remcos | 7a422ffa32fcdb0ca5698ef80ea3a7bed96b3fc42e008b0458256f4c680bd395

General

Target

LPO.exe
Size

1.8MB
MD5

c3bf525ab42ea2e0a37a55b290dd13bf
SHA1

665e8ac35e69dc4a1fa273bd35703a201f9b074d
SHA256

7a422ffa32fcdb0ca5698ef80ea3a7bed96b3fc42e008b0458256f4c680bd395
SHA512

d6f71d29a5e4b94d04181791edf55d22c3640e2c4115a1b17f4d6c14b79ea0b728a06acb0a0c3848ac4edae8535cf923585af13236fdeddf0051345d083fa9d8
SSDEEP

12288:qLXh08hSxuM4AUQC46V10t5hwv1xh14VGpxJz5W+EQpOIzkTJXY8I+6yi:QXNSNVt5+vPh14gxJzsQpOmkTJXY5

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:

LPO.exe

description ioc process

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

1948 powershell.exe

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

pid	process
1948	powershell.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

LPO.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

LPO.exe

description pid process target process

PID 2444 set thread context of 2588 2444 LPO.exe wab.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:

wab.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language wab.exe
Runs regedit.exe 1 IoCs

Processes:

regedit.exe

pid process

2812 regedit.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

powershell.exe

pid process

1948 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 1948 powershell.exe

description	pid	process	target process
PID 2444 set thread context of 2588	2444	LPO.exe	wab.exe

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

pid	process
2812	regedit.exe

pid	process
1948	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1948	powershell.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

LPO.exe

description	pid	process	target process
PID 2444 wrote to memory of 1948	2444	LPO.exe	powershell.exe
PID 2444 wrote to memory of 1948	2444	LPO.exe	powershell.exe
PID 2444 wrote to memory of 1948	2444	LPO.exe	powershell.exe
PID 2444 wrote to memory of 2488	2444	LPO.exe	csc.exe
PID 2444 wrote to memory of 2488	2444	LPO.exe	csc.exe
PID 2444 wrote to memory of 2488	2444	LPO.exe	csc.exe
PID 2444 wrote to memory of 2488	2444	LPO.exe	csc.exe
PID 2444 wrote to memory of 2812	2444	LPO.exe	regedit.exe
PID 2444 wrote to memory of 2812	2444	LPO.exe	regedit.exe
PID 2444 wrote to memory of 2812	2444	LPO.exe	regedit.exe
PID 2444 wrote to memory of 2812	2444	LPO.exe	regedit.exe
PID 2444 wrote to memory of 2812	2444	LPO.exe	regedit.exe
PID 2444 wrote to memory of 2812	2444	LPO.exe	regedit.exe
PID 2444 wrote to memory of 2812	2444	LPO.exe	regedit.exe
PID 2444 wrote to memory of 2812	2444	LPO.exe	regedit.exe
PID 2444 wrote to memory of 2812	2444	LPO.exe	regedit.exe
PID 2444 wrote to memory of 2588	2444	LPO.exe	wab.exe
PID 2444 wrote to memory of 2588	2444	LPO.exe	wab.exe
PID 2444 wrote to memory of 2588	2444	LPO.exe	wab.exe
PID 2444 wrote to memory of 2588	2444	LPO.exe	wab.exe
PID 2444 wrote to memory of 2588	2444	LPO.exe	wab.exe
PID 2444 wrote to memory of 2588	2444	LPO.exe	wab.exe
PID 2444 wrote to memory of 2588	2444	LPO.exe	wab.exe
PID 2444 wrote to memory of 2588	2444	LPO.exe	wab.exe
PID 2444 wrote to memory of 2588	2444	LPO.exe	wab.exe
PID 2444 wrote to memory of 2588	2444	LPO.exe	wab.exe
PID 2444 wrote to memory of 2588	2444	LPO.exe	wab.exe
PID 2444 wrote to memory of 3052	2444	LPO.exe	WerFault.exe
PID 2444 wrote to memory of 3052	2444	LPO.exe	WerFault.exe
PID 2444 wrote to memory of 3052	2444	LPO.exe	WerFault.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

LPO.exe

description ioc process

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

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

C:\Users\Admin\AppData\Local\Temp\LPO.exe
"C:\Users\Admin\AppData\Local\Temp\LPO.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2444
- 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\LPO.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1948
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  PID:2488
- C:\Windows\regedit.exe
  "C:\Windows\regedit.exe"
  2⤵
  - Runs regedit.exe
  PID:2812
- C:\Program Files (x86)\Windows Mail\wab.exe
  "C:\Program Files (x86)\Windows Mail\wab.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2588
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2444 -s 888
  2⤵
  PID:3052

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/1948-14-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/1948-8-0x0000000002C80000-0x0000000002D00000-memory.dmp

Filesize
512KB

Download
memory/1948-9-0x000000001B580000-0x000000001B862000-memory.dmp

Filesize
2.9MB

Download
memory/2444-1-0x0000000001120000-0x0000000001128000-memory.dmp

Filesize
32KB

Download
memory/2444-2-0x000007FEF5C80000-0x000007FEF666C000-memory.dmp

Filesize
9.9MB

Download
memory/2444-3-0x0000000000FD0000-0x00000000010A2000-memory.dmp

Filesize
840KB

Download
memory/2444-0-0x000007FEF5C83000-0x000007FEF5C84000-memory.dmp

Filesize
4KB

Download
memory/2444-47-0x000007FEF5C80000-0x000007FEF666C000-memory.dmp

Filesize
9.9MB

Download
memory/2588-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2588-41-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2588-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2588-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2588-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2588-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2588-38-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2588-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2588-37-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2588-39-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2588-40-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2588-53-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2588-42-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2588-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2588-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2588-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2588-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2588-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2812-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2812-19-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2812-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2812-10-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2812-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2812-17-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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