remcos | 03b60f45075adb83851032b695e37f3a6b3ac15fbdc7cf05eeca9da7f6d6fcfe

General

Target

shipment.exe
Size

6KB
MD5

f29c78538354b88cf5c132b5135f1821
SHA1

08554577f70e31926184981c11b5f41a3e35fc69
SHA256

03b60f45075adb83851032b695e37f3a6b3ac15fbdc7cf05eeca9da7f6d6fcfe
SHA512

d19fb91647c3e4882a536f35433dfa7c1f4f6fdccf2706f2af8b36782e8f2cd65297737e1fd2d292c2a2da27c58f9505262b4c0780ef955b015cbec1f400a3a8
SSDEEP

96:XQJ06l0bPmTWl5ma6h1vwLM1ow+fYv9mS8xYDxeYZzNt:qVWPmJwLMl4cmSD1b

Score

10^/10

remcos rex persistence rat

Malware Config

Extracted

Family

remcos

Botnet

rex

C2

45.155.165.160:40567

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-2UAJG6
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

Processes:

shipment.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation shipment.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	shipment.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

shipment.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Cmopncfrqp = "\"C:\\Users\\Admin\\AppData\\Roaming\\Xtuojsxhyhy\\Cmopncfrqp.exe\""	shipment.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

shipment.exe

description pid process target process

PID 3480 set thread context of 3296 3480 shipment.exe shipment.exe
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 2 IoCs

Processes:

powershell.exe

pid process

4376 powershell.exe
4376 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

shipment.exepowershell.exe

description pid process

Token: SeDebugPrivilege 3480 shipment.exe
Token: SeDebugPrivilege 4376 powershell.exe

description	pid	process	target process
PID 3480 set thread context of 3296	3480	shipment.exe	shipment.exe

pid	process
4376	powershell.exe
4376	powershell.exe

description	pid	process
Token: SeDebugPrivilege	3480	shipment.exe
Token: SeDebugPrivilege	4376	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

shipment.exe

description	pid	process	target process
PID 3480 wrote to memory of 4376	3480	shipment.exe	powershell.exe
PID 3480 wrote to memory of 4376	3480	shipment.exe	powershell.exe
PID 3480 wrote to memory of 4376	3480	shipment.exe	powershell.exe
PID 3480 wrote to memory of 3296	3480	shipment.exe	shipment.exe
PID 3480 wrote to memory of 3296	3480	shipment.exe	shipment.exe
PID 3480 wrote to memory of 3296	3480	shipment.exe	shipment.exe
PID 3480 wrote to memory of 3296	3480	shipment.exe	shipment.exe
PID 3480 wrote to memory of 3296	3480	shipment.exe	shipment.exe
PID 3480 wrote to memory of 3296	3480	shipment.exe	shipment.exe
PID 3480 wrote to memory of 3296	3480	shipment.exe	shipment.exe
PID 3480 wrote to memory of 3296	3480	shipment.exe	shipment.exe
PID 3480 wrote to memory of 3296	3480	shipment.exe	shipment.exe
PID 3480 wrote to memory of 3296	3480	shipment.exe	shipment.exe
PID 3480 wrote to memory of 3296	3480	shipment.exe	shipment.exe
PID 3480 wrote to memory of 3296	3480	shipment.exe	shipment.exe

C:\Users\Admin\AppData\Local\Temp\shipment.exe
"C:\Users\Admin\AppData\Local\Temp\shipment.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3480

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANwAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4376

C:\Users\Admin\AppData\Local\Temp\shipment.exe
C:\Users\Admin\AppData\Local\Temp\shipment.exe
2⤵
PID:3296

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/3296-149-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3296-148-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3296-147-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3296-146-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3296-145-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/3296-144-0x0000000000000000-mapping.dmp

Download
memory/3480-142-0x0000000005C00000-0x0000000005C92000-memory.dmp

Filesize
584KB

Download
memory/3480-133-0x0000000005E60000-0x0000000005E82000-memory.dmp

Filesize
136KB

Download
memory/3480-132-0x0000000000550000-0x0000000000558000-memory.dmp

Filesize
32KB

Download
memory/3480-143-0x00000000333B0000-0x0000000033954000-memory.dmp

Filesize
5.6MB

Download
memory/4376-136-0x00000000055D0000-0x0000000005BF8000-memory.dmp

Filesize
6.2MB

Download
memory/4376-141-0x0000000006790000-0x00000000067AA000-memory.dmp

Filesize
104KB

Download
memory/4376-140-0x00000000078D0000-0x0000000007F4A000-memory.dmp

Filesize
6.5MB

Download
memory/4376-139-0x00000000062B0000-0x00000000062CE000-memory.dmp

Filesize
120KB

Download
memory/4376-138-0x0000000005CB0000-0x0000000005D16000-memory.dmp

Filesize
408KB

Download
memory/4376-137-0x00000000054C0000-0x0000000005526000-memory.dmp

Filesize
408KB

Download
memory/4376-135-0x0000000002CC0000-0x0000000002CF6000-memory.dmp

Filesize
216KB

Download
memory/4376-134-0x0000000000000000-mapping.dmp

Download

Analysis

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