Resubmissions

03-01-2024 12:33

240103-prfkysfef9 10

02-01-2024 23:31

240102-3hxd1aedb9 10

Analysis

  • max time kernel
    361s
  • max time network
    362s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    02-01-2024 23:31

General

  • Target

    Domashka.exe

  • Size

    7.7MB

  • MD5

    86e863875266e8345097c29d15741a8b

  • SHA1

    ab5524d7f698de5928397f3506645ba952103e4a

  • SHA256

    bb5d7edc909a7ea29836a501dddd5244d33d342ec6f75c1cf201f14ed55802ac

  • SHA512

    22528bbe743825dbfb09743d2824ad5220125e3240bd4d0bd2f87bdc7d46a259aebc08a6fc2e75d6119d881742348fcde90e05142eaa4f29d9c2bbe88f2ae8d5

  • SSDEEP

    196608:lX5lladq1hZvawTVNi1Fg6rTSGRzyEjNoi5d7nWO7:lHq6vFTIFg63R5j2E7nWG

Malware Config

Extracted

Family

blackguard

C2

https://api.telegram.org/bot6694446290:AAHhatGdMQTZc2j8T6IAfes0OfC6QMBYYSg/sendMessage?chat_id=6485360129

Signatures

  • BlackGuard

    Infostealer first seen in Late 2021.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 8 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Domashka.exe
    "C:\Users\Admin\AppData\Local\Temp\Domashka.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2912
    • C:\Users\Admin\AppData\Local\Temp\v2.exe
      "C:\Users\Admin\AppData\Local\Temp\v2.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2568

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\v2.exe

    Filesize

    92KB

    MD5

    5cd219f313c5655850066f66f8451da8

    SHA1

    6a3d16e34eb530929fed337599c2703367fb9168

    SHA256

    170162f0dbe0e1f4b30f5683a23cd933b945fbbf0a0739921af426fd662d11e9

    SHA512

    67b7175dad7abf3113c992de2483ab7208542eb7c50294797cf7cb1224048b48f64dd34ce8a018ff5a9be178d72a145524557d608feff15815c21f52448b6fba

  • C:\Users\Admin\AppData\Local\Temp\v2.exe

    Filesize

    271KB

    MD5

    85a93044109a70f1bb119d78966a2e4d

    SHA1

    7ecf238e536cf12fa3ff3e57b984f8f147c21266

    SHA256

    433b73b437ad4dd138d5a6a8cea12a4ff7bf93c2c9dc11844ab635b83638ebb8

    SHA512

    30656d405995e5dfc38bd6504463b7290b72f635b6773c1d58b116ee43f3afe0d14eae118139e43448446b6a0ffa4098bbec77ff8580b8df210b32ef1f522691

  • \Users\Admin\AppData\Local\Temp\Newtonsoft.Json.dll

    Filesize

    571KB

    MD5

    169b6d383b7c650ab3ae2129397a6cf3

    SHA1

    fcaef7defb04301fd55fb1421bb15ef96d7040d6

    SHA256

    b896083feb2bdedc1568b62805dbd354c55e57f2d2469a52aec6c98f4ec2dedf

    SHA512

    7a7a7bdb508b8bf177249251c83b65a2ef4a5d8b29397cab130cb8444b23888678673a9a2e4b1c74cc095b358f923b9e7e5a91bfa8c240412d95765851f1dd87

  • memory/2568-26-0x0000000000F00000-0x0000000000F4A000-memory.dmp

    Filesize

    296KB

  • memory/2568-27-0x0000000074A90000-0x000000007517E000-memory.dmp

    Filesize

    6.9MB

  • memory/2568-28-0x0000000000CD0000-0x0000000000D10000-memory.dmp

    Filesize

    256KB

  • memory/2568-68-0x0000000005080000-0x00000000050E8000-memory.dmp

    Filesize

    416KB

  • memory/2568-73-0x0000000000CB0000-0x0000000000CD0000-memory.dmp

    Filesize

    128KB

  • memory/2568-37-0x0000000004FE0000-0x0000000005072000-memory.dmp

    Filesize

    584KB

  • memory/2568-93-0x0000000074A90000-0x000000007517E000-memory.dmp

    Filesize

    6.9MB

  • memory/2568-94-0x0000000000CD0000-0x0000000000D10000-memory.dmp

    Filesize

    256KB

  • memory/2568-123-0x0000000074A90000-0x000000007517E000-memory.dmp

    Filesize

    6.9MB