remcos | 5de218dd00c5b6536a8ea373bbe9b9f2079f788a113b847fbd5c39932170a6e6

Analysis

max time kernel
140s
max time network
151s
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, 06:33

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General

Target

d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086.exe
Size

880KB
MD5

54fab8b19cff15f0431e5fb1415f5e35
SHA1

22df553be076382ad84097e51a11ceea6110691f
SHA256

d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086
SHA512

f2109f32d7e82b9d29c4e2f66281c758d8c397d71df0de4f775aeac69cd38962676a6c38f5ac606d579c651a160570a25259aa08f56d4f866c3234c4def42d62
SSDEEP

12288:Sp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRzwAY3Ar:SpugRNJI1D39dlfGQrFUxwAeAr

Score

10^/10

remcos host discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

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	d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086.exe

Executes dropped EXE 2 IoCs

pid	Process
4532	sbietrcl.exe
4624	sbietrcl.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

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"	d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4532 set thread context of 4624	4532	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 3 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	d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
1576	d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086.exe
1576	d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086.exe
1576	d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086.exe
1576	d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086.exe
1576	d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086.exe
1576	d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086.exe
4532	sbietrcl.exe
4532	sbietrcl.exe
4532	sbietrcl.exe
4532	sbietrcl.exe
4532	sbietrcl.exe
4532	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1576	d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086.exe
Token: SeDebugPrivilege	4532	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4624	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1576 wrote to memory of 4532	1576	d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086.exe	94
PID 1576 wrote to memory of 4532	1576	d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086.exe	94
PID 1576 wrote to memory of 4532	1576	d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086.exe	94
PID 4532 wrote to memory of 4624	4532	sbietrcl.exe	96
PID 4532 wrote to memory of 4624	4532	sbietrcl.exe	96
PID 4532 wrote to memory of 4624	4532	sbietrcl.exe	96
PID 4532 wrote to memory of 4624	4532	sbietrcl.exe	96
PID 4532 wrote to memory of 4624	4532	sbietrcl.exe	96
PID 4532 wrote to memory of 4624	4532	sbietrcl.exe	96
PID 4532 wrote to memory of 4624	4532	sbietrcl.exe	96
PID 4532 wrote to memory of 4624	4532	sbietrcl.exe	96
PID 4532 wrote to memory of 4624	4532	sbietrcl.exe	96

C:\Users\Admin\AppData\Local\Temp\d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086.exe
"C:\Users\Admin\AppData\Local\Temp\d1a0b78620011cdf2da572aca494dc7841cb4ca79d073b671d522434894ab086.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:1576
- 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:4532
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:4624

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

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
889KB

MD5
e4d1daec5a329e9a4c4153605574d3fe

SHA1
c217441ca83e6c0ef33016e383bf4620c711ddac

SHA256
89aea68a97828d4745684de70974e88ce39f37e391ec37768bfbe00df34ccf6d

SHA512
15130e03fde90366d98c948b5636f7ac6fb8e0cd730bb6ccdb27e8ecbe9d87facea1aaba04214737c8538c95e2d93c4467b739ae8dbb5927b042d47fbcdf6609

Download Submit
memory/1576-28-0x0000000075170000-0x0000000075721000-memory.dmp

Filesize
5.7MB

Download
memory/1576-2-0x0000000075170000-0x0000000075721000-memory.dmp

Filesize
5.7MB

Download
memory/1576-3-0x0000000075170000-0x0000000075721000-memory.dmp

Filesize
5.7MB

Download
memory/1576-4-0x0000000075170000-0x0000000075721000-memory.dmp

Filesize
5.7MB

Download
memory/1576-16-0x0000000075172000-0x0000000075173000-memory.dmp

Filesize
4KB

Download
memory/1576-17-0x0000000075170000-0x0000000075721000-memory.dmp

Filesize
5.7MB

Download
memory/1576-1-0x0000000075170000-0x0000000075721000-memory.dmp

Filesize
5.7MB

Download
memory/1576-0-0x0000000075172000-0x0000000075173000-memory.dmp

Filesize
4KB

Download
memory/4532-29-0x0000000075170000-0x0000000075721000-memory.dmp

Filesize
5.7MB

Download
memory/4532-30-0x0000000075170000-0x0000000075721000-memory.dmp

Filesize
5.7MB

Download
memory/4532-31-0x0000000075170000-0x0000000075721000-memory.dmp

Filesize
5.7MB

Download
memory/4532-32-0x0000000075170000-0x0000000075721000-memory.dmp

Filesize
5.7MB

Download
memory/4532-44-0x0000000075170000-0x0000000075721000-memory.dmp

Filesize
5.7MB

Download
memory/4624-33-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4624-36-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4624-37-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4624-40-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4624-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4624-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4624-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download