Analysis

  • max time kernel
    34s
  • max time network
    75s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    20-04-2021 05:20

General

  • Target

    c87fce2e5c2e8682924f080ba2eaa6224628502c34fbe8ff94959a0dc4d5afd1.dll

  • Size

    923KB

  • MD5

    0bc8062c38ad87810d19855311fb03e9

  • SHA1

    4f7dfc05f06f241d89043a675d7b300dd5e660bc

  • SHA256

    c87fce2e5c2e8682924f080ba2eaa6224628502c34fbe8ff94959a0dc4d5afd1

  • SHA512

    bf43a772c1338b7892686fdbd31f45f3752f1c056f05bbb20d6302ff601ed027aa05fd9cdedefa5ac638e518684c1bee536c420f6207a13f02bf722ad2b7d5fe

Malware Config

Extracted

Family

dridex

Botnet

10444

C2

146.185.170.249:443

62.75.251.60:6601

185.148.168.25:2303

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 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\c87fce2e5c2e8682924f080ba2eaa6224628502c34fbe8ff94959a0dc4d5afd1.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3944
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\c87fce2e5c2e8682924f080ba2eaa6224628502c34fbe8ff94959a0dc4d5afd1.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Checks whether UAC is enabled
      PID:4068

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/4068-114-0x0000000000000000-mapping.dmp
  • memory/4068-116-0x00000000735E0000-0x00000000736E0000-memory.dmp
    Filesize

    1024KB

  • memory/4068-115-0x00000000735E0000-0x000000007361D000-memory.dmp
    Filesize

    244KB

  • memory/4068-119-0x00000000004A0000-0x00000000005EA000-memory.dmp
    Filesize

    1.3MB