Analysis

  • max time kernel
    151s
  • max time network
    43s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    26-06-2022 22:20

General

  • Target

    36052b2e4d58145d7ea60045bdd5afc10dc168eb9451ef2029511cd929b68944.exe

  • Size

    29KB

  • MD5

    13f58dfd117d898323b225c0a5ccc5f4

  • SHA1

    ef333f79c99d1ea871bfa2d25492f205643f589b

  • SHA256

    36052b2e4d58145d7ea60045bdd5afc10dc168eb9451ef2029511cd929b68944

  • SHA512

    49637dd7084ae38654d876b000590aca768a4098a159b9b0196580c91494fb534c4e07478740611814288e7a7bd5bdff62691ebc43efd76d8928fc7225cbe763

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

HacKed

C2

127.0.0.1:1177

Mutex

5cd8f17f4086744065eb0992a09e05a2

Attributes
  • reg_key

    5cd8f17f4086744065eb0992a09e05a2

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Loads dropped DLL 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 behavior: EnumeratesProcesses 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\36052b2e4d58145d7ea60045bdd5afc10dc168eb9451ef2029511cd929b68944.exe
    "C:\Users\Admin\AppData\Local\Temp\36052b2e4d58145d7ea60045bdd5afc10dc168eb9451ef2029511cd929b68944.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:304
    • C:\Users\Admin\AppData\Local\Temp\Trojan.exe
      "C:\Users\Admin\AppData\Local\Temp\Trojan.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1348
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Trojan.exe" "Trojan.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:900

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

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

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

    29KB

    MD5

    13f58dfd117d898323b225c0a5ccc5f4

    SHA1

    ef333f79c99d1ea871bfa2d25492f205643f589b

    SHA256

    36052b2e4d58145d7ea60045bdd5afc10dc168eb9451ef2029511cd929b68944

    SHA512

    49637dd7084ae38654d876b000590aca768a4098a159b9b0196580c91494fb534c4e07478740611814288e7a7bd5bdff62691ebc43efd76d8928fc7225cbe763

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

    29KB

    MD5

    13f58dfd117d898323b225c0a5ccc5f4

    SHA1

    ef333f79c99d1ea871bfa2d25492f205643f589b

    SHA256

    36052b2e4d58145d7ea60045bdd5afc10dc168eb9451ef2029511cd929b68944

    SHA512

    49637dd7084ae38654d876b000590aca768a4098a159b9b0196580c91494fb534c4e07478740611814288e7a7bd5bdff62691ebc43efd76d8928fc7225cbe763

  • \Users\Admin\AppData\Local\Temp\Trojan.exe
    Filesize

    29KB

    MD5

    13f58dfd117d898323b225c0a5ccc5f4

    SHA1

    ef333f79c99d1ea871bfa2d25492f205643f589b

    SHA256

    36052b2e4d58145d7ea60045bdd5afc10dc168eb9451ef2029511cd929b68944

    SHA512

    49637dd7084ae38654d876b000590aca768a4098a159b9b0196580c91494fb534c4e07478740611814288e7a7bd5bdff62691ebc43efd76d8928fc7225cbe763

  • memory/304-54-0x0000000075311000-0x0000000075313000-memory.dmp
    Filesize

    8KB

  • memory/304-55-0x0000000074390000-0x000000007493B000-memory.dmp
    Filesize

    5.7MB

  • memory/304-61-0x0000000074390000-0x000000007493B000-memory.dmp
    Filesize

    5.7MB

  • memory/900-62-0x0000000000000000-mapping.dmp
  • memory/1348-57-0x0000000000000000-mapping.dmp
  • memory/1348-63-0x0000000074390000-0x000000007493B000-memory.dmp
    Filesize

    5.7MB

  • memory/1348-65-0x0000000074390000-0x000000007493B000-memory.dmp
    Filesize

    5.7MB