remcos | 894a461e0d709023ba6ec45f748b38a79ae12cf398702244ef2ffa93dd644133

Analysis

max time kernel
140s
max time network
156s
platform
windows7_x64
resource
win7-20250207-en
resource tags

arch:x64arch:x86image:win7-20250207-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:15

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General

Target

acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.exe
Size

864KB
MD5

75cceff4c1f8fd2c9a73bd523df79b43
SHA1

d035fc55c6045ce22945080c2f50c21237aafe74
SHA256

acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768
SHA512

e0cc4ac1d987efd28d4029b2c67159cccf7c6c07b07c7ffaceb480f78c4db2145287b6ef418ae93548f6d67a16780eb695581e882cd0772d533298ed3dcb1c3d
SSDEEP

12288:sp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRzwAY3/:spugRNJI1D39dlfGQrFUxwAe/

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
2984	sbietrcl.exe
2540	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2708	acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.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-1-5-21-677481364-2238709445-1347953534-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2984 set thread context of 2540	2984	sbietrcl.exe	31

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	acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.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
2708	acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.exe
2708	acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.exe
2708	acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.exe
2708	acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.exe
2708	acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.exe
2708	acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.exe
2984	sbietrcl.exe
2984	sbietrcl.exe
2984	sbietrcl.exe
2984	sbietrcl.exe
2984	sbietrcl.exe
2984	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2708	acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.exe
Token: SeDebugPrivilege	2984	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2540	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 2984	2708	acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.exe	30
PID 2708 wrote to memory of 2984	2708	acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.exe	30
PID 2708 wrote to memory of 2984	2708	acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.exe	30
PID 2708 wrote to memory of 2984	2708	acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.exe	30
PID 2984 wrote to memory of 2540	2984	sbietrcl.exe	31
PID 2984 wrote to memory of 2540	2984	sbietrcl.exe	31
PID 2984 wrote to memory of 2540	2984	sbietrcl.exe	31
PID 2984 wrote to memory of 2540	2984	sbietrcl.exe	31
PID 2984 wrote to memory of 2540	2984	sbietrcl.exe	31
PID 2984 wrote to memory of 2540	2984	sbietrcl.exe	31
PID 2984 wrote to memory of 2540	2984	sbietrcl.exe	31
PID 2984 wrote to memory of 2540	2984	sbietrcl.exe	31
PID 2984 wrote to memory of 2540	2984	sbietrcl.exe	31
PID 2984 wrote to memory of 2540	2984	sbietrcl.exe	31

C:\Users\Admin\AppData\Local\Temp\acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.exe
"C:\Users\Admin\AppData\Local\Temp\acde31a22deb5a8a7cc7420109f2224c007039ecb0733d25f0fd83c15a465768.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:2708
- 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:2984
- - 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:2540

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\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
4ba77107e655bacce33b227dd3cd7393

SHA1
f7f9ce12a8d4f71674ef9cc20411e53179fd14ab

SHA256
511e91a05ddfd284e0ff880457427029cf1ddaca0de70d0834584cf8bed7e87b

SHA512
0a32cf7302166bc9d675d2d49ae8d08036a8c5371888ba3fab64d8250856cd564a9d5fcf0f585191f5ca5efae88d6766cfb223ea43a146c6df548b71034cbe02

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab820B.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
870KB

MD5
a445cde8d8d16bc329c7e6e7c3cb6542

SHA1
715359e39b8e87a799af4b757ffe7ead9d7751e3

SHA256
d4f27d15185fa2fc62d4c95ebc54aed81763eada14eda05b08f4a167e2dc265a

SHA512
0c0b88141319309b0ecddd9f55716e59ae1af93cc932d1bbc8ea45076c1020add5c8f0fe21b92255ef67147f555097ff8357bcf63cac683180f928b54b506528

Download Submit
memory/2540-59-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2540-46-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2540-52-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2540-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2540-61-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2540-55-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2540-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2540-50-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2540-48-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2540-56-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2540-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2708-12-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/2708-13-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/2708-10-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/2708-11-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/2708-31-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/2708-0-0x0000000074021000-0x0000000074022000-memory.dmp

Filesize
4KB

Download
memory/2984-32-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/2984-42-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/2984-43-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/2984-60-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/2984-33-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download