remcos | 1731c2d1843b004c1a5c7c21b2eb89530a47ab8d72319b1a3fd4a9ae3e237d78

General

Target

9f3af8ec4639e404895b10e9b9a59440N.exe
Size

2.0MB
MD5

9f3af8ec4639e404895b10e9b9a59440
SHA1

539cc1d9970dad430090fa13a55c12ada6886950
SHA256

1731c2d1843b004c1a5c7c21b2eb89530a47ab8d72319b1a3fd4a9ae3e237d78
SHA512

f72fbf4234e8ccd932b37487a9d90ade6972928a21987066addc2b6de9d6eb4a47ca225ae54b0170e84ac448ad9607969af2a2d63b5d94fb06f41e25eb34fdfd
SSDEEP

24576:KD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPj8/j73AneLww5:Kp7E+QrFUBgq2q

Score

10^/10

remcos host credential_access 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
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	9f3af8ec4639e404895b10e9b9a59440N.exe

Executes dropped EXE 2 IoCs

pid	Process
4168	sbietrcl.exe
2608	sbietrcl.exe

Reads user/profile data of web browsers 2 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

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-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	9f3af8ec4639e404895b10e9b9a59440N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4168 set thread context of 2608	4168	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 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	9f3af8ec4639e404895b10e9b9a59440N.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
636	9f3af8ec4639e404895b10e9b9a59440N.exe
636	9f3af8ec4639e404895b10e9b9a59440N.exe
636	9f3af8ec4639e404895b10e9b9a59440N.exe
636	9f3af8ec4639e404895b10e9b9a59440N.exe
636	9f3af8ec4639e404895b10e9b9a59440N.exe
636	9f3af8ec4639e404895b10e9b9a59440N.exe
4168	sbietrcl.exe
4168	sbietrcl.exe
4168	sbietrcl.exe
4168	sbietrcl.exe
4168	sbietrcl.exe
4168	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	636	9f3af8ec4639e404895b10e9b9a59440N.exe
Token: SeDebugPrivilege	4168	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2608	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 636 wrote to memory of 4168	636	9f3af8ec4639e404895b10e9b9a59440N.exe	93
PID 636 wrote to memory of 4168	636	9f3af8ec4639e404895b10e9b9a59440N.exe	93
PID 636 wrote to memory of 4168	636	9f3af8ec4639e404895b10e9b9a59440N.exe	93
PID 4168 wrote to memory of 2608	4168	sbietrcl.exe	95
PID 4168 wrote to memory of 2608	4168	sbietrcl.exe	95
PID 4168 wrote to memory of 2608	4168	sbietrcl.exe	95
PID 4168 wrote to memory of 2608	4168	sbietrcl.exe	95
PID 4168 wrote to memory of 2608	4168	sbietrcl.exe	95
PID 4168 wrote to memory of 2608	4168	sbietrcl.exe	95
PID 4168 wrote to memory of 2608	4168	sbietrcl.exe	95
PID 4168 wrote to memory of 2608	4168	sbietrcl.exe	95
PID 4168 wrote to memory of 2608	4168	sbietrcl.exe	95

C:\Users\Admin\AppData\Local\Temp\9f3af8ec4639e404895b10e9b9a59440N.exe
"C:\Users\Admin\AppData\Local\Temp\9f3af8ec4639e404895b10e9b9a59440N.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:636
- 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:4168
- - 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:2608

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
2.0MB

MD5
d1cbd2985bead51a20137e4b5c3ffdc9

SHA1
58d460d58386bc946e793813c23c991df4b92649

SHA256
c07069bcb1f5c63b0ca670eaa74a31b769549bfda1dfca956ab3773e124a2dbb

SHA512
7355d852c33daa04663a3126578ada443061a81c6ff60d6df54db68629e287ea7a0be41a2f167a6e37f91c0873d4f85d08fbf012a728a9c8a7d80a2c71b0868d

Download Submit
memory/636-0-0x00000000754A2000-0x00000000754A3000-memory.dmp

Filesize
4KB

Download
memory/636-1-0x00000000754A0000-0x0000000075A51000-memory.dmp

Filesize
5.7MB

Download
memory/636-2-0x00000000754A0000-0x0000000075A51000-memory.dmp

Filesize
5.7MB

Download
memory/636-5-0x00000000754A0000-0x0000000075A51000-memory.dmp

Filesize
5.7MB

Download
memory/636-6-0x00000000754A0000-0x0000000075A51000-memory.dmp

Filesize
5.7MB

Download
memory/636-18-0x00000000754A2000-0x00000000754A3000-memory.dmp

Filesize
4KB

Download
memory/636-19-0x00000000754A0000-0x0000000075A51000-memory.dmp

Filesize
5.7MB

Download
memory/636-30-0x00000000754A0000-0x0000000075A51000-memory.dmp

Filesize
5.7MB

Download
memory/2608-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2608-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2608-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2608-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2608-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2608-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2608-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4168-32-0x00000000754A0000-0x0000000075A51000-memory.dmp

Filesize
5.7MB

Download
memory/4168-33-0x00000000754A0000-0x0000000075A51000-memory.dmp

Filesize
5.7MB

Download
memory/4168-34-0x00000000754A0000-0x0000000075A51000-memory.dmp

Filesize
5.7MB

Download
memory/4168-31-0x00000000754A0000-0x0000000075A51000-memory.dmp

Filesize
5.7MB

Download
memory/4168-46-0x00000000754A0000-0x0000000075A51000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads