remcos | 01ffe9d6f323a1dafd7dbe75338596cb03cdbe970cdc964543ae03006c1ece85

Analysis

max time kernel
45s
max time network
70s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
22/03/2025, 19:00

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General

Target

1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
Size

1.8MB
MD5

793d4f49460d39ce07b9b1f4fbae913f
SHA1

0f673b4d57a55fe5c7ad9f575cb04e31a1fd2ac7
SHA256

1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32
SHA512

7dc26a5651a95fc2c23174d6049bdb24e456f53fb08654ddf4984ee26d461b3c4186b70e3eb700088e9098a2d1449c77e5023bb872b933ed50cab7ed1e48ab71
SSDEEP

24576:PD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6J:PF+QrFUBgq25eKu6J

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Host

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-1-5-21-308834014-1004923324-1191300197-1000\Control Panel\International\Geo\Nation	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe

Executes dropped EXE 2 IoCs

pid	Process
4220	sbietrcl.exe
4724	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-1-5-21-308834014-1004923324-1191300197-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4220 set thread context of 4724	4220	sbietrcl.exe	93

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	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2524	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
2524	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
2524	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
2524	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
2524	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
2524	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
4220	sbietrcl.exe
4220	sbietrcl.exe
4220	sbietrcl.exe
4220	sbietrcl.exe
4220	sbietrcl.exe
4220	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2524	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
Token: SeDebugPrivilege	4220	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 4220	2524	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe	92
PID 2524 wrote to memory of 4220	2524	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe	92
PID 2524 wrote to memory of 4220	2524	1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe	92
PID 4220 wrote to memory of 4724	4220	sbietrcl.exe	93
PID 4220 wrote to memory of 4724	4220	sbietrcl.exe	93
PID 4220 wrote to memory of 4724	4220	sbietrcl.exe	93
PID 4220 wrote to memory of 4724	4220	sbietrcl.exe	93
PID 4220 wrote to memory of 4724	4220	sbietrcl.exe	93
PID 4220 wrote to memory of 4724	4220	sbietrcl.exe	93
PID 4220 wrote to memory of 4724	4220	sbietrcl.exe	93
PID 4220 wrote to memory of 4724	4220	sbietrcl.exe	93
PID 4220 wrote to memory of 4724	4220	sbietrcl.exe	93

C:\Users\Admin\AppData\Local\Temp\1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.exe
"C:\Users\Admin\AppData\Local\Temp\1dc47906f130f9bcf0c314005fc34842a4c89f93b18acfbc2fcd8ff856ceca32.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:2524
- 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:4220
- - 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:4724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

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
1.8MB

MD5
8c3e3a114601c8aa6c9627cbbacd5b97

SHA1
aaa21dbea676ef0d820f4a3249968e1e6a1327a6

SHA256
e59f185d9217bb6d9abb8d009a839d98d01ef6276ec4f625d5c14ac108eb3880

SHA512
0a56505871a2e06ea9df757ceb055bbb265f513e602d0eba22aa46fdf6c0029c46616e2ce645a729fe2a3bd67b2aa334c38da5103fc0605ecb8b2489149ad916

Download Submit
memory/2524-19-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/2524-31-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/2524-5-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/2524-6-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/2524-18-0x0000000075312000-0x0000000075313000-memory.dmp

Filesize
4KB

Download
memory/2524-0-0x0000000075312000-0x0000000075313000-memory.dmp

Filesize
4KB

Download
memory/2524-1-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/2524-2-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/4220-30-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/4220-32-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/4220-34-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/4220-33-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/4220-41-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/4724-37-0x0000000000530000-0x0000000000547000-memory.dmp

Filesize
92KB

Download