855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07

Analysis

max time kernel
150s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-11-2024 00:57

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General

Target

855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
Size

135KB
MD5

64f801415647679b0378ce9b29a594d8
SHA1

1f94aa1b85e87e6f3d9d371d646acea0beed9de6
SHA256

855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07
SHA512

044805215988321a88f3724b37a007339731a79d55e980c7208e9cde2d39d832abb84a3eb2dffb281a4321b30af7ca841778a4ce32800793c17213cf7eb1fbb6
SSDEEP

1536:XfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbgc0:XVqoCl/YgjxEufVU0TbTyDDalX0

Score

10^/10

discovery evasion persistence

Malware Config

Signatures

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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe

Executes dropped EXE 4 IoCs

pid	Process
1148	explorer.exe
1940	spoolsv.exe
1316	svchost.exe
2772	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
1148	explorer.exe
1940	spoolsv.exe
1316	svchost.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\\resources\\themes\\explorer.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\explorer.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\explorer.exe	explorer.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
File opened for modification	\??\c:\windows\resources\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\svchost.exe	spoolsv.exe
File opened for modification	C:\Windows\Resources\tjud.exe	explorer.exe

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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2756	schtasks.exe
904	schtasks.exe
2336	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
1148	explorer.exe
1148	explorer.exe
1148	explorer.exe
1148	explorer.exe
1148	explorer.exe
1148	explorer.exe
1148	explorer.exe
1148	explorer.exe
1148	explorer.exe
1148	explorer.exe
1148	explorer.exe
1148	explorer.exe
1148	explorer.exe
1148	explorer.exe
1148	explorer.exe
1148	explorer.exe
1316	svchost.exe
1316	svchost.exe
1316	svchost.exe
1316	svchost.exe
1316	svchost.exe
1316	svchost.exe
1316	svchost.exe
1316	svchost.exe
1316	svchost.exe
1316	svchost.exe
1316	svchost.exe
1316	svchost.exe
1316	svchost.exe
1316	svchost.exe
1316	svchost.exe
1316	svchost.exe
1148	explorer.exe
1316	svchost.exe
1148	explorer.exe
1316	svchost.exe
1148	explorer.exe
1148	explorer.exe
1316	svchost.exe
1316	svchost.exe
1148	explorer.exe
1148	explorer.exe
1316	svchost.exe
1316	svchost.exe
1148	explorer.exe
1148	explorer.exe
1316	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
1316	svchost.exe
1148	explorer.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
1148	explorer.exe
1148	explorer.exe
1940	spoolsv.exe
1940	spoolsv.exe
1316	svchost.exe
1316	svchost.exe
2772	spoolsv.exe
2772	spoolsv.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2568 wrote to memory of 1148	2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe	30
PID 2568 wrote to memory of 1148	2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe	30
PID 2568 wrote to memory of 1148	2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe	30
PID 2568 wrote to memory of 1148	2568	855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe	30
PID 1148 wrote to memory of 1940	1148	explorer.exe	31
PID 1148 wrote to memory of 1940	1148	explorer.exe	31
PID 1148 wrote to memory of 1940	1148	explorer.exe	31
PID 1148 wrote to memory of 1940	1148	explorer.exe	31
PID 1940 wrote to memory of 1316	1940	spoolsv.exe	32
PID 1940 wrote to memory of 1316	1940	spoolsv.exe	32
PID 1940 wrote to memory of 1316	1940	spoolsv.exe	32
PID 1940 wrote to memory of 1316	1940	spoolsv.exe	32
PID 1316 wrote to memory of 2772	1316	svchost.exe	33
PID 1316 wrote to memory of 2772	1316	svchost.exe	33
PID 1316 wrote to memory of 2772	1316	svchost.exe	33
PID 1316 wrote to memory of 2772	1316	svchost.exe	33
PID 1148 wrote to memory of 2996	1148	explorer.exe	34
PID 1148 wrote to memory of 2996	1148	explorer.exe	34
PID 1148 wrote to memory of 2996	1148	explorer.exe	34
PID 1148 wrote to memory of 2996	1148	explorer.exe	34
PID 1316 wrote to memory of 2756	1316	svchost.exe	35
PID 1316 wrote to memory of 2756	1316	svchost.exe	35
PID 1316 wrote to memory of 2756	1316	svchost.exe	35
PID 1316 wrote to memory of 2756	1316	svchost.exe	35
PID 1316 wrote to memory of 904	1316	svchost.exe	39
PID 1316 wrote to memory of 904	1316	svchost.exe	39
PID 1316 wrote to memory of 904	1316	svchost.exe	39
PID 1316 wrote to memory of 904	1316	svchost.exe	39
PID 1316 wrote to memory of 2336	1316	svchost.exe	41
PID 1316 wrote to memory of 2336	1316	svchost.exe	41
PID 1316 wrote to memory of 2336	1316	svchost.exe	41
PID 1316 wrote to memory of 2336	1316	svchost.exe	41

C:\Users\Admin\AppData\Local\Temp\855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe
"C:\Users\Admin\AppData\Local\Temp\855219e8a3053596540245344f73bb6e7cf7d9f40da3caea1bc91d1a7cc0ba07.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2568
- \??\c:\windows\resources\themes\explorer.exe
  c:\windows\resources\themes\explorer.exe
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in System32 directory
  - 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:1148
- - \??\c:\windows\resources\spoolsv.exe
    c:\windows\resources\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1940
  - - \??\c:\windows\resources\svchost.exe
      c:\windows\resources\svchost.exe
      4⤵
      Modifies visiblity of hidden/system files in Explorer
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Drops file in System32 directory
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1316
    - - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:2772
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 00:59 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2756
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 01:00 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:904
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 01:01 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2336
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2996

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Resources\spoolsv.exe

Filesize
135KB

MD5
3d68a2f78b909c61e83500d5f0e42e22

SHA1
df47cc6cc7ba0bf30d536e15bec1b25bf8efdd70

SHA256
e4289f994b677c1e26a5dff7af76eeb8cbdf655187e9e55492bb4da0769254cc

SHA512
f1e8ad7d5c6fb287a46faa4574c0479a7b734a6ef1e89c147476fdd949eb788282cf8b783b6c3a3b00b564ffff9ae265571703e613e68e23a385a811a6b5e2ab

Download Submit
\Windows\Resources\Themes\explorer.exe

Filesize
135KB

MD5
2a7dd8363e5c5354c420828f22253f75

SHA1
92470c237cfe64a7504ec7268e72261f7a3aa91f

SHA256
82a06973e5ff07cb6013b845af38c17bc744e6432bba32d6a88e7318bc53c4a6

SHA512
47e7bc45d665f47c54d4e991068c1ed5166f858a05fae4ad9b86444bc2c7bd50f4bcb9c60351d57ffca065e75ddea61efd1395362db9358e2f8b67cfac958c18

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
91dd5c499b1783253088e1284332465a

SHA1
3292f8283486a19193996e80f1c974346d5448a8

SHA256
b604e7ddc7db90e2d0da192a9d746604f508f3b0c487a3dc8ab04b1ce688f466

SHA512
ea02ab5b33a3aaf3ceb59ff46d4e1a6f0e18b0d387269ee490d190e630b7353bd6ed68d5ebe781dc2951059328a0afefad1bcbee932eb2589aaaed54470f8f79

Download Submit
memory/1148-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1316-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1316-45-0x0000000000270000-0x000000000028F000-memory.dmp

Filesize
124KB

Download
memory/1940-30-0x0000000000320000-0x000000000033F000-memory.dmp

Filesize
124KB

Download
memory/1940-41-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2568-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2568-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2772-40-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download