Analysis

  • max time kernel
    8s
  • max time network
    65s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    19-11-2020 13:04

General

  • Target

    qz0h69pdf.dll

  • Size

    539KB

  • MD5

    ba7ddbd663a50b149b22d810f4211207

  • SHA1

    06faf7fce11b89e4119c70c5a8cb56d97ab68bab

  • SHA256

    eb1a0c3677f4b416e43e2c4d88a30d1f5bd4d9b00b1e0c48efef31b034465e3c

  • SHA512

    cc26dd7686669b6af424cf6da3114e2fa2d5131a165f3711893ff4a9952c66918f080bf7593cf9010a8d63cfda2f447cb30fea321838cbf95c6415615307b403

Malware Config

Extracted

Family

dridex

Botnet

10555

C2

162.241.44.26:9443

192.232.229.53:4443

77.220.64.34:443

193.90.12.121:3098

rc4.plain
rc4.plain

Signatures

  • Dridex

    Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.

  • Dridex Loader 1 IoCs

    Detects Dridex both x86 and x64 loader in memory.

  • Blocklisted process makes network request 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\qz0h69pdf.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:744
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\qz0h69pdf.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Checks whether UAC is enabled
      PID:1764

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1756-2-0x000007FEF7900000-0x000007FEF7B7A000-memory.dmp
    Filesize

    2MB

  • memory/1764-0-0x0000000000000000-mapping.dmp
  • memory/1764-1-0x00000000003D0000-0x000000000040D000-memory.dmp
    Filesize

    244KB