remcos | 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580

General

Target

6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
Size

1020KB
MD5

3d87e610c1e0855bac84e1a66632afd5
SHA1

998433cdb154c12a50aac7fd3f174bb2da931496
SHA256

6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580
SHA512

e8e091be06cd3c16b84b36b219b5a3980dd529f78c591a35d75c18b2bdd9d811cf978a893cfee47568a74139579266330de04714e2c9f5473824d20a3cc8a21d
SSDEEP

24576:fkkU1nC/RckNg7iDLB/a18rYgaJvw4HTGFmF:fk3C/RckuODL1EgaZwCTV

Score

10^/10

remcos xp persistence rat

Malware Config

Extracted

Family

remcos

Botnet

XP

C2

xpremcuz300622.ddns.net:3542

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
oos.exe
delete_file
false
hide_file
true
hide_keylog_file
false
install_flag
true
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Remcos-MMP2I7
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
kkl
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 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

WScript.exe6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe

Executes dropped EXE 2 IoCs

Processes:

oos.exeoos.exe

pid process

3792 oos.exe
1028 oos.exe

pid	process
3792	oos.exe
1028	oos.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exeoos.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\""	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Windows\CurrentVersion\Run\	oos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\""	oos.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	oos.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\""	oos.exe
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Windows\CurrentVersion\Run\	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\""	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exeoos.exe

description	pid	process	target process
PID 4480 set thread context of 4868	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 3792 set thread context of 1028	3792	oos.exe	oos.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000_Classes\Local Settings	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe

pid	process
4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe

description pid process

Token: SeDebugPrivilege 4480 6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

oos.exe

pid process

1028 oos.exe

description	pid	process
Token: SeDebugPrivilege	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe

pid	process
1028	oos.exe

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exeWScript.execmd.exeoos.exe

description	pid	process	target process
PID 4480 wrote to memory of 3928	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 3928	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 3928	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 728	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 728	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 728	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 4868	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 4868	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 4868	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 4868	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 4868	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 4868	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 4868	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 4868	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 4868	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 4868	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 4868	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4480 wrote to memory of 4868	4480	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
PID 4868 wrote to memory of 3388	4868	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	WScript.exe
PID 4868 wrote to memory of 3388	4868	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	WScript.exe
PID 4868 wrote to memory of 3388	4868	6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe	WScript.exe
PID 3388 wrote to memory of 748	3388	WScript.exe	cmd.exe
PID 3388 wrote to memory of 748	3388	WScript.exe	cmd.exe
PID 3388 wrote to memory of 748	3388	WScript.exe	cmd.exe
PID 748 wrote to memory of 3792	748	cmd.exe	oos.exe
PID 748 wrote to memory of 3792	748	cmd.exe	oos.exe
PID 748 wrote to memory of 3792	748	cmd.exe	oos.exe
PID 3792 wrote to memory of 1028	3792	oos.exe	oos.exe
PID 3792 wrote to memory of 1028	3792	oos.exe	oos.exe
PID 3792 wrote to memory of 1028	3792	oos.exe	oos.exe
PID 3792 wrote to memory of 1028	3792	oos.exe	oos.exe
PID 3792 wrote to memory of 1028	3792	oos.exe	oos.exe
PID 3792 wrote to memory of 1028	3792	oos.exe	oos.exe
PID 3792 wrote to memory of 1028	3792	oos.exe	oos.exe
PID 3792 wrote to memory of 1028	3792	oos.exe	oos.exe
PID 3792 wrote to memory of 1028	3792	oos.exe	oos.exe
PID 3792 wrote to memory of 1028	3792	oos.exe	oos.exe
PID 3792 wrote to memory of 1028	3792	oos.exe	oos.exe
PID 3792 wrote to memory of 1028	3792	oos.exe	oos.exe

C:\Users\Admin\AppData\Local\Temp\6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
"C:\Users\Admin\AppData\Local\Temp\6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4480

C:\Users\Admin\AppData\Local\Temp\6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
"C:\Users\Admin\AppData\Local\Temp\6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe"
2⤵
PID:3928

C:\Users\Admin\AppData\Local\Temp\6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
"C:\Users\Admin\AppData\Local\Temp\6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe"
2⤵
PID:728

C:\Users\Admin\AppData\Local\Temp\6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe
"C:\Users\Admin\AppData\Local\Temp\6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4868

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3388

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\oos.exe"
4⤵
- Suspicious use of WriteProcessMemory
PID:748

C:\Users\Admin\AppData\Roaming\oos.exe
C:\Users\Admin\AppData\Roaming\oos.exe
5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3792

C:\Users\Admin\AppData\Roaming\oos.exe
"C:\Users\Admin\AppData\Roaming\oos.exe"
6⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:1028

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

C:\ProgramData\remcos\logs.dat
Filesize
144B

MD5
d04adb5e245db72d6dd5940a09bc55be

SHA1
34e378b37a110e809d313d66e4acc0ce5008f267

SHA256
01659d877442d0484846d29ffc864952c9cefbd0de81120251a7f46b29433bec

SHA512
39a701acdf4227cfc125bf93773ce12bf9cca94f17818bc4981b702a85995e0e0fb03fb2b19d0da7a116c91dc23e987073dd7e2d6aaa4873ee63f0ceeefbd9c6

Download Submit
C:\Users\Admin\AppData\Local\Temp\install.vbs
Filesize
398B

MD5
a5d3440f90cbfae712166e20870eaed7

SHA1
cc1e1a2945eb2ad475234344f7527ad9e9873647

SHA256
960a570da95b8d16809cbcc18e8ca4d81e16cb666354ddc1d572daf93f291f02

SHA512
d3136a280fbb326ccc5cb5ab1214aed8ccd6baa7f3f89ef9e0b5bf391a957dab2c121640bb056e6cbda0594f83133c4dbb4e1e2f0e290b44a401cd2cf8cfd4aa

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
1020KB

MD5
3d87e610c1e0855bac84e1a66632afd5

SHA1
998433cdb154c12a50aac7fd3f174bb2da931496

SHA256
6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580

SHA512
e8e091be06cd3c16b84b36b219b5a3980dd529f78c591a35d75c18b2bdd9d811cf978a893cfee47568a74139579266330de04714e2c9f5473824d20a3cc8a21d

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
1020KB

MD5
3d87e610c1e0855bac84e1a66632afd5

SHA1
998433cdb154c12a50aac7fd3f174bb2da931496

SHA256
6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580

SHA512
e8e091be06cd3c16b84b36b219b5a3980dd529f78c591a35d75c18b2bdd9d811cf978a893cfee47568a74139579266330de04714e2c9f5473824d20a3cc8a21d

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
1020KB

MD5
3d87e610c1e0855bac84e1a66632afd5

SHA1
998433cdb154c12a50aac7fd3f174bb2da931496

SHA256
6f156a6c661f4b68eb1be00e5a1be53fb80f05af516ef4dcdd7d3e937a1db580

SHA512
e8e091be06cd3c16b84b36b219b5a3980dd529f78c591a35d75c18b2bdd9d811cf978a893cfee47568a74139579266330de04714e2c9f5473824d20a3cc8a21d

Download Submit
memory/1028-164-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1028-167-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1028-180-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1028-179-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1028-174-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1028-173-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1028-170-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1028-166-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1028-165-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1028-162-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1028-161-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1028-160-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/3792-155-0x0000000004D70000-0x0000000004D80000-memory.dmp

Filesize
64KB

Download
memory/3792-156-0x0000000004D70000-0x0000000004D80000-memory.dmp

Filesize
64KB

Download
memory/4480-138-0x0000000004C90000-0x0000000004CA0000-memory.dmp

Filesize
64KB

Download
memory/4480-136-0x0000000004CB0000-0x0000000004CBA000-memory.dmp

Filesize
40KB

Download
memory/4480-133-0x00000000001E0000-0x00000000002E4000-memory.dmp

Filesize
1.0MB

Download
memory/4480-137-0x0000000004C90000-0x0000000004CA0000-memory.dmp

Filesize
64KB

Download
memory/4480-135-0x0000000004CE0000-0x0000000004D72000-memory.dmp

Filesize
584KB

Download
memory/4480-139-0x0000000006AA0000-0x0000000006B3C000-memory.dmp

Filesize
624KB

Download
memory/4480-134-0x0000000005290000-0x0000000005834000-memory.dmp

Filesize
5.6MB

Download
memory/4868-150-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/4868-147-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/4868-143-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/4868-142-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/4868-140-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads