5db5387e4c24ae87ea0fd4a905d8eecde1a898f6aadd4cdb6b52cbb756088627

Analysis

max time kernel
150s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
16/08/2024, 23:25

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

5db5387e4c24ae87ea0fd4a905d8eecde1a898f6aadd4cdb6b52cbb756088627.exe
Size

206KB
MD5

a305277341951bd694f90b7663fcc150
SHA1

fdda95f6b8ac829d49b25042ea884ed527388af4
SHA256

5db5387e4c24ae87ea0fd4a905d8eecde1a898f6aadd4cdb6b52cbb756088627
SHA512

379131604af217f4ca58dc763c0a501ffa68bfcd8d9465734a73d28a1f5ac086d71cc57000594107f56c5969dbdc108875ba51c7ebf56b6f581fe021f43fc61b
SSDEEP

3072:zvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6unN:zvEN2U+T6i5LirrllHy4HUcMQY6A

Score

10^/10

discovery evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	svchost.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Boot or Logon Autostart Execution: Active Setup 2 TTPs 8 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	explorer.exe

Executes dropped EXE 4 IoCs

pid	Process
2432	explorer.exe
4864	spoolsv.exe
4348	svchost.exe
64	spoolsv.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	svchost.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\system\explorer.exe	5db5387e4c24ae87ea0fd4a905d8eecde1a898f6aadd4cdb6b52cbb756088627.exe
File opened for modification	\??\c:\windows\system\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	spoolsv.exe
File opened for modification	\??\c:\windows\system\explorer.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	svchost.exe
File opened for modification	C:\Windows\system\udsys.exe	explorer.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 8 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	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5db5387e4c24ae87ea0fd4a905d8eecde1a898f6aadd4cdb6b52cbb756088627.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2260	5db5387e4c24ae87ea0fd4a905d8eecde1a898f6aadd4cdb6b52cbb756088627.exe
2260	5db5387e4c24ae87ea0fd4a905d8eecde1a898f6aadd4cdb6b52cbb756088627.exe
2432	explorer.exe
2432	explorer.exe
2432	explorer.exe
2432	explorer.exe
2432	explorer.exe
2432	explorer.exe
4348	svchost.exe
4348	svchost.exe
4348	svchost.exe
4348	svchost.exe
2432	explorer.exe
2432	explorer.exe
4348	svchost.exe
4348	svchost.exe
2432	explorer.exe
2432	explorer.exe
4348	svchost.exe
4348	svchost.exe
2432	explorer.exe
2432	explorer.exe
4348	svchost.exe
4348	svchost.exe
2432	explorer.exe
2432	explorer.exe
4348	svchost.exe
4348	svchost.exe
2432	explorer.exe
2432	explorer.exe
4348	svchost.exe
4348	svchost.exe
2432	explorer.exe
2432	explorer.exe
4348	svchost.exe
4348	svchost.exe
2432	explorer.exe
2432	explorer.exe
4348	svchost.exe
4348	svchost.exe
2432	explorer.exe
2432	explorer.exe
4348	svchost.exe
4348	svchost.exe
2432	explorer.exe
2432	explorer.exe
4348	svchost.exe
4348	svchost.exe
2432	explorer.exe
2432	explorer.exe
4348	svchost.exe
4348	svchost.exe
2432	explorer.exe
2432	explorer.exe
4348	svchost.exe
4348	svchost.exe
2432	explorer.exe
2432	explorer.exe
4348	svchost.exe
4348	svchost.exe
2432	explorer.exe
2432	explorer.exe
4348	svchost.exe
4348	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2432	explorer.exe
4348	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2260	5db5387e4c24ae87ea0fd4a905d8eecde1a898f6aadd4cdb6b52cbb756088627.exe
2260	5db5387e4c24ae87ea0fd4a905d8eecde1a898f6aadd4cdb6b52cbb756088627.exe
2432	explorer.exe
2432	explorer.exe
4864	spoolsv.exe
4864	spoolsv.exe
4348	svchost.exe
4348	svchost.exe
64	spoolsv.exe
64	spoolsv.exe
2432	explorer.exe
2432	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2260 wrote to memory of 2432	2260	5db5387e4c24ae87ea0fd4a905d8eecde1a898f6aadd4cdb6b52cbb756088627.exe	85
PID 2260 wrote to memory of 2432	2260	5db5387e4c24ae87ea0fd4a905d8eecde1a898f6aadd4cdb6b52cbb756088627.exe	85
PID 2260 wrote to memory of 2432	2260	5db5387e4c24ae87ea0fd4a905d8eecde1a898f6aadd4cdb6b52cbb756088627.exe	85
PID 2432 wrote to memory of 4864	2432	explorer.exe	86
PID 2432 wrote to memory of 4864	2432	explorer.exe	86
PID 2432 wrote to memory of 4864	2432	explorer.exe	86
PID 4864 wrote to memory of 4348	4864	spoolsv.exe	87
PID 4864 wrote to memory of 4348	4864	spoolsv.exe	87
PID 4864 wrote to memory of 4348	4864	spoolsv.exe	87
PID 4348 wrote to memory of 64	4348	svchost.exe	88
PID 4348 wrote to memory of 64	4348	svchost.exe	88
PID 4348 wrote to memory of 64	4348	svchost.exe	88
PID 4348 wrote to memory of 3752	4348	svchost.exe	90
PID 4348 wrote to memory of 3752	4348	svchost.exe	90
PID 4348 wrote to memory of 3752	4348	svchost.exe	90
PID 4348 wrote to memory of 4472	4348	svchost.exe	108
PID 4348 wrote to memory of 4472	4348	svchost.exe	108
PID 4348 wrote to memory of 4472	4348	svchost.exe	108
PID 4348 wrote to memory of 1592	4348	svchost.exe	115
PID 4348 wrote to memory of 1592	4348	svchost.exe	115
PID 4348 wrote to memory of 1592	4348	svchost.exe	115

C:\Users\Admin\AppData\Local\Temp\5db5387e4c24ae87ea0fd4a905d8eecde1a898f6aadd4cdb6b52cbb756088627.exe
"C:\Users\Admin\AppData\Local\Temp\5db5387e4c24ae87ea0fd4a905d8eecde1a898f6aadd4cdb6b52cbb756088627.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2260
- \??\c:\windows\system\explorer.exe
  c:\windows\system\explorer.exe
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2432
- - \??\c:\windows\system\spoolsv.exe
    c:\windows\system\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4864
  - - \??\c:\windows\system\svchost.exe
      c:\windows\system\svchost.exe
      4⤵
      Modifies WinLogon for persistence
      Modifies visiblity of hidden/system files in Explorer
      Boot or Logon Autostart Execution: Active Setup
      Executes dropped EXE
      Adds Run key to start application
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4348
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:64
    - - C:\Windows\SysWOW64\at.exe
        
        at 23:27 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:3752
    - - C:\Windows\SysWOW64\at.exe
        
        at 23:28 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4472
    - - C:\Windows\SysWOW64\at.exe
        
        at 23:29 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:1592

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\mrsys.exe

Filesize
206KB

MD5
a7fff6f7dd3d91fe076160f11919b47f

SHA1
bb14bd304cdfd477c1370267af1f90b8bbf0a0fc

SHA256
23a018191d1f84d5d1ce11a1018849e8be3ca73a1b2063580174907e3c81ecc8

SHA512
22d3c3dc572f34f9c9fbe8c3c63b10dc8b7fd38e0c036da43f5bc11dba38f770270e80bc3fca229feb7993d6189f20bbd62666c8fb059b491b483829064fe917

Download Submit
C:\Windows\System\explorer.exe

Filesize
206KB

MD5
ccd20b929730ed4489bb3b309a85ff0f

SHA1
7c3999a5db89c307e85b557abed928476566eccb

SHA256
f03d8b50ed46069080330ba6e7f43ebc90d4f4c9ac2fe57d0b0901b7f9e3d3e9

SHA512
cbd54dacaa098bf2c944b3e48dee4094d3f3e178ea98f8c2cccd82795d54ba7ebc8232f1f41cdd220df9d47551a25c55dd51eb46faecb56d2973c4004aeafc9e

Download Submit
C:\Windows\System\spoolsv.exe

Filesize
207KB

MD5
c591da5ec2529f7e53bc19bc07ed8b1b

SHA1
4c4eb5bf767a976d2d9ee3dc2227590e65ff60e5

SHA256
520db39ff14c2b404f34440f30336d707f81fc93d6e0599d8437cf268e31b258

SHA512
7ea5c2df4d8d2bad0d7115d74b298081e0ccb2bd100f97a496a6df952ed216b8122e5bab3edf85ec0fe3141d1c2b9f0d384735d10b68372f394e79de4ef97fde

Download Submit
C:\Windows\System\svchost.exe

Filesize
206KB

MD5
679e492f599ac64d8229ea7112feaf8c

SHA1
4750d89dcbd8012c7c6d7ed5ec0d3bc24ee7f112

SHA256
1b13403d6407634cc62edb5b005e85c7a0e9000a4a50ac2f12e0db5b9e50924f

SHA512
fce21725b539bef8280f5108df27dc5186b55fb9d06139300db7e392395a9cf341b876afbd60e864e92bcfd3ff59a6f14d537aaaf66e2ad454ede39248275208

Download Submit