remcos | 3e8bebf98bdc63654ac4758669094f2c5dd43818e6fde96b64b9ca4f43791dda

General

Target

36f01f372c5e40e552f46e941198c280N.exe
Size

2.1MB
MD5

36f01f372c5e40e552f46e941198c280
SHA1

30885bc357a3cb16f616186769995449c865823f
SHA256

3e8bebf98bdc63654ac4758669094f2c5dd43818e6fde96b64b9ca4f43791dda
SHA512

b7ce539760a01465e48059e370e80ff93b65b3ff50dcaed588e1389772cef1b7cc7c1c775b446bcd454f6d9dd045b9953b8d81f635dc155a1d76d63fa90dedfb
SSDEEP

24576:ND39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnejac:Np7E+QrFUBgq2SnA

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	36f01f372c5e40e552f46e941198c280N.exe

Executes dropped EXE 2 IoCs

pid	Process
4008	sbietrcl.exe
2000	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-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	36f01f372c5e40e552f46e941198c280N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4008 set thread context of 2000	4008	sbietrcl.exe	96

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	36f01f372c5e40e552f46e941198c280N.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
1168	36f01f372c5e40e552f46e941198c280N.exe
1168	36f01f372c5e40e552f46e941198c280N.exe
1168	36f01f372c5e40e552f46e941198c280N.exe
1168	36f01f372c5e40e552f46e941198c280N.exe
1168	36f01f372c5e40e552f46e941198c280N.exe
1168	36f01f372c5e40e552f46e941198c280N.exe
4008	sbietrcl.exe
4008	sbietrcl.exe
4008	sbietrcl.exe
4008	sbietrcl.exe
4008	sbietrcl.exe
4008	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1168	36f01f372c5e40e552f46e941198c280N.exe
Token: SeDebugPrivilege	4008	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2000	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1168 wrote to memory of 4008	1168	36f01f372c5e40e552f46e941198c280N.exe	93
PID 1168 wrote to memory of 4008	1168	36f01f372c5e40e552f46e941198c280N.exe	93
PID 1168 wrote to memory of 4008	1168	36f01f372c5e40e552f46e941198c280N.exe	93
PID 4008 wrote to memory of 2000	4008	sbietrcl.exe	96
PID 4008 wrote to memory of 2000	4008	sbietrcl.exe	96
PID 4008 wrote to memory of 2000	4008	sbietrcl.exe	96
PID 4008 wrote to memory of 2000	4008	sbietrcl.exe	96
PID 4008 wrote to memory of 2000	4008	sbietrcl.exe	96
PID 4008 wrote to memory of 2000	4008	sbietrcl.exe	96
PID 4008 wrote to memory of 2000	4008	sbietrcl.exe	96
PID 4008 wrote to memory of 2000	4008	sbietrcl.exe	96
PID 4008 wrote to memory of 2000	4008	sbietrcl.exe	96

C:\Users\Admin\AppData\Local\Temp\36f01f372c5e40e552f46e941198c280N.exe
"C:\Users\Admin\AppData\Local\Temp\36f01f372c5e40e552f46e941198c280N.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:1168
- 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:4008
- - 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:2000

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
2.1MB

MD5
bc0e87ca26f92d3c990a36c97b32883f

SHA1
60798726210233a04d1c0884a2fbb079ef128faa

SHA256
94b95e1b3824007cbfe8face0275d2387bbf03b67afd86002c62151544de8764

SHA512
acf071bb7f4a3d80bd3ad0db89b6139e09db2f01c4617e336dbe1747f09e6337f6020a543923d622e3ed4640f58f0a5855269c2ab99eddbfc95f6ee2c1ff321d

Download Submit
memory/1168-0-0x0000000074F02000-0x0000000074F03000-memory.dmp

Filesize
4KB

Download
memory/1168-1-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download
memory/1168-2-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download
memory/1168-5-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download
memory/1168-6-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download
memory/1168-18-0x0000000074F02000-0x0000000074F03000-memory.dmp

Filesize
4KB

Download
memory/1168-19-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download
memory/1168-30-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download
memory/2000-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2000-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2000-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2000-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2000-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2000-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2000-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4008-31-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download
memory/4008-33-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download
memory/4008-34-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download
memory/4008-32-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download
memory/4008-46-0x0000000074F00000-0x00000000754B1000-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