Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-03-2023 07:51

General

  • Target

    0e47b5de5fd3f5b101d85f0010df6158.exe

  • Size

    23KB

  • MD5

    0e47b5de5fd3f5b101d85f0010df6158

  • SHA1

    ec4d791a218f09e2d9f5427524f69ee61d801d5c

  • SHA256

    d79a36eca6234e2aafe266a6887135f93fc076f9aca00571a5012884b510c873

  • SHA512

    3aff75ddeeb9f50c8752d36f3c6ea77649e41e9adb9242f9b8ef1df3e0186915ce19fdd471a244ced413a923073fa0633d7b86e11d33d2e92b081efd50cca52c

  • SSDEEP

    384:OV8aSyS9gB3Y1KIay2X8cLZI6XgxsGJVPpmRvR6JZlbw8hqIusZzZXm:OG589tXvRpcnu1

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

mohamednjrat111.myftp.biz:543

Mutex

7f4a0bf03501ed8ca94b06b3357046ad

Attributes
  • reg_key

    7f4a0bf03501ed8ca94b06b3357046ad

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 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\0e47b5de5fd3f5b101d85f0010df6158.exe
    "C:\Users\Admin\AppData\Local\Temp\0e47b5de5fd3f5b101d85f0010df6158.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2956
    • C:\Users\Admin\AppData\Local\Temp\dllhost.exe
      "C:\Users\Admin\AppData\Local\Temp\dllhost.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4448
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\dllhost.exe" "dllhost.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:340

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

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

    23KB

    MD5

    0e47b5de5fd3f5b101d85f0010df6158

    SHA1

    ec4d791a218f09e2d9f5427524f69ee61d801d5c

    SHA256

    d79a36eca6234e2aafe266a6887135f93fc076f9aca00571a5012884b510c873

    SHA512

    3aff75ddeeb9f50c8752d36f3c6ea77649e41e9adb9242f9b8ef1df3e0186915ce19fdd471a244ced413a923073fa0633d7b86e11d33d2e92b081efd50cca52c

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

    23KB

    MD5

    0e47b5de5fd3f5b101d85f0010df6158

    SHA1

    ec4d791a218f09e2d9f5427524f69ee61d801d5c

    SHA256

    d79a36eca6234e2aafe266a6887135f93fc076f9aca00571a5012884b510c873

    SHA512

    3aff75ddeeb9f50c8752d36f3c6ea77649e41e9adb9242f9b8ef1df3e0186915ce19fdd471a244ced413a923073fa0633d7b86e11d33d2e92b081efd50cca52c

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

    23KB

    MD5

    0e47b5de5fd3f5b101d85f0010df6158

    SHA1

    ec4d791a218f09e2d9f5427524f69ee61d801d5c

    SHA256

    d79a36eca6234e2aafe266a6887135f93fc076f9aca00571a5012884b510c873

    SHA512

    3aff75ddeeb9f50c8752d36f3c6ea77649e41e9adb9242f9b8ef1df3e0186915ce19fdd471a244ced413a923073fa0633d7b86e11d33d2e92b081efd50cca52c

  • memory/2956-133-0x0000000001990000-0x00000000019A0000-memory.dmp
    Filesize

    64KB

  • memory/4448-143-0x0000000000D30000-0x0000000000D40000-memory.dmp
    Filesize

    64KB

  • memory/4448-144-0x0000000000D30000-0x0000000000D40000-memory.dmp
    Filesize

    64KB

  • memory/4448-145-0x0000000000D30000-0x0000000000D40000-memory.dmp
    Filesize

    64KB

  • memory/4448-146-0x0000000000D30000-0x0000000000D40000-memory.dmp
    Filesize

    64KB