remcos | fd198cf3ef764ffa17e7bd465d666057804a25ed5c6061074c0de7b6df43a667

Analysis

max time kernel
139s
max time network
151s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:09

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General

Target

2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
Size

1.7MB
MD5

af3051e752cce78b57735f04d7d5c848
SHA1

e64d7999e191b361d85634cb9144bad9026d070d
SHA256

2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82
SHA512

113ccb90d689343e5512975e5c277dd6bb3aa5422cfdc4ccffd85ca3831277fd4c0a5559cce1c6531c88691cb2172287820975f435ebb737a6f72baf92a06613
SSDEEP

24576:DD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjos:Dp7E+QrFUBgq2x

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

Executes dropped EXE 2 IoCs

pid	Process
2900	sbietrcl.exe
2828	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
1800	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2900 set thread context of 2828	2900	sbietrcl.exe	32

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	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.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
1800	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
1800	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
1800	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
1800	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
1800	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
1800	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
2900	sbietrcl.exe
2900	sbietrcl.exe
2900	sbietrcl.exe
2900	sbietrcl.exe
2900	sbietrcl.exe
2900	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1800	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
Token: SeDebugPrivilege	2900	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2828	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 2900	1800	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe	31
PID 1800 wrote to memory of 2900	1800	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe	31
PID 1800 wrote to memory of 2900	1800	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe	31
PID 1800 wrote to memory of 2900	1800	2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe	31
PID 2900 wrote to memory of 2828	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2828	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2828	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2828	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2828	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2828	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2828	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2828	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2828	2900	sbietrcl.exe	32
PID 2900 wrote to memory of 2828	2900	sbietrcl.exe	32

C:\Users\Admin\AppData\Local\Temp\2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe
"C:\Users\Admin\AppData\Local\Temp\2fd4eb3e27778484c6c7d957a980c00563b9e5b83750393d08aa39154a7cff82.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1800
- 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:2900
- - 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:2828

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

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\Local\Temp\CabEF5E.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
1.7MB

MD5
212c2b1c5086617a04357fbb40c6318b

SHA1
8d59f4c2fcfa824a0e48cbf3e5426259987ab481

SHA256
5e11a7b08b629938576c14fc3d5e570cd8fcd777ec220e3efb0b0293e63af28f

SHA512
dee3db0e620c095ee5f8888f30c290b57085a0f4a41e49af45e55b07b5f5ed39b1b5505f7d333d63215d391ef7327a8262b34e125a25332d68690f36ff737a41

Download Submit
memory/1800-30-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/1800-1-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/1800-2-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/1800-10-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/1800-11-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/1800-23-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/1800-0-0x0000000074261000-0x0000000074262000-memory.dmp

Filesize
4KB

Download
memory/2828-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2828-51-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2828-66-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2828-63-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2828-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2828-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2828-53-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2828-62-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2828-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2828-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2828-58-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2828-56-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2900-57-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/2900-32-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/2900-31-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download
memory/2900-40-0x0000000074260000-0x000000007480B000-memory.dmp

Filesize
5.7MB

Download