0742b44b245affa4d76e5b90e8b647f72be79c8cbbc9b419f29509606bfa03ff

Analysis

max time kernel
150s
max time network
107s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
27/05/2024, 18:32

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General

Target

0742b44b245affa4d76e5b90e8b647f72be79c8cbbc9b419f29509606bfa03ff.exe
Size

66KB
MD5

a4b05dbb75c8eec38f583b931c430a20
SHA1

7d0636576d3dbb1a27bcd897d41e9e949a493552
SHA256

0742b44b245affa4d76e5b90e8b647f72be79c8cbbc9b419f29509606bfa03ff
SHA512

765f0a10bf8aae54e2e18b777ccdf5727c3f69029289baa635c6526dab15c75c0cb2ee65a4dac062edf7d724e7ae7c6b558e70fa7aab5740083350627ba01fd3
SSDEEP

1536:EHfetdklPp+07gDSrB8Xru2zGeJxgawTzpXzrDJrXi7CCCCCCCCCCCCCCCCCCCC7:IeklMMYJhqezw/pXzH9iP

Score

10^/10

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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Modifies Installed Components in the registry 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
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
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
1592	explorer.exe
3124	spoolsv.exe
6040	svchost.exe
5612	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	0742b44b245affa4d76e5b90e8b647f72be79c8cbbc9b419f29509606bfa03ff.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

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2996	0742b44b245affa4d76e5b90e8b647f72be79c8cbbc9b419f29509606bfa03ff.exe
2996	0742b44b245affa4d76e5b90e8b647f72be79c8cbbc9b419f29509606bfa03ff.exe
1592	explorer.exe
1592	explorer.exe
1592	explorer.exe
1592	explorer.exe
1592	explorer.exe
1592	explorer.exe
1592	explorer.exe
6040	svchost.exe
1592	explorer.exe
6040	svchost.exe
6040	svchost.exe
6040	svchost.exe
6040	svchost.exe
1592	explorer.exe
1592	explorer.exe
6040	svchost.exe
6040	svchost.exe
1592	explorer.exe
1592	explorer.exe
6040	svchost.exe
1592	explorer.exe
6040	svchost.exe
1592	explorer.exe
6040	svchost.exe
1592	explorer.exe
6040	svchost.exe
1592	explorer.exe
6040	svchost.exe
1592	explorer.exe
6040	svchost.exe
1592	explorer.exe
6040	svchost.exe
1592	explorer.exe
1592	explorer.exe
6040	svchost.exe
6040	svchost.exe
1592	explorer.exe
1592	explorer.exe
6040	svchost.exe
6040	svchost.exe
1592	explorer.exe
1592	explorer.exe
6040	svchost.exe
6040	svchost.exe
6040	svchost.exe
1592	explorer.exe
6040	svchost.exe
1592	explorer.exe
1592	explorer.exe
6040	svchost.exe
1592	explorer.exe
6040	svchost.exe
1592	explorer.exe
6040	svchost.exe
1592	explorer.exe
6040	svchost.exe
1592	explorer.exe
6040	svchost.exe
1592	explorer.exe
6040	svchost.exe
1592	explorer.exe
6040	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
1592	explorer.exe
6040	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2996	0742b44b245affa4d76e5b90e8b647f72be79c8cbbc9b419f29509606bfa03ff.exe
2996	0742b44b245affa4d76e5b90e8b647f72be79c8cbbc9b419f29509606bfa03ff.exe
1592	explorer.exe
1592	explorer.exe
3124	spoolsv.exe
3124	spoolsv.exe
6040	svchost.exe
6040	svchost.exe
5612	spoolsv.exe
5612	spoolsv.exe
1592	explorer.exe
1592	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 1592	2996	0742b44b245affa4d76e5b90e8b647f72be79c8cbbc9b419f29509606bfa03ff.exe	83
PID 2996 wrote to memory of 1592	2996	0742b44b245affa4d76e5b90e8b647f72be79c8cbbc9b419f29509606bfa03ff.exe	83
PID 2996 wrote to memory of 1592	2996	0742b44b245affa4d76e5b90e8b647f72be79c8cbbc9b419f29509606bfa03ff.exe	83
PID 1592 wrote to memory of 3124	1592	explorer.exe	84
PID 1592 wrote to memory of 3124	1592	explorer.exe	84
PID 1592 wrote to memory of 3124	1592	explorer.exe	84
PID 3124 wrote to memory of 6040	3124	spoolsv.exe	86
PID 3124 wrote to memory of 6040	3124	spoolsv.exe	86
PID 3124 wrote to memory of 6040	3124	spoolsv.exe	86
PID 6040 wrote to memory of 5612	6040	svchost.exe	87
PID 6040 wrote to memory of 5612	6040	svchost.exe	87
PID 6040 wrote to memory of 5612	6040	svchost.exe	87
PID 6040 wrote to memory of 4104	6040	svchost.exe	88
PID 6040 wrote to memory of 4104	6040	svchost.exe	88
PID 6040 wrote to memory of 4104	6040	svchost.exe	88
PID 6040 wrote to memory of 5700	6040	svchost.exe	109
PID 6040 wrote to memory of 5700	6040	svchost.exe	109
PID 6040 wrote to memory of 5700	6040	svchost.exe	109
PID 6040 wrote to memory of 1920	6040	svchost.exe	120
PID 6040 wrote to memory of 1920	6040	svchost.exe	120
PID 6040 wrote to memory of 1920	6040	svchost.exe	120

C:\Users\Admin\AppData\Local\Temp\0742b44b245affa4d76e5b90e8b647f72be79c8cbbc9b419f29509606bfa03ff.exe
"C:\Users\Admin\AppData\Local\Temp\0742b44b245affa4d76e5b90e8b647f72be79c8cbbc9b419f29509606bfa03ff.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2996
- \??\c:\windows\system\explorer.exe
  c:\windows\system\explorer.exe
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - Modifies Installed Components in the registry
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1592
- - \??\c:\windows\system\spoolsv.exe
    c:\windows\system\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3124
  - - \??\c:\windows\system\svchost.exe
      c:\windows\system\svchost.exe
      4⤵
      Modifies WinLogon for persistence
      Modifies visiblity of hidden/system files in Explorer
      Modifies Installed Components in the registry
      Executes dropped EXE
      Adds Run key to start application
      Drops file in Windows directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:6040
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:5612
    - - C:\Windows\SysWOW64\at.exe
        
        at 18:34 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:4104
    - - C:\Windows\SysWOW64\at.exe
        
        at 18:35 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:5700
    - - C:\Windows\SysWOW64\at.exe
        
        at 18:36 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:1920

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
66KB

MD5
8be9ae60bcb978511f9a0a5fba91086a

SHA1
f076f238fa3929cb3c83699c78c22f89dde5047a

SHA256
1d5a3c58f252b579ebf424f31a8be3047613519f9812a192dd567386e35fa67b

SHA512
3c8a215456d987bad5a1df830793da49699979239c2b9424f7bd1e7ff297bc4af588c6cc36e5b424d928ab80c325f7f5daeea33c0bf49dd7f843ecbc61da64c5

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

Filesize
66KB

MD5
cfcc804cc2a61fa1e9f2724a4c2435b1

SHA1
20d43da8e400598c06ad0db0fcdd6e19e989350a

SHA256
5b42bea9c56fa3c433e1b36f832968cabddaaffef5e9a49646d70707692857f6

SHA512
f9e4b13940b10f5b077bfedc12478406342daf8988e1b9d5c1b0e490ca568342b320e5200459c0c209ad106ab5baa609fb2309166321797d55d935c25d06adcb

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

Filesize
66KB

MD5
37935e88377734403c84fbc82d9eab14

SHA1
ec7c972d620cd18a59a1f6cd076636cccb0c6889

SHA256
f4b6cbb1e1144239ae59370ae6350b68ff346704cf8c65d488f58e4d575d6621

SHA512
063399344ad729197e51bb7f932b2535fe3c45cbd3ab857a22bad55f44d9f2c69a0dac8fcbd213e6395d857c86b6d66a4a539daacb73102499da15a66b5b3826

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

Filesize
66KB

MD5
82abe62c272e643cb43fdc8e2e1b4a0e

SHA1
58aadd4383b9f9fb14e9a780b38616663a4d26f3

SHA256
2c05c98efd9aaf4078059427a7c71c42d401a146e2634034304326de181f58b5

SHA512
98fc3c177c6845bb625bbc80582f1c1d4f71f86d24413897f64c355d9c82bb7d78a5580abb9036320d46a6974ddc40fcbe76a4961ef10ce0b7f96b6198c653de

Download Submit
memory/1592-68-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1592-57-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1592-12-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1592-14-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1592-15-0x0000000074FC0000-0x000000007511D000-memory.dmp

Filesize
1.4MB

Download
memory/1592-18-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2996-54-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2996-0-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2996-1-0x00000000001C0000-0x00000000001C4000-memory.dmp

Filesize
16KB

Download
memory/2996-3-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2996-5-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/2996-2-0x0000000074FC0000-0x000000007511D000-memory.dmp

Filesize
1.4MB

Download
memory/2996-55-0x0000000000401000-0x000000000042E000-memory.dmp

Filesize
180KB

Download
memory/3124-53-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/3124-26-0x0000000074FC0000-0x000000007511D000-memory.dmp

Filesize
1.4MB

Download
memory/3124-30-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/5612-49-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/5612-43-0x0000000074FC0000-0x000000007511D000-memory.dmp

Filesize
1.4MB

Download
memory/6040-37-0x0000000074FC0000-0x000000007511D000-memory.dmp

Filesize
1.4MB

Download
memory/6040-59-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download