remcos | 136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94

General

Target

136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94.exe
Size

1020KB
MD5

cf267581be8473ea55c73b833a6e0dad
SHA1

b1c43239677655b821f290dbbf1be560fbbeaca9
SHA256

136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94
SHA512

3d65fb0a6536977dc30a545b018f02ebd6be27c3f4da34fac6ed55716ff83996e9f493f2497ce6f8b8e0a71a84c7b79dad3f4e3ca40e84b723bdda4592583938
SSDEEP

12288:1feDOa9rDeYSorINpj5XqkJD0QrOod7XxlW91RRep+rgRNyA55IxJ2DWzzY8:ED39v74lfGQrFUspugRNJI2DWzz9

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
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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94.exe

Executes dropped EXE 2 IoCs

pid	Process
3852	sbietrcl.exe
3076	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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3852 set thread context of 3076	3852	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	sbietrcl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
3832	136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94.exe
3832	136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94.exe
3832	136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94.exe
3832	136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94.exe
3832	136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94.exe
3832	136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94.exe
3852	sbietrcl.exe
3852	sbietrcl.exe
3852	sbietrcl.exe
3852	sbietrcl.exe
3852	sbietrcl.exe
3852	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3832	136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94.exe
Token: SeDebugPrivilege	3852	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3076	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3832 wrote to memory of 3852	3832	136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94.exe	82
PID 3832 wrote to memory of 3852	3832	136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94.exe	82
PID 3832 wrote to memory of 3852	3832	136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94.exe	82
PID 3852 wrote to memory of 3076	3852	sbietrcl.exe	83
PID 3852 wrote to memory of 3076	3852	sbietrcl.exe	83
PID 3852 wrote to memory of 3076	3852	sbietrcl.exe	83
PID 3852 wrote to memory of 3076	3852	sbietrcl.exe	83
PID 3852 wrote to memory of 3076	3852	sbietrcl.exe	83
PID 3852 wrote to memory of 3076	3852	sbietrcl.exe	83
PID 3852 wrote to memory of 3076	3852	sbietrcl.exe	83
PID 3852 wrote to memory of 3076	3852	sbietrcl.exe	83
PID 3852 wrote to memory of 3076	3852	sbietrcl.exe	83

C:\Users\Admin\AppData\Local\Temp\136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94.exe
"C:\Users\Admin\AppData\Local\Temp\136ef22d5bfdda144756cd42f15a285b46af11a95f823bfe13f7993c72e23e94.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:3832
- 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:3852
- - 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:3076

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

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Downloads

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

Filesize
1.0MB

MD5
48480981e3f6196349ae5404303521d1

SHA1
373704dd9a0bc7959d7239201eb4d8f41bc10e96

SHA256
2a82d4a5fe5e00c4445ecc3408705e4732fad0bb06b971d36bdd543b95034069

SHA512
7c9703016a31f0a454be37ea6f7883f842906dc62fdd712d3ae5677a573273409c6dcded55a15593be7ddbe1558cda696f358baed09f479c3be3f674285abc1a

Download Submit
memory/3076-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3076-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3076-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3076-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3076-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3076-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3076-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3832-18-0x0000000074EC2000-0x0000000074EC3000-memory.dmp

Filesize
4KB

Download
memory/3832-30-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/3832-19-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/3832-0-0x0000000074EC2000-0x0000000074EC3000-memory.dmp

Filesize
4KB

Download
memory/3832-6-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/3832-5-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/3832-2-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/3832-1-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/3852-32-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/3852-31-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/3852-33-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/3852-34-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download
memory/3852-46-0x0000000074EC0000-0x0000000075471000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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