Analysis

  • max time kernel
    20s
  • max time network
    63s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    26-11-2020 07:49

General

  • Target

    Unrthppaf.bin.dll

  • Size

    426KB

  • MD5

    2b47214db606e21fb5d58cc7c3a27242

  • SHA1

    8b71bd0a2618d26a16a85245e7a92aef6d3da967

  • SHA256

    b12b65a39a6261016b7473cfd08c316cee6958739e00bb746331bdfb52b4b0bb

  • SHA512

    908057911bc6458f608700814b65be5706825314181f54ca42bd3745dd856cdee85a7b39a5d6f7c57e3203951e4c86578ad4079bfd1d5189a876c714c984c8fe

Malware Config

Extracted

Family

dridex

Botnet

10555

C2

194.225.58.216:443

178.254.40.132:691

216.172.165.70:3889

198.57.200.100:3786

rc4.plain
rc4.plain

Signatures

  • Dridex

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

  • Dridex Loader 1 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\Unrthppaf.bin.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1992
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\Unrthppaf.bin.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Checks whether UAC is enabled
      PID:1132

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/1132-0-0x0000000000000000-mapping.dmp
  • memory/1132-1-0x00000000003D0000-0x000000000040D000-memory.dmp
    Filesize

    244KB

  • memory/1768-2-0x000007FEF7B20000-0x000007FEF7D9A000-memory.dmp
    Filesize

    2.5MB