remcos | 8f1c4815ebd89c9e400cbd552d7451c5420e5e2618c507163aebf0e8cede33fc

General

Target

Quotation.exe
Size

1.2MB
MD5

9ddd4a2b7410441f0cf78739046eb732
SHA1

08c58c8bcbe0f9475898b74daff61cf9b6e95fb3
SHA256

0e248ef8cd0d758d18a56d6af3b577628e428954059e666641aa4fe1ee407c8d
SHA512

2201278a617e7b6428cc49e98c8fe976c53a5e006715a1dd8b1d7027c94f144d093a96a708472a03f7252a4b7df393a877ac208495e5b5132cbaca78a3d9b98d
SSDEEP

24576:8BOtGnZ12iiD5NNpcqTeNZX0UuZIRC6p4Tr5:8B4gZApr6N50UueRC66d

Score

10^/10

remcos gasplant discovery evasion execution rat trojan

Malware Config

Extracted

Family

remcos

Botnet

GASPLANT

C2

dotatech.de:30908

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
chrome-SYTYBI
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
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
UAC bypass 3 TTPs 1 IoCs
evasion trojan

Bypass User Account Control
T1548.002

Disable or Modify Tools
T1562.001

Modify Registry
T1112

Processes:

Quotation.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" Quotation.exe
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

2756 powershell.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Quotation.exe

pid	process
2756	powershell.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

Quotation.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Quotation.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Quotation.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Quotation.exe

description pid process target process

PID 1900 set thread context of 2868 1900 Quotation.exe wmplayer.exe
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 1 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

Processes:

wmplayer.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language wmplayer.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

2756 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 2756 powershell.exe

description	pid	process	target process
PID 1900 set thread context of 2868	1900	Quotation.exe	wmplayer.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmplayer.exe

pid	process
2756	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2756	powershell.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

Quotation.exe

description	pid	process	target process
PID 1900 wrote to memory of 2756	1900	Quotation.exe	powershell.exe
PID 1900 wrote to memory of 2756	1900	Quotation.exe	powershell.exe
PID 1900 wrote to memory of 2756	1900	Quotation.exe	powershell.exe
PID 1900 wrote to memory of 2776	1900	Quotation.exe	calc.exe
PID 1900 wrote to memory of 2776	1900	Quotation.exe	calc.exe
PID 1900 wrote to memory of 2776	1900	Quotation.exe	calc.exe
PID 1900 wrote to memory of 2776	1900	Quotation.exe	calc.exe
PID 1900 wrote to memory of 2776	1900	Quotation.exe	calc.exe
PID 1900 wrote to memory of 2776	1900	Quotation.exe	calc.exe
PID 1900 wrote to memory of 2776	1900	Quotation.exe	calc.exe
PID 1900 wrote to memory of 2776	1900	Quotation.exe	calc.exe
PID 1900 wrote to memory of 2776	1900	Quotation.exe	calc.exe
PID 1900 wrote to memory of 2868	1900	Quotation.exe	wmplayer.exe
PID 1900 wrote to memory of 2868	1900	Quotation.exe	wmplayer.exe
PID 1900 wrote to memory of 2868	1900	Quotation.exe	wmplayer.exe
PID 1900 wrote to memory of 2868	1900	Quotation.exe	wmplayer.exe
PID 1900 wrote to memory of 2868	1900	Quotation.exe	wmplayer.exe
PID 1900 wrote to memory of 2868	1900	Quotation.exe	wmplayer.exe
PID 1900 wrote to memory of 2868	1900	Quotation.exe	wmplayer.exe
PID 1900 wrote to memory of 2868	1900	Quotation.exe	wmplayer.exe
PID 1900 wrote to memory of 2868	1900	Quotation.exe	wmplayer.exe
PID 1900 wrote to memory of 2868	1900	Quotation.exe	wmplayer.exe
PID 1900 wrote to memory of 2868	1900	Quotation.exe	wmplayer.exe
PID 1900 wrote to memory of 2592	1900	Quotation.exe	WerFault.exe
PID 1900 wrote to memory of 2592	1900	Quotation.exe	WerFault.exe
PID 1900 wrote to memory of 2592	1900	Quotation.exe	WerFault.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

Quotation.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" Quotation.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Quotation.exe

C:\Users\Admin\AppData\Local\Temp\Quotation.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1900
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Quotation.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2756
- C:\Windows\System32\calc.exe
  "C:\Windows\System32\calc.exe"
  2⤵
  PID:2776
- C:\Program Files (x86)\Windows Media Player\wmplayer.exe
  "C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2868
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1900 -s 800
  2⤵
  PID:2592

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1900-1-0x0000000000390000-0x0000000000398000-memory.dmp

Filesize
32KB

Download
memory/1900-2-0x000007FEF4EB0000-0x000007FEF589C000-memory.dmp

Filesize
9.9MB

Download
memory/1900-3-0x000000001B230000-0x000000001B302000-memory.dmp

Filesize
840KB

Download
memory/1900-39-0x000007FEF4EB0000-0x000007FEF589C000-memory.dmp

Filesize
9.9MB

Download
memory/1900-0-0x000007FEF4EB3000-0x000007FEF4EB4000-memory.dmp

Filesize
4KB

Download
memory/2756-14-0x0000000002C80000-0x0000000002D00000-memory.dmp

Filesize
512KB

Download
memory/2756-27-0x0000000002350000-0x0000000002358000-memory.dmp

Filesize
32KB

Download
memory/2756-15-0x000000001B4E0000-0x000000001B7C2000-memory.dmp

Filesize
2.9MB

Download
memory/2776-6-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-5-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-8-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2776-4-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-32-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-30-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-33-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-34-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2868-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2868-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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