remcos | e5d28ec84e4b5f023e3f386cf7e0776850b67e2bad1299413885f3fdd757f58c

Analysis

max time kernel
140s
max time network
157s
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, 06:18

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General

Target

e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
Size

1.7MB
MD5

acec4e3a3a6a8a6ce6aa2cd917bfb911
SHA1

87dbf1d948f71fb4b62b1c18289df01637bf76b9
SHA256

e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9
SHA512

2eecb7e1ebd091062edae5619e3850ed763432a9024a01046e63c3cfd8fef3f74f2e046e00959da67fc02aebb128bfef479600955a0153966ae84a37b3a877cc
SSDEEP

24576:hD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjom7:hp7E+QrFUBgq2v7

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-1-5-21-3975168204-1612096350-4002976354-1000\Control Panel\International\Geo\Nation	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe

Executes dropped EXE 2 IoCs

pid	Process
5488	sbietrcl.exe
2268	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-1-5-21-3975168204-1612096350-4002976354-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5488 set thread context of 2268	5488	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	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.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
5804	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
5804	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
5804	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
5804	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
5804	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
5804	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
5488	sbietrcl.exe
5488	sbietrcl.exe
5488	sbietrcl.exe
5488	sbietrcl.exe
5488	sbietrcl.exe
5488	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5804	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
Token: SeDebugPrivilege	5488	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2268	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 5804 wrote to memory of 5488	5804	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe	94
PID 5804 wrote to memory of 5488	5804	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe	94
PID 5804 wrote to memory of 5488	5804	e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe	94
PID 5488 wrote to memory of 2268	5488	sbietrcl.exe	96
PID 5488 wrote to memory of 2268	5488	sbietrcl.exe	96
PID 5488 wrote to memory of 2268	5488	sbietrcl.exe	96
PID 5488 wrote to memory of 2268	5488	sbietrcl.exe	96
PID 5488 wrote to memory of 2268	5488	sbietrcl.exe	96
PID 5488 wrote to memory of 2268	5488	sbietrcl.exe	96
PID 5488 wrote to memory of 2268	5488	sbietrcl.exe	96
PID 5488 wrote to memory of 2268	5488	sbietrcl.exe	96
PID 5488 wrote to memory of 2268	5488	sbietrcl.exe	96

C:\Users\Admin\AppData\Local\Temp\e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.exe
"C:\Users\Admin\AppData\Local\Temp\e740e379c5b6d33ab42fea238735745f5965d78dfbca807496686cd94cfa57b9.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:5804
- 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:5488
- - 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:2268

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
1.7MB

MD5
9c8ec939952f3be17e352f123b84e108

SHA1
3b12dc051bfd5b7e8e26e47eb26476970a481e33

SHA256
2b750b394c5c28b8e38032e083715a4354e634a2077ef744267daa0ef3324c74

SHA512
65787f1e16ef525c6cfa1630562b5e96cb9c81299c71e8e1eec99fb27c93814023f62d673c77cc961a6d6b3c2aaaa9a95113f2dfe6b137d605d3b0a0c092c030

Download Submit
memory/2268-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2268-33-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2268-36-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2268-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2268-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2268-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2268-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/5488-29-0x00000000748C0000-0x0000000074E71000-memory.dmp

Filesize
5.7MB

Download
memory/5488-30-0x00000000748C0000-0x0000000074E71000-memory.dmp

Filesize
5.7MB

Download
memory/5488-44-0x00000000748C0000-0x0000000074E71000-memory.dmp

Filesize
5.7MB

Download
memory/5488-32-0x00000000748C0000-0x0000000074E71000-memory.dmp

Filesize
5.7MB

Download
memory/5488-31-0x00000000748C0000-0x0000000074E71000-memory.dmp

Filesize
5.7MB

Download
memory/5804-16-0x00000000748C2000-0x00000000748C3000-memory.dmp

Filesize
4KB

Download
memory/5804-28-0x00000000748C0000-0x0000000074E71000-memory.dmp

Filesize
5.7MB

Download
memory/5804-17-0x00000000748C0000-0x0000000074E71000-memory.dmp

Filesize
5.7MB

Download
memory/5804-0-0x00000000748C2000-0x00000000748C3000-memory.dmp

Filesize
4KB

Download
memory/5804-4-0x00000000748C0000-0x0000000074E71000-memory.dmp

Filesize
5.7MB

Download
memory/5804-3-0x00000000748C0000-0x0000000074E71000-memory.dmp

Filesize
5.7MB

Download
memory/5804-2-0x00000000748C0000-0x0000000074E71000-memory.dmp

Filesize
5.7MB

Download
memory/5804-1-0x00000000748C0000-0x0000000074E71000-memory.dmp

Filesize
5.7MB

Download