remcos | 18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933

General

Target

18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933N.exe
Size

2.3MB
MD5

c5f3e561e7ccb480156ce573d1375260
SHA1

07afc48f6ac5d19ce1b1ea3c36d30bdc9ad36045
SHA256

18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933
SHA512

17e57d75bd52a23d7212215e089b0e0c61ee5057762e05edd19a47a267858a1c1f967387396c2a364f4fe7a8b11e1f7a6ca11f81053f284db6d41b0831608bca
SSDEEP

24576:xD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJJJlWj:xp7E+QrFUBgq2SnDWj

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

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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933N.exe

Executes dropped EXE 2 IoCs

pid	Process
2080	sbietrcl.exe
2304	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-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2080 set thread context of 2304	2080	sbietrcl.exe	87

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	18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933N.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
2044	18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933N.exe
2044	18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933N.exe
2044	18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933N.exe
2044	18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933N.exe
2044	18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933N.exe
2044	18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933N.exe
2080	sbietrcl.exe
2080	sbietrcl.exe
2080	sbietrcl.exe
2080	sbietrcl.exe
2080	sbietrcl.exe
2080	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2044	18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933N.exe
Token: SeDebugPrivilege	2080	sbietrcl.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2304	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 2080	2044	18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933N.exe	84
PID 2044 wrote to memory of 2080	2044	18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933N.exe	84
PID 2044 wrote to memory of 2080	2044	18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933N.exe	84
PID 2080 wrote to memory of 2304	2080	sbietrcl.exe	87
PID 2080 wrote to memory of 2304	2080	sbietrcl.exe	87
PID 2080 wrote to memory of 2304	2080	sbietrcl.exe	87
PID 2080 wrote to memory of 2304	2080	sbietrcl.exe	87
PID 2080 wrote to memory of 2304	2080	sbietrcl.exe	87
PID 2080 wrote to memory of 2304	2080	sbietrcl.exe	87
PID 2080 wrote to memory of 2304	2080	sbietrcl.exe	87
PID 2080 wrote to memory of 2304	2080	sbietrcl.exe	87
PID 2080 wrote to memory of 2304	2080	sbietrcl.exe	87

C:\Users\Admin\AppData\Local\Temp\18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933N.exe
"C:\Users\Admin\AppData\Local\Temp\18c122dd74707bc39b0578316e5e7abd39a81e6d8efafaa5367da6bece623933N.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:2044
- 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:2080
- - 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:2304

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
2.3MB

MD5
690114de470abae29d441f46ebbe30a9

SHA1
859bb17829d420cfeada9ce56070bfc8d4411df2

SHA256
168130d0663175cf97a8a8f145dbc093f2cb58f0e575af163d2572f32530d247

SHA512
78b96cb6815496c14999536983b440b9d9be0b0f3f187087b19a36a5ff9a5279226f14ab9423b2da8127a69b92bc1517ba9d210d225fc1b47a5811ce9a601daf

Download Submit
memory/2044-30-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2044-0-0x0000000075352000-0x0000000075353000-memory.dmp

Filesize
4KB

Download
memory/2044-5-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2044-6-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2044-18-0x0000000075352000-0x0000000075353000-memory.dmp

Filesize
4KB

Download
memory/2044-19-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2044-1-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2044-2-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2044-31-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2080-33-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2080-32-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2080-34-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2080-46-0x0000000075350000-0x0000000075901000-memory.dmp

Filesize
5.7MB

Download
memory/2304-45-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2304-42-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2304-39-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2304-43-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2304-38-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2304-35-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2304-49-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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