remcos | 6a1679c6375dbd6c4b959611fb54e894384a765d6b257a5e82e8fbde1c21e57a

General

Target

8c6670300401e984a577829661de4bf0N.exe
Size

2.2MB
MD5

8c6670300401e984a577829661de4bf0
SHA1

e0968c1ae920c0f635feb1f0db87bedfb81ee00b
SHA256

6a1679c6375dbd6c4b959611fb54e894384a765d6b257a5e82e8fbde1c21e57a
SHA512

0dda160e72268f20fcb2007f195bceca90b0620de11a309abb2e4cccfd5d02fab396e7e79f3a19f3591111daaee040e9c6a66a7bfc0848e8af66d039d0c5f22a
SSDEEP

24576:tD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF49rOoBlI:tp7E+QrFUBgq2f3I

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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	8c6670300401e984a577829661de4bf0N.exe

Executes dropped EXE 2 IoCs

pid	Process
4964	sbietrcl.exe
4992	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-1-5-21-786284298-625481688-3210388970-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	8c6670300401e984a577829661de4bf0N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4964 set thread context of 4992	4964	sbietrcl.exe	93

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	8c6670300401e984a577829661de4bf0N.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
4104	8c6670300401e984a577829661de4bf0N.exe
4104	8c6670300401e984a577829661de4bf0N.exe
4104	8c6670300401e984a577829661de4bf0N.exe
4104	8c6670300401e984a577829661de4bf0N.exe
4104	8c6670300401e984a577829661de4bf0N.exe
4104	8c6670300401e984a577829661de4bf0N.exe
4964	sbietrcl.exe
4964	sbietrcl.exe
4964	sbietrcl.exe
4964	sbietrcl.exe
4964	sbietrcl.exe
4964	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4104	8c6670300401e984a577829661de4bf0N.exe
Token: SeDebugPrivilege	4964	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4992	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4104 wrote to memory of 4964	4104	8c6670300401e984a577829661de4bf0N.exe	92
PID 4104 wrote to memory of 4964	4104	8c6670300401e984a577829661de4bf0N.exe	92
PID 4104 wrote to memory of 4964	4104	8c6670300401e984a577829661de4bf0N.exe	92
PID 4964 wrote to memory of 4992	4964	sbietrcl.exe	93
PID 4964 wrote to memory of 4992	4964	sbietrcl.exe	93
PID 4964 wrote to memory of 4992	4964	sbietrcl.exe	93
PID 4964 wrote to memory of 4992	4964	sbietrcl.exe	93
PID 4964 wrote to memory of 4992	4964	sbietrcl.exe	93
PID 4964 wrote to memory of 4992	4964	sbietrcl.exe	93
PID 4964 wrote to memory of 4992	4964	sbietrcl.exe	93
PID 4964 wrote to memory of 4992	4964	sbietrcl.exe	93
PID 4964 wrote to memory of 4992	4964	sbietrcl.exe	93

C:\Users\Admin\AppData\Local\Temp\8c6670300401e984a577829661de4bf0N.exe
"C:\Users\Admin\AppData\Local\Temp\8c6670300401e984a577829661de4bf0N.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:4104
- 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:4964
- - 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:4992

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
2.2MB

MD5
fb921e6ec54e29bd55039e9cfdc88eac

SHA1
275098f7fb7a63721bb125de1f7b1529c704a684

SHA256
0f352c9e9ec2ac63a8c404c01b2f5193e6512c1183766b30ddda141c54eba452

SHA512
793f8b00aca1537c75344b452467f26748403f7b3df27a830ba891a89ad922455ecef4a721e1da761371a8dfa811faa2a168f04dd2f65d94a10db04fdec4e878

Download Submit
memory/4104-30-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/4104-2-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/4104-5-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/4104-6-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/4104-18-0x0000000074632000-0x0000000074633000-memory.dmp

Filesize
4KB

Download
memory/4104-19-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/4104-1-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/4104-0-0x0000000074632000-0x0000000074633000-memory.dmp

Filesize
4KB

Download
memory/4964-46-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/4964-31-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/4964-34-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/4964-33-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/4964-32-0x0000000074630000-0x0000000074BE1000-memory.dmp

Filesize
5.7MB

Download
memory/4992-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4992-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4992-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4992-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4992-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4992-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4992-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads