remcos | 8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadf

General

Target

8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadfN.exe
Size

2.2MB
MD5

d8678cb7b1d3332b939c548edb8f4e10
SHA1

30ed6e580a8dc070b849c97460d7384dd94af766
SHA256

8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadf
SHA512

ce354076836a47fd48cecd802736a6392d1ac8fc22291f579434d7dfc9b4d5f1bd307974dbd44a198146ed0b033f95e3e35f39ef2958804b6d011d26767b00fd
SSDEEP

24576:8D39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJJjR:8p7E+QrFUBgq2Sn9R

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadfN.exe

Executes dropped EXE 2 IoCs

pid	Process
2156	sbietrcl.exe
1336	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-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadfN.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2156 set thread context of 1336	2156	sbietrcl.exe	83

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	8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadfN.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
4564	8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadfN.exe
4564	8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadfN.exe
4564	8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadfN.exe
4564	8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadfN.exe
4564	8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadfN.exe
4564	8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadfN.exe
2156	sbietrcl.exe
2156	sbietrcl.exe
2156	sbietrcl.exe
2156	sbietrcl.exe
2156	sbietrcl.exe
2156	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4564	8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadfN.exe
Token: SeDebugPrivilege	2156	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1336	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4564 wrote to memory of 2156	4564	8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadfN.exe	82
PID 4564 wrote to memory of 2156	4564	8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadfN.exe	82
PID 4564 wrote to memory of 2156	4564	8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadfN.exe	82
PID 2156 wrote to memory of 1336	2156	sbietrcl.exe	83
PID 2156 wrote to memory of 1336	2156	sbietrcl.exe	83
PID 2156 wrote to memory of 1336	2156	sbietrcl.exe	83
PID 2156 wrote to memory of 1336	2156	sbietrcl.exe	83
PID 2156 wrote to memory of 1336	2156	sbietrcl.exe	83
PID 2156 wrote to memory of 1336	2156	sbietrcl.exe	83
PID 2156 wrote to memory of 1336	2156	sbietrcl.exe	83
PID 2156 wrote to memory of 1336	2156	sbietrcl.exe	83
PID 2156 wrote to memory of 1336	2156	sbietrcl.exe	83

C:\Users\Admin\AppData\Local\Temp\8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadfN.exe
"C:\Users\Admin\AppData\Local\Temp\8460bf2d461d7bd4a713b86b37ac381cb71d57f967f01bc02cef7be71897fadfN.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:4564
- 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:2156
- - 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:1336

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
6fa2504e4f785b1a20a4efa068fd91cf

SHA1
a7abff3dbc6fbb21f8bf53e0b8a376bb2315e8b5

SHA256
bf0f2fe626f86543887136de94bc69005fc7653103e013c01bb83453e2260b76

SHA512
82b34510a976257fe82f2579c20e4e72c74a9dd210b639a0286146f2b9aadfd3c9254d2e9e7f637ae9c6d531cf4e8246d6cab924e370ca539cedd6e53256e76c

Download Submit
memory/1336-33-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1336-47-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1336-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1336-37-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1336-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1336-40-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1336-36-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2156-30-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/2156-29-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/2156-31-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/2156-32-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/2156-28-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/2156-44-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/4564-0-0x0000000075072000-0x0000000075073000-memory.dmp

Filesize
4KB

Download
memory/4564-27-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/4564-16-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/4564-15-0x0000000075072000-0x0000000075073000-memory.dmp

Filesize
4KB

Download
memory/4564-3-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/4564-2-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download
memory/4564-1-0x0000000075070000-0x0000000075621000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads