Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    25-10-2021 21:22

General

  • Target

    4edfb1b3a28524cdf10d2e10ba4e6411013607949359987c07d3d715bfca3cce.dll

  • Size

    497KB

  • MD5

    11e1bb1bb27820c92a7c4a4c1a356184

  • SHA1

    99755d73681d052d3391c9f2b90030272faa640f

  • SHA256

    4edfb1b3a28524cdf10d2e10ba4e6411013607949359987c07d3d715bfca3cce

  • SHA512

    52effae2a754dcd59501620f3567bf3f4ed4e2faad02d15dbf53483710e2504be572b35f5cce74a1923df6f77641acfd612cc99e829d27787b5827c4b14063c8

Malware Config

Extracted

Family

gozi_ifsb

Botnet

1500

C2

apt.updateffboruse.com

app.updatebrouser.com

Attributes
  • build

    250211

  • 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.

  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\4edfb1b3a28524cdf10d2e10ba4e6411013607949359987c07d3d715bfca3cce.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1240
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\4edfb1b3a28524cdf10d2e10ba4e6411013607949359987c07d3d715bfca3cce.dll,#1
      2⤵
        PID:1524

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1524-55-0x0000000000000000-mapping.dmp
    • memory/1524-56-0x0000000076531000-0x0000000076533000-memory.dmp
      Filesize

      8KB

    • memory/1524-57-0x00000000750F0000-0x0000000075208000-memory.dmp
      Filesize

      1.1MB

    • memory/1524-59-0x00000000000C0000-0x00000000000C1000-memory.dmp
      Filesize

      4KB

    • memory/1524-60-0x00000000750F0000-0x0000000075208000-memory.dmp
      Filesize

      1.1MB

    • memory/1524-58-0x00000000750F0000-0x00000000750FD000-memory.dmp
      Filesize

      52KB