remcos | 03541b2cf3bf022eda584b9ead6b6edeb7a47e8ccaa99b2415ee56694c9868cb

Analysis

max time kernel
150s
max time network
152s
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 15:19

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General

Target

tmp.exe
Size

2.7MB
MD5

21605edd439a91f69b7c2584413ae3f5
SHA1

76353ff45df865cee24b8802c2332c8f07590df6
SHA256

03541b2cf3bf022eda584b9ead6b6edeb7a47e8ccaa99b2415ee56694c9868cb
SHA512

df4248687d7a92389a3aab90dd0ccc8ea7236e8b71555bd835c33816a6e27b9a147d10fe693b57a693698c0d7c3fdbd99a3587cbfba08929c0d0fc4f34efb128
SSDEEP

49152:Q61jlIn2e7zgWTSOa7Q4hVBP35NxVg1DHeTz0CTssEORTdQRYdN+1rHzE42i9:Q6FynB7JTSOWBBNxVg1zen0CLEOhdQTl

Score

10^/10

remcos nigeria rat

Malware Config

Extracted

Family

remcos

Botnet

nigeria

198.46.173.141:50482

198.46.173.141:50484

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-6CYNGG
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	tmp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1716 set thread context of 5048	1716	tmp.exe	85

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4984	powershell.exe
4984	powershell.exe
1716	tmp.exe
1716	tmp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1716	tmp.exe
Token: SeDebugPrivilege	4984	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5048	tmp.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1716 wrote to memory of 4984	1716	tmp.exe	82
PID 1716 wrote to memory of 4984	1716	tmp.exe	82
PID 1716 wrote to memory of 4984	1716	tmp.exe	82
PID 1716 wrote to memory of 4660	1716	tmp.exe	84
PID 1716 wrote to memory of 4660	1716	tmp.exe	84
PID 1716 wrote to memory of 4660	1716	tmp.exe	84
PID 1716 wrote to memory of 5048	1716	tmp.exe	85
PID 1716 wrote to memory of 5048	1716	tmp.exe	85
PID 1716 wrote to memory of 5048	1716	tmp.exe	85
PID 1716 wrote to memory of 5048	1716	tmp.exe	85
PID 1716 wrote to memory of 5048	1716	tmp.exe	85
PID 1716 wrote to memory of 5048	1716	tmp.exe	85
PID 1716 wrote to memory of 5048	1716	tmp.exe	85
PID 1716 wrote to memory of 5048	1716	tmp.exe	85
PID 1716 wrote to memory of 5048	1716	tmp.exe	85
PID 1716 wrote to memory of 5048	1716	tmp.exe	85
PID 1716 wrote to memory of 5048	1716	tmp.exe	85
PID 1716 wrote to memory of 5048	1716	tmp.exe	85

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1716
- 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:4984
- C:\Users\Admin\AppData\Local\Temp\tmp.exe
  C:\Users\Admin\AppData\Local\Temp\tmp.exe
  2⤵
  PID:4660
- C:\Users\Admin\AppData\Local\Temp\tmp.exe
  C:\Users\Admin\AppData\Local\Temp\tmp.exe
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:5048

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1716-132-0x0000000000E20000-0x00000000010D2000-memory.dmp

Filesize
2.7MB

Download
memory/1716-133-0x0000000005EB0000-0x0000000005ED2000-memory.dmp

Filesize
136KB

Download
memory/4984-140-0x0000000007360000-0x00000000079DA000-memory.dmp

Filesize
6.5MB

Download
memory/4984-137-0x0000000004DF0000-0x0000000004E56000-memory.dmp

Filesize
408KB

Download
memory/4984-138-0x0000000005490000-0x00000000054F6000-memory.dmp

Filesize
408KB

Download
memory/4984-139-0x0000000005B10000-0x0000000005B2E000-memory.dmp

Filesize
120KB

Download
memory/4984-135-0x0000000002220000-0x0000000002256000-memory.dmp

Filesize
216KB

Download
memory/4984-141-0x0000000006010000-0x000000000602A000-memory.dmp

Filesize
104KB

Download
memory/4984-136-0x0000000004E60000-0x0000000005488000-memory.dmp

Filesize
6.2MB

Download
memory/5048-144-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/5048-145-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/5048-146-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/5048-147-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download
memory/5048-148-0x0000000000400000-0x0000000000480000-memory.dmp

Filesize
512KB

Download