Analysis

  • max time kernel
    150s
  • max time network
    57s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 23:38

General

  • Target

    e0f2ca64adfd552026bccf9999757ad7a18e2b483598bfa87936dc573bbdcb78.exe

  • Size

    309KB

  • MD5

    b4b37e58be879d3d2db7ed38e493cb90

  • SHA1

    64d18c155ffcfe5f5a92e2e9167660454abb8dba

  • SHA256

    e0f2ca64adfd552026bccf9999757ad7a18e2b483598bfa87936dc573bbdcb78

  • SHA512

    62e8678a51e39df456f3a8119c727a8378de880c5ff88ef4ef91702dbbe821a1c6c1f985f5e77c9819f49367c1792fc6eb05c3dfd0b4dcebd1f916b20f27d500

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

فاكك يو

C2

windows-background.ddns.net:1010

Mutex

b91787a4994aec6df4185bd0dc4cd953

Attributes
  • reg_key

    b91787a4994aec6df4185bd0dc4cd953

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Drops startup file 2 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 use of AdjustPrivilegeToken 17 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e0f2ca64adfd552026bccf9999757ad7a18e2b483598bfa87936dc573bbdcb78.exe
    "C:\Users\Admin\AppData\Local\Temp\e0f2ca64adfd552026bccf9999757ad7a18e2b483598bfa87936dc573bbdcb78.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:904
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1728
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\svchost.exe" "svchost.exe" ENABLE
        3⤵
          PID:1780

    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\Roaming\svchost.exe
      Filesize

      309KB

      MD5

      b4b37e58be879d3d2db7ed38e493cb90

      SHA1

      64d18c155ffcfe5f5a92e2e9167660454abb8dba

      SHA256

      e0f2ca64adfd552026bccf9999757ad7a18e2b483598bfa87936dc573bbdcb78

      SHA512

      62e8678a51e39df456f3a8119c727a8378de880c5ff88ef4ef91702dbbe821a1c6c1f985f5e77c9819f49367c1792fc6eb05c3dfd0b4dcebd1f916b20f27d500

    • C:\Users\Admin\AppData\Roaming\svchost.exe
      Filesize

      309KB

      MD5

      b4b37e58be879d3d2db7ed38e493cb90

      SHA1

      64d18c155ffcfe5f5a92e2e9167660454abb8dba

      SHA256

      e0f2ca64adfd552026bccf9999757ad7a18e2b483598bfa87936dc573bbdcb78

      SHA512

      62e8678a51e39df456f3a8119c727a8378de880c5ff88ef4ef91702dbbe821a1c6c1f985f5e77c9819f49367c1792fc6eb05c3dfd0b4dcebd1f916b20f27d500

    • \Users\Admin\AppData\Roaming\svchost.exe
      Filesize

      309KB

      MD5

      b4b37e58be879d3d2db7ed38e493cb90

      SHA1

      64d18c155ffcfe5f5a92e2e9167660454abb8dba

      SHA256

      e0f2ca64adfd552026bccf9999757ad7a18e2b483598bfa87936dc573bbdcb78

      SHA512

      62e8678a51e39df456f3a8119c727a8378de880c5ff88ef4ef91702dbbe821a1c6c1f985f5e77c9819f49367c1792fc6eb05c3dfd0b4dcebd1f916b20f27d500

    • memory/904-54-0x0000000000E70000-0x0000000000EC4000-memory.dmp
      Filesize

      336KB

    • memory/904-55-0x00000000003C0000-0x00000000003CC000-memory.dmp
      Filesize

      48KB

    • memory/904-56-0x00000000764C1000-0x00000000764C3000-memory.dmp
      Filesize

      8KB

    • memory/1728-58-0x0000000000000000-mapping.dmp
    • memory/1728-61-0x0000000000B30000-0x0000000000B84000-memory.dmp
      Filesize

      336KB

    • memory/1780-62-0x0000000000000000-mapping.dmp