remcos | a1f9dccf3bf17ca1e478456d6deae103abb5b4d09855aa043546376d25313b84

General

Target

INV20242205.exe
Size

865KB
MD5

d6437b4cd799fa74f3851d2f6b077b9d
SHA1

d2868bc13d71560e96cd65852aa7bb0658a44426
SHA256

00ea3c0ae890c065ba83631f1a7d7018152ec44114d80dc8d8670d499e66b91c
SHA512

3cfb10162483a5200771a71ae4ea6fd945add4ebc391d6cac8fb3116d3133da2175cd4c5b14c980ba7c522dd0261b946f21195b35bcc47f35a5e10c184212771
SSDEEP

24576:7pLHyfbTB4z6jtxXWlEfPpELK37dP+vTpwyDbC:7pLHIziL2dIpwy3C

Score

10^/10

remcos remotehost evasion execution rat trojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

91.214.78.17:2404

Attributes

audio_folder
MicRecords
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
Rmc-MF7K1V
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
UAC bypass 3 TTPs 1 IoCs
evasion trojan

Bypass User Account Control
T1548.002

Disable or Modify Tools
T1562.001

Modify Registry
T1112

Processes:

INV20242205.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" INV20242205.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	INV20242205.exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

INV20242205.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\INV20242205.exe = "0"	INV20242205.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	INV20242205.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

1920 powershell.exe

pid	process
1920	powershell.exe

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

Processes:

INV20242205.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	INV20242205.exe

Windows security modification 2 TTPs 3 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

INV20242205.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	INV20242205.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	INV20242205.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\INV20242205.exe = "0"	INV20242205.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

INV20242205.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	INV20242205.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	INV20242205.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

INV20242205.exe

description pid process target process

PID 1768 set thread context of 2920 1768 INV20242205.exe ilasm.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1664 2920 WerFault.exe ilasm.exe
Runs regedit.exe 1 IoCs

Processes:

regedit.exe

pid process

4988 regedit.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exe

pid process

1920 powershell.exe
1920 powershell.exe
1920 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 1920 powershell.exe

description	pid	process	target process
PID 1768 set thread context of 2920	1768	INV20242205.exe	ilasm.exe

pid	pid_target	process	target process
1664	2920	WerFault.exe	ilasm.exe

pid	process
4988	regedit.exe

pid	process
1920	powershell.exe
1920	powershell.exe
1920	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1920	powershell.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

INV20242205.exe

description	pid	process	target process
PID 1768 wrote to memory of 1920	1768	INV20242205.exe	powershell.exe
PID 1768 wrote to memory of 1920	1768	INV20242205.exe	powershell.exe
PID 1768 wrote to memory of 4528	1768	INV20242205.exe	wmplayer.exe
PID 1768 wrote to memory of 4528	1768	INV20242205.exe	wmplayer.exe
PID 1768 wrote to memory of 4528	1768	INV20242205.exe	wmplayer.exe
PID 1768 wrote to memory of 3140	1768	INV20242205.exe	cmd.exe
PID 1768 wrote to memory of 3140	1768	INV20242205.exe	cmd.exe
PID 1768 wrote to memory of 3140	1768	INV20242205.exe	cmd.exe
PID 1768 wrote to memory of 3140	1768	INV20242205.exe	cmd.exe
PID 1768 wrote to memory of 3140	1768	INV20242205.exe	cmd.exe
PID 1768 wrote to memory of 3140	1768	INV20242205.exe	cmd.exe
PID 1768 wrote to memory of 3140	1768	INV20242205.exe	cmd.exe
PID 1768 wrote to memory of 3140	1768	INV20242205.exe	cmd.exe
PID 1768 wrote to memory of 3140	1768	INV20242205.exe	cmd.exe
PID 1768 wrote to memory of 3140	1768	INV20242205.exe	cmd.exe
PID 1768 wrote to memory of 3648	1768	INV20242205.exe	wab.exe
PID 1768 wrote to memory of 3648	1768	INV20242205.exe	wab.exe
PID 1768 wrote to memory of 3648	1768	INV20242205.exe	wab.exe
PID 1768 wrote to memory of 5040	1768	INV20242205.exe	notepad.exe
PID 1768 wrote to memory of 5040	1768	INV20242205.exe	notepad.exe
PID 1768 wrote to memory of 5040	1768	INV20242205.exe	notepad.exe
PID 1768 wrote to memory of 5040	1768	INV20242205.exe	notepad.exe
PID 1768 wrote to memory of 5040	1768	INV20242205.exe	notepad.exe
PID 1768 wrote to memory of 5040	1768	INV20242205.exe	notepad.exe
PID 1768 wrote to memory of 5040	1768	INV20242205.exe	notepad.exe
PID 1768 wrote to memory of 5040	1768	INV20242205.exe	notepad.exe
PID 1768 wrote to memory of 5040	1768	INV20242205.exe	notepad.exe
PID 1768 wrote to memory of 5040	1768	INV20242205.exe	notepad.exe
PID 1768 wrote to memory of 4988	1768	INV20242205.exe	regedit.exe
PID 1768 wrote to memory of 4988	1768	INV20242205.exe	regedit.exe
PID 1768 wrote to memory of 4988	1768	INV20242205.exe	regedit.exe
PID 1768 wrote to memory of 4988	1768	INV20242205.exe	regedit.exe
PID 1768 wrote to memory of 4988	1768	INV20242205.exe	regedit.exe
PID 1768 wrote to memory of 4988	1768	INV20242205.exe	regedit.exe
PID 1768 wrote to memory of 4988	1768	INV20242205.exe	regedit.exe
PID 1768 wrote to memory of 4988	1768	INV20242205.exe	regedit.exe
PID 1768 wrote to memory of 4988	1768	INV20242205.exe	regedit.exe
PID 1768 wrote to memory of 4988	1768	INV20242205.exe	regedit.exe
PID 1768 wrote to memory of 2572	1768	INV20242205.exe	aspnet_wp.exe
PID 1768 wrote to memory of 2572	1768	INV20242205.exe	aspnet_wp.exe
PID 1768 wrote to memory of 2572	1768	INV20242205.exe	aspnet_wp.exe
PID 1768 wrote to memory of 4344	1768	INV20242205.exe	svchost.exe
PID 1768 wrote to memory of 4344	1768	INV20242205.exe	svchost.exe
PID 1768 wrote to memory of 4344	1768	INV20242205.exe	svchost.exe
PID 1768 wrote to memory of 4344	1768	INV20242205.exe	svchost.exe
PID 1768 wrote to memory of 4344	1768	INV20242205.exe	svchost.exe
PID 1768 wrote to memory of 4344	1768	INV20242205.exe	svchost.exe
PID 1768 wrote to memory of 4344	1768	INV20242205.exe	svchost.exe
PID 1768 wrote to memory of 4344	1768	INV20242205.exe	svchost.exe
PID 1768 wrote to memory of 4344	1768	INV20242205.exe	svchost.exe
PID 1768 wrote to memory of 4344	1768	INV20242205.exe	svchost.exe
PID 1768 wrote to memory of 4512	1768	INV20242205.exe	calc.exe
PID 1768 wrote to memory of 4512	1768	INV20242205.exe	calc.exe
PID 1768 wrote to memory of 4512	1768	INV20242205.exe	calc.exe
PID 1768 wrote to memory of 4512	1768	INV20242205.exe	calc.exe
PID 1768 wrote to memory of 4512	1768	INV20242205.exe	calc.exe
PID 1768 wrote to memory of 4512	1768	INV20242205.exe	calc.exe
PID 1768 wrote to memory of 4512	1768	INV20242205.exe	calc.exe
PID 1768 wrote to memory of 4512	1768	INV20242205.exe	calc.exe
PID 1768 wrote to memory of 4512	1768	INV20242205.exe	calc.exe
PID 1768 wrote to memory of 4512	1768	INV20242205.exe	calc.exe
PID 1768 wrote to memory of 2920	1768	INV20242205.exe	ilasm.exe
PID 1768 wrote to memory of 2920	1768	INV20242205.exe	ilasm.exe
PID 1768 wrote to memory of 2920	1768	INV20242205.exe	ilasm.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

INV20242205.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" INV20242205.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	INV20242205.exe

C:\Users\Admin\AppData\Local\Temp\INV20242205.exe
"C:\Users\Admin\AppData\Local\Temp\INV20242205.exe"
1⤵
- UAC bypass
- Windows security bypass
- Checks computer location settings
- Windows security modification
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1768
- 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\INV20242205.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1920
- C:\Program Files (x86)\Windows Media Player\wmplayer.exe
  "C:\Program Files (x86)\Windows Media Player\wmplayer.exe"
  2⤵
  PID:4528
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe"
  2⤵
  PID:3140
- C:\Program Files (x86)\Windows Mail\wab.exe
  "C:\Program Files (x86)\Windows Mail\wab.exe"
  2⤵
  PID:3648
- C:\Windows\System32\notepad.exe
  "C:\Windows\System32\notepad.exe"
  2⤵
  PID:5040
- C:\Windows\regedit.exe
  "C:\Windows\regedit.exe"
  2⤵
  - Runs regedit.exe
  PID:4988
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_wp.exe"
  2⤵
  PID:2572
- C:\Windows\System32\svchost.exe
  "C:\Windows\System32\svchost.exe"
  2⤵
  PID:4344
- C:\Windows\System32\calc.exe
  "C:\Windows\System32\calc.exe"
  2⤵
  PID:4512
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"
  2⤵
  PID:2920
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2920 -s 12
    3⤵
    - Program crash
    PID:1664
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe"
  2⤵
  PID:4328

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4404,i,16710585221322798697,8586257254049248207,262144 --variations-seed-version --mojo-platform-channel-handle=4604 /prefetch:8
1⤵
PID:636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2920 -ip 2920
1⤵
PID:4936

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

3

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lwta15re.jvv.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1768-3-0x0000018DFCA60000-0x0000018DFCA7E000-memory.dmp

Filesize
120KB

Download
memory/1768-1-0x00007FFDA3233000-0x00007FFDA3235000-memory.dmp

Filesize
8KB

Download
memory/1768-0-0x0000018DFC690000-0x0000018DFC6A0000-memory.dmp

Filesize
64KB

Download
memory/1768-4-0x00007FFDA3230000-0x00007FFDA3CF1000-memory.dmp

Filesize
10.8MB

Download
memory/1768-5-0x0000018DFCA40000-0x0000018DFCA46000-memory.dmp

Filesize
24KB

Download
memory/1768-6-0x0000018DFECF0000-0x0000018DFEDC0000-memory.dmp

Filesize
832KB

Download
memory/1768-24-0x00007FFDA3230000-0x00007FFDA3CF1000-memory.dmp

Filesize
10.8MB

Download
memory/1768-2-0x0000018DFE2F0000-0x0000018DFE366000-memory.dmp

Filesize
472KB

Download
memory/1920-17-0x00000268F7A20000-0x00000268F7A42000-memory.dmp

Filesize
136KB

Download
memory/1920-18-0x00007FFDA3230000-0x00007FFDA3CF1000-memory.dmp

Filesize
10.8MB

Download
memory/1920-19-0x00007FFDA3230000-0x00007FFDA3CF1000-memory.dmp

Filesize
10.8MB

Download
memory/1920-22-0x00007FFDA3230000-0x00007FFDA3CF1000-memory.dmp

Filesize
10.8MB

Download
memory/1920-7-0x00007FFDA3230000-0x00007FFDA3CF1000-memory.dmp

Filesize
10.8MB

Download
memory/2920-23-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads