remcos | 73c4025ffeef1f6c767da566746473c99b0dd93b1a2e1f7d1d5c8b31d29f08f2

General

Target

d53d34f175739008176bb98aa1cfd41c.exe
Size

998KB
MD5

d53d34f175739008176bb98aa1cfd41c
SHA1

2b7244d307b7fe8209bc6874bfb2d11d24886ff8
SHA256

73c4025ffeef1f6c767da566746473c99b0dd93b1a2e1f7d1d5c8b31d29f08f2
SHA512

f6922380d752a656d10065c5b18a1b1c0703ae906ead4b1ac2dc0606eb448b1cbe115b73c79af41848076e7ab03a5dffff5f64a923c346ec799a52110bfff017
SSDEEP

24576:bxeqH+YCtYG6/fXIOC0soC5Qyct5hTxgLeoY93tnvYIEUimX:bxeqH+TenXIOPyc3vgLjY9ZvYI

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
Executes dropped EXE 2 IoCs

Processes:

oos.exeoos.exe

pid process

1352 oos.exe
1436 oos.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1564 cmd.exe

pid	process
1352	oos.exe
1436	oos.exe

pid	process
1564	cmd.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

d53d34f175739008176bb98aa1cfd41c.exeoos.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\""	d53d34f175739008176bb98aa1cfd41c.exe
Key created	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Windows\CurrentVersion\Run\	oos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\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-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Windows\CurrentVersion\Run\	d53d34f175739008176bb98aa1cfd41c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\""	d53d34f175739008176bb98aa1cfd41c.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\	d53d34f175739008176bb98aa1cfd41c.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

d53d34f175739008176bb98aa1cfd41c.exeoos.exe

description	pid	process	target process
PID 1308 set thread context of 268	1308	d53d34f175739008176bb98aa1cfd41c.exe	d53d34f175739008176bb98aa1cfd41c.exe
PID 1352 set thread context of 1436	1352	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
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

oos.exe

pid process

1436 oos.exe

pid	process
1436	oos.exe

Suspicious use of WriteProcessMemory 38 IoCs

Processes:

d53d34f175739008176bb98aa1cfd41c.exed53d34f175739008176bb98aa1cfd41c.exeWScript.execmd.exeoos.exe

description	pid	process	target process
PID 1308 wrote to memory of 268	1308	d53d34f175739008176bb98aa1cfd41c.exe	d53d34f175739008176bb98aa1cfd41c.exe
PID 1308 wrote to memory of 268	1308	d53d34f175739008176bb98aa1cfd41c.exe	d53d34f175739008176bb98aa1cfd41c.exe
PID 1308 wrote to memory of 268	1308	d53d34f175739008176bb98aa1cfd41c.exe	d53d34f175739008176bb98aa1cfd41c.exe
PID 1308 wrote to memory of 268	1308	d53d34f175739008176bb98aa1cfd41c.exe	d53d34f175739008176bb98aa1cfd41c.exe
PID 1308 wrote to memory of 268	1308	d53d34f175739008176bb98aa1cfd41c.exe	d53d34f175739008176bb98aa1cfd41c.exe
PID 1308 wrote to memory of 268	1308	d53d34f175739008176bb98aa1cfd41c.exe	d53d34f175739008176bb98aa1cfd41c.exe
PID 1308 wrote to memory of 268	1308	d53d34f175739008176bb98aa1cfd41c.exe	d53d34f175739008176bb98aa1cfd41c.exe
PID 1308 wrote to memory of 268	1308	d53d34f175739008176bb98aa1cfd41c.exe	d53d34f175739008176bb98aa1cfd41c.exe
PID 1308 wrote to memory of 268	1308	d53d34f175739008176bb98aa1cfd41c.exe	d53d34f175739008176bb98aa1cfd41c.exe
PID 1308 wrote to memory of 268	1308	d53d34f175739008176bb98aa1cfd41c.exe	d53d34f175739008176bb98aa1cfd41c.exe
PID 1308 wrote to memory of 268	1308	d53d34f175739008176bb98aa1cfd41c.exe	d53d34f175739008176bb98aa1cfd41c.exe
PID 1308 wrote to memory of 268	1308	d53d34f175739008176bb98aa1cfd41c.exe	d53d34f175739008176bb98aa1cfd41c.exe
PID 1308 wrote to memory of 268	1308	d53d34f175739008176bb98aa1cfd41c.exe	d53d34f175739008176bb98aa1cfd41c.exe
PID 268 wrote to memory of 284	268	d53d34f175739008176bb98aa1cfd41c.exe	WScript.exe
PID 268 wrote to memory of 284	268	d53d34f175739008176bb98aa1cfd41c.exe	WScript.exe
PID 268 wrote to memory of 284	268	d53d34f175739008176bb98aa1cfd41c.exe	WScript.exe
PID 268 wrote to memory of 284	268	d53d34f175739008176bb98aa1cfd41c.exe	WScript.exe
PID 284 wrote to memory of 1564	284	WScript.exe	cmd.exe
PID 284 wrote to memory of 1564	284	WScript.exe	cmd.exe
PID 284 wrote to memory of 1564	284	WScript.exe	cmd.exe
PID 284 wrote to memory of 1564	284	WScript.exe	cmd.exe
PID 1564 wrote to memory of 1352	1564	cmd.exe	oos.exe
PID 1564 wrote to memory of 1352	1564	cmd.exe	oos.exe
PID 1564 wrote to memory of 1352	1564	cmd.exe	oos.exe
PID 1564 wrote to memory of 1352	1564	cmd.exe	oos.exe
PID 1352 wrote to memory of 1436	1352	oos.exe	oos.exe
PID 1352 wrote to memory of 1436	1352	oos.exe	oos.exe
PID 1352 wrote to memory of 1436	1352	oos.exe	oos.exe
PID 1352 wrote to memory of 1436	1352	oos.exe	oos.exe
PID 1352 wrote to memory of 1436	1352	oos.exe	oos.exe
PID 1352 wrote to memory of 1436	1352	oos.exe	oos.exe
PID 1352 wrote to memory of 1436	1352	oos.exe	oos.exe
PID 1352 wrote to memory of 1436	1352	oos.exe	oos.exe
PID 1352 wrote to memory of 1436	1352	oos.exe	oos.exe
PID 1352 wrote to memory of 1436	1352	oos.exe	oos.exe
PID 1352 wrote to memory of 1436	1352	oos.exe	oos.exe
PID 1352 wrote to memory of 1436	1352	oos.exe	oos.exe
PID 1352 wrote to memory of 1436	1352	oos.exe	oos.exe

C:\Users\Admin\AppData\Local\Temp\d53d34f175739008176bb98aa1cfd41c.exe
"C:\Users\Admin\AppData\Local\Temp\d53d34f175739008176bb98aa1cfd41c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1308

C:\Users\Admin\AppData\Local\Temp\d53d34f175739008176bb98aa1cfd41c.exe
"C:\Users\Admin\AppData\Local\Temp\d53d34f175739008176bb98aa1cfd41c.exe"
2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:268

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:284

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\oos.exe"
4⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1564

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:1352

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:1436

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

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

MD5
044686bf67ad23513fcc06389ff0d478

SHA1
75008f420420cf3eba3321e1d5d03832333b4501

SHA256
9e04cce33b61eae88adcc84ebf0a37194d9856259fc5e4acc5c7387b3629988d

SHA512
102b7804209972f6f1921cee0f04e4813986009aaa42e5ce69fa8617c2a584ea8a0afc0c7554f79f92b1c0d02ae6532f7d4d67284b6813182487d36eff05272d

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
998KB

MD5
d53d34f175739008176bb98aa1cfd41c

SHA1
2b7244d307b7fe8209bc6874bfb2d11d24886ff8

SHA256
73c4025ffeef1f6c767da566746473c99b0dd93b1a2e1f7d1d5c8b31d29f08f2

SHA512
f6922380d752a656d10065c5b18a1b1c0703ae906ead4b1ac2dc0606eb448b1cbe115b73c79af41848076e7ab03a5dffff5f64a923c346ec799a52110bfff017

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
998KB

MD5
d53d34f175739008176bb98aa1cfd41c

SHA1
2b7244d307b7fe8209bc6874bfb2d11d24886ff8

SHA256
73c4025ffeef1f6c767da566746473c99b0dd93b1a2e1f7d1d5c8b31d29f08f2

SHA512
f6922380d752a656d10065c5b18a1b1c0703ae906ead4b1ac2dc0606eb448b1cbe115b73c79af41848076e7ab03a5dffff5f64a923c346ec799a52110bfff017

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
998KB

MD5
d53d34f175739008176bb98aa1cfd41c

SHA1
2b7244d307b7fe8209bc6874bfb2d11d24886ff8

SHA256
73c4025ffeef1f6c767da566746473c99b0dd93b1a2e1f7d1d5c8b31d29f08f2

SHA512
f6922380d752a656d10065c5b18a1b1c0703ae906ead4b1ac2dc0606eb448b1cbe115b73c79af41848076e7ab03a5dffff5f64a923c346ec799a52110bfff017

Download Submit
\Users\Admin\AppData\Roaming\oos.exe
Filesize
998KB

MD5
d53d34f175739008176bb98aa1cfd41c

SHA1
2b7244d307b7fe8209bc6874bfb2d11d24886ff8

SHA256
73c4025ffeef1f6c767da566746473c99b0dd93b1a2e1f7d1d5c8b31d29f08f2

SHA512
f6922380d752a656d10065c5b18a1b1c0703ae906ead4b1ac2dc0606eb448b1cbe115b73c79af41848076e7ab03a5dffff5f64a923c346ec799a52110bfff017

Download Submit
memory/268-64-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/268-69-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/268-62-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/268-63-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/268-61-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/268-65-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/268-66-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/268-67-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/268-68-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/268-78-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/268-70-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/268-72-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1308-56-0x0000000000380000-0x000000000038E000-memory.dmp

Filesize
56KB

Download
memory/1308-60-0x0000000006050000-0x00000000060CE000-memory.dmp

Filesize
504KB

Download
memory/1308-59-0x00000000058B0000-0x000000000596E000-memory.dmp

Filesize
760KB

Download
memory/1308-58-0x00000000003D0000-0x00000000003DC000-memory.dmp

Filesize
48KB

Download
memory/1308-57-0x00000000044D0000-0x0000000004510000-memory.dmp

Filesize
256KB

Download
memory/1308-54-0x0000000000DC0000-0x0000000000EC0000-memory.dmp

Filesize
1024KB

Download
memory/1308-55-0x00000000044D0000-0x0000000004510000-memory.dmp

Filesize
256KB

Download
memory/1352-83-0x0000000001310000-0x0000000001410000-memory.dmp

Filesize
1024KB

Download
memory/1352-84-0x00000000051B0000-0x00000000051F0000-memory.dmp

Filesize
256KB

Download
memory/1352-85-0x00000000051B0000-0x00000000051F0000-memory.dmp

Filesize
256KB

Download
memory/1436-103-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1436-99-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1436-102-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1436-101-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1436-94-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1436-104-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1436-108-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1436-110-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1436-111-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1436-98-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1436-116-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1436-117-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads