General

  • Target

    PO_3421.msi

  • Size

    2.3MB

  • Sample

    220211-hzzkgacbe4

  • MD5

    30a04930a6888a2df882478fef4a7ade

  • SHA1

    c91b1b550c3a74840f3066e7a4b0fe08c37b7d2a

  • SHA256

    1f7830f0117f694b87ae81caed022c82174f9a8d158a0b8e127154e17d1600cc

  • SHA512

    b101b58533e61dd8fe8d27af36cb3c6300927286a51994bb7adbafac63ff20af61196660bc79f3f6ffef1e9975be8d06d9ed0c88891389abedcf823480565b49

Malware Config

Extracted

Family

arkei

Botnet

Default

C2

http://62.204.41.172/h3nwk7uvsH.php

Targets

    • Target

      PO_3421.msi

    • Size

      2.3MB

    • MD5

      30a04930a6888a2df882478fef4a7ade

    • SHA1

      c91b1b550c3a74840f3066e7a4b0fe08c37b7d2a

    • SHA256

      1f7830f0117f694b87ae81caed022c82174f9a8d158a0b8e127154e17d1600cc

    • SHA512

      b101b58533e61dd8fe8d27af36cb3c6300927286a51994bb7adbafac63ff20af61196660bc79f3f6ffef1e9975be8d06d9ed0c88891389abedcf823480565b49

    • Arkei

      Arkei is an infostealer written in C++.

    • Arkei Stealer Payload

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

File Permissions Modification

1
T1222

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

4
T1012

Peripheral Device Discovery

2
T1120

System Information Discovery

4
T1082

Collection

Data from Local System

2
T1005

Tasks