remcos | 0a52296b98cc01f0fd275dda6fb76f1f4193647528d1ea62f3cbc605a97af553

General

Target

SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
Size

1010KB
MD5

67fcff9e7410b378abe0dc36830b5a98
SHA1

dcaccb558565a2c920f43fff9360d5ab2a5703da
SHA256

0a52296b98cc01f0fd275dda6fb76f1f4193647528d1ea62f3cbc605a97af553
SHA512

2c1db2ac279a1dbafef01de3f497a74a3bae754e49258e28f1670837c268316d401749d9c6597e331e10bd3aa3b5887d26f5f495a10c9a393bedd2bfbd5e5331
SSDEEP

24576:RThubcJu1fe3tMlDcI39o5QFHX+5UIvLp:JhuIJuxumlDci6cO5

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 3 IoCs

Processes:

oos.exeoos.exeoos.exe

pid process

4028 oos.exe
3752 oos.exe
3484 oos.exe

pid	process
4028	oos.exe
3752	oos.exe
3484	oos.exe

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:

SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exeWScript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	WScript.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.Win32.PWSX-gen.2654.2943.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\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-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\""	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\kkl = "\"C:\\Users\\Admin\\AppData\\Roaming\\oos.exe\""	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\	oos.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exeoos.exe

description	pid	process	target process
PID 4472 set thread context of 3804	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
PID 4028 set thread context of 3484	4028	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:

SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exeoos.exe

pid process

4472 SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
4472 SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
4028 oos.exe
4028 oos.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exeoos.exe

description pid process

Token: SeDebugPrivilege 4472 SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
Token: SeDebugPrivilege 4028 oos.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

oos.exe

pid process

3484 oos.exe

pid	process
4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
4028	oos.exe
4028	oos.exe

description	pid	process
Token: SeDebugPrivilege	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
Token: SeDebugPrivilege	4028	oos.exe

pid	process
3484	oos.exe

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exeSecuriteInfo.com.Win32.PWSX-gen.2654.2943.exeWScript.execmd.exeoos.exe

description	pid	process	target process
PID 4472 wrote to memory of 3464	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
PID 4472 wrote to memory of 3464	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
PID 4472 wrote to memory of 3464	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
PID 4472 wrote to memory of 3804	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
PID 4472 wrote to memory of 3804	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
PID 4472 wrote to memory of 3804	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
PID 4472 wrote to memory of 3804	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
PID 4472 wrote to memory of 3804	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
PID 4472 wrote to memory of 3804	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
PID 4472 wrote to memory of 3804	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
PID 4472 wrote to memory of 3804	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
PID 4472 wrote to memory of 3804	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
PID 4472 wrote to memory of 3804	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
PID 4472 wrote to memory of 3804	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
PID 4472 wrote to memory of 3804	4472	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
PID 3804 wrote to memory of 4312	3804	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	WScript.exe
PID 3804 wrote to memory of 4312	3804	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	WScript.exe
PID 3804 wrote to memory of 4312	3804	SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe	WScript.exe
PID 4312 wrote to memory of 5024	4312	WScript.exe	cmd.exe
PID 4312 wrote to memory of 5024	4312	WScript.exe	cmd.exe
PID 4312 wrote to memory of 5024	4312	WScript.exe	cmd.exe
PID 5024 wrote to memory of 4028	5024	cmd.exe	oos.exe
PID 5024 wrote to memory of 4028	5024	cmd.exe	oos.exe
PID 5024 wrote to memory of 4028	5024	cmd.exe	oos.exe
PID 4028 wrote to memory of 3752	4028	oos.exe	oos.exe
PID 4028 wrote to memory of 3752	4028	oos.exe	oos.exe
PID 4028 wrote to memory of 3752	4028	oos.exe	oos.exe
PID 4028 wrote to memory of 3484	4028	oos.exe	oos.exe
PID 4028 wrote to memory of 3484	4028	oos.exe	oos.exe
PID 4028 wrote to memory of 3484	4028	oos.exe	oos.exe
PID 4028 wrote to memory of 3484	4028	oos.exe	oos.exe
PID 4028 wrote to memory of 3484	4028	oos.exe	oos.exe
PID 4028 wrote to memory of 3484	4028	oos.exe	oos.exe
PID 4028 wrote to memory of 3484	4028	oos.exe	oos.exe
PID 4028 wrote to memory of 3484	4028	oos.exe	oos.exe
PID 4028 wrote to memory of 3484	4028	oos.exe	oos.exe
PID 4028 wrote to memory of 3484	4028	oos.exe	oos.exe
PID 4028 wrote to memory of 3484	4028	oos.exe	oos.exe
PID 4028 wrote to memory of 3484	4028	oos.exe	oos.exe

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4472

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
"{path}"
2⤵
PID:3464

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Win32.PWSX-gen.2654.2943.exe
"{path}"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3804

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:4312

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\oos.exe"
4⤵
- Suspicious use of WriteProcessMemory
PID:5024

C:\Users\Admin\AppData\Roaming\oos.exe
C:\Users\Admin\AppData\Roaming\oos.exe
5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4028

C:\Users\Admin\AppData\Roaming\oos.exe
"{path}"
6⤵
- Executes dropped EXE
PID:3752

C:\Users\Admin\AppData\Roaming\oos.exe
"{path}"
6⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:3484

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:\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
1010KB

MD5
67fcff9e7410b378abe0dc36830b5a98

SHA1
dcaccb558565a2c920f43fff9360d5ab2a5703da

SHA256
0a52296b98cc01f0fd275dda6fb76f1f4193647528d1ea62f3cbc605a97af553

SHA512
2c1db2ac279a1dbafef01de3f497a74a3bae754e49258e28f1670837c268316d401749d9c6597e331e10bd3aa3b5887d26f5f495a10c9a393bedd2bfbd5e5331

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
1010KB

MD5
67fcff9e7410b378abe0dc36830b5a98

SHA1
dcaccb558565a2c920f43fff9360d5ab2a5703da

SHA256
0a52296b98cc01f0fd275dda6fb76f1f4193647528d1ea62f3cbc605a97af553

SHA512
2c1db2ac279a1dbafef01de3f497a74a3bae754e49258e28f1670837c268316d401749d9c6597e331e10bd3aa3b5887d26f5f495a10c9a393bedd2bfbd5e5331

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
1010KB

MD5
67fcff9e7410b378abe0dc36830b5a98

SHA1
dcaccb558565a2c920f43fff9360d5ab2a5703da

SHA256
0a52296b98cc01f0fd275dda6fb76f1f4193647528d1ea62f3cbc605a97af553

SHA512
2c1db2ac279a1dbafef01de3f497a74a3bae754e49258e28f1670837c268316d401749d9c6597e331e10bd3aa3b5887d26f5f495a10c9a393bedd2bfbd5e5331

Download Submit
C:\Users\Admin\AppData\Roaming\oos.exe
Filesize
1010KB

MD5
67fcff9e7410b378abe0dc36830b5a98

SHA1
dcaccb558565a2c920f43fff9360d5ab2a5703da

SHA256
0a52296b98cc01f0fd275dda6fb76f1f4193647528d1ea62f3cbc605a97af553

SHA512
2c1db2ac279a1dbafef01de3f497a74a3bae754e49258e28f1670837c268316d401749d9c6597e331e10bd3aa3b5887d26f5f495a10c9a393bedd2bfbd5e5331

Download Submit
memory/3464-137-0x0000000000000000-mapping.dmp

Download
memory/3484-158-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/3484-157-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/3484-156-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/3484-155-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/3484-152-0x0000000000000000-mapping.dmp

Download
memory/3752-150-0x0000000000000000-mapping.dmp

Download
memory/3804-138-0x0000000000000000-mapping.dmp

Download
memory/3804-140-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/3804-139-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/3804-144-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/3804-142-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/3804-141-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/4028-147-0x0000000000000000-mapping.dmp

Download
memory/4312-143-0x0000000000000000-mapping.dmp

Download
memory/4472-132-0x00000000000C0000-0x00000000001C2000-memory.dmp

Filesize
1.0MB

Download
memory/4472-136-0x0000000004A10000-0x0000000004A1A000-memory.dmp

Filesize
40KB

Download
memory/4472-135-0x0000000004B40000-0x0000000004BDC000-memory.dmp

Filesize
624KB

Download
memory/4472-134-0x0000000004AA0000-0x0000000004B32000-memory.dmp

Filesize
584KB

Download
memory/4472-133-0x0000000005050000-0x00000000055F4000-memory.dmp

Filesize
5.6MB

Download
memory/5024-146-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads