Overview

overview

10

Static

static

10

5ed4fa4e97...0a.exe

windows7-x64

10

5ed4fa4e97...0a.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-11-2022 18:45

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General

  • Target

    5ed4fa4e971369c1f624a68caf0a4ad0619e2a0fe5ca5708a98d2cd9a5adde0a.exe

  • Size

    29KB

  • MD5

    55cf60a4842ef01b402ff44db6621bcb

  • SHA1

    eaebe99a8f9a78a2b147d5be068372d2ae564161

  • SHA256

    5ed4fa4e971369c1f624a68caf0a4ad0619e2a0fe5ca5708a98d2cd9a5adde0a

  • SHA512

    55afc5cd8b64eccd0eeaed96a1238955b1c82aef0ed992bf56ab77b7e614f8bbc23fffbb45f4cd0cfc6c29bee09ff2a4b94ff61e5faa7be8f4d11e0b33c359d3

  • SSDEEP

    384:LFpQjtl7jBnoKoK3JX15nHK4GumqDAEReIlGBsbh0w4wlAokw9OhgOL1vYRGOZz5:Li7hoKoGJFNK4Aq1RehBKh0p29SgRS6

Score
10/10
njratsystemevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

system

C2

127.0.0.1:1177

Mutex

12ce4e06a81e8d54fd01d9b762f1b1bb

Attributes
  • reg_key

    12ce4e06a81e8d54fd01d9b762f1b1bb

  • 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.

  • 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 48 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5ed4fa4e971369c1f624a68caf0a4ad0619e2a0fe5ca5708a98d2cd9a5adde0a.exe
    "C:\Users\Admin\AppData\Local\Temp\5ed4fa4e971369c1f624a68caf0a4ad0619e2a0fe5ca5708a98d2cd9a5adde0a.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1136
    • C:\Users\Admin\AppData\Local\Temp\system.exe
      "C:\Users\Admin\AppData\Local\Temp\system.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2056
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\system.exe" "system.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:5056

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\system.exe
    Filesize

    29KB

    MD5

    55cf60a4842ef01b402ff44db6621bcb

    SHA1

    eaebe99a8f9a78a2b147d5be068372d2ae564161

    SHA256

    5ed4fa4e971369c1f624a68caf0a4ad0619e2a0fe5ca5708a98d2cd9a5adde0a

    SHA512

    55afc5cd8b64eccd0eeaed96a1238955b1c82aef0ed992bf56ab77b7e614f8bbc23fffbb45f4cd0cfc6c29bee09ff2a4b94ff61e5faa7be8f4d11e0b33c359d3

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

    29KB

    MD5

    55cf60a4842ef01b402ff44db6621bcb

    SHA1

    eaebe99a8f9a78a2b147d5be068372d2ae564161

    SHA256

    5ed4fa4e971369c1f624a68caf0a4ad0619e2a0fe5ca5708a98d2cd9a5adde0a

    SHA512

    55afc5cd8b64eccd0eeaed96a1238955b1c82aef0ed992bf56ab77b7e614f8bbc23fffbb45f4cd0cfc6c29bee09ff2a4b94ff61e5faa7be8f4d11e0b33c359d3

    Download Submit
  • memory/1136-132-0x0000000074E10000-0x00000000753C1000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/1136-136-0x0000000074E10000-0x00000000753C1000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/2056-133-0x0000000000000000-mapping.dmp
    Download
  • memory/2056-138-0x0000000074E10000-0x00000000753C1000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/2056-139-0x0000000074E10000-0x00000000753C1000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/5056-137-0x0000000000000000-mapping.dmp
    Download