Analysis

  • max time kernel
    29s
  • max time network
    141s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    05-03-2021 07:32

General

  • Target

    a911db267857a504e53afc4bd6f7815e.dll

  • Size

    196KB

  • MD5

    a911db267857a504e53afc4bd6f7815e

  • SHA1

    2ef7d72436383ed1fdb4c7a7f58dadb34235fb2a

  • SHA256

    6e1f7390466479422f84acdcaa84a33da65ec60d8e8e64d588404e9ec85d38dd

  • SHA512

    e0b7c4f1b4efa16360feb117a5139a1e68271d4abe1ca442ea57c9746bea8e9ee25981a56fce425d13b1dec9a0cda59927b71bbb656cae60252d719fcb5be9f4

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\a911db267857a504e53afc4bd6f7815e.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1048
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\a911db267857a504e53afc4bd6f7815e.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Checks whether UAC is enabled
      PID:1468

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/1468-2-0x0000000000000000-mapping.dmp
  • memory/1468-3-0x0000000000A10000-0x0000000000A16000-memory.dmp
    Filesize

    24KB

  • memory/1468-4-0x00000000738C0000-0x00000000738F3000-memory.dmp
    Filesize

    204KB

  • memory/1468-5-0x00000000738C0000-0x00000000738DF000-memory.dmp
    Filesize

    124KB