remcos | 3b3023d6229d36e0aea11b5d720bf9e660a0c50950cafa4c2ba296ac7f062a71

General

Target

IMG002.exe
Size

6KB
MD5

f5aaeef78a7f8aa64923c3186a4e639f
SHA1

cb29af3a814e40a809528f10076152ea2f450651
SHA256

08a87793c7ca10af688ef68cf54f4e5a632bef11145a60c6e48027ca91c386a5
SHA512

c736dfa6f0b0047409de0ae6df0b663b139ffee7a9de1f82d5967bdd1a4d6e84fcb2ec1a528104cf466264ebf91f85ebb70fd9a6368308e49b1b2bbc661de752
SSDEEP

96:sa7pI50pKG1iNNeLdbbDBn225rFy6Ydk2fKtk6RFnU:s2pN1pLdTBn225r0EED

Score

10^/10

remcos remote persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Remote

C2

79.110.62.46:50499

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
windowss
mouse_option
false
mutex
fg4wer4s5trgfqewdc-WR9LLO
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:

IMG002.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation IMG002.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	IMG002.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

IMG002.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dmigcshmlhe = "\"C:\\Users\\Admin\\AppData\\Roaming\\Nzcunpev\\Dmigcshmlhe.exe\""	IMG002.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

IMG002.exe

description pid process target process

PID 1508 set thread context of 4496 1508 IMG002.exe IMG002.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

4304 powershell.exe
4304 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

IMG002.exepowershell.exe

description pid process

Token: SeDebugPrivilege 1508 IMG002.exe
Token: SeDebugPrivilege 4304 powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

IMG002.exe

pid process

4496 IMG002.exe

description	pid	process	target process
PID 1508 set thread context of 4496	1508	IMG002.exe	IMG002.exe

pid	process
4304	powershell.exe
4304	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1508	IMG002.exe
Token: SeDebugPrivilege	4304	powershell.exe

pid	process
4496	IMG002.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

IMG002.exe

description	pid	process	target process
PID 1508 wrote to memory of 4304	1508	IMG002.exe	powershell.exe
PID 1508 wrote to memory of 4304	1508	IMG002.exe	powershell.exe
PID 1508 wrote to memory of 4304	1508	IMG002.exe	powershell.exe
PID 1508 wrote to memory of 4496	1508	IMG002.exe	IMG002.exe
PID 1508 wrote to memory of 4496	1508	IMG002.exe	IMG002.exe
PID 1508 wrote to memory of 4496	1508	IMG002.exe	IMG002.exe
PID 1508 wrote to memory of 4496	1508	IMG002.exe	IMG002.exe
PID 1508 wrote to memory of 4496	1508	IMG002.exe	IMG002.exe
PID 1508 wrote to memory of 4496	1508	IMG002.exe	IMG002.exe
PID 1508 wrote to memory of 4496	1508	IMG002.exe	IMG002.exe
PID 1508 wrote to memory of 4496	1508	IMG002.exe	IMG002.exe
PID 1508 wrote to memory of 4496	1508	IMG002.exe	IMG002.exe
PID 1508 wrote to memory of 4496	1508	IMG002.exe	IMG002.exe
PID 1508 wrote to memory of 4496	1508	IMG002.exe	IMG002.exe
PID 1508 wrote to memory of 4496	1508	IMG002.exe	IMG002.exe

C:\Users\Admin\AppData\Local\Temp\IMG002.exe
"C:\Users\Admin\AppData\Local\Temp\IMG002.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:1508

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4304

C:\Users\Admin\AppData\Local\Temp\IMG002.exe
C:\Users\Admin\AppData\Local\Temp\IMG002.exe
2⤵
- Suspicious use of SetWindowsHookEx
PID:4496

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/1508-132-0x0000000000B10000-0x0000000000B18000-memory.dmp

Filesize
32KB

Download
memory/1508-133-0x0000000006180000-0x0000000006212000-memory.dmp

Filesize
584KB

Download
memory/1508-134-0x00000000067D0000-0x0000000006D74000-memory.dmp

Filesize
5.6MB

Download
memory/1508-135-0x0000000006250000-0x0000000006272000-memory.dmp

Filesize
136KB

Download
memory/4304-136-0x0000000000000000-mapping.dmp

Download
memory/4304-137-0x0000000002240000-0x0000000002276000-memory.dmp

Filesize
216KB

Download
memory/4304-138-0x0000000004E30000-0x0000000005458000-memory.dmp

Filesize
6.2MB

Download
memory/4304-139-0x0000000004C50000-0x0000000004CB6000-memory.dmp

Filesize
408KB

Download
memory/4304-140-0x0000000005460000-0x00000000054C6000-memory.dmp

Filesize
408KB

Download
memory/4304-141-0x0000000005B70000-0x0000000005B8E000-memory.dmp

Filesize
120KB

Download
memory/4304-142-0x0000000007260000-0x00000000078DA000-memory.dmp

Filesize
6.5MB

Download
memory/4304-143-0x0000000006100000-0x000000000611A000-memory.dmp

Filesize
104KB

Download
memory/4496-144-0x0000000000000000-mapping.dmp

Download
memory/4496-145-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4496-146-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4496-147-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4496-148-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4496-149-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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