remcos | 545403ae8941712ac4f021d5867ac8df35a554d5754192c54da66f7b2a2d4e5f

Analysis

max time kernel
121s
max time network
130s
platform
windows7_x64
resource
win7-20250207-en
resource tags

arch:x64arch:x86image:win7-20250207-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:12

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General

Target

68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.exe
Size

873KB
MD5

2e947ac271b82d291ab63d9f0b16af1c
SHA1

48fbf8c4f8c932e590410c2d3db2178dd331d7fc
SHA256

68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4
SHA512

be806eacd213cb785f89cb9c6ad7bb5f5971e746dc4a5dac84ca7654fe3d8796da3c83dcfef372c32b6b99421e8cf864fc6355adfd3b8fbb2c74ca210fa573f8
SSDEEP

12288:Pp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRzwAY3A1:PpugRNJI1D39dlfGQrFUxwAeA1

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

Executes dropped EXE 2 IoCs

pid	Process
2968	sbietrcl.exe
2484	sbietrcl.exe

Loads dropped DLL 1 IoCs

pid	Process
2708	68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.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-1-5-21-677481364-2238709445-1347953534-1000\Software\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2968 set thread context of 2484	2968	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 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	68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2708	68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.exe
2708	68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.exe
2708	68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.exe
2708	68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.exe
2708	68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.exe
2708	68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.exe
2968	sbietrcl.exe
2968	sbietrcl.exe
2968	sbietrcl.exe
2968	sbietrcl.exe
2968	sbietrcl.exe
2968	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2708	68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.exe
Token: SeDebugPrivilege	2968	sbietrcl.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 2968	2708	68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.exe	30
PID 2708 wrote to memory of 2968	2708	68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.exe	30
PID 2708 wrote to memory of 2968	2708	68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.exe	30
PID 2708 wrote to memory of 2968	2708	68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.exe	30
PID 2968 wrote to memory of 2484	2968	sbietrcl.exe	31
PID 2968 wrote to memory of 2484	2968	sbietrcl.exe	31
PID 2968 wrote to memory of 2484	2968	sbietrcl.exe	31
PID 2968 wrote to memory of 2484	2968	sbietrcl.exe	31
PID 2968 wrote to memory of 2484	2968	sbietrcl.exe	31
PID 2968 wrote to memory of 2484	2968	sbietrcl.exe	31
PID 2968 wrote to memory of 2484	2968	sbietrcl.exe	31
PID 2968 wrote to memory of 2484	2968	sbietrcl.exe	31
PID 2968 wrote to memory of 2484	2968	sbietrcl.exe	31
PID 2968 wrote to memory of 2484	2968	sbietrcl.exe	31

C:\Users\Admin\AppData\Local\Temp\68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.exe
"C:\Users\Admin\AppData\Local\Temp\68461a12fa99132c70d16fe56ad023eec0f3813ac15c52eb407d7422716fa0a4.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:2968
- - 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:2484

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
9ea742a5a87a0189f16bb603628c9d84

SHA1
ae67c06d5f3f9eb14fb5f0dd468c64e7d2cfb781

SHA256
6a347ec325e9f2cefe3faaeea8807f42c8d7c1b6feb58aa6f2b1a411902a8c60

SHA512
0e52b97b2fac9a17b414025d6bd55f596f6444226f8db86d43c12581fc03a3a25e436cd31daeffdbc1cd42eb0fec70969ffe4c7a71d9951d802ad36a758cabc8

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab86DC.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
879KB

MD5
f414cb50b25b551f64cd33af16723654

SHA1
24a332ee3307dfecf76ffc17f7ac5346c0fa4fe3

SHA256
25010af10ac4f6c897b7477c33ca9286128aa8da88f72f0c0a9a6ae0146e35af

SHA512
8ed6d7dad47593430ab2283eb53a179692a9ce6382420af6f667ffc7151be9abd0f8a027a9b4612b5b3bea1687cfecac74a550fe5d6e6c3edd81bee67c3701d6

Download Submit
memory/2484-46-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2484-44-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2484-47-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2484-49-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2484-50-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2484-51-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2484-54-0x0000000000080000-0x0000000000097000-memory.dmp

Filesize
92KB

Download
memory/2708-25-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/2708-32-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

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

Filesize
4KB

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

Filesize
5.7MB

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

Filesize
5.7MB

Download
memory/2708-9-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/2708-1-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/2968-43-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/2968-33-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/2968-42-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download
memory/2968-57-0x0000000074020000-0x00000000745CB000-memory.dmp

Filesize
5.7MB

Download