Analysis

  • max time kernel
    137s
  • max time network
    141s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    26-10-2021 19:39

General

  • Target

    b938df3257c4c0f916955b0a689dd280.dll

  • Size

    942KB

  • MD5

    b938df3257c4c0f916955b0a689dd280

  • SHA1

    8058abf1aa17283ab8c6fe65e303011f46cda884

  • SHA256

    79ab62103a0d4eb9fe40aa94aa9d2f2f669c1bcf29119930ede17bb4cd1a9d6c

  • SHA512

    80df5775165e17d44374bd8e794ff690ecf5c4ab087977df58d476a180dfdc9babe35e124cac2957448aa2b6904aaf6a297af9584541c438c4a9d582c0f77897

Malware Config

Extracted

Family

gozi_ifsb

Botnet

8899

C2

msn.com/mail

realitystorys.com

outlook.com/signup

gderrrpololo.net

Attributes
  • build

    260212

  • dga_season

    10

  • exe_type

    loader

  • server_id

    12

rsa_pubkey.plain
serpent.plain

Signatures

  • Gozi, Gozi IFSB

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

  • Blocklisted process makes network request 9 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\b938df3257c4c0f916955b0a689dd280.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4328
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\b938df3257c4c0f916955b0a689dd280.dll,#1
      2⤵
      • Blocklisted process makes network request
      PID:3020

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • memory/3020-115-0x0000000000000000-mapping.dmp
  • memory/3020-116-0x0000000074290000-0x0000000074394000-memory.dmp
    Filesize

    1.0MB

  • memory/3020-117-0x0000000074290000-0x000000007429F000-memory.dmp
    Filesize

    60KB

  • memory/3020-118-0x0000000074290000-0x0000000074394000-memory.dmp
    Filesize

    1.0MB

  • memory/3020-119-0x0000000000AE0000-0x0000000000AE1000-memory.dmp
    Filesize

    4KB