Resubmissions

24-08-2021 15:27

210824-gr81wz5pan 10

21-06-2021 13:09

210621-c2wlrsx18e 10

Analysis

  • max time kernel
    1785s
  • max time network
    1786s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    24-08-2021 15:27

General

  • Target

    focy1.dll

  • Size

    306KB

  • MD5

    81a57502787fd832d141625494bc6e61

  • SHA1

    73025e06eb644652e5f43d050663b041f687e53f

  • SHA256

    e1c8e34791daee490ba154c10dddf0d43d4cc6910fb08debbd5c722e722ea551

  • SHA512

    aecdf00d939762880c15de0f9377d1a3d4dcbe5f9bbd8d272003bfccc38f7314c862c45e0e387ef7d3ac13bb289136f39b32b7869ee22dd1175577d939c0dada

Malware Config

Extracted

Family

gozi_ifsb

Botnet

6000

C2

authd.feronok.com

app.bighomegl.at

Attributes
  • build

    250204

  • exe_type

    loader

  • server_id

    580

rsa_pubkey.plain
aes.plain

Signatures

  • Gozi, Gozi IFSB

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

  • Modifies Internet Explorer settings 1 TTPs 64 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SetWindowsHookEx 16 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\focy1.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3908
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\focy1.dll,#1
      2⤵
        PID:3952
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2416
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2416 CREDAT:82945 /prefetch:2
        2⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:2840
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1432
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1432 CREDAT:82945 /prefetch:2
        2⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:3332
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3488
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3488 CREDAT:82945 /prefetch:2
        2⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:1936
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1184
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1184 CREDAT:82945 /prefetch:2
        2⤵
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:1960

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    1
    T1112

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1184-125-0x00007FF85D480000-0x00007FF85D4EB000-memory.dmp
      Filesize

      428KB

    • memory/1432-121-0x00007FF85D480000-0x00007FF85D4EB000-memory.dmp
      Filesize

      428KB

    • memory/1936-124-0x0000000000000000-mapping.dmp
    • memory/1960-126-0x0000000000000000-mapping.dmp
    • memory/2416-119-0x00007FF85D480000-0x00007FF85D4EB000-memory.dmp
      Filesize

      428KB

    • memory/2840-120-0x0000000000000000-mapping.dmp
    • memory/3332-122-0x0000000000000000-mapping.dmp
    • memory/3488-123-0x00007FF85D480000-0x00007FF85D4EB000-memory.dmp
      Filesize

      428KB

    • memory/3952-114-0x0000000000000000-mapping.dmp
    • memory/3952-116-0x0000000073AB0000-0x0000000073B9A000-memory.dmp
      Filesize

      936KB

    • memory/3952-115-0x0000000073AB0000-0x0000000073ABD000-memory.dmp
      Filesize

      52KB

    • memory/3952-117-0x0000000000A40000-0x0000000000A41000-memory.dmp
      Filesize

      4KB