remcos | 7a422ffa32fcdb0ca5698ef80ea3a7bed96b3fc42e008b0458256f4c680bd395

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14-11-2024 10:00

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General

Target

tmp9vrynm_c.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

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

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	tmp9vrynm_c.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

pid	Process
1044	powershell.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	tmp9vrynm_c.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	tmp9vrynm_c.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 628 set thread context of 284	628	tmp9vrynm_c.exe	32

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

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

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1044	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1044	powershell.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 1044	628	tmp9vrynm_c.exe	28
PID 628 wrote to memory of 1044	628	tmp9vrynm_c.exe	28
PID 628 wrote to memory of 1044	628	tmp9vrynm_c.exe	28
PID 628 wrote to memory of 2904	628	tmp9vrynm_c.exe	30
PID 628 wrote to memory of 2904	628	tmp9vrynm_c.exe	30
PID 628 wrote to memory of 2904	628	tmp9vrynm_c.exe	30
PID 628 wrote to memory of 2904	628	tmp9vrynm_c.exe	30
PID 628 wrote to memory of 2904	628	tmp9vrynm_c.exe	30
PID 628 wrote to memory of 2904	628	tmp9vrynm_c.exe	30
PID 628 wrote to memory of 2904	628	tmp9vrynm_c.exe	30
PID 628 wrote to memory of 2904	628	tmp9vrynm_c.exe	30
PID 628 wrote to memory of 2904	628	tmp9vrynm_c.exe	30
PID 628 wrote to memory of 3000	628	tmp9vrynm_c.exe	31
PID 628 wrote to memory of 3000	628	tmp9vrynm_c.exe	31
PID 628 wrote to memory of 3000	628	tmp9vrynm_c.exe	31
PID 628 wrote to memory of 3000	628	tmp9vrynm_c.exe	31
PID 628 wrote to memory of 3000	628	tmp9vrynm_c.exe	31
PID 628 wrote to memory of 3000	628	tmp9vrynm_c.exe	31
PID 628 wrote to memory of 3000	628	tmp9vrynm_c.exe	31
PID 628 wrote to memory of 3000	628	tmp9vrynm_c.exe	31
PID 628 wrote to memory of 3000	628	tmp9vrynm_c.exe	31
PID 628 wrote to memory of 3000	628	tmp9vrynm_c.exe	31
PID 628 wrote to memory of 284	628	tmp9vrynm_c.exe	32
PID 628 wrote to memory of 284	628	tmp9vrynm_c.exe	32
PID 628 wrote to memory of 284	628	tmp9vrynm_c.exe	32
PID 628 wrote to memory of 284	628	tmp9vrynm_c.exe	32
PID 628 wrote to memory of 284	628	tmp9vrynm_c.exe	32
PID 628 wrote to memory of 284	628	tmp9vrynm_c.exe	32
PID 628 wrote to memory of 284	628	tmp9vrynm_c.exe	32
PID 628 wrote to memory of 284	628	tmp9vrynm_c.exe	32
PID 628 wrote to memory of 284	628	tmp9vrynm_c.exe	32
PID 628 wrote to memory of 284	628	tmp9vrynm_c.exe	32
PID 628 wrote to memory of 284	628	tmp9vrynm_c.exe	32
PID 628 wrote to memory of 1760	628	tmp9vrynm_c.exe	33
PID 628 wrote to memory of 1760	628	tmp9vrynm_c.exe	33
PID 628 wrote to memory of 1760	628	tmp9vrynm_c.exe	33
PID 628 wrote to memory of 1760	628	tmp9vrynm_c.exe	33

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	tmp9vrynm_c.exe

C:\Users\Admin\AppData\Local\Temp\tmp9vrynm_c.exe
"C:\Users\Admin\AppData\Local\Temp\tmp9vrynm_c.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:628
- 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\tmp9vrynm_c.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1044
- C:\Windows\System32\notepad.exe
  "C:\Windows\System32\notepad.exe"
  2⤵
  PID:2904
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"
  2⤵
  PID:3000
- C:\Program Files (x86)\Windows Mail\wab.exe
  "C:\Program Files (x86)\Windows Mail\wab.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:284
- C:\Program Files (x86)\Windows Mail\wab.exe
  "C:\Program Files (x86)\Windows Mail\wab.exe"
  2⤵
  PID:1760

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/284-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/284-54-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/284-44-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/284-43-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/284-62-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/284-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/284-61-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/284-58-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/284-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/284-56-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/284-55-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/284-50-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/284-49-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/284-45-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/284-48-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/284-63-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/284-46-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/628-2-0x000007FEF5C40000-0x000007FEF662C000-memory.dmp

Filesize
9.9MB

Download
memory/628-0-0x000007FEF5C43000-0x000007FEF5C44000-memory.dmp

Filesize
4KB

Download
memory/628-1-0x0000000000D90000-0x0000000000D98000-memory.dmp

Filesize
32KB

Download
memory/628-3-0x000000001AC30000-0x000000001AD02000-memory.dmp

Filesize
840KB

Download
memory/628-47-0x000007FEF5C40000-0x000007FEF662C000-memory.dmp

Filesize
9.9MB

Download
memory/1044-16-0x0000000002850000-0x00000000028D0000-memory.dmp

Filesize
512KB

Download
memory/1044-18-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download
memory/1044-17-0x000000001B660000-0x000000001B942000-memory.dmp

Filesize
2.9MB

Download
memory/2904-6-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2904-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2904-8-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2904-11-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2904-10-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2904-4-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download