Analysis

  • max time kernel
    3s
  • max time network
    10s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    11-02-2021 15:14

General

  • Target

    yytr.png.dll

  • Size

    463KB

  • MD5

    ba2befa9c70c2b6d779c48a59cece3e5

  • SHA1

    4c855f80076e357d35c7d60cd52d2c49abefc5ff

  • SHA256

    9c51cbe4681facc34623aeca27a18dbaa6db1337990a0e003b7c9babeb06c1eb

  • SHA512

    bdc4e33de9de4cf27d1df05e22163c6a3ef0d2406d80cb51db34139bf08cc3a923b079686fbc0a1b359ee46447eb0583c3343360d7e755179e9661c4a503047e

Malware Config

Extracted

Family

gozi_ifsb

Botnet

3131

C2

c.s-microsoft.com

firebaseremoteconfig.googleapis.com

pronpepsipirpyamvioerd.com

80.208.230.180

Attributes
  • build

    250177

  • dga_base_url

    constitution.org/usdeclar.txt

  • dga_crc

    0x4eb7d2ca

  • dga_season

    10

  • dga_tlds

    com

    ru

    org

  • dns_servers

    107.174.86.134

    107.175.127.22

  • exe_type

    loader

  • server_id

    12

rsa_pubkey.base64
serpent.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\yytr.png.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1784
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\yytr.png.dll,#1
      2⤵
        PID:1896

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1896-2-0x0000000000000000-mapping.dmp
    • memory/1896-3-0x00000000760D1000-0x00000000760D3000-memory.dmp
      Filesize

      8KB

    • memory/1896-5-0x0000000000280000-0x000000000028D000-memory.dmp
      Filesize

      52KB

    • memory/1896-4-0x0000000000170000-0x0000000000171000-memory.dmp
      Filesize

      4KB

    • memory/1896-6-0x00000000002B0000-0x00000000002BF000-memory.dmp
      Filesize

      60KB