Analysis

  • max time kernel
    120s
  • max time network
    174s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-07-2022 05:10

General

  • Target

    era5ne6.dll

  • Size

    373KB

  • MD5

    c379b0ae73d8763711c50f57607979fe

  • SHA1

    2affa7b64aa34b84172bbdcd8c5a09f340e6a328

  • SHA256

    ace691c336e0c9a311681ccd4768d52feacc30e13e667ee577a590bff837caa9

  • SHA512

    6790ecd81dd943fdde0f9c03348a8c8f3d0f1a936c89ad3863def66848dc4de58af71d66e6da4a0d54d394d1182897e1c9eb66d64f159886adec3e1d34476e2b

Malware Config

Extracted

Family

dridex

Botnet

10444

C2

210.65.244.179:443

37.247.35.130:6601

103.18.108.116:6601

rc4.plain
rc4.plain

Signatures

  • Dridex

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

  • 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\era5ne6.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4320
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\era5ne6.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Checks whether UAC is enabled
      PID:2116

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/2116-130-0x0000000000000000-mapping.dmp
  • memory/2116-132-0x0000000075830000-0x00000000758EC000-memory.dmp
    Filesize

    752KB

  • memory/2116-131-0x0000000075830000-0x000000007586D000-memory.dmp
    Filesize

    244KB

  • memory/2116-134-0x0000000075830000-0x00000000758EC000-memory.dmp
    Filesize

    752KB