remcos | 5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379

General

Target

5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379.exe
Size

1.8MB
MD5

0431be431ade102a44e8e3582c71f921
SHA1

98d00d419396a3ae5c844890b4ded9431ec9357a
SHA256

5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379
SHA512

feb2837771607dfca36f94d87988eed2212434fb7a21f54835483132aa81b82927d9b32589d42437521cb3e1fc566fce46067f4ee0f6753a65934afe4471d4a7
SSDEEP

24576:6D39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjoE:6p7E+QrFUBgq2F

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-1-5-21-3975168204-1612096350-4002976354-1000\Control Panel\International\Geo\Nation	5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379.exe

Executes dropped EXE 2 IoCs

pid	Process
2832	sbietrcl.exe
3484	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-1-5-21-3975168204-1612096350-4002976354-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2832 set thread context of 3484	2832	sbietrcl.exe	97

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	5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379.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
4120	5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379.exe
4120	5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379.exe
4120	5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379.exe
4120	5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379.exe
4120	5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379.exe
4120	5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379.exe
2832	sbietrcl.exe
2832	sbietrcl.exe
2832	sbietrcl.exe
2832	sbietrcl.exe
2832	sbietrcl.exe
2832	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4120	5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379.exe
Token: SeDebugPrivilege	2832	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3484	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4120 wrote to memory of 2832	4120	5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379.exe	96
PID 4120 wrote to memory of 2832	4120	5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379.exe	96
PID 4120 wrote to memory of 2832	4120	5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379.exe	96
PID 2832 wrote to memory of 3484	2832	sbietrcl.exe	97
PID 2832 wrote to memory of 3484	2832	sbietrcl.exe	97
PID 2832 wrote to memory of 3484	2832	sbietrcl.exe	97
PID 2832 wrote to memory of 3484	2832	sbietrcl.exe	97
PID 2832 wrote to memory of 3484	2832	sbietrcl.exe	97
PID 2832 wrote to memory of 3484	2832	sbietrcl.exe	97
PID 2832 wrote to memory of 3484	2832	sbietrcl.exe	97
PID 2832 wrote to memory of 3484	2832	sbietrcl.exe	97
PID 2832 wrote to memory of 3484	2832	sbietrcl.exe	97

C:\Users\Admin\AppData\Local\Temp\5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379.exe
"C:\Users\Admin\AppData\Local\Temp\5a775d8c281f0a20b40ae98a67c456c1114b5440b19efb621573f3ac2f0f6379.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:4120
- 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:2832
- - 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:3484

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
1.8MB

MD5
034e15527b8a528f14d030544dd7a137

SHA1
9344252caff2af4bef435827c0bc88c1bd6aec56

SHA256
86cd0a58eaedcb942e0de56edabf72e747ab3f806fc31e3984e7d1657c069a72

SHA512
27f46fa25be1ddc7fcc95941acb0b3548774f1d3bbfc567c47847ee3832e37bedef88beed65a857afbedeb94873886b689762b4959db1c3e568387a64516704c

Download Submit
memory/2832-46-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/2832-33-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/2832-34-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/2832-32-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/2832-31-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/3484-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3484-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3484-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3484-44-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3484-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3484-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/3484-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4120-2-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4120-5-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4120-0-0x0000000074802000-0x0000000074803000-memory.dmp

Filesize
4KB

Download
memory/4120-19-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4120-6-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4120-18-0x0000000074802000-0x0000000074803000-memory.dmp

Filesize
4KB

Download
memory/4120-1-0x0000000074800000-0x0000000074DB1000-memory.dmp

Filesize
5.7MB

Download
memory/4120-30-0x0000000074800000-0x0000000074DB1000-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