Analysis

  • max time kernel
    62s
  • max time network
    132s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    04-03-2021 20:13

General

  • Target

    05beaaca0b95a13fe62150388d666ee851c626b8e8862661d3803edbd2ba234a.dll

  • Size

    196KB

  • MD5

    91ce646ecb8d5468552f6e66c499e2f8

  • SHA1

    a88d652aa995be78c66323b443af29bd496b031d

  • SHA256

    05beaaca0b95a13fe62150388d666ee851c626b8e8862661d3803edbd2ba234a

  • SHA512

    4a8de20a4242dd6b76f5e9987ed76dde120c1636b90da813563333fa42a2f1fa8f5d67b3c1e027c27f6f57e79edca6e3b55c4f5dee2b1922178222965abc4b34

Malware Config

Extracted

Family

dridex

Botnet

111

C2

37.247.35.132:443

50.243.30.51:6601

162.241.204.234:6516

rc4.plain
rc4.plain

Signatures

  • Dridex

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

  • Dridex Loader 2 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 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\05beaaca0b95a13fe62150388d666ee851c626b8e8862661d3803edbd2ba234a.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4692
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\05beaaca0b95a13fe62150388d666ee851c626b8e8862661d3803edbd2ba234a.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Checks whether UAC is enabled
      PID:4716

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/4716-2-0x0000000000000000-mapping.dmp
  • memory/4716-3-0x0000000075A50000-0x0000000075A83000-memory.dmp
    Filesize

    204KB

  • memory/4716-4-0x00000000006E0000-0x00000000006E6000-memory.dmp
    Filesize

    24KB

  • memory/4716-5-0x0000000075A50000-0x0000000075A6F000-memory.dmp
    Filesize

    124KB