Analysis

  • max time kernel
    119s
  • max time network
    21s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    07/11/2024, 08:28

General

  • Target
    b48cb528dfa9d21c44ff9280f0f6b54a92f6a74d3e2b32c1b362db10df2dbd0bN.exe
  • Size 370KB
  • Sample241107-kdg5eayfle
  • SHA256 b48cb528dfa9d21c44ff9280f0f6b54a92f6a74d3e2b32c1b362db10df2dbd0b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • berbew

C2
  • http://f/wcmd.htm

  • http://f/ppslog.php

  • http://f/piplog.php?%s:%i:%i:%s:%09u:%i:%02d:%02d:%02d

Signatures

  • Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 12 IoCs
  • Berbew

    Berbew is a backdoor written in C++.

  • Berbew family
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 16 IoCs
  • Drops file in System32 directory 18 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 21 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b48cb528dfa9d21c44ff9280f0f6b54a92f6a74d3e2b32c1b362db10df2dbd0bN.exe
    "C:\Users\Admin\AppData\Local\Temp\b48cb528dfa9d21c44ff9280f0f6b54a92f6a74d3e2b32c1b362db10df2dbd0bN.exe"
    1⤵
    • Adds autorun key to be loaded by Explorer.exe on startup
    • Loads dropped DLL
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2996
    • C:\Windows\SysWOW64\Pbnoliap.exe
      C:\Windows\system32\Pbnoliap.exe
      2⤵
      • Adds autorun key to be loaded by Explorer.exe on startup
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:2808
      • C:\Windows\SysWOW64\Abeemhkh.exe
        C:\Windows\system32\Abeemhkh.exe
        3⤵
        • Adds autorun key to be loaded by Explorer.exe on startup
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in System32 directory
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:2864
        • C:\Windows\SysWOW64\Apalea32.exe
          C:\Windows\system32\Apalea32.exe
          4⤵
          • Adds autorun key to be loaded by Explorer.exe on startup
          • Executes dropped EXE
          • Loads dropped DLL
          • Drops file in System32 directory
          • System Location Discovery: System Language Discovery
          • Modifies registry class
          • Suspicious use of WriteProcessMemory
          PID:2680
          • C:\Windows\SysWOW64\Afnagk32.exe
            C:\Windows\system32\Afnagk32.exe
            5⤵
            • Adds autorun key to be loaded by Explorer.exe on startup
            • Executes dropped EXE
            • Loads dropped DLL
            • Drops file in System32 directory
            • System Location Discovery: System Language Discovery
            • Modifies registry class
            • Suspicious use of WriteProcessMemory
            PID:2844
            • C:\Windows\SysWOW64\Cfnmfn32.exe
              C:\Windows\system32\Cfnmfn32.exe
              6⤵
              • Adds autorun key to be loaded by Explorer.exe on startup
              • Executes dropped EXE
              • Loads dropped DLL
              • Drops file in System32 directory
              • System Location Discovery: System Language Discovery
              • Modifies registry class
              • Suspicious use of WriteProcessMemory
              PID:2900
              • C:\Windows\SysWOW64\Ceegmj32.exe
                C:\Windows\system32\Ceegmj32.exe
                7⤵
                • Executes dropped EXE
                • System Location Discovery: System Language Discovery
                • Suspicious use of WriteProcessMemory
                PID:2208
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -u -p 2208 -s 140
                  8⤵
                  • Loads dropped DLL
                  • Program crash
                  PID:2376

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        Abeemhkh.exe

        • Path C:\Windows\SysWOW64\Abeemhkh.exe
        • Size 370KB
        • SHA256 a2dbceca87356dc8ecd52326d13febcff4612b596838fb7241dfe745f467d0c5
        • MD5 SHA1 SHA512 SSDEEP

        Ceegmj32.exe

        • Path C:\Windows\SysWOW64\Ceegmj32.exe
        • Size 370KB
        • SHA256 194093e75990444b464bf7f98676d70f5ce8b224b753ef82c77150dede8a5862
        • MD5 SHA1 SHA512 SSDEEP

        Mabanhgg.dll

        • Path C:\Windows\SysWOW64\Mabanhgg.dll
        • Size 7KB
        • SHA256 fc4393f42affbb274595e556833b16db2d16d93c4898f2d9db38307f17bf0ad2
        • MD5 SHA1 SHA512 SSDEEP

        Afnagk32.exe

        • Path \Windows\SysWOW64\Afnagk32.exe
        • Size 370KB
        • SHA256 447f658c99bad8e76c5e64096facb0fe0fee38dca1d106c8cc713645e0a5ad28
        • MD5 SHA1 SHA512 SSDEEP

        Apalea32.exe

        • Path \Windows\SysWOW64\Apalea32.exe
        • Size 370KB
        • SHA256 58d546571867a41d1f1cc33e61411d46066f8495594fab329fab15a0f0dc9ab6
        • MD5 SHA1 SHA512 SSDEEP

        Cfnmfn32.exe

        • Path \Windows\SysWOW64\Cfnmfn32.exe
        • Size 370KB
        • SHA256 06a6b66ecde3eba2e1a7c7ad5efcabbfc3a439fc641118b84ae1f93467f8412f
        • MD5 SHA1 SHA512 SSDEEP

        Pbnoliap.exe

        • Path \Windows\SysWOW64\Pbnoliap.exe
        • Size 370KB
        • SHA256 646be5dffd7abadd419bd7809e100d265ef93b9c717ada79f17372d1e704125c
        • MD5 SHA1 SHA512 SSDEEP

        memory/2208-85-0x0000000000400000-0x0000000000434000-memory.dmp

        memory/2208-102-0x0000000000400000-0x0000000000434000-memory.dmp

        memory/2680-55-0x0000000000250000-0x0000000000284000-memory.dmp

        memory/2680-42-0x0000000000400000-0x0000000000434000-memory.dmp

        memory/2680-92-0x0000000000400000-0x0000000000434000-memory.dmp

        memory/2680-49-0x0000000000250000-0x0000000000284000-memory.dmp

        memory/2808-100-0x0000000000400000-0x0000000000434000-memory.dmp

        memory/2808-27-0x0000000000250000-0x0000000000284000-memory.dmp

        memory/2808-14-0x0000000000400000-0x0000000000434000-memory.dmp

        memory/2844-94-0x0000000000400000-0x0000000000434000-memory.dmp

        memory/2844-68-0x0000000000250000-0x0000000000284000-memory.dmp

        memory/2864-99-0x0000000000400000-0x0000000000434000-memory.dmp

        memory/2864-41-0x0000000000290000-0x00000000002C4000-memory.dmp

        memory/2864-28-0x0000000000400000-0x0000000000434000-memory.dmp

        memory/2900-83-0x00000000002C0000-0x00000000002F4000-memory.dmp

        memory/2900-82-0x00000000002C0000-0x00000000002F4000-memory.dmp

        memory/2900-96-0x0000000000400000-0x0000000000434000-memory.dmp

        memory/2900-70-0x0000000000400000-0x0000000000434000-memory.dmp

        memory/2996-0-0x0000000000400000-0x0000000000434000-memory.dmp

        memory/2996-101-0x0000000000400000-0x0000000000434000-memory.dmp

        memory/2996-7-0x0000000000250000-0x0000000000284000-memory.dmp

        memory/2996-12-0x0000000000250000-0x0000000000284000-memory.dmp