remcos | 8bbd6b6b3b575d119502eeb547ba8a17243bddb103f12b5e052eada6e5dec27e

General

Target

PO 16395.exe
Size

17KB
MD5

a7c4cbcc1aaeb9918d38822d4d382349
SHA1

7069859f77406fa4b71de748665cb5708677941d
SHA256

8bbd6b6b3b575d119502eeb547ba8a17243bddb103f12b5e052eada6e5dec27e
SHA512

77b7718e853661b61c9ec279e8c15e251636c27b0f4a49c9d0f7703b04d8a1b484ee52fbed8e8ab81098b4a968bfbc059c794d4691925d5b6511b7a0ae492eb5
SSDEEP

384:nJHvMswZji7RCwLn+JUL+Vg2eRBwdmZlZ:hvMTG7AqKAR6dMZ

Score

10^/10

remcos 50005 persistence rat

Malware Config

Extracted

Family

remcos

Botnet

50005

C2

45.155.165.117:50005

Attributes

audio_folder
MicRecords
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
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
jubjutgwfkpjgsh-G1HYQL
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

Signatures

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

PO 16395.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rkmbn = "\"C:\\Users\\Admin\\AppData\\Roaming\\Qbqxanaft\\Rkmbn.exe\""	PO 16395.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PO 16395.exe

description pid process target process

PID 860 set thread context of 1432 860 PO 16395.exe PO 16395.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 1 IoCs

Processes:

powershell.exe

pid process

552 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO 16395.exepowershell.exe

description pid process

Token: SeDebugPrivilege 860 PO 16395.exe
Token: SeDebugPrivilege 552 powershell.exe

description	pid	process	target process
PID 860 set thread context of 1432	860	PO 16395.exe	PO 16395.exe

pid	process
552	powershell.exe

description	pid	process
Token: SeDebugPrivilege	860	PO 16395.exe
Token: SeDebugPrivilege	552	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

PO 16395.exe

description	pid	process	target process
PID 860 wrote to memory of 552	860	PO 16395.exe	powershell.exe
PID 860 wrote to memory of 552	860	PO 16395.exe	powershell.exe
PID 860 wrote to memory of 552	860	PO 16395.exe	powershell.exe
PID 860 wrote to memory of 552	860	PO 16395.exe	powershell.exe
PID 860 wrote to memory of 1432	860	PO 16395.exe	PO 16395.exe
PID 860 wrote to memory of 1432	860	PO 16395.exe	PO 16395.exe
PID 860 wrote to memory of 1432	860	PO 16395.exe	PO 16395.exe
PID 860 wrote to memory of 1432	860	PO 16395.exe	PO 16395.exe
PID 860 wrote to memory of 1432	860	PO 16395.exe	PO 16395.exe
PID 860 wrote to memory of 1432	860	PO 16395.exe	PO 16395.exe
PID 860 wrote to memory of 1432	860	PO 16395.exe	PO 16395.exe
PID 860 wrote to memory of 1432	860	PO 16395.exe	PO 16395.exe
PID 860 wrote to memory of 1432	860	PO 16395.exe	PO 16395.exe
PID 860 wrote to memory of 1432	860	PO 16395.exe	PO 16395.exe
PID 860 wrote to memory of 1432	860	PO 16395.exe	PO 16395.exe
PID 860 wrote to memory of 1432	860	PO 16395.exe	PO 16395.exe
PID 860 wrote to memory of 1432	860	PO 16395.exe	PO 16395.exe

C:\Users\Admin\AppData\Local\Temp\PO 16395.exe
"C:\Users\Admin\AppData\Local\Temp\PO 16395.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:860

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANAA4AA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:552

C:\Users\Admin\AppData\Local\Temp\PO 16395.exe
"C:\Users\Admin\AppData\Local\Temp\PO 16395.exe"
2⤵
PID:1432

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

memory/552-58-0x0000000000000000-mapping.dmp

Download
memory/552-60-0x000000006EEC0000-0x000000006F46B000-memory.dmp

Filesize
5.7MB

Download
memory/552-61-0x000000006EEC0000-0x000000006F46B000-memory.dmp

Filesize
5.7MB

Download
memory/552-62-0x000000006EEC0000-0x000000006F46B000-memory.dmp

Filesize
5.7MB

Download
memory/860-54-0x0000000000120000-0x000000000012A000-memory.dmp

Filesize
40KB

Download
memory/860-55-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

Filesize
8KB

Download
memory/860-56-0x0000000005520000-0x00000000055FE000-memory.dmp

Filesize
888KB

Download
memory/860-57-0x0000000005710000-0x00000000057A2000-memory.dmp

Filesize
584KB

Download
memory/1432-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-66-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-64-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-68-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-71-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-70-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-69-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-76-0x00000000004327A4-mapping.dmp

Download
memory/1432-75-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-73-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-79-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-80-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/1432-81-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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