Analysis

  • max time kernel
    154s
  • max time network
    160s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-01-2023 08:01

General

  • Target

    ubabalo logs.exe

  • Size

    1.8MB

  • MD5

    84528fbc769f9d1f9858ac7f3e2b771e

  • SHA1

    2facdf0f04ac13a31a463fec11c1a96b97ba95a8

  • SHA256

    6256a9de45ff5b2c8f1f0462de2f96e730df80bed12f227caff765646b730e80

  • SHA512

    be8bc54e340898ed9e97029deea743349475080b5ce3197917fd77258f8bfdc8418457a45c938eed05bd945eed6b9879fd7e8c2e22255022ba589ef1975337c1

  • SSDEEP

    24576:Srps73f4UQJjDDlGQ5kRQ6o0p54F28zsmlVFLA8FiHV2T7PajK7/rwd1lI7KWTe+:CiSP5NNrL5I23PN/v9eIFDei

Malware Config

Extracted

Family

remcos

Version

2.7.1 Pro

Botnet

MIMIBOY

C2

91.231.84.41:52651

127.0.0.1:52651

10.5.175.21:52651

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • 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

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-SURYWD

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    wikipedia;solitaire;

Signatures

  • Remcos

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ubabalo logs.exe
    "C:\Users\Admin\AppData\Local\Temp\ubabalo logs.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1776
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:572
    • C:\Users\Admin\AppData\Local\Temp\ubabalo logs.exe
      "C:\Users\Admin\AppData\Local\Temp\ubabalo logs.exe"
      2⤵
        PID:288

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/288-74-0x0000000000413FA4-mapping.dmp
    • memory/288-70-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB

    • memory/288-78-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB

    • memory/288-64-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB

    • memory/288-73-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB

    • memory/288-71-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB

    • memory/288-69-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB

    • memory/288-65-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB

    • memory/288-79-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB

    • memory/288-77-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB

    • memory/288-67-0x0000000000400000-0x0000000000421000-memory.dmp
      Filesize

      132KB

    • memory/572-62-0x000000006EBE0000-0x000000006F18B000-memory.dmp
      Filesize

      5.7MB

    • memory/572-61-0x000000006EBE0000-0x000000006F18B000-memory.dmp
      Filesize

      5.7MB

    • memory/572-60-0x000000006EBE0000-0x000000006F18B000-memory.dmp
      Filesize

      5.7MB

    • memory/572-58-0x0000000000000000-mapping.dmp
    • memory/1776-55-0x0000000075F01000-0x0000000075F03000-memory.dmp
      Filesize

      8KB

    • memory/1776-54-0x0000000001140000-0x0000000001320000-memory.dmp
      Filesize

      1.9MB

    • memory/1776-57-0x0000000004720000-0x00000000047B2000-memory.dmp
      Filesize

      584KB

    • memory/1776-56-0x00000000052B0000-0x0000000005414000-memory.dmp
      Filesize

      1.4MB

    • memory/1776-63-0x0000000005040000-0x000000000508C000-memory.dmp
      Filesize

      304KB