remcos | 438b28e431212ff427da7daac3aa292279653fce1c4fcefa29b7fafb61beaa39

General

Target

72d9328652d8cdcab7d7efb7d97263a5.exe
Size

1.2MB
MD5

72d9328652d8cdcab7d7efb7d97263a5
SHA1

69a36d2e0d603bf4d172a832b3bc66961c1fdca8
SHA256

438b28e431212ff427da7daac3aa292279653fce1c4fcefa29b7fafb61beaa39
SHA512

094eccb8b09ac04f624e83bb9c8ce4b3f632114c921815596698623f754e72e3515cb5dbd4a0404b850cbf63bac497d1b768917f64f276f54976234bce848af3
SSDEEP

24576:Si/6oq/d3EeCGf7r6Mobb1zUzgcn4SYRM:SiqPfR41zUzdnCR

Score

10^/10

remcos new1 persistence rat

Malware Config

Extracted

Family

remcos

Version

3.1.5 Pro

Botnet

new1

C2

172.93.187.66:1642

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-BLXH2T
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
notepad;solitaire;

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

CustAttr .NET packer 1 IoCs

Detects CustAttr .NET packer in memory.

Processes:

resource	yara_rule
behavioral1/memory/2492-3-0x0000000000210000-0x0000000000222000-memory.dmp	CustAttr

Executes dropped EXE 2 IoCs

Processes:

remcos.exeremcos.exe

pid process

1884 remcos.exe
2084 remcos.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1928 cmd.exe

pid	process
1884	remcos.exe
2084	remcos.exe

pid	process
1928	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

remcos.exe72d9328652d8cdcab7d7efb7d97263a5.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	remcos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000\Software\Microsoft\Windows\CurrentVersion\Run\Remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\""	72d9328652d8cdcab7d7efb7d97263a5.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

72d9328652d8cdcab7d7efb7d97263a5.exeremcos.exe

description	pid	process	target process
PID 2492 set thread context of 808	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	72d9328652d8cdcab7d7efb7d97263a5.exe
PID 1884 set thread context of 2084	1884	remcos.exe	remcos.exe

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

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

2312 schtasks.exe
2368 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

72d9328652d8cdcab7d7efb7d97263a5.exeremcos.exe

pid process

2492 72d9328652d8cdcab7d7efb7d97263a5.exe
1884 remcos.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

72d9328652d8cdcab7d7efb7d97263a5.exeremcos.exe

description pid process

Token: SeDebugPrivilege 2492 72d9328652d8cdcab7d7efb7d97263a5.exe
Token: SeDebugPrivilege 1884 remcos.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

remcos.exe

pid process

2084 remcos.exe

pid	process
2312	schtasks.exe
2368	schtasks.exe

pid	process
2492	72d9328652d8cdcab7d7efb7d97263a5.exe
1884	remcos.exe

description	pid	process
Token: SeDebugPrivilege	2492	72d9328652d8cdcab7d7efb7d97263a5.exe
Token: SeDebugPrivilege	1884	remcos.exe

pid	process
2084	remcos.exe

Suspicious use of WriteProcessMemory 46 IoCs

Processes:

72d9328652d8cdcab7d7efb7d97263a5.exe72d9328652d8cdcab7d7efb7d97263a5.exeWScript.execmd.exeremcos.exe

description	pid	process	target process
PID 2492 wrote to memory of 2312	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	schtasks.exe
PID 2492 wrote to memory of 2312	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	schtasks.exe
PID 2492 wrote to memory of 2312	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	schtasks.exe
PID 2492 wrote to memory of 2312	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	schtasks.exe
PID 2492 wrote to memory of 808	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	72d9328652d8cdcab7d7efb7d97263a5.exe
PID 2492 wrote to memory of 808	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	72d9328652d8cdcab7d7efb7d97263a5.exe
PID 2492 wrote to memory of 808	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	72d9328652d8cdcab7d7efb7d97263a5.exe
PID 2492 wrote to memory of 808	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	72d9328652d8cdcab7d7efb7d97263a5.exe
PID 2492 wrote to memory of 808	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	72d9328652d8cdcab7d7efb7d97263a5.exe
PID 2492 wrote to memory of 808	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	72d9328652d8cdcab7d7efb7d97263a5.exe
PID 2492 wrote to memory of 808	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	72d9328652d8cdcab7d7efb7d97263a5.exe
PID 2492 wrote to memory of 808	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	72d9328652d8cdcab7d7efb7d97263a5.exe
PID 2492 wrote to memory of 808	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	72d9328652d8cdcab7d7efb7d97263a5.exe
PID 2492 wrote to memory of 808	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	72d9328652d8cdcab7d7efb7d97263a5.exe
PID 2492 wrote to memory of 808	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	72d9328652d8cdcab7d7efb7d97263a5.exe
PID 2492 wrote to memory of 808	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	72d9328652d8cdcab7d7efb7d97263a5.exe
PID 2492 wrote to memory of 808	2492	72d9328652d8cdcab7d7efb7d97263a5.exe	72d9328652d8cdcab7d7efb7d97263a5.exe
PID 808 wrote to memory of 2296	808	72d9328652d8cdcab7d7efb7d97263a5.exe	WScript.exe
PID 808 wrote to memory of 2296	808	72d9328652d8cdcab7d7efb7d97263a5.exe	WScript.exe
PID 808 wrote to memory of 2296	808	72d9328652d8cdcab7d7efb7d97263a5.exe	WScript.exe
PID 808 wrote to memory of 2296	808	72d9328652d8cdcab7d7efb7d97263a5.exe	WScript.exe
PID 2296 wrote to memory of 1928	2296	WScript.exe	cmd.exe
PID 2296 wrote to memory of 1928	2296	WScript.exe	cmd.exe
PID 2296 wrote to memory of 1928	2296	WScript.exe	cmd.exe
PID 2296 wrote to memory of 1928	2296	WScript.exe	cmd.exe
PID 1928 wrote to memory of 1884	1928	cmd.exe	remcos.exe
PID 1928 wrote to memory of 1884	1928	cmd.exe	remcos.exe
PID 1928 wrote to memory of 1884	1928	cmd.exe	remcos.exe
PID 1928 wrote to memory of 1884	1928	cmd.exe	remcos.exe
PID 1884 wrote to memory of 2368	1884	remcos.exe	schtasks.exe
PID 1884 wrote to memory of 2368	1884	remcos.exe	schtasks.exe
PID 1884 wrote to memory of 2368	1884	remcos.exe	schtasks.exe
PID 1884 wrote to memory of 2368	1884	remcos.exe	schtasks.exe
PID 1884 wrote to memory of 2084	1884	remcos.exe	remcos.exe
PID 1884 wrote to memory of 2084	1884	remcos.exe	remcos.exe
PID 1884 wrote to memory of 2084	1884	remcos.exe	remcos.exe
PID 1884 wrote to memory of 2084	1884	remcos.exe	remcos.exe
PID 1884 wrote to memory of 2084	1884	remcos.exe	remcos.exe
PID 1884 wrote to memory of 2084	1884	remcos.exe	remcos.exe
PID 1884 wrote to memory of 2084	1884	remcos.exe	remcos.exe
PID 1884 wrote to memory of 2084	1884	remcos.exe	remcos.exe
PID 1884 wrote to memory of 2084	1884	remcos.exe	remcos.exe
PID 1884 wrote to memory of 2084	1884	remcos.exe	remcos.exe
PID 1884 wrote to memory of 2084	1884	remcos.exe	remcos.exe
PID 1884 wrote to memory of 2084	1884	remcos.exe	remcos.exe
PID 1884 wrote to memory of 2084	1884	remcos.exe	remcos.exe

C:\Users\Admin\AppData\Local\Temp\72d9328652d8cdcab7d7efb7d97263a5.exe
"C:\Users\Admin\AppData\Local\Temp\72d9328652d8cdcab7d7efb7d97263a5.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2492

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QXORHiROtWShg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6B5.tmp"
2⤵
- Creates scheduled task(s)
PID:2312

C:\Users\Admin\AppData\Local\Temp\72d9328652d8cdcab7d7efb7d97263a5.exe
"C:\Users\Admin\AppData\Local\Temp\72d9328652d8cdcab7d7efb7d97263a5.exe"
2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:808

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:2296

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
4⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1928

C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1884

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QXORHiROtWShg" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE540.tmp"
6⤵
- Creates scheduled task(s)
PID:2368

C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
"C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
6⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:2084

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.vbs
Filesize
418B

MD5
b92d64fe5b1d1f59df4b738262aea8df

SHA1
c8fb1981759c2d9bb2ec91b705985fba5fc7af63

SHA256
fa20e9aab03dc8e9f1910aaf0cf42662379fa16ae3a22642084fb97fa3d4f83a

SHA512
2566248b93c0cfb0414f033b8dd18bbd4f88180093eac2861107289bcb4ee160f9593706ff1f7d1f2e4ecea430d67a5a2897551a4f9ebd82b707243e300520e2

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp6B5.tmp
Filesize
1KB

MD5
b18f012ad122cdfb9d628e6bf8b05b83

SHA1
1a9ad9c020743d86599fb24af2226c74209d490b

SHA256
d8d5a9b4ca7c131ab66875cf9c089a16e6d9cda7c5f8b23c4ec65f184d8e2df5

SHA512
850cd4eafcee335b48eda0d61611de01bfdc6e5f87d73c4522eef7b6bfface5ffeea4e14d14b47557c3c0c9e2d6b739c9edf89c7036c7c65f897c6fcdf0e7644

Download Submit
C:\Users\Admin\AppData\Roaming\Remcos\logs.dat
Filesize
148B

MD5
3f1293a201361b55867c85459739dae4

SHA1
55be23becb447bf045ebc9381f88cb25be15fc5d

SHA256
afece1fca6c8355a46368813b15bf5cdf83067594136dac518508b574b089295

SHA512
a740e3e0b66217742a832bdabe218fe18df4c5a6a647e204ac0889c8af8167d1a97853aa32c27740a3db88195c7f59262ca7163a453ec67568f3bbce90f4a55c

Download Submit
\Users\Admin\AppData\Roaming\Remcos\remcos.exe
Filesize
1.2MB

MD5
72d9328652d8cdcab7d7efb7d97263a5

SHA1
69a36d2e0d603bf4d172a832b3bc66961c1fdca8

SHA256
438b28e431212ff427da7daac3aa292279653fce1c4fcefa29b7fafb61beaa39

SHA512
094eccb8b09ac04f624e83bb9c8ce4b3f632114c921815596698623f754e72e3515cb5dbd4a0404b850cbf63bac497d1b768917f64f276f54976234bce848af3

Download Submit
memory/808-25-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/808-27-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/808-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/808-22-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/808-21-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/808-13-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/808-14-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/808-15-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/808-16-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/808-17-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/808-19-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/1884-41-0x0000000004A00000-0x0000000004A40000-memory.dmp

Filesize
256KB

Download
memory/1884-65-0x00000000747E0000-0x0000000074ECE000-memory.dmp

Filesize
6.9MB

Download
memory/1884-36-0x00000000747E0000-0x0000000074ECE000-memory.dmp

Filesize
6.9MB

Download
memory/1884-37-0x0000000000F40000-0x0000000001078000-memory.dmp

Filesize
1.2MB

Download
memory/1884-38-0x0000000004A00000-0x0000000004A40000-memory.dmp

Filesize
256KB

Download
memory/1884-40-0x00000000747E0000-0x0000000074ECE000-memory.dmp

Filesize
6.9MB

Download
memory/2084-73-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2084-68-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2084-67-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2084-63-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2084-64-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2084-58-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2492-3-0x0000000000210000-0x0000000000222000-memory.dmp

Filesize
72KB

Download
memory/2492-39-0x00000000747E0000-0x0000000074ECE000-memory.dmp

Filesize
6.9MB

Download
memory/2492-2-0x0000000004F80000-0x0000000004FC0000-memory.dmp

Filesize
256KB

Download
memory/2492-4-0x00000000747E0000-0x0000000074ECE000-memory.dmp

Filesize
6.9MB

Download
memory/2492-5-0x0000000004F80000-0x0000000004FC0000-memory.dmp

Filesize
256KB

Download
memory/2492-0-0x0000000000850000-0x0000000000988000-memory.dmp

Filesize
1.2MB

Download
memory/2492-6-0x0000000005AE0000-0x0000000005BB2000-memory.dmp

Filesize
840KB

Download
memory/2492-7-0x00000000053B0000-0x0000000005428000-memory.dmp

Filesize
480KB

Download
memory/2492-1-0x00000000747E0000-0x0000000074ECE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads