remcos | 3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b

General

Target

3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
Size

1.7MB
MD5

cdc138c151b5584f3a23dc7b72fa413d
SHA1

7fd4a26b4ea15cd173e5f850324186221e08ada2
SHA256

3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b
SHA512

0baaabab13594b6729697dec47535433bfb99a97f98cd6e1f9d23148b640d07e0386b45eabc7f69c05bf5b3d729bca8e6962542b9b4e02cdd43211fe31ea1f75
SSDEEP

24576:YD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjomy1:Yp7E+QrFUBgq2vy1

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-1-5-21-3446877943-4095308722-756223633-1000\Control Panel\International\Geo\Nation	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe

Executes dropped EXE 2 IoCs

pid	Process
4944	sbietrcl.exe
4848	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-1-5-21-3446877943-4095308722-756223633-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4944 set thread context of 4848	4944	sbietrcl.exe	94

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	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.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
1080	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
1080	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
1080	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
1080	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
1080	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
1080	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
4944	sbietrcl.exe
4944	sbietrcl.exe
4944	sbietrcl.exe
4944	sbietrcl.exe
4944	sbietrcl.exe
4944	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1080	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
Token: SeDebugPrivilege	4944	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4848	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1080 wrote to memory of 4944	1080	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe	91
PID 1080 wrote to memory of 4944	1080	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe	91
PID 1080 wrote to memory of 4944	1080	3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe	91
PID 4944 wrote to memory of 4848	4944	sbietrcl.exe	94
PID 4944 wrote to memory of 4848	4944	sbietrcl.exe	94
PID 4944 wrote to memory of 4848	4944	sbietrcl.exe	94
PID 4944 wrote to memory of 4848	4944	sbietrcl.exe	94
PID 4944 wrote to memory of 4848	4944	sbietrcl.exe	94
PID 4944 wrote to memory of 4848	4944	sbietrcl.exe	94
PID 4944 wrote to memory of 4848	4944	sbietrcl.exe	94
PID 4944 wrote to memory of 4848	4944	sbietrcl.exe	94
PID 4944 wrote to memory of 4848	4944	sbietrcl.exe	94

C:\Users\Admin\AppData\Local\Temp\3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.exe
"C:\Users\Admin\AppData\Local\Temp\3a3fb82ee69f6129863c4fdd8d237d1086c3a20e53b7ff825a9791cb73a8fa1b.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:1080
- 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:4944
- - 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:4848

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
1.7MB

MD5
f2313e7e22e51d3b0f39755d2451aab9

SHA1
cfdb59ddd871188b83b796d72ff5bbfeb1447d93

SHA256
cf6536014f9b034529d859d09e41eb93e98c5639e2f7a5961dd2a92d47bef02f

SHA512
bdb1efb6deda59d55f6dff8b2270ae4a179f6e9db51f252e800acda8a451900dd45b3c79a4fe9cdaa7c380fa4007732ba073c9a2b2468ca5e496b2517cd94675

Download Submit
memory/1080-0-0x0000000074BC2000-0x0000000074BC3000-memory.dmp

Filesize
4KB

Download
memory/1080-2-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/1080-1-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/1080-5-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/1080-6-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/1080-18-0x0000000074BC2000-0x0000000074BC3000-memory.dmp

Filesize
4KB

Download
memory/1080-19-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/1080-20-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/1080-31-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/4848-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4848-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4848-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4848-46-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4848-41-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4848-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4848-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4944-33-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/4944-34-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/4944-32-0x0000000074BC0000-0x0000000075171000-memory.dmp

Filesize
5.7MB

Download
memory/4944-40-0x0000000074BC0000-0x0000000075171000-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