remcos | 08b1feef06418988ebe21c6b47c7a0d9b593d5de5ae65f23c41c7092006d2261

General

Target

Roshan Basnayaka CV.exe
Size

1017KB
MD5

b1d073104bbfc0210465938d4d83cab3
SHA1

3d56e396ec24127071e94226c4d5b654ffe3afc2
SHA256

32c38d159ca596fc6f8696c7462299312a8b243dd4ea75086946494f5c5cd801
SHA512

e797a37a74182b6a330874cb8616a341c5b8c6f736c9d0597e49bc8f5abf99a0bfa0b5f6a5578cb7bd6b1d557dfa7bac3d041ef30c1b42ffce1848ff8d3435f0
SSDEEP

24576:fK9SwdINS9riJ77z47hiGZXJkHrxPdIKkQ2FL:6H9r0778VdzKkQQL

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

1492 oos.exe
1924 oos.exe
Loads dropped DLL 2 IoCs

Processes:

cmd.exe

pid process

680 cmd.exe
680 cmd.exe

pid	process
1492	oos.exe
1924	oos.exe

pid	process
680	cmd.exe
680	cmd.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

oos.exeRoshan Basnayaka CV.exe

description	ioc	process
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-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\	Roshan Basnayaka CV.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\""	Roshan Basnayaka CV.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\	Roshan Basnayaka CV.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\""	Roshan Basnayaka CV.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\	oos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\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

Suspicious use of SetThreadContext 2 IoCs

Processes:

Roshan Basnayaka CV.exeoos.exe

description	pid	process	target process
PID 2024 set thread context of 1684	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 1492 set thread context of 1924	1492	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 behavior: EnumeratesProcesses 2 IoCs

Processes:

Roshan Basnayaka CV.exe

pid process

2024 Roshan Basnayaka CV.exe
2024 Roshan Basnayaka CV.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Roshan Basnayaka CV.exe

description pid process

Token: SeDebugPrivilege 2024 Roshan Basnayaka CV.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

oos.exe

pid process

1924 oos.exe

pid	process
2024	Roshan Basnayaka CV.exe
2024	Roshan Basnayaka CV.exe

description	pid	process
Token: SeDebugPrivilege	2024	Roshan Basnayaka CV.exe

pid	process
1924	oos.exe

Suspicious use of WriteProcessMemory 46 IoCs

Processes:

Roshan Basnayaka CV.exeRoshan Basnayaka CV.exeWScript.execmd.exeoos.exe

description	pid	process	target process
PID 2024 wrote to memory of 296	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 296	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 296	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 296	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 980	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 980	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 980	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 980	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 1684	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 1684	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 1684	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 1684	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 1684	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 1684	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 1684	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 1684	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 1684	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 1684	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 1684	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 1684	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 2024 wrote to memory of 1684	2024	Roshan Basnayaka CV.exe	Roshan Basnayaka CV.exe
PID 1684 wrote to memory of 1816	1684	Roshan Basnayaka CV.exe	WScript.exe
PID 1684 wrote to memory of 1816	1684	Roshan Basnayaka CV.exe	WScript.exe
PID 1684 wrote to memory of 1816	1684	Roshan Basnayaka CV.exe	WScript.exe
PID 1684 wrote to memory of 1816	1684	Roshan Basnayaka CV.exe	WScript.exe
PID 1816 wrote to memory of 680	1816	WScript.exe	cmd.exe
PID 1816 wrote to memory of 680	1816	WScript.exe	cmd.exe
PID 1816 wrote to memory of 680	1816	WScript.exe	cmd.exe
PID 1816 wrote to memory of 680	1816	WScript.exe	cmd.exe
PID 680 wrote to memory of 1492	680	cmd.exe	oos.exe
PID 680 wrote to memory of 1492	680	cmd.exe	oos.exe
PID 680 wrote to memory of 1492	680	cmd.exe	oos.exe
PID 680 wrote to memory of 1492	680	cmd.exe	oos.exe
PID 1492 wrote to memory of 1924	1492	oos.exe	oos.exe
PID 1492 wrote to memory of 1924	1492	oos.exe	oos.exe
PID 1492 wrote to memory of 1924	1492	oos.exe	oos.exe
PID 1492 wrote to memory of 1924	1492	oos.exe	oos.exe
PID 1492 wrote to memory of 1924	1492	oos.exe	oos.exe
PID 1492 wrote to memory of 1924	1492	oos.exe	oos.exe
PID 1492 wrote to memory of 1924	1492	oos.exe	oos.exe
PID 1492 wrote to memory of 1924	1492	oos.exe	oos.exe
PID 1492 wrote to memory of 1924	1492	oos.exe	oos.exe
PID 1492 wrote to memory of 1924	1492	oos.exe	oos.exe
PID 1492 wrote to memory of 1924	1492	oos.exe	oos.exe
PID 1492 wrote to memory of 1924	1492	oos.exe	oos.exe
PID 1492 wrote to memory of 1924	1492	oos.exe	oos.exe

C:\Users\Admin\AppData\Local\Temp\Roshan Basnayaka CV.exe
"C:\Users\Admin\AppData\Local\Temp\Roshan Basnayaka CV.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2024

C:\Users\Admin\AppData\Local\Temp\Roshan Basnayaka CV.exe
"C:\Users\Admin\AppData\Local\Temp\Roshan Basnayaka CV.exe"
2⤵
PID:296

C:\Users\Admin\AppData\Local\Temp\Roshan Basnayaka CV.exe
"C:\Users\Admin\AppData\Local\Temp\Roshan Basnayaka CV.exe"
2⤵
PID:980

C:\Users\Admin\AppData\Local\Temp\Roshan Basnayaka CV.exe
"C:\Users\Admin\AppData\Local\Temp\Roshan Basnayaka CV.exe"
2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1684

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:1816

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:680

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:1492

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:1924

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
1017KB

MD5
b1d073104bbfc0210465938d4d83cab3

SHA1
3d56e396ec24127071e94226c4d5b654ffe3afc2

SHA256
32c38d159ca596fc6f8696c7462299312a8b243dd4ea75086946494f5c5cd801

SHA512
e797a37a74182b6a330874cb8616a341c5b8c6f736c9d0597e49bc8f5abf99a0bfa0b5f6a5578cb7bd6b1d557dfa7bac3d041ef30c1b42ffce1848ff8d3435f0

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
1017KB

MD5
b1d073104bbfc0210465938d4d83cab3

SHA1
3d56e396ec24127071e94226c4d5b654ffe3afc2

SHA256
32c38d159ca596fc6f8696c7462299312a8b243dd4ea75086946494f5c5cd801

SHA512
e797a37a74182b6a330874cb8616a341c5b8c6f736c9d0597e49bc8f5abf99a0bfa0b5f6a5578cb7bd6b1d557dfa7bac3d041ef30c1b42ffce1848ff8d3435f0

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
1017KB

MD5
b1d073104bbfc0210465938d4d83cab3

SHA1
3d56e396ec24127071e94226c4d5b654ffe3afc2

SHA256
32c38d159ca596fc6f8696c7462299312a8b243dd4ea75086946494f5c5cd801

SHA512
e797a37a74182b6a330874cb8616a341c5b8c6f736c9d0597e49bc8f5abf99a0bfa0b5f6a5578cb7bd6b1d557dfa7bac3d041ef30c1b42ffce1848ff8d3435f0

Download Submit
\Users\Admin\AppData\Roaming\oos.exe
Filesize
1017KB

MD5
b1d073104bbfc0210465938d4d83cab3

SHA1
3d56e396ec24127071e94226c4d5b654ffe3afc2

SHA256
32c38d159ca596fc6f8696c7462299312a8b243dd4ea75086946494f5c5cd801

SHA512
e797a37a74182b6a330874cb8616a341c5b8c6f736c9d0597e49bc8f5abf99a0bfa0b5f6a5578cb7bd6b1d557dfa7bac3d041ef30c1b42ffce1848ff8d3435f0

Download Submit
\Users\Admin\AppData\Roaming\oos.exe
Filesize
1017KB

MD5
b1d073104bbfc0210465938d4d83cab3

SHA1
3d56e396ec24127071e94226c4d5b654ffe3afc2

SHA256
32c38d159ca596fc6f8696c7462299312a8b243dd4ea75086946494f5c5cd801

SHA512
e797a37a74182b6a330874cb8616a341c5b8c6f736c9d0597e49bc8f5abf99a0bfa0b5f6a5578cb7bd6b1d557dfa7bac3d041ef30c1b42ffce1848ff8d3435f0

Download Submit
memory/680-81-0x0000000000000000-mapping.dmp

Download
memory/1492-87-0x0000000000F00000-0x0000000001004000-memory.dmp

Filesize
1.0MB

Download
memory/1492-85-0x0000000000000000-mapping.dmp

Download
memory/1684-63-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1684-60-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1684-67-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1684-68-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1684-70-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1684-73-0x000000000043168C-mapping.dmp

Download
memory/1684-72-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1684-76-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1684-78-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1684-61-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1684-65-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1684-66-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1816-77-0x0000000000000000-mapping.dmp

Download
memory/1924-102-0x000000000043168C-mapping.dmp

Download
memory/1924-108-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1924-107-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1924-106-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/2024-54-0x00000000000C0000-0x00000000001C4000-memory.dmp

Filesize
1.0MB

Download
memory/2024-55-0x00000000759F1000-0x00000000759F3000-memory.dmp

Filesize
8KB

Download
memory/2024-56-0x0000000000530000-0x0000000000540000-memory.dmp

Filesize
64KB

Download
memory/2024-57-0x0000000000A10000-0x0000000000A1A000-memory.dmp

Filesize
40KB

Download
memory/2024-58-0x0000000005940000-0x00000000059F2000-memory.dmp

Filesize
712KB

Download
memory/2024-59-0x00000000052E0000-0x000000000535C000-memory.dmp

Filesize
496KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads