Overview

overview

10

Static

static

10

8d922558ad...9d.exe

windows7_x64

10

8d922558ad...9d.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    171s
  • max time network
    174s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    01-07-2022 06:00

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General

  • Target

    8d922558add2ca72d28ccf04735189741860cc38f9f6862a1a430314a814749d.exe

  • Size

    93KB

  • MD5

    e005b555ea05cef46b13fe5de4892ab9

  • SHA1

    547a4b55fd055d5eaa69090da90f8d9bf58cd51c

  • SHA256

    8d922558add2ca72d28ccf04735189741860cc38f9f6862a1a430314a814749d

  • SHA512

    2731c12ffad3eb09151301d4d1fd3987b48df64ba7b9c55a80fcb8ce75eb0e9960eb1e7b1e010507d45a0f0bfd729fe08c43fbcd0de2345576110a01c291a4b8

Score
10/10
njratjpegevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

jpeg

C2

178.44.199.23:7777

Mutex

f7637d68ce1b9405a0673e2492622992

Attributes
  • reg_key

    f7637d68ce1b9405a0673e2492622992

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
    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
  • 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 33 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8d922558add2ca72d28ccf04735189741860cc38f9f6862a1a430314a814749d.exe
    "C:\Users\Admin\AppData\Local\Temp\8d922558add2ca72d28ccf04735189741860cc38f9f6862a1a430314a814749d.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2916
    • C:\Users\Admin\AppData\Local\Temp\jpeg.exe
      "C:\Users\Admin\AppData\Local\Temp\jpeg.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:4200
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\jpeg.exe" "jpeg.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:4232

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:\Users\Admin\AppData\Local\Temp\jpeg.exe
    Filesize

    93KB

    MD5

    e005b555ea05cef46b13fe5de4892ab9

    SHA1

    547a4b55fd055d5eaa69090da90f8d9bf58cd51c

    SHA256

    8d922558add2ca72d28ccf04735189741860cc38f9f6862a1a430314a814749d

    SHA512

    2731c12ffad3eb09151301d4d1fd3987b48df64ba7b9c55a80fcb8ce75eb0e9960eb1e7b1e010507d45a0f0bfd729fe08c43fbcd0de2345576110a01c291a4b8

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

    93KB

    MD5

    e005b555ea05cef46b13fe5de4892ab9

    SHA1

    547a4b55fd055d5eaa69090da90f8d9bf58cd51c

    SHA256

    8d922558add2ca72d28ccf04735189741860cc38f9f6862a1a430314a814749d

    SHA512

    2731c12ffad3eb09151301d4d1fd3987b48df64ba7b9c55a80fcb8ce75eb0e9960eb1e7b1e010507d45a0f0bfd729fe08c43fbcd0de2345576110a01c291a4b8

    Download Submit
  • memory/2916-130-0x00000000745D0000-0x0000000074B81000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/2916-134-0x00000000745D0000-0x0000000074B81000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4200-131-0x0000000000000000-mapping.dmp
    Download
  • memory/4200-135-0x00000000745D0000-0x0000000074B81000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4200-137-0x00000000745D0000-0x0000000074B81000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/4232-136-0x0000000000000000-mapping.dmp
    Download