Overview

overview

10

Static

static

10

5a8c05db73...83.exe

windows7_x64

10

5a8c05db73...83.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-05-2022 14:26

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General

  • Target

    5a8c05db738e43447bc36122d5e83a8c2b1cfd34b6c8036bfa946b95bf16cc83.exe

  • Size

    23KB

  • MD5

    dafc19b65a1d5c42989e2258f51cbe44

  • SHA1

    d87e886de1bd237ece73a000ed8e2891b0e7d241

  • SHA256

    5a8c05db738e43447bc36122d5e83a8c2b1cfd34b6c8036bfa946b95bf16cc83

  • SHA512

    605e24bba49573d01a85e53d406f97540bf10312bf221c896d10e78eb1b237f19c7e46ed04ab8540a6f27aedbe5e48d3724c72503cb3ec8fe85c7834e62aa4ca

Score
10/10
njrathackedevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

127.0.0.1:8808

Mutex

f974c04cda44f6d8679500cc9da12bdb

Attributes
  • reg_key

    f974c04cda44f6d8679500cc9da12bdb

  • 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.

  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 33 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5a8c05db738e43447bc36122d5e83a8c2b1cfd34b6c8036bfa946b95bf16cc83.exe
    "C:\Users\Admin\AppData\Local\Temp\5a8c05db738e43447bc36122d5e83a8c2b1cfd34b6c8036bfa946b95bf16cc83.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:4912
    • C:\Windows\server.exe
      "C:\Windows\server.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2592
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Windows\server.exe" "server.exe" ENABLE
        3⤵
          PID:64

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    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

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Windows\server.exe
      Filesize

      23KB

      MD5

      dafc19b65a1d5c42989e2258f51cbe44

      SHA1

      d87e886de1bd237ece73a000ed8e2891b0e7d241

      SHA256

      5a8c05db738e43447bc36122d5e83a8c2b1cfd34b6c8036bfa946b95bf16cc83

      SHA512

      605e24bba49573d01a85e53d406f97540bf10312bf221c896d10e78eb1b237f19c7e46ed04ab8540a6f27aedbe5e48d3724c72503cb3ec8fe85c7834e62aa4ca

      Download Submit
    • C:\Windows\server.exe
      Filesize

      23KB

      MD5

      dafc19b65a1d5c42989e2258f51cbe44

      SHA1

      d87e886de1bd237ece73a000ed8e2891b0e7d241

      SHA256

      5a8c05db738e43447bc36122d5e83a8c2b1cfd34b6c8036bfa946b95bf16cc83

      SHA512

      605e24bba49573d01a85e53d406f97540bf10312bf221c896d10e78eb1b237f19c7e46ed04ab8540a6f27aedbe5e48d3724c72503cb3ec8fe85c7834e62aa4ca

      Download Submit
    • memory/64-136-0x0000000000000000-mapping.dmp
      Download
    • memory/2592-132-0x0000000000000000-mapping.dmp
      Download
    • memory/2592-135-0x00000000746F0000-0x0000000074CA1000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/4912-131-0x00000000746F0000-0x0000000074CA1000-memory.dmp
      Filesize

      5.7MB

      Download