remcos | 5656064ae4d3c302be4f376131bce57fa83ba30e94c329f33adb91836d7f4bf8

Analysis

max time kernel
103s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20250313-en
resource tags

arch:x64arch:x86image:win10v2004-20250313-enlocale:en-usos:windows10-2004-x64system
submitted
22/03/2025, 06:25

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General

Target

34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
Size

910KB
MD5

78b459487d77b2af6ddfcc1e82e86832
SHA1

4bd3949d2f1704e5d50befa9998631e59a29fb4e
SHA256

34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7
SHA512

0b719d230d6e2dc90723f7cfcb54e934e8e61d28dc7e432053a881fd432c8a9dad4b3ac3949c984649b20a6ffa5db32a15d56d04da5f51638ade64a653a1a863
SSDEEP

12288:7p+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRz9Ma:7pugRNJI1D39dlfGQrFUx9Ma

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

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-1-5-21-3446877943-4095308722-756223633-1000\Control Panel\International\Geo\Nation	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe

Executes dropped EXE 2 IoCs

pid	Process
5464	sbietrcl.exe
4860	sbietrcl.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-1-5-21-3446877943-4095308722-756223633-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5464 set thread context of 4860	5464	sbietrcl.exe	95

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	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
3580	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
3580	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
3580	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
3580	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
3580	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
3580	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
5464	sbietrcl.exe
5464	sbietrcl.exe
5464	sbietrcl.exe
5464	sbietrcl.exe
5464	sbietrcl.exe
5464	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3580	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
Token: SeDebugPrivilege	5464	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3580 wrote to memory of 5464	3580	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe	93
PID 3580 wrote to memory of 5464	3580	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe	93
PID 3580 wrote to memory of 5464	3580	34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe	93
PID 5464 wrote to memory of 4860	5464	sbietrcl.exe	95
PID 5464 wrote to memory of 4860	5464	sbietrcl.exe	95
PID 5464 wrote to memory of 4860	5464	sbietrcl.exe	95
PID 5464 wrote to memory of 4860	5464	sbietrcl.exe	95
PID 5464 wrote to memory of 4860	5464	sbietrcl.exe	95
PID 5464 wrote to memory of 4860	5464	sbietrcl.exe	95
PID 5464 wrote to memory of 4860	5464	sbietrcl.exe	95
PID 5464 wrote to memory of 4860	5464	sbietrcl.exe	95
PID 5464 wrote to memory of 4860	5464	sbietrcl.exe	95

C:\Users\Admin\AppData\Local\Temp\34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.exe
"C:\Users\Admin\AppData\Local\Temp\34a292bd76e629b9fd512f94ba2f6bea582de6e9f7cdc0129c233fa4df357ab7.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:3580
- 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:5464
- - 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:4860

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
918KB

MD5
f7783f677d9e2044fca9c593b76bdb5a

SHA1
8434b5e3e9e57d85e240f83eb8da6589b2866bbb

SHA256
79910de08cb21a9468df155cb076d10eafbc96518ca89a0d93e9352eae419a44

SHA512
cad3bc61cfc55a9ea7c04b34d4a3f20c39b3ef840e2fecfa101b12c2e0b31d4e96a5d2a6cdcdd69495c1a60a7ac1e98ddce697a19edf90a2d38fb251c1a99603

Download Submit
memory/3580-17-0x0000000075090000-0x0000000075641000-memory.dmp

Filesize
5.7MB

Download
memory/3580-28-0x0000000075090000-0x0000000075641000-memory.dmp

Filesize
5.7MB

Download
memory/3580-3-0x0000000075090000-0x0000000075641000-memory.dmp

Filesize
5.7MB

Download
memory/3580-4-0x0000000075090000-0x0000000075641000-memory.dmp

Filesize
5.7MB

Download
memory/3580-16-0x0000000075092000-0x0000000075093000-memory.dmp

Filesize
4KB

Download
memory/3580-0-0x0000000075092000-0x0000000075093000-memory.dmp

Filesize
4KB

Download
memory/3580-1-0x0000000075090000-0x0000000075641000-memory.dmp

Filesize
5.7MB

Download
memory/3580-2-0x0000000075090000-0x0000000075641000-memory.dmp

Filesize
5.7MB

Download
memory/4860-34-0x0000000000560000-0x0000000000577000-memory.dmp

Filesize
92KB

Download
memory/5464-30-0x0000000075090000-0x0000000075641000-memory.dmp

Filesize
5.7MB

Download
memory/5464-29-0x0000000075090000-0x0000000075641000-memory.dmp

Filesize
5.7MB

Download
memory/5464-32-0x0000000075090000-0x0000000075641000-memory.dmp

Filesize
5.7MB

Download
memory/5464-31-0x0000000075090000-0x0000000075641000-memory.dmp

Filesize
5.7MB

Download
memory/5464-38-0x0000000075090000-0x0000000075641000-memory.dmp

Filesize
5.7MB

Download