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
    151s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 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⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4728
    • 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:4512
    • 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:32
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gpnAwW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp350A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:224
    • 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:3852

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

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
    Filesize

    18KB

    MD5

    5cf19b4d3831c3c89ae34ed4ef07b1a0

    SHA1

    2f09ae87a2cc02cc526af39a3f83f52ac5baef3c

    SHA256

    5a4a22498e4d2a0846fb192eac8fbebfaad0cd1c0b608ee33cbd34d18eb4626b

    SHA512

    adeadfd825c9780cf3ec03062a2a14bb14c71491291f155c19b783508baaba0bc75244cf691ac1c691504b81ba68d594aa43caf7386b001e9ba45106053d0f89

  • C:\Users\Admin\AppData\Local\Temp\tmp350A.tmp
    Filesize

    1KB

    MD5

    b74a0634dff566a8234f497c4d9bf210

    SHA1

    9a76558f96edc86644bda6277fa9ff55240803bb

    SHA256

    eda0ad5ad9766fc38ff94d0bd3bcb5e9f40b3bd8f6206e89dee78682a523ab63

    SHA512

    2fe44a9756121dab63228af91bd22b6ceab33e621e56198d01f232c6e9043af634c7f1620ef22d0328f49fd7c1ae05cf04995e6d2553e93f9df78860b4fb84d7

  • memory/32-142-0x00000000050E0000-0x0000000005102000-memory.dmp
    Filesize

    136KB

  • memory/32-156-0x0000000007B10000-0x000000000818A000-memory.dmp
    Filesize

    6.5MB

  • memory/32-154-0x0000000073310000-0x000000007335C000-memory.dmp
    Filesize

    304KB

  • memory/32-152-0x0000000006790000-0x00000000067C2000-memory.dmp
    Filesize

    200KB

  • memory/32-138-0x0000000000000000-mapping.dmp
  • memory/32-144-0x0000000005B80000-0x0000000005BE6000-memory.dmp
    Filesize

    408KB

  • memory/32-143-0x0000000005960000-0x00000000059C6000-memory.dmp
    Filesize

    408KB

  • memory/224-139-0x0000000000000000-mapping.dmp
  • memory/3852-149-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/3852-165-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/3852-151-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/3852-146-0x0000000000000000-mapping.dmp
  • memory/3852-147-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/3852-148-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/4512-153-0x0000000073310000-0x000000007335C000-memory.dmp
    Filesize

    304KB

  • memory/4512-162-0x0000000007740000-0x0000000007748000-memory.dmp
    Filesize

    32KB

  • memory/4512-140-0x0000000004B50000-0x0000000004B86000-memory.dmp
    Filesize

    216KB

  • memory/4512-137-0x0000000000000000-mapping.dmp
  • memory/4512-141-0x00000000052B0000-0x00000000058D8000-memory.dmp
    Filesize

    6.2MB

  • memory/4512-150-0x0000000006120000-0x000000000613E000-memory.dmp
    Filesize

    120KB

  • memory/4512-155-0x00000000066A0000-0x00000000066BE000-memory.dmp
    Filesize

    120KB

  • memory/4512-161-0x0000000007760000-0x000000000777A000-memory.dmp
    Filesize

    104KB

  • memory/4512-157-0x0000000007420000-0x000000000743A000-memory.dmp
    Filesize

    104KB

  • memory/4512-158-0x0000000007490000-0x000000000749A000-memory.dmp
    Filesize

    40KB

  • memory/4512-159-0x00000000076A0000-0x0000000007736000-memory.dmp
    Filesize

    600KB

  • memory/4512-160-0x0000000007650000-0x000000000765E000-memory.dmp
    Filesize

    56KB

  • memory/4728-135-0x0000000005020000-0x000000000502A000-memory.dmp
    Filesize

    40KB

  • memory/4728-136-0x0000000008AC0000-0x0000000008B5C000-memory.dmp
    Filesize

    624KB

  • memory/4728-134-0x0000000005090000-0x0000000005122000-memory.dmp
    Filesize

    584KB

  • memory/4728-133-0x00000000055A0000-0x0000000005B44000-memory.dmp
    Filesize

    5.6MB

  • memory/4728-132-0x0000000000570000-0x0000000000678000-memory.dmp
    Filesize

    1.0MB