Analysis

  • max time kernel
    106s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    19/10/2022, 10:41

General

  • Target
    1479.lnk
  • Size 1KB
  • Sample221019-mrbkwsfhal
  • SHA256 95d75f9f60c28efec7ec43966a0379063aa9c7ca5351f23c77dc3e67050f559a
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • gozi_ifsb

Botnet
  • 5000

C2
  • config.edge.skype.com

  • onlinetwork.top

  • linetwork.top

Attributes
  • base_path

    /drew/

  • build

    250246

  • exe_type

    loader

  • extension

    .jlk

  • server_id

    50

rsa_pubkey.plain
aes.plain

Signatures

  • Gozi, Gozi IFSB

    Gozi ISFB is a well-known and widely distributed banking trojan.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\1479.lnk
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1520
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c internee\champ.cmd dll32.exe tem dows
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1924
      • C:\Users\Admin\AppData\Local\Temp\xxl.exe
        C:\Users\Admin\AppData\Local\Temp\xxl.exe internee\boutiques.3ds,DllRegisterServer
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:1764
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Users\Admin\AppData\Local\Temp\xxl.exe internee\boutiques.3ds,DllRegisterServer
          4⤵
            PID:1180

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          xxl.exe

          • Path C:\Users\Admin\AppData\Local\Temp\xxl.exe
          • Size 44KB
          • SHA256 f5691b8f200e3196e6808e932630e862f8f26f31cd949981373f23c9d87db8b9
          • MD5 SHA1 SHA512 SSDEEP

          xxl.exe

          • Path C:\Users\Admin\AppData\Local\Temp\xxl.exe
          • Size 44KB
          • SHA256 f5691b8f200e3196e6808e932630e862f8f26f31cd949981373f23c9d87db8b9
          • MD5 SHA1 SHA512 SSDEEP

          xxl.exe

          • Path \Users\Admin\AppData\Local\Temp\xxl.exe
          • Size 44KB
          • SHA256 f5691b8f200e3196e6808e932630e862f8f26f31cd949981373f23c9d87db8b9
          • MD5 SHA1 SHA512 SSDEEP

          memory/1180-97-0x0000000074D61000-0x0000000074D63000-memory.dmp

          memory/1180-98-0x0000000010000000-0x000000001000E000-memory.dmp

          memory/1180-103-0x00000000001B0000-0x00000000001B5000-memory.dmp

          memory/1180-104-0x00000000001E0000-0x00000000001ED000-memory.dmp

          memory/1520-54-0x000007FEFB801000-0x000007FEFB803000-memory.dmp