remcos | 12f995b0ef1cf5bced4ab5c1361e5f9b1b1f95510fb82033bec4ec43044c6266

General

Target

58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe
Size

599KB
MD5

e85268409de1978293cbb195740d2938
SHA1

6c6892e6d1f78718a8aceba3cd5e80141486feb2
SHA256

58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56
SHA512

36f00cf4ac2862b9024f581ce5b6c69602a1e23c24169bdc55f83d0d2c4267cdaeeb6f6b0b5c4c879767ad7fbcc63a381549b5b8cc17fefdfe6cfef8ae2cf65c
SSDEEP

12288:EWfxn+fRhQuzl6oBW7mhoYmOMWOiLEDI+TU2N5IQHjgPTBrSRxD5Ynzf2XKMWYMv:Tfxn+fRhQuzl6oBW7mhoYmOMWOiLEDJv

Score

10^/10

remcos host discovery rat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

185.222.58.243:8780

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
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_bieveakahtwoqbg
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
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
Remcos family
remcos

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\%startupname%.lnk	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2584 set thread context of 2596	2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe	31

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe
2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2596	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2584 wrote to memory of 2588	2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe	30
PID 2584 wrote to memory of 2588	2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe	30
PID 2584 wrote to memory of 2588	2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe	30
PID 2584 wrote to memory of 2588	2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe	30
PID 2584 wrote to memory of 2596	2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe	31
PID 2584 wrote to memory of 2596	2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe	31
PID 2584 wrote to memory of 2596	2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe	31
PID 2584 wrote to memory of 2596	2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe	31
PID 2584 wrote to memory of 2596	2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe	31
PID 2584 wrote to memory of 2596	2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe	31
PID 2584 wrote to memory of 2596	2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe	31
PID 2584 wrote to memory of 2596	2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe	31
PID 2584 wrote to memory of 2596	2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe	31
PID 2584 wrote to memory of 2596	2584	58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe	31

C:\Users\Admin\AppData\Local\Temp\58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe
"C:\Users\Admin\AppData\Local\Temp\58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2584
- C:\Users\Admin\AppData\Local\Temp\58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe
  "C:\Users\Admin\AppData\Local\Temp\58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe"
  2⤵
  PID:2588
- C:\Users\Admin\AppData\Local\Temp\58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe
  "C:\Users\Admin\AppData\Local\Temp\58215107f6e87ad9b3ebe4ce23aaa91b562c99f307a19ce719179b2d27aaef56.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2596

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2584-0-0x000000007440E000-0x000000007440F000-memory.dmp

Filesize
4KB

Download
memory/2584-1-0x00000000009E0000-0x0000000000A7C000-memory.dmp

Filesize
624KB

Download
memory/2584-3-0x0000000004B10000-0x0000000004B6C000-memory.dmp

Filesize
368KB

Download
memory/2584-22-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/2596-16-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2596-18-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2596-8-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2596-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2596-12-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2596-10-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2596-6-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2596-19-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2596-4-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2596-23-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2596-25-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

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