remcos | c99b050645ebbc138018a9dcb4c3029bc1a9aa9376e7541c1011e815942948e1

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

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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

remcos remotehost rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

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.
rat remcos

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	DHL SHIPPING DOC PDF.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4728 set thread context of 3852	4728	DHL SHIPPING DOC PDF.exe	91

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
224	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4728	DHL SHIPPING DOC PDF.exe
4728	DHL SHIPPING DOC PDF.exe
4728	DHL SHIPPING DOC PDF.exe
4728	DHL SHIPPING DOC PDF.exe
4728	DHL SHIPPING DOC PDF.exe
4728	DHL SHIPPING DOC PDF.exe
4512	powershell.exe
32	powershell.exe
4512	powershell.exe
4728	DHL SHIPPING DOC PDF.exe
32	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4728	DHL SHIPPING DOC PDF.exe
Token: SeDebugPrivilege	32	powershell.exe
Token: SeDebugPrivilege	4512	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3852	DHL SHIPPING DOC PDF.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4728 wrote to memory of 4512	4728	DHL SHIPPING DOC PDF.exe	85
PID 4728 wrote to memory of 4512	4728	DHL SHIPPING DOC PDF.exe	85
PID 4728 wrote to memory of 4512	4728	DHL SHIPPING DOC PDF.exe	85
PID 4728 wrote to memory of 32	4728	DHL SHIPPING DOC PDF.exe	87
PID 4728 wrote to memory of 32	4728	DHL SHIPPING DOC PDF.exe	87
PID 4728 wrote to memory of 32	4728	DHL SHIPPING DOC PDF.exe	87
PID 4728 wrote to memory of 224	4728	DHL SHIPPING DOC PDF.exe	89
PID 4728 wrote to memory of 224	4728	DHL SHIPPING DOC PDF.exe	89
PID 4728 wrote to memory of 224	4728	DHL SHIPPING DOC PDF.exe	89
PID 4728 wrote to memory of 3852	4728	DHL SHIPPING DOC PDF.exe	91
PID 4728 wrote to memory of 3852	4728	DHL SHIPPING DOC PDF.exe	91
PID 4728 wrote to memory of 3852	4728	DHL SHIPPING DOC PDF.exe	91
PID 4728 wrote to memory of 3852	4728	DHL SHIPPING DOC PDF.exe	91
PID 4728 wrote to memory of 3852	4728	DHL SHIPPING DOC PDF.exe	91
PID 4728 wrote to memory of 3852	4728	DHL SHIPPING DOC PDF.exe	91
PID 4728 wrote to memory of 3852	4728	DHL SHIPPING DOC PDF.exe	91
PID 4728 wrote to memory of 3852	4728	DHL SHIPPING DOC PDF.exe	91
PID 4728 wrote to memory of 3852	4728	DHL SHIPPING DOC PDF.exe	91
PID 4728 wrote to memory of 3852	4728	DHL SHIPPING DOC PDF.exe	91
PID 4728 wrote to memory of 3852	4728	DHL SHIPPING DOC PDF.exe	91
PID 4728 wrote to memory of 3852	4728	DHL SHIPPING DOC PDF.exe	91

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 Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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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

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
18KB

MD5
5cf19b4d3831c3c89ae34ed4ef07b1a0

SHA1
2f09ae87a2cc02cc526af39a3f83f52ac5baef3c

SHA256
5a4a22498e4d2a0846fb192eac8fbebfaad0cd1c0b608ee33cbd34d18eb4626b

SHA512
adeadfd825c9780cf3ec03062a2a14bb14c71491291f155c19b783508baaba0bc75244cf691ac1c691504b81ba68d594aa43caf7386b001e9ba45106053d0f89

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp350A.tmp

Filesize
1KB

MD5
b74a0634dff566a8234f497c4d9bf210

SHA1
9a76558f96edc86644bda6277fa9ff55240803bb

SHA256
eda0ad5ad9766fc38ff94d0bd3bcb5e9f40b3bd8f6206e89dee78682a523ab63

SHA512
2fe44a9756121dab63228af91bd22b6ceab33e621e56198d01f232c6e9043af634c7f1620ef22d0328f49fd7c1ae05cf04995e6d2553e93f9df78860b4fb84d7

Download Submit
memory/32-142-0x00000000050E0000-0x0000000005102000-memory.dmp

Filesize
136KB

Download
memory/32-156-0x0000000007B10000-0x000000000818A000-memory.dmp

Filesize
6.5MB

Download
memory/32-154-0x0000000073310000-0x000000007335C000-memory.dmp

Filesize
304KB

Download
memory/32-152-0x0000000006790000-0x00000000067C2000-memory.dmp

Filesize
200KB

Download
memory/32-144-0x0000000005B80000-0x0000000005BE6000-memory.dmp

Filesize
408KB

Download
memory/32-143-0x0000000005960000-0x00000000059C6000-memory.dmp

Filesize
408KB

Download
memory/3852-149-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3852-165-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3852-151-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3852-147-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3852-148-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4512-153-0x0000000073310000-0x000000007335C000-memory.dmp

Filesize
304KB

Download
memory/4512-162-0x0000000007740000-0x0000000007748000-memory.dmp

Filesize
32KB

Download
memory/4512-140-0x0000000004B50000-0x0000000004B86000-memory.dmp

Filesize
216KB

Download
memory/4512-141-0x00000000052B0000-0x00000000058D8000-memory.dmp

Filesize
6.2MB

Download
memory/4512-150-0x0000000006120000-0x000000000613E000-memory.dmp

Filesize
120KB

Download
memory/4512-155-0x00000000066A0000-0x00000000066BE000-memory.dmp

Filesize
120KB

Download
memory/4512-161-0x0000000007760000-0x000000000777A000-memory.dmp

Filesize
104KB

Download
memory/4512-157-0x0000000007420000-0x000000000743A000-memory.dmp

Filesize
104KB

Download
memory/4512-158-0x0000000007490000-0x000000000749A000-memory.dmp

Filesize
40KB

Download
memory/4512-159-0x00000000076A0000-0x0000000007736000-memory.dmp

Filesize
600KB

Download
memory/4512-160-0x0000000007650000-0x000000000765E000-memory.dmp

Filesize
56KB

Download
memory/4728-135-0x0000000005020000-0x000000000502A000-memory.dmp

Filesize
40KB

Download
memory/4728-136-0x0000000008AC0000-0x0000000008B5C000-memory.dmp

Filesize
624KB

Download
memory/4728-134-0x0000000005090000-0x0000000005122000-memory.dmp

Filesize
584KB

Download
memory/4728-133-0x00000000055A0000-0x0000000005B44000-memory.dmp

Filesize
5.6MB

Download
memory/4728-132-0x0000000000570000-0x0000000000678000-memory.dmp

Filesize
1.0MB

Download