Overview

overview

10

Static

static

10

61f3f6b2e8...f2.exe

windows7-x64

10

61f3f6b2e8...f2.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-03-2023 01:38

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General

  • Target

    61f3f6b2e8186bc072917f390fa663019bad82797749a3eff085eaef1aee75f2.exe

  • Size

    297KB

  • MD5

    b7dc88755d70e1ecae9672d6278a52bb

  • SHA1

    5817f32e876d0f70961246eb8564d00f99595354

  • SHA256

    61f3f6b2e8186bc072917f390fa663019bad82797749a3eff085eaef1aee75f2

  • SHA512

    83ddb598e5da201eeb6e228a33da5ce9cf4f48731a8ad0703991f015e78cbb27d7156d46fa30f86e7773d5d5699b7cf4e982d404e05dece805002f055b4803ed

  • SSDEEP

    6144:8Yofp+2vNzef9qHdykAYlqG2l3Bm7G+9HRoIVC:foLQ/GmxYRRVC

Score
10/10
njrathackedevasionpersistencetrojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

45.141.27.207:2004

Mutex

3d9ff66b04f28402875708747612b463

Attributes
  • reg_key

    3d9ff66b04f28402875708747612b463

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

    trojannjrat
  • 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
  • Executes dropped EXE 1 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 35 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\61f3f6b2e8186bc072917f390fa663019bad82797749a3eff085eaef1aee75f2.exe
    "C:\Users\Admin\AppData\Local\Temp\61f3f6b2e8186bc072917f390fa663019bad82797749a3eff085eaef1aee75f2.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3744
    • C:\Users\Admin\AppData\Roaming\server.exe
      "C:\Users\Admin\AppData\Roaming\server.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4268
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\server.exe" "server.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:1860

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\Roaming\server.exe
    Filesize

    297KB

    MD5

    b7dc88755d70e1ecae9672d6278a52bb

    SHA1

    5817f32e876d0f70961246eb8564d00f99595354

    SHA256

    61f3f6b2e8186bc072917f390fa663019bad82797749a3eff085eaef1aee75f2

    SHA512

    83ddb598e5da201eeb6e228a33da5ce9cf4f48731a8ad0703991f015e78cbb27d7156d46fa30f86e7773d5d5699b7cf4e982d404e05dece805002f055b4803ed

    Download Submit
  • C:\Users\Admin\AppData\Roaming\server.exe
    Filesize

    297KB

    MD5

    b7dc88755d70e1ecae9672d6278a52bb

    SHA1

    5817f32e876d0f70961246eb8564d00f99595354

    SHA256

    61f3f6b2e8186bc072917f390fa663019bad82797749a3eff085eaef1aee75f2

    SHA512

    83ddb598e5da201eeb6e228a33da5ce9cf4f48731a8ad0703991f015e78cbb27d7156d46fa30f86e7773d5d5699b7cf4e982d404e05dece805002f055b4803ed

    Download Submit
  • C:\Users\Admin\AppData\Roaming\server.exe
    Filesize

    297KB

    MD5

    b7dc88755d70e1ecae9672d6278a52bb

    SHA1

    5817f32e876d0f70961246eb8564d00f99595354

    SHA256

    61f3f6b2e8186bc072917f390fa663019bad82797749a3eff085eaef1aee75f2

    SHA512

    83ddb598e5da201eeb6e228a33da5ce9cf4f48731a8ad0703991f015e78cbb27d7156d46fa30f86e7773d5d5699b7cf4e982d404e05dece805002f055b4803ed

    Download Submit
  • memory/3744-133-0x0000000000DE0000-0x0000000000DF0000-memory.dmp
    Filesize

    64KB

    Download
  • memory/4268-143-0x0000000000950000-0x0000000000960000-memory.dmp
    Filesize

    64KB

    Download
  • memory/4268-145-0x0000000000950000-0x0000000000960000-memory.dmp
    Filesize

    64KB

    Download