remcos | 6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00

General

Target

6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00.exe
Size

898KB
MD5

abc6c4342295ae87cd43a22752a82778
SHA1

a9e1390063e50d74b8d8088c2d4b5ce7c5ad0d24
SHA256

6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00
SHA512

46cef365440e3a6aa8deb4044f18d4434c825aa3abfbdf9955eb74ca303a06409aff864e93d572db28b730d48619508f4a886aa705d80e73bdeb9b367777cb2f
SSDEEP

12288:hp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRzwAY3y:hpugRNJI1D39dlfGQrFUxwAey

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-1-5-21-805952410-2104024357-1716932545-1000\Control Panel\International\Geo\Nation	6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00.exe

Executes dropped EXE 2 IoCs

pid	Process
3536	sbietrcl.exe
4368	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-1-5-21-805952410-2104024357-1716932545-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3536 set thread context of 4368	3536	sbietrcl.exe	96

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	6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4344	6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00.exe
4344	6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00.exe
4344	6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00.exe
4344	6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00.exe
4344	6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00.exe
4344	6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00.exe
3536	sbietrcl.exe
3536	sbietrcl.exe
3536	sbietrcl.exe
3536	sbietrcl.exe
3536	sbietrcl.exe
3536	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4344	6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00.exe
Token: SeDebugPrivilege	3536	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4344 wrote to memory of 3536	4344	6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00.exe	94
PID 4344 wrote to memory of 3536	4344	6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00.exe	94
PID 4344 wrote to memory of 3536	4344	6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00.exe	94
PID 3536 wrote to memory of 4368	3536	sbietrcl.exe	96
PID 3536 wrote to memory of 4368	3536	sbietrcl.exe	96
PID 3536 wrote to memory of 4368	3536	sbietrcl.exe	96
PID 3536 wrote to memory of 4368	3536	sbietrcl.exe	96
PID 3536 wrote to memory of 4368	3536	sbietrcl.exe	96
PID 3536 wrote to memory of 4368	3536	sbietrcl.exe	96
PID 3536 wrote to memory of 4368	3536	sbietrcl.exe	96
PID 3536 wrote to memory of 4368	3536	sbietrcl.exe	96
PID 3536 wrote to memory of 4368	3536	sbietrcl.exe	96

C:\Users\Admin\AppData\Local\Temp\6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00.exe
"C:\Users\Admin\AppData\Local\Temp\6338df20ac1b8f0278c3a3de52472357871c037f2178ee66e91d0aeb7ad11e00.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:4344
- 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:3536
- - 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:4368

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
907KB

MD5
e5e2a5442355b23e07074f67ffff04f2

SHA1
63de96e27c2ee0dc52109185df01695de44b5196

SHA256
15f3c0bc753964eee34ac5d55a7d27a23c5378793b61bf3c967e100003132539

SHA512
74bc16f1ec205945ba8dad00a417d16814d07e991e166171bdd347f25ae9c0aff8b87bf7cb6288d50c1c16d3b1592f1790a2707a3a90a4757251184efc25525b

Download Submit
memory/3536-41-0x0000000074E20000-0x00000000753D1000-memory.dmp

Filesize
5.7MB

Download
memory/3536-34-0x0000000074E20000-0x00000000753D1000-memory.dmp

Filesize
5.7MB

Download
memory/3536-33-0x0000000074E20000-0x00000000753D1000-memory.dmp

Filesize
5.7MB

Download
memory/3536-32-0x0000000074E20000-0x00000000753D1000-memory.dmp

Filesize
5.7MB

Download
memory/4344-19-0x0000000074E20000-0x00000000753D1000-memory.dmp

Filesize
5.7MB

Download
memory/4344-0-0x0000000074E22000-0x0000000074E23000-memory.dmp

Filesize
4KB

Download
memory/4344-20-0x0000000074E20000-0x00000000753D1000-memory.dmp

Filesize
5.7MB

Download
memory/4344-18-0x0000000074E22000-0x0000000074E23000-memory.dmp

Filesize
4KB

Download
memory/4344-31-0x0000000074E20000-0x00000000753D1000-memory.dmp

Filesize
5.7MB

Download
memory/4344-6-0x0000000074E20000-0x00000000753D1000-memory.dmp

Filesize
5.7MB

Download
memory/4344-5-0x0000000074E20000-0x00000000753D1000-memory.dmp

Filesize
5.7MB

Download
memory/4344-2-0x0000000074E20000-0x00000000753D1000-memory.dmp

Filesize
5.7MB

Download
memory/4344-1-0x0000000074E20000-0x00000000753D1000-memory.dmp

Filesize
5.7MB

Download
memory/4368-37-0x0000000000720000-0x0000000000737000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads