remcos | 109a5ffb53cd3311e68c5a28f84fd1d7eb668de3db43a35c344f83785187f915

General

Target

c54342185881953b5e36fe05f977cc00.exe
Size

901KB
MD5

c54342185881953b5e36fe05f977cc00
SHA1

e2185b97ad8f467c51470da67ac09e07dab8fe60
SHA256

109a5ffb53cd3311e68c5a28f84fd1d7eb668de3db43a35c344f83785187f915
SHA512

4b16174315b28a250411a86d3b4f297be69a4e4f51899ea7ba94c1e0dde580e5f2f6d331fc5051865aa682f96be5bd3ec2a18caecfd7eae85f58702d0f7279bf
SSDEEP

12288:8HLoR65AXwgFvuSS3sGs6+XqIXq9MZj9Iba0vWtgA7K+zqrkb1NnSzv:8roR6qgEvaiZBEacBuoe1NnMv

Score

10^/10

remcos remotehost rat upx

Malware Config

Extracted

Family

remcos

Version

3.1.5 Light

Botnet

RemoteHost

C2

91.243.44.5:5149

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
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-W0VXG0
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

UPX packed file 9 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2788-9-0x0000000000400000-0x0000000000476000-memory.dmp	upx
behavioral1/memory/2788-10-0x0000000000400000-0x0000000000476000-memory.dmp	upx
behavioral1/memory/2788-14-0x0000000000400000-0x0000000000476000-memory.dmp	upx
behavioral1/memory/2788-15-0x0000000000400000-0x0000000000476000-memory.dmp	upx
behavioral1/memory/2788-16-0x0000000000400000-0x0000000000476000-memory.dmp	upx
behavioral1/memory/2788-18-0x0000000000400000-0x0000000000476000-memory.dmp	upx
behavioral1/memory/2788-19-0x0000000000400000-0x0000000000476000-memory.dmp	upx
behavioral1/memory/2788-20-0x0000000000400000-0x0000000000476000-memory.dmp	upx
behavioral1/memory/2660-24-0x0000000002860000-0x00000000028A0000-memory.dmp	upx

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2344 set thread context of 2788	2344	c54342185881953b5e36fe05f977cc00.exe	30

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2660	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2660	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 2660	2344	c54342185881953b5e36fe05f977cc00.exe	28
PID 2344 wrote to memory of 2660	2344	c54342185881953b5e36fe05f977cc00.exe	28
PID 2344 wrote to memory of 2660	2344	c54342185881953b5e36fe05f977cc00.exe	28
PID 2344 wrote to memory of 2660	2344	c54342185881953b5e36fe05f977cc00.exe	28
PID 2344 wrote to memory of 2788	2344	c54342185881953b5e36fe05f977cc00.exe	30
PID 2344 wrote to memory of 2788	2344	c54342185881953b5e36fe05f977cc00.exe	30
PID 2344 wrote to memory of 2788	2344	c54342185881953b5e36fe05f977cc00.exe	30
PID 2344 wrote to memory of 2788	2344	c54342185881953b5e36fe05f977cc00.exe	30
PID 2344 wrote to memory of 2788	2344	c54342185881953b5e36fe05f977cc00.exe	30
PID 2344 wrote to memory of 2788	2344	c54342185881953b5e36fe05f977cc00.exe	30
PID 2344 wrote to memory of 2788	2344	c54342185881953b5e36fe05f977cc00.exe	30
PID 2344 wrote to memory of 2788	2344	c54342185881953b5e36fe05f977cc00.exe	30

C:\Users\Admin\AppData\Local\Temp\c54342185881953b5e36fe05f977cc00.exe
"C:\Users\Admin\AppData\Local\Temp\c54342185881953b5e36fe05f977cc00.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\c54342185881953b5e36fe05f977cc00.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2660
- C:\Users\Admin\AppData\Local\Temp\c54342185881953b5e36fe05f977cc00.exe
  "C:\Users\Admin\AppData\Local\Temp\c54342185881953b5e36fe05f977cc00.exe"
  2⤵
  PID:2788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2344-6-0x0000000008F00000-0x0000000008FAC000-memory.dmp

Filesize
688KB

Download
memory/2344-0-0x0000000000B40000-0x0000000000C28000-memory.dmp

Filesize
928KB

Download
memory/2344-2-0x0000000004AD0000-0x0000000004B10000-memory.dmp

Filesize
256KB

Download
memory/2344-3-0x00000000004B0000-0x00000000004CA000-memory.dmp

Filesize
104KB

Download
memory/2344-4-0x0000000074740000-0x0000000074E2E000-memory.dmp

Filesize
6.9MB

Download
memory/2344-5-0x0000000004AD0000-0x0000000004B10000-memory.dmp

Filesize
256KB

Download
memory/2344-7-0x0000000004A70000-0x0000000004AAA000-memory.dmp

Filesize
232KB

Download
memory/2344-17-0x0000000074740000-0x0000000074E2E000-memory.dmp

Filesize
6.9MB

Download
memory/2344-1-0x0000000074740000-0x0000000074E2E000-memory.dmp

Filesize
6.9MB

Download
memory/2660-26-0x0000000002860000-0x00000000028A0000-memory.dmp

Filesize
256KB

Download
memory/2660-25-0x0000000074010000-0x00000000745BB000-memory.dmp

Filesize
5.7MB

Download
memory/2660-24-0x0000000002860000-0x00000000028A0000-memory.dmp

Filesize
256KB

Download
memory/2660-27-0x0000000074010000-0x00000000745BB000-memory.dmp

Filesize
5.7MB

Download
memory/2660-23-0x0000000074010000-0x00000000745BB000-memory.dmp

Filesize
5.7MB

Download
memory/2788-14-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/2788-16-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/2788-18-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/2788-19-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/2788-20-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/2788-15-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/2788-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2788-10-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/2788-9-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download
memory/2788-8-0x0000000000400000-0x0000000000476000-memory.dmp

Filesize
472KB

Download

Analysis

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