General

  • Target

    f7361813973bf5358dfe900784ab0c2cddd70ad3c1bfdeac1b1de494ffb2a3fa.zip

  • Size

    855KB

  • Sample

    230308-ngxk2sfd71

  • MD5

    c7bd82fdbc479c4b021da01281529fc4

  • SHA1

    020f8db869b254606e3aecdd46dbdff61627a7e0

  • SHA256

    21e35a814d7c1d9ba05823d5e73b4ed5e572a9bf76c1770b89b6fd5edc652ae8

  • SHA512

    3aaca1fb3f31820735802f80d5b79f1c50641f1c2f1596738d2865b19e2eadce3f04cdcaeaa27970452a0a569478b5a0f652b3c87a04d512dcc9f5df01f76f23

  • SSDEEP

    24576:K6hbdzO3VU+Nip1ebVQrYUUdBNWqMHyE5s1JTvMaUn:ZjzExNip1ebVc30NQHXO1xU1

Malware Config

Extracted

Family

remcos

Botnet

XP

C2

xpremcuz300622.ddns.net:3542

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    oos.exe

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Remcos-MMP2I7

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    kkl

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      f7361813973bf5358dfe900784ab0c2cddd70ad3c1bfdeac1b1de494ffb2a3fa.exe

    • Size

      1.0MB

    • MD5

      6ffcaa9d57ed36d74cac808ffc5fc9b6

    • SHA1

      89c88ac7b1420300e2f63b5a7f863c7f672ba959

    • SHA256

      f7361813973bf5358dfe900784ab0c2cddd70ad3c1bfdeac1b1de494ffb2a3fa

    • SHA512

      49f0afba5127f6caef4a78c3c1450c362543fa88b6eb9921d3621760912914b21aa19e55c3e780c13b21693e645bd151eeb83d58e03746f26434decf8d434676

    • SSDEEP

      24576:y/OFMbQyXyXhZVTR0z71BM2TRkB6huiR3BSpNoVf0LTsIBMNjnNNOhAe/S0:dHyXyXQHFTRkB6hulb80

    • Remcos

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

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Tasks