Analysis

  • max time kernel
    175s
  • max time network
    189s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    26-06-2022 06:05

General

  • Target

    th769kg7.dll

  • Size

    785KB

  • MD5

    24499a2accccfce4f2fa27621c832167

  • SHA1

    85e91e7ff19d5438e84422b367acbc32a6ffad4b

  • SHA256

    6f7620033e5a6b1283b801c2c97d2bd5dcacb72a2b1ba709b6a763394c6a6aca

  • SHA512

    9d0564d490c9b74d39c11620719315ed51589bfe48e366a8ea9c63d5eb6dc3f5320649f6a636bb7beb27a1fdd527ded5a39eeebb54ae28f816dbf74b3a03e0ad

Malware Config

Extracted

Family

dridex

Botnet

10444

C2

209.20.87.138:443

198.1.115.153:8172

151.236.29.248:6516

rc4.plain
rc4.plain

Signatures

  • Dridex

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

  • Blocklisted process makes network request 1 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 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\th769kg7.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2548
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\th769kg7.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Checks whether UAC is enabled
      PID:4024

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/4024-130-0x0000000000000000-mapping.dmp
  • memory/4024-132-0x0000000075540000-0x000000007565B000-memory.dmp
    Filesize

    1.1MB

  • memory/4024-131-0x0000000075540000-0x000000007557D000-memory.dmp
    Filesize

    244KB

  • memory/4024-134-0x0000000075540000-0x000000007565B000-memory.dmp
    Filesize

    1.1MB