031

    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

    Replication Through Removable Media

    1
    T1091

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      37KB

      MD5

      b98d25a30a0472eea9a8ead6009a853c

      SHA1

      e91b5cfbe442299bf72924422e856424087e9a7e

      SHA256

      4b54e7e3f754a52d0ed013cd376c069bfdb9e457d134d862b4303691cab03849

      SHA512

      4c6ddeddc304ebff72846d115c63f9fe8889f11b44ec5623da22628b5ba258b5b716a02c6722ca483dd466f09db5eea2201af2af8837bc886b9b89c4d4c90314

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

      37KB

      MD5

      b98d25a30a0472eea9a8ead6009a853c

      SHA1

      e91b5cfbe442299bf72924422e856424087e9a7e

      SHA256

      4b54e7e3f754a52d0ed013cd376c069bfdb9e457d134d862b4303691cab03849

      SHA512

      4c6ddeddc304ebff72846d115c63f9fe8889f11b44ec5623da22628b5ba258b5b716a02c6722ca483dd466f09db5eea2201af2af8837bc886b9b89c4d4c90314

      Download Submit
    • memory/1404-131-0x0000000000000000-mapping.dmp
      Download
    • memory/1404-134-0x0000000075150000-0x0000000075701000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/2136-130-0x0000000075150000-0x0000000075701000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/3160-135-0x0000000000000000-mapping.dmp
      Download