Analysis

  • max time kernel
    31s
  • max time network
    90s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    05-03-2021 23:33

General

  • Target

    3d3f1272e9a4df7b1de123b9ed551860b00f5ace6d449b7f78c98ca5c7027d69.dll

  • Size

    168KB

  • MD5

    84b5530f6f18391bcf54d2cdfc39eca4

  • SHA1

    dfe936981c6d7076238e2ce6ba929a2e24dcbe7a

  • SHA256

    3d3f1272e9a4df7b1de123b9ed551860b00f5ace6d449b7f78c98ca5c7027d69

  • SHA512

    2169e3b25886d15d5965c59335b89532bfbbffbe5a3c24f5b917c83c48e3146a5f88e989ce623761c37279921419bf58306b1bbec9d7af190886f5a2d98cc28e

Malware Config

Extracted

Family

dridex

Botnet

111

C2

173.203.78.138:443

217.160.107.189:6601

77.220.64.150:5037

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 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\3d3f1272e9a4df7b1de123b9ed551860b00f5ace6d449b7f78c98ca5c7027d69.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1832
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\3d3f1272e9a4df7b1de123b9ed551860b00f5ace6d449b7f78c98ca5c7027d69.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Checks whether UAC is enabled
      PID:1072

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/1072-2-0x0000000000000000-mapping.dmp
  • memory/1072-3-0x0000000076191000-0x0000000076193000-memory.dmp
    Filesize

    8KB

  • memory/1072-4-0x0000000074FC0000-0x0000000074FEC000-memory.dmp
    Filesize

    176KB

  • memory/1072-5-0x00000000001E0000-0x00000000001E6000-memory.dmp
    Filesize

    24KB

  • memory/1072-6-0x0000000074FC0000-0x0000000074FDF000-memory.dmp
    Filesize

    124KB

  • memory/1660-7-0x000007FEF7F80000-0x000007FEF81FA000-memory.dmp
    Filesize

    2.5MB