Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    10-11-2024 01:41

General

  • Target

    1528fa1fca6c2db0984a913b9fea07ff034775038c9c2267862d94d9e404e6ffN.exe

  • Size

    100KB

  • MD5

    d4f8e25b60088eff3ef72ddea78cab20

  • SHA1

    d6e3bc4df6334410855a6264e781ad1d61dedd99

  • SHA256

    1528fa1fca6c2db0984a913b9fea07ff034775038c9c2267862d94d9e404e6ff

  • SHA512

    ab68a775493b071ee86249239a0311ec253311dea50def683886e6c47428b5bcb91a566f60a88d7ec91d4ecba27311f47d355eeb751459cef2905b708e7140bc

  • SSDEEP

    3072:v6IkG9sxKkvWr2h95bTcZz5oqJ7gb3a3+X13XRzT:v5kG9mK2OJE7aOl3BzT

Malware Config

Signatures

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

    Berbew is a backdoor written in C++.

  • Berbew family
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Drops file in System32 directory 3 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Modifies registry class 6 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1528fa1fca6c2db0984a913b9fea07ff034775038c9c2267862d94d9e404e6ffN.exe
    "C:\Users\Admin\AppData\Local\Temp\1528fa1fca6c2db0984a913b9fea07ff034775038c9c2267862d94d9e404e6ffN.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:2824
    • C:\Windows\SysWOW64\Cacacg32.exe
      C:\Windows\system32\Cacacg32.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2712
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2712 -s 140
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2800

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\Cacacg32.exe

    Filesize

    100KB

    MD5

    07b018a1c0b0be36cd553e8ac1ed0b22

    SHA1

    e6c0e15e4b448e35f754521b272ab43752817421

    SHA256

    820be018abe5d279b86e5efc4902ba098930d6f5f18291d23f430ff1871082c2

    SHA512

    4090b3b14ac5e9ab8ac980608e1c0d1fa448aca3801561c8bd3eede28ec2a04e26265352a5d2ea3780b49f3f0cbaae6e766e692f8f2742b6f62d0842ed0a5be1

  • memory/2712-14-0x0000000000400000-0x0000000000443000-memory.dmp

    Filesize

    268KB

  • memory/2824-0-0x0000000000400000-0x0000000000443000-memory.dmp

    Filesize

    268KB

  • memory/2824-12-0x00000000002D0000-0x0000000000313000-memory.dmp

    Filesize

    268KB

  • memory/2824-13-0x00000000002D0000-0x0000000000313000-memory.dmp

    Filesize

    268KB

  • memory/2824-19-0x0000000000400000-0x0000000000443000-memory.dmp

    Filesize

    268KB