Resubmissions

01-02-2023 17:02

230201-vj6p3aah39 10

01-02-2023 17:00

230201-vjf5eacg4s 10

01-02-2023 16:57

230201-vgbrxacg2y 10

Analysis

  • max time kernel
    149s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    01-02-2023 17:00

General

  • Target

    DHL SHIPPING DOC PDF.exe

  • Size

    1.0MB

  • MD5

    6d452842eeb2efa505763049d59c553a

  • SHA1

    e13f2202155e12573a985b5df24319e5320f588e

  • SHA256

    52e2a0d6ec4940ac71db48d62f8de4fa9ea7ea4a0abfaff91175ea2e0ec0d998

  • SHA512

    c37faf01a77690351e6cd47196821dddca39a3df07a9286b17e2916fc107429ddadc5dc9fa695bfb52ab8105a1e41b1367c6d68472dac64ecb47f9a9be4add54

  • SSDEEP

    24576:uL5mA6W5L4EAyxtiH5wkm99RtPK7TQXQyRU5JqG4yPa:eJ41OtiH5wbbRucXQyRU8

Score
10/10

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

51.75.209.245:2406

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

    Rmc-52YOYG

  • 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

Signatures

  • Remcos

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DHL SHIPPING DOC PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL SHIPPING DOC PDF.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:280
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\DHL SHIPPING DOC PDF.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1696
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\gpnAwW.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:900
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gpnAwW" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCBA9.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1600
    • C:\Users\Admin\AppData\Local\Temp\DHL SHIPPING DOC PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\DHL SHIPPING DOC PDF.exe"
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:1460

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpCBA9.tmp
    Filesize

    1KB

    MD5

    287bee001d261c79c63c237729c971a8

    SHA1

    3c29333b953da55fd1c1524878faadfa9f4bf637

    SHA256

    cbf917bef0caa224ae75f884a8db021a35f6723b4a8ad2ee561a43a2242f8605

    SHA512

    7ee23022628b77e8db72c0de4436760e0303c5cd1b907cd4a031a5bad50e93090d94067e6760749404cf9f63ff6d8f5291705d6307d9326e88d0569e9e1d7afe

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
    Filesize

    7KB

    MD5

    a7eab551e17425353a0bb0041ef5cb05

    SHA1

    c908c662993796916a67a61136d743769153fb33

    SHA256

    7793d9a76bf7bfdf92123842bffaf4ea0886f245008855fc7640a329c59a4aef

    SHA512

    e006374563ae93a93c710aff6a001ed31e78d06401b235941d3a994016b8cd10c6c44f810f85a195b2552eda9aa4c94b5e6ad986939c5bf7b93469af953f8db3

  • memory/280-66-0x00000000080C0000-0x000000000813C000-memory.dmp
    Filesize

    496KB

  • memory/280-55-0x0000000076831000-0x0000000076833000-memory.dmp
    Filesize

    8KB

  • memory/280-56-0x0000000000390000-0x00000000003A4000-memory.dmp
    Filesize

    80KB

  • memory/280-57-0x00000000004B0000-0x00000000004BA000-memory.dmp
    Filesize

    40KB

  • memory/280-58-0x0000000005FB0000-0x0000000006062000-memory.dmp
    Filesize

    712KB

  • memory/280-54-0x0000000000C60000-0x0000000000D68000-memory.dmp
    Filesize

    1.0MB

  • memory/900-85-0x000000006F9B0000-0x000000006FF5B000-memory.dmp
    Filesize

    5.7MB

  • memory/900-60-0x0000000000000000-mapping.dmp
  • memory/1460-68-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1460-75-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1460-87-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1460-70-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1460-72-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1460-73-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1460-74-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1460-67-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1460-77-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1460-79-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1460-80-0x0000000000432C26-mapping.dmp
  • memory/1460-83-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1460-86-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1600-61-0x0000000000000000-mapping.dmp
  • memory/1696-84-0x000000006F9B0000-0x000000006FF5B000-memory.dmp
    Filesize

    5.7MB

  • memory/1696-59-0x0000000000000000-mapping.dmp