remcos | e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa

General

Target

e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa.exe
Size

1.4MB
MD5

0b4484f89131f3ab8cf9a4a89d7884c7
SHA1

d20746a8b2954a3a3831de201ffc88213b99dd11
SHA256

e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa
SHA512

5549dfa9acf2eb16c40026ed03bb40e6d128f74cdc54646ace01b3df7d321412f3f6a9c4ce551f090889711b34e01d80aedee7fae01a665b0b99e79058878f03
SSDEEP

24576:1D39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJOW:1F+QrFUBgq25eKwW

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa.exe

Executes dropped EXE 2 IoCs

pid	Process
4504	sbietrcl.exe
1472	sbietrcl.exe

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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Application = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\sbietrcl.exe"	e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4504 set thread context of 1472	4504	sbietrcl.exe	83

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 2 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	e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbietrcl.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4944	e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa.exe
4944	e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa.exe
4944	e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa.exe
4944	e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa.exe
4944	e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa.exe
4944	e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa.exe
4504	sbietrcl.exe
4504	sbietrcl.exe
4504	sbietrcl.exe
4504	sbietrcl.exe
4504	sbietrcl.exe
4504	sbietrcl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4944	e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa.exe
Token: SeDebugPrivilege	4504	sbietrcl.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4944 wrote to memory of 4504	4944	e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa.exe	82
PID 4944 wrote to memory of 4504	4944	e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa.exe	82
PID 4944 wrote to memory of 4504	4944	e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa.exe	82
PID 4504 wrote to memory of 1472	4504	sbietrcl.exe	83
PID 4504 wrote to memory of 1472	4504	sbietrcl.exe	83
PID 4504 wrote to memory of 1472	4504	sbietrcl.exe	83
PID 4504 wrote to memory of 1472	4504	sbietrcl.exe	83
PID 4504 wrote to memory of 1472	4504	sbietrcl.exe	83
PID 4504 wrote to memory of 1472	4504	sbietrcl.exe	83
PID 4504 wrote to memory of 1472	4504	sbietrcl.exe	83
PID 4504 wrote to memory of 1472	4504	sbietrcl.exe	83
PID 4504 wrote to memory of 1472	4504	sbietrcl.exe	83

C:\Users\Admin\AppData\Local\Temp\e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa.exe
"C:\Users\Admin\AppData\Local\Temp\e8f7e74c1dcc5b41ab270db144dc219ba8e6ad986299a7fd82ce458ea7930caa.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:4944
- 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:4504
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe"
    3⤵
    - Executes dropped EXE
    PID:1472

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

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\sbietrcl.exe

Filesize
1.4MB

MD5
ae734c878b97d4f51788677a7c5a6d6e

SHA1
6ddca153a7cd369d514d7c8d0e7b00ab361ab966

SHA256
f6eb8dce779104ac2c017865a4ed1b1b6ead971ba3c8cefee6e875eee155cfb1

SHA512
754704c537dceafa007f69c3ab9b9d9de6f7fdb82f861e59b77ffac17e2a2e09f65b848351390326c8044def0fb80388ece2b76fb926c9717d67d3087299a427

Download Submit
memory/1472-35-0x0000000000340000-0x0000000000357000-memory.dmp

Filesize
92KB

Download
memory/4504-39-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4504-32-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4504-31-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4504-30-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4504-28-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4944-3-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4944-29-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4944-17-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4944-16-0x0000000075162000-0x0000000075163000-memory.dmp

Filesize
4KB

Download
memory/4944-4-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4944-0-0x0000000075162000-0x0000000075163000-memory.dmp

Filesize
4KB

Download
memory/4944-2-0x0000000075160000-0x0000000075711000-memory.dmp

Filesize
5.7MB

Download
memory/4944-1-0x0000000075160000-0x0000000075711000-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