remcos | 4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5

General

Target

4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5.exe
Size

2.2MB
MD5

854c20bcb3515b3d18a1d01093688b3b
SHA1

ae43f32f157b5809ae3ce40c90e5fd5448716e52
SHA256

4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5
SHA512

fdbad0291f20acab0853e121029d685d0ea627733bf086a97c81c059b8d6bf72363500d29f7de0aaaa6a83dfedf5b9a2ade69163e4427d3e96b7461756c11d5b
SSDEEP

24576:GD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJJz5/t:Gp7E+QrFUBgq2Sn7/t

Score

10^/10

remcos host discovery persistence rat spyware stealer

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

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

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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5.exe

Executes dropped EXE 2 IoCs

pid	Process
116	sbietrcl.exe
4624	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-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 116 set thread context of 4624	116	sbietrcl.exe	88

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	4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5.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
3140	4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5.exe
3140	4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5.exe
3140	4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5.exe
3140	4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5.exe
3140	4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5.exe
3140	4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5.exe
116	sbietrcl.exe
116	sbietrcl.exe
116	sbietrcl.exe
116	sbietrcl.exe
116	sbietrcl.exe
116	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3140	4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5.exe
Token: SeDebugPrivilege	116	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4624	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3140 wrote to memory of 116	3140	4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5.exe	86
PID 3140 wrote to memory of 116	3140	4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5.exe	86
PID 3140 wrote to memory of 116	3140	4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5.exe	86
PID 116 wrote to memory of 4624	116	sbietrcl.exe	88
PID 116 wrote to memory of 4624	116	sbietrcl.exe	88
PID 116 wrote to memory of 4624	116	sbietrcl.exe	88
PID 116 wrote to memory of 4624	116	sbietrcl.exe	88
PID 116 wrote to memory of 4624	116	sbietrcl.exe	88
PID 116 wrote to memory of 4624	116	sbietrcl.exe	88
PID 116 wrote to memory of 4624	116	sbietrcl.exe	88
PID 116 wrote to memory of 4624	116	sbietrcl.exe	88
PID 116 wrote to memory of 4624	116	sbietrcl.exe	88

C:\Users\Admin\AppData\Local\Temp\4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5.exe
"C:\Users\Admin\AppData\Local\Temp\4ebb9daf94dffe8a78e21b6434b3f46dee4f7a1233eabcc13f1b48e9be305fb5.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:3140
- 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:116
- - 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:4624

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
2.2MB

MD5
429a8cf0a1d59cc36f11be511011bf4e

SHA1
bdfb343842b929b2c7df09a3ad93cafdd156ae1e

SHA256
c85ac9863c475a8d3688f12f47558648391cb9e793a2e0771ee5e136ebb43fd2

SHA512
e6c09572738d37f2dff7e705bcf3589e1a65f892054a45568f36c338b4ea7504e7403f5c25fb7bfbe28100e2356c2c2a34573c4ad114d6cea8fa45f02cb3aa3a

Download Submit
memory/116-44-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/116-32-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/116-31-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/116-30-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/116-29-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3140-16-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3140-1-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3140-28-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3140-0-0x0000000074F62000-0x0000000074F63000-memory.dmp

Filesize
4KB

Download
memory/3140-4-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3140-3-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3140-2-0x0000000074F60000-0x0000000075511000-memory.dmp

Filesize
5.7MB

Download
memory/3140-17-0x0000000074F62000-0x0000000074F63000-memory.dmp

Filesize
4KB

Download
memory/4624-33-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4624-37-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4624-40-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4624-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4624-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4624-36-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4624-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads