remcos | 42aa64afaf836bf9a44554d469c52d65cb987edfbe66300cd92663d8f31a188c

General

Target

SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
Size

1.3MB
MD5

11f7f0b849c355b95c7b127880ecf903
SHA1

ceae025a4bf73868f960fde6171595fcef86a8f7
SHA256

42aa64afaf836bf9a44554d469c52d65cb987edfbe66300cd92663d8f31a188c
SHA512

215c423e5ae52ab43d30442f5ca80eec8d76a02db9c9556805277825f8c9004d7a379f588a89e826bf4d8e1630dc6590922e17c0d940484ed388e7d5fb27156e
SSDEEP

24576:7fLWywQrYnpHJgvs6uQOxKsMJK/ArsF6C87wau9Iibt/DxX2ZyrzTzL7:7fLjjrY/Y/KIIX87wau9Tbt/8yHT

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

428 oos.exe
1508 oos.exe
Loads dropped DLL 2 IoCs

Processes:

cmd.exe

pid process

1816 cmd.exe
1816 cmd.exe

pid	process
428	oos.exe
1508	oos.exe

pid	process
1816	cmd.exe
1816	cmd.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

oos.exeSecuriteInfo.com.Troj.MSIL-SSP.21940.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\""	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\""	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\	oos.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

SecuriteInfo.com.Troj.MSIL-SSP.21940.exeoos.exe

description	pid	process	target process
PID 828 set thread context of 1304	828	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
PID 428 set thread context of 1508	428	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

1508 oos.exe

pid	process
1508	oos.exe

Suspicious use of WriteProcessMemory 38 IoCs

Processes:

SecuriteInfo.com.Troj.MSIL-SSP.21940.exeSecuriteInfo.com.Troj.MSIL-SSP.21940.exeWScript.execmd.exeoos.exe

description	pid	process	target process
PID 828 wrote to memory of 1304	828	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
PID 828 wrote to memory of 1304	828	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
PID 828 wrote to memory of 1304	828	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
PID 828 wrote to memory of 1304	828	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
PID 828 wrote to memory of 1304	828	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
PID 828 wrote to memory of 1304	828	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
PID 828 wrote to memory of 1304	828	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
PID 828 wrote to memory of 1304	828	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
PID 828 wrote to memory of 1304	828	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
PID 828 wrote to memory of 1304	828	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
PID 828 wrote to memory of 1304	828	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
PID 828 wrote to memory of 1304	828	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
PID 828 wrote to memory of 1304	828	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
PID 1304 wrote to memory of 1784	1304	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	WScript.exe
PID 1304 wrote to memory of 1784	1304	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	WScript.exe
PID 1304 wrote to memory of 1784	1304	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	WScript.exe
PID 1304 wrote to memory of 1784	1304	SecuriteInfo.com.Troj.MSIL-SSP.21940.exe	WScript.exe
PID 1784 wrote to memory of 1816	1784	WScript.exe	cmd.exe
PID 1784 wrote to memory of 1816	1784	WScript.exe	cmd.exe
PID 1784 wrote to memory of 1816	1784	WScript.exe	cmd.exe
PID 1784 wrote to memory of 1816	1784	WScript.exe	cmd.exe
PID 1816 wrote to memory of 428	1816	cmd.exe	oos.exe
PID 1816 wrote to memory of 428	1816	cmd.exe	oos.exe
PID 1816 wrote to memory of 428	1816	cmd.exe	oos.exe
PID 1816 wrote to memory of 428	1816	cmd.exe	oos.exe
PID 428 wrote to memory of 1508	428	oos.exe	oos.exe
PID 428 wrote to memory of 1508	428	oos.exe	oos.exe
PID 428 wrote to memory of 1508	428	oos.exe	oos.exe
PID 428 wrote to memory of 1508	428	oos.exe	oos.exe
PID 428 wrote to memory of 1508	428	oos.exe	oos.exe
PID 428 wrote to memory of 1508	428	oos.exe	oos.exe
PID 428 wrote to memory of 1508	428	oos.exe	oos.exe
PID 428 wrote to memory of 1508	428	oos.exe	oos.exe
PID 428 wrote to memory of 1508	428	oos.exe	oos.exe
PID 428 wrote to memory of 1508	428	oos.exe	oos.exe
PID 428 wrote to memory of 1508	428	oos.exe	oos.exe
PID 428 wrote to memory of 1508	428	oos.exe	oos.exe
PID 428 wrote to memory of 1508	428	oos.exe	oos.exe

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Troj.MSIL-SSP.21940.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:828

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Troj.MSIL-SSP.21940.exe
"{path}"
2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1304

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:1784

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:1816

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:428

C:\Users\Admin\AppData\Roaming\oos.exe
"{path}"
6⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:1508

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:\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
1.3MB

MD5
11f7f0b849c355b95c7b127880ecf903

SHA1
ceae025a4bf73868f960fde6171595fcef86a8f7

SHA256
42aa64afaf836bf9a44554d469c52d65cb987edfbe66300cd92663d8f31a188c

SHA512
215c423e5ae52ab43d30442f5ca80eec8d76a02db9c9556805277825f8c9004d7a379f588a89e826bf4d8e1630dc6590922e17c0d940484ed388e7d5fb27156e

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
1.3MB

MD5
11f7f0b849c355b95c7b127880ecf903

SHA1
ceae025a4bf73868f960fde6171595fcef86a8f7

SHA256
42aa64afaf836bf9a44554d469c52d65cb987edfbe66300cd92663d8f31a188c

SHA512
215c423e5ae52ab43d30442f5ca80eec8d76a02db9c9556805277825f8c9004d7a379f588a89e826bf4d8e1630dc6590922e17c0d940484ed388e7d5fb27156e

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
1.3MB

MD5
11f7f0b849c355b95c7b127880ecf903

SHA1
ceae025a4bf73868f960fde6171595fcef86a8f7

SHA256
42aa64afaf836bf9a44554d469c52d65cb987edfbe66300cd92663d8f31a188c

SHA512
215c423e5ae52ab43d30442f5ca80eec8d76a02db9c9556805277825f8c9004d7a379f588a89e826bf4d8e1630dc6590922e17c0d940484ed388e7d5fb27156e

Download Submit
\Users\Admin\AppData\Roaming\oos.exe
Filesize
1.3MB

MD5
11f7f0b849c355b95c7b127880ecf903

SHA1
ceae025a4bf73868f960fde6171595fcef86a8f7

SHA256
42aa64afaf836bf9a44554d469c52d65cb987edfbe66300cd92663d8f31a188c

SHA512
215c423e5ae52ab43d30442f5ca80eec8d76a02db9c9556805277825f8c9004d7a379f588a89e826bf4d8e1630dc6590922e17c0d940484ed388e7d5fb27156e

Download Submit
\Users\Admin\AppData\Roaming\oos.exe
Filesize
1.3MB

MD5
11f7f0b849c355b95c7b127880ecf903

SHA1
ceae025a4bf73868f960fde6171595fcef86a8f7

SHA256
42aa64afaf836bf9a44554d469c52d65cb987edfbe66300cd92663d8f31a188c

SHA512
215c423e5ae52ab43d30442f5ca80eec8d76a02db9c9556805277825f8c9004d7a379f588a89e826bf4d8e1630dc6590922e17c0d940484ed388e7d5fb27156e

Download Submit
memory/428-88-0x0000000000480000-0x0000000000492000-memory.dmp

Filesize
72KB

Download
memory/428-86-0x0000000000150000-0x00000000002A0000-memory.dmp

Filesize
1.3MB

Download
memory/428-84-0x0000000000000000-mapping.dmp

Download
memory/828-54-0x0000000000EF0000-0x0000000001040000-memory.dmp

Filesize
1.3MB

Download
memory/828-58-0x000000000AA70000-0x000000000AB28000-memory.dmp

Filesize
736KB

Download
memory/828-57-0x0000000008240000-0x000000000833C000-memory.dmp

Filesize
1008KB

Download
memory/828-56-0x00000000004A0000-0x00000000004B2000-memory.dmp

Filesize
72KB

Download
memory/828-55-0x0000000075A11000-0x0000000075A13000-memory.dmp

Filesize
8KB

Download
memory/1304-66-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1304-60-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1304-59-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1304-77-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1304-72-0x000000000043168C-mapping.dmp

Download
memory/1304-75-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1304-71-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1304-69-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1304-64-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1304-67-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1304-65-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1304-62-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1508-102-0x000000000043168C-mapping.dmp

Download
memory/1508-106-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1508-107-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1508-108-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1784-76-0x0000000000000000-mapping.dmp

Download
memory/1816-80-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads