Analysis

  • max time kernel
    151s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    26-11-2022 22:42

General

  • Target

    2df351f2e7e6f1340f81c6431e88fb2b78f2eaefce58763e7bfd5214985aeaaa.exe

  • Size

    356KB

  • MD5

    779f561dc93adbf2b40e92ac374f7cf5

  • SHA1

    562ca1be06ff75f55893fa5472abbf7bb9fa6625

  • SHA256

    2df351f2e7e6f1340f81c6431e88fb2b78f2eaefce58763e7bfd5214985aeaaa

  • SHA512

    d1a3f889c6f60b49d07519ddc73f9108012c8e4b81a01328ac75400bd10888428fed84c81a32da3ff00644e3149ba8ad4fd9720d2bb4c0819619e9f9f2069501

  • SSDEEP

    6144:9LM3L6hWtnvqI6vzkGTxapOEBqa5tXc8s:hMbaWtn6vzkYmVjC8s

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

FBautoliker103

C2

182.191.88.102:5555

Mutex

246bc91174535f2c90a8931dec64f396

Attributes
  • reg_key

    246bc91174535f2c90a8931dec64f396

  • splitter

    |'|'|

Signatures

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Executes dropped EXE 2 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 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 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2df351f2e7e6f1340f81c6431e88fb2b78f2eaefce58763e7bfd5214985aeaaa.exe
    "C:\Users\Admin\AppData\Local\Temp\2df351f2e7e6f1340f81c6431e88fb2b78f2eaefce58763e7bfd5214985aeaaa.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Users\Admin\AppData\Local\Temp\2df351f2e7e6f1340f81c6431e88fb2b78f2eaefce58763e7bfd5214985aeaaa.exe
      C:\Users\Admin\AppData\Local\Temp\2df351f2e7e6f1340f81c6431e88fb2b78f2eaefce58763e7bfd5214985aeaaa.exe
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:112
      • C:\Users\Admin\AppData\Local\Temp\server.exe
        "C:\Users\Admin\AppData\Local\Temp\server.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1524
        • C:\Users\Admin\AppData\Local\Temp\server.exe
          C:\Users\Admin\AppData\Local\Temp\server.exe
          4⤵
          • Executes dropped EXE
          • Drops startup file
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:632
          • C:\Windows\SysWOW64\netsh.exe
            netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
            5⤵
            • Modifies Windows Firewall
            PID:836

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\server.exe
    Filesize

    356KB

    MD5

    779f561dc93adbf2b40e92ac374f7cf5

    SHA1

    562ca1be06ff75f55893fa5472abbf7bb9fa6625

    SHA256

    2df351f2e7e6f1340f81c6431e88fb2b78f2eaefce58763e7bfd5214985aeaaa

    SHA512

    d1a3f889c6f60b49d07519ddc73f9108012c8e4b81a01328ac75400bd10888428fed84c81a32da3ff00644e3149ba8ad4fd9720d2bb4c0819619e9f9f2069501

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

    356KB

    MD5

    779f561dc93adbf2b40e92ac374f7cf5

    SHA1

    562ca1be06ff75f55893fa5472abbf7bb9fa6625

    SHA256

    2df351f2e7e6f1340f81c6431e88fb2b78f2eaefce58763e7bfd5214985aeaaa

    SHA512

    d1a3f889c6f60b49d07519ddc73f9108012c8e4b81a01328ac75400bd10888428fed84c81a32da3ff00644e3149ba8ad4fd9720d2bb4c0819619e9f9f2069501

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

    356KB

    MD5

    779f561dc93adbf2b40e92ac374f7cf5

    SHA1

    562ca1be06ff75f55893fa5472abbf7bb9fa6625

    SHA256

    2df351f2e7e6f1340f81c6431e88fb2b78f2eaefce58763e7bfd5214985aeaaa

    SHA512

    d1a3f889c6f60b49d07519ddc73f9108012c8e4b81a01328ac75400bd10888428fed84c81a32da3ff00644e3149ba8ad4fd9720d2bb4c0819619e9f9f2069501

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

    356KB

    MD5

    779f561dc93adbf2b40e92ac374f7cf5

    SHA1

    562ca1be06ff75f55893fa5472abbf7bb9fa6625

    SHA256

    2df351f2e7e6f1340f81c6431e88fb2b78f2eaefce58763e7bfd5214985aeaaa

    SHA512

    d1a3f889c6f60b49d07519ddc73f9108012c8e4b81a01328ac75400bd10888428fed84c81a32da3ff00644e3149ba8ad4fd9720d2bb4c0819619e9f9f2069501

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

    356KB

    MD5

    779f561dc93adbf2b40e92ac374f7cf5

    SHA1

    562ca1be06ff75f55893fa5472abbf7bb9fa6625

    SHA256

    2df351f2e7e6f1340f81c6431e88fb2b78f2eaefce58763e7bfd5214985aeaaa

    SHA512

    d1a3f889c6f60b49d07519ddc73f9108012c8e4b81a01328ac75400bd10888428fed84c81a32da3ff00644e3149ba8ad4fd9720d2bb4c0819619e9f9f2069501

  • memory/112-61-0x0000000000400000-0x000000000040C000-memory.dmp
    Filesize

    48KB

  • memory/112-69-0x0000000074D80000-0x000000007532B000-memory.dmp
    Filesize

    5.7MB

  • memory/112-62-0x0000000000400000-0x000000000040C000-memory.dmp
    Filesize

    48KB

  • memory/112-63-0x000000000040748E-mapping.dmp
  • memory/112-66-0x0000000000402000-0x0000000000407600-memory.dmp
    Filesize

    21KB

  • memory/112-65-0x0000000000402000-0x0000000000407600-memory.dmp
    Filesize

    21KB

  • memory/112-75-0x0000000074D80000-0x000000007532B000-memory.dmp
    Filesize

    5.7MB

  • memory/112-57-0x0000000000400000-0x000000000040C000-memory.dmp
    Filesize

    48KB

  • memory/112-60-0x0000000000400000-0x000000000040C000-memory.dmp
    Filesize

    48KB

  • memory/112-58-0x0000000000400000-0x000000000040C000-memory.dmp
    Filesize

    48KB

  • memory/632-83-0x000000000040748E-mapping.dmp
  • memory/632-93-0x0000000074D80000-0x000000007532B000-memory.dmp
    Filesize

    5.7MB

  • memory/632-90-0x0000000074D80000-0x000000007532B000-memory.dmp
    Filesize

    5.7MB

  • memory/836-91-0x0000000000000000-mapping.dmp
  • memory/1524-71-0x0000000000000000-mapping.dmp
  • memory/1524-89-0x0000000074D80000-0x000000007532B000-memory.dmp
    Filesize

    5.7MB

  • memory/2044-55-0x0000000074D80000-0x000000007532B000-memory.dmp
    Filesize

    5.7MB

  • memory/2044-56-0x0000000074D80000-0x000000007532B000-memory.dmp
    Filesize

    5.7MB

  • memory/2044-54-0x0000000075F81000-0x0000000075F83000-memory.dmp
    Filesize

    8KB

  • memory/2044-68-0x0000000074D80000-0x000000007532B000-memory.dmp
    Filesize

    5.7MB