Analysis

  • max time kernel
    29s
  • max time network
    121s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    05-03-2021 02:09

General

  • Target

    2d662a20b7b4d8b936667af61a8ce94e0f5c57fd8e770ec08e631fdaa9140052.dll

  • Size

    196KB

  • MD5

    718a87b6a448af03e07d25490287e883

  • SHA1

    c017537f8ef62dec110a8696a6ecb7188f37283f

  • SHA256

    2d662a20b7b4d8b936667af61a8ce94e0f5c57fd8e770ec08e631fdaa9140052

  • SHA512

    828ff14cf8ca8109e66efe57633e94483213854362026d4be4419a18e6f678d7d82f268a2b77bc25b7162e64134e56a3ec363b11601c775c80b67970a6346168

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\2d662a20b7b4d8b936667af61a8ce94e0f5c57fd8e770ec08e631fdaa9140052.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1628
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\2d662a20b7b4d8b936667af61a8ce94e0f5c57fd8e770ec08e631fdaa9140052.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Checks whether UAC is enabled
      PID:1236

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/1236-2-0x0000000000000000-mapping.dmp
  • memory/1236-3-0x0000000073CA0000-0x0000000073CD3000-memory.dmp
    Filesize

    204KB

  • memory/1236-4-0x00000000005D0000-0x00000000005D6000-memory.dmp
    Filesize

    24KB

  • memory/1236-5-0x0000000073CA0000-0x0000000073CBF000-memory.dmp
    Filesize

    124KB