Analysis

  • max time kernel
    27s
  • max time network
    124s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    21-06-2021 20:05

General

  • Target

    bytesRCount.jpg.dll

  • Size

    306KB

  • MD5

    49af33aa7ecc1a785c1fe96c1946aad1

  • SHA1

    8c2d963af567367151400c4558e21e5711d1707d

  • SHA256

    2da9852912cf01db29e1b3db4a1b9599979ac3c63a6522f5a4a771938c2b36db

  • SHA512

    dab397abb7c719f28b60e3726f54e2e60be871ca63d0a22d170c55074dc87bddbdb6f56d279b913d340d820e0ebe7214196b0de6bce7d40d3acd301bef759d81

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.base64
serpent.plain

Signatures

  • Gozi, Gozi IFSB

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\bytesRCount.jpg.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1852
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\bytesRCount.jpg.dll,#1
      2⤵
        PID:1636

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1636-114-0x0000000000000000-mapping.dmp
    • memory/1636-115-0x0000000073DC0000-0x0000000073DCD000-memory.dmp
      Filesize

      52KB

    • memory/1636-116-0x0000000073DC0000-0x0000000073EAA000-memory.dmp
      Filesize

      936KB

    • memory/1636-117-0x0000000000600000-0x0000000000601000-memory.dmp
      Filesize

      4KB