remcos | 6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952

General

Target

6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952.exe
Size

949KB
MD5

2881489b0971a1e0c7be38b37361b3e8
SHA1

e804a1477bd81bc4196ae36ec0a6304e5b381530
SHA256

6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952
SHA512

99a765aca36581839c9c9cec8807258c6159e2b0bceb926519257c894e5458a4285f50d0f3debc0f184fb48eadb265e9fbc068e2ad9610034febefc102d0f054
SSDEEP

12288:Wp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRzwAY3Az1:WpugRNJI1D39dlfGQrFUxwAeAz1

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Host

C2

213.183.58.19:4000

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
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
read.dat
keylog_flag
false
keylog_folder
CastC
keylog_path
%AppData%
mouse_option
false
mutex
remcos_sccafsoidz
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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\Control Panel\International\Geo\Nation	6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952.exe

Executes dropped EXE 2 IoCs

pid	Process
3900	sbietrcl.exe
5528	sbietrcl.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3900 set thread context of 5528	3900	sbietrcl.exe	97

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	6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
5364	6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952.exe
5364	6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952.exe
5364	6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952.exe
5364	6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952.exe
5364	6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952.exe
5364	6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952.exe
3900	sbietrcl.exe
3900	sbietrcl.exe
3900	sbietrcl.exe
3900	sbietrcl.exe
3900	sbietrcl.exe
3900	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5364	6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952.exe
Token: SeDebugPrivilege	3900	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 5364 wrote to memory of 3900	5364	6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952.exe	95
PID 5364 wrote to memory of 3900	5364	6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952.exe	95
PID 5364 wrote to memory of 3900	5364	6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952.exe	95
PID 3900 wrote to memory of 5528	3900	sbietrcl.exe	97
PID 3900 wrote to memory of 5528	3900	sbietrcl.exe	97
PID 3900 wrote to memory of 5528	3900	sbietrcl.exe	97
PID 3900 wrote to memory of 5528	3900	sbietrcl.exe	97
PID 3900 wrote to memory of 5528	3900	sbietrcl.exe	97
PID 3900 wrote to memory of 5528	3900	sbietrcl.exe	97
PID 3900 wrote to memory of 5528	3900	sbietrcl.exe	97
PID 3900 wrote to memory of 5528	3900	sbietrcl.exe	97
PID 3900 wrote to memory of 5528	3900	sbietrcl.exe	97

C:\Users\Admin\AppData\Local\Temp\6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952.exe
"C:\Users\Admin\AppData\Local\Temp\6b056bd136910f3d28d2824d8cf6ee36a2cc1310804a72ba7fead555ef30e952.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5364
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3900
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    PID:5528

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
958KB

MD5
8a342b93bbec96b4439d7387d44094a4

SHA1
40f2bc7d72a89e4ae7c3b7a2ccbecd7ea69450ce

SHA256
3cbe1d459c85156a6977f261416ca9683462940dc3a8b6ba34179f7cd7bce474

SHA512
dc7d566975aa6824eb9dc78f2485f1a000780f0579ddfbc9d9d1fd3974d92646935b5670c50b47c4c0bcb09c34d1c5e0d9555fc1e75aa40ced1717a7f0fef8c9

Download Submit
memory/3900-40-0x00000000753B0000-0x0000000075961000-memory.dmp

Filesize
5.7MB

Download
memory/3900-33-0x00000000753B0000-0x0000000075961000-memory.dmp

Filesize
5.7MB

Download
memory/3900-34-0x00000000753B0000-0x0000000075961000-memory.dmp

Filesize
5.7MB

Download
memory/3900-31-0x00000000753B0000-0x0000000075961000-memory.dmp

Filesize
5.7MB

Download
memory/3900-32-0x00000000753B0000-0x0000000075961000-memory.dmp

Filesize
5.7MB

Download
memory/5364-6-0x00000000753B0000-0x0000000075961000-memory.dmp

Filesize
5.7MB

Download
memory/5364-19-0x00000000753B0000-0x0000000075961000-memory.dmp

Filesize
5.7MB

Download
memory/5364-30-0x00000000753B0000-0x0000000075961000-memory.dmp

Filesize
5.7MB

Download
memory/5364-18-0x00000000753B2000-0x00000000753B3000-memory.dmp

Filesize
4KB

Download
memory/5364-5-0x00000000753B0000-0x0000000075961000-memory.dmp

Filesize
5.7MB

Download
memory/5364-0-0x00000000753B2000-0x00000000753B3000-memory.dmp

Filesize
4KB

Download
memory/5364-2-0x00000000753B0000-0x0000000075961000-memory.dmp

Filesize
5.7MB

Download
memory/5364-1-0x00000000753B0000-0x0000000075961000-memory.dmp

Filesize
5.7MB

Download
memory/5528-36-0x00000000005D0000-0x00000000005E7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads