Overview

overview

10

Static

static

3

CodeBlock-....1.exe

windows7-x64

10

CodeBlock-....1.exe

windows10-2004-x64

10

devobj.dll

windows10-2004-x64

1

lmhsvc.dll

windows10-2004-x64

1

tzsyncres.dll

windows10-2004-x64

1

Sharing

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General

  • Target
    2baa36ebea1ad309fa1083845b0510d4ea439bd52463c67dc1376a722c2e9fbb.zip
  • Size 3.4MB
  • Sample240519-kr5gvsbb53
  • SHA256 2baa36ebea1ad309fa1083845b0510d4ea439bd52463c67dc1376a722c2e9fbb
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
remcos22077rat

Malware Config

Extracted

Family

  • remcos

Botnet

  • 22077

C2

  • 195.54.170.36:22077

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    VB786YNr-ICKPAO

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target
      CodeBlock-wallet_v1.3.1.exe
    • Size 99.4MB
    • SHA256 0afab6861707ce6ad25f50fdf52af8dc3e637ba4c0fac93443fe073274cdc742
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    remcos22077rat

    • Remcos

      Remcos is a closed-source remote control and surveillance software.

      ratremcos

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Suspicious use of SetThreadContext

    behavioral1behavioral2
    • Target
      devobj.dll
    • Size 191KB
    • SHA256 7733dead6be48945e9c711432208e4f3ee102453ea43ecf6f4bd4a1ad95961f5
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    behavioral3
    • Target
      lmhsvc.dll
    • Size 25KB
    • SHA256 71f33fd997d36b8cfb7fd36397cb768aef1b6329b3882d445b72246621f3bd7e
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    behavioral4
    • Target
      tzsyncres.dll
    • Size 4KB
    • SHA256 366905e144e8e19b6d73719c189c9b37222b5e2646e6cf295f6fd8456a899701
    • MD5 SHA1 SHA512
    Score
    1/10
    behavioral5

MITRE ATT&CK Enterprise v15

Tasks