aef795e47d4cad846dffb0bfd00ac4a26816478d8b8eb6a2e9014b380647937d

Analysis

max time kernel
120s
max time network
17s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-09-2024 08:14

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General

Target

43759c1fc4a47cb344f8481fd619dd70N.exe
Size

207KB
MD5

43759c1fc4a47cb344f8481fd619dd70
SHA1

25ecc4fc5c2e4c6eb6ec177df5936ecc5174c730
SHA256

aef795e47d4cad846dffb0bfd00ac4a26816478d8b8eb6a2e9014b380647937d
SHA512

30b0f26fae591e1e30092470402686bb8757345614040a6fe7767e2654c3a65f846f17b563fc9b67554fb98b7a764dae5c5c801aca09dd870deeae74f1cdeecd
SSDEEP

1536:/fsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbJdIC:/VqoCl/YgjxEufVU0TbTyDDalbr

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

Executes dropped EXE 4 IoCs

pid	Process
2488	explorer.exe
2248	spoolsv.exe
2272	svchost.exe
2864	spoolsv.exe

Loads dropped DLL 8 IoCs

pid	Process
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
2488	explorer.exe
2488	explorer.exe
2248	spoolsv.exe
2248	spoolsv.exe
2272	svchost.exe
2272	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"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	svchost.exe
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

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\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
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	43759c1fc4a47cb344f8481fd619dd70N.exe

System Location Discovery: System Language Discovery 1 TTPs 7 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	43759c1fc4a47cb344f8481fd619dd70N.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 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2748	schtasks.exe
1940	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
2488	explorer.exe
2488	explorer.exe
2488	explorer.exe
2488	explorer.exe
2488	explorer.exe
2488	explorer.exe
2488	explorer.exe
2488	explorer.exe
2488	explorer.exe
2488	explorer.exe
2488	explorer.exe
2488	explorer.exe
2488	explorer.exe
2488	explorer.exe
2488	explorer.exe
2488	explorer.exe
2272	svchost.exe
2272	svchost.exe
2272	svchost.exe
2272	svchost.exe
2272	svchost.exe
2272	svchost.exe
2272	svchost.exe
2272	svchost.exe
2272	svchost.exe
2272	svchost.exe
2272	svchost.exe
2272	svchost.exe
2272	svchost.exe
2272	svchost.exe
2272	svchost.exe
2272	svchost.exe
2488	explorer.exe
2488	explorer.exe
2488	explorer.exe
2272	svchost.exe
2272	svchost.exe
2272	svchost.exe
2488	explorer.exe
2272	svchost.exe
2488	explorer.exe
2488	explorer.exe
2272	svchost.exe
2272	svchost.exe
2488	explorer.exe
2272	svchost.exe
2488	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2272	svchost.exe
2488	explorer.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
1628	43759c1fc4a47cb344f8481fd619dd70N.exe
2488	explorer.exe
2488	explorer.exe
2248	spoolsv.exe
2248	spoolsv.exe
2272	svchost.exe
2272	svchost.exe
2864	spoolsv.exe
2864	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 2488	1628	43759c1fc4a47cb344f8481fd619dd70N.exe	31
PID 1628 wrote to memory of 2488	1628	43759c1fc4a47cb344f8481fd619dd70N.exe	31
PID 1628 wrote to memory of 2488	1628	43759c1fc4a47cb344f8481fd619dd70N.exe	31
PID 1628 wrote to memory of 2488	1628	43759c1fc4a47cb344f8481fd619dd70N.exe	31
PID 2488 wrote to memory of 2248	2488	explorer.exe	32
PID 2488 wrote to memory of 2248	2488	explorer.exe	32
PID 2488 wrote to memory of 2248	2488	explorer.exe	32
PID 2488 wrote to memory of 2248	2488	explorer.exe	32
PID 2248 wrote to memory of 2272	2248	spoolsv.exe	33
PID 2248 wrote to memory of 2272	2248	spoolsv.exe	33
PID 2248 wrote to memory of 2272	2248	spoolsv.exe	33
PID 2248 wrote to memory of 2272	2248	spoolsv.exe	33
PID 2272 wrote to memory of 2864	2272	svchost.exe	34
PID 2272 wrote to memory of 2864	2272	svchost.exe	34
PID 2272 wrote to memory of 2864	2272	svchost.exe	34
PID 2272 wrote to memory of 2864	2272	svchost.exe	34
PID 2488 wrote to memory of 2720	2488	explorer.exe	35
PID 2488 wrote to memory of 2720	2488	explorer.exe	35
PID 2488 wrote to memory of 2720	2488	explorer.exe	35
PID 2488 wrote to memory of 2720	2488	explorer.exe	35
PID 2272 wrote to memory of 2748	2272	svchost.exe	36
PID 2272 wrote to memory of 2748	2272	svchost.exe	36
PID 2272 wrote to memory of 2748	2272	svchost.exe	36
PID 2272 wrote to memory of 2748	2272	svchost.exe	36
PID 2272 wrote to memory of 1940	2272	svchost.exe	39
PID 2272 wrote to memory of 1940	2272	svchost.exe	39
PID 2272 wrote to memory of 1940	2272	svchost.exe	39
PID 2272 wrote to memory of 1940	2272	svchost.exe	39

C:\Users\Admin\AppData\Local\Temp\43759c1fc4a47cb344f8481fd619dd70N.exe
"C:\Users\Admin\AppData\Local\Temp\43759c1fc4a47cb344f8481fd619dd70N.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:1628
- \??\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:2488
- - \??\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:2248
  - - \??\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:2272
    - - \??\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:2864
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 08:16 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2748
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 08:17 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1940
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2720

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

\Windows\Resources\Themes\explorer.exe

Filesize
206KB

MD5
c39a1ae0feffd97beaa317ae13396e89

SHA1
cdd70ac90bd14097cfbf7fef40406ecfb9e1aa84

SHA256
de13db7a4062a98036509dcef8edde5e1fd828cb45efcefb0a92553aa4d331ba

SHA512
2a21ad223ce354111cb9100aaca572e04f65b63eab81d919e8a9ad8c0c51d8de730a41a81fc9ee1961f1eaab801e93426df6955f11e543a0d8f33b26b731a23d

Download Submit
\Windows\Resources\spoolsv.exe

Filesize
206KB

MD5
687e5dd1fa65c84c1bd79fc847d64d28

SHA1
4a302bb3c5af9feca8261df15c3131f23e1f096b

SHA256
3472e3ce0200c8c652fba8e5d77c2d92b047c159c609e359b97fd9c93109106b

SHA512
21b0375b517ecbf8b2a755efde4d516e71d258eb7431e003b89359ea8a035ef3c4cf0f5d9c97bdfa6b96f568da4373c222a0b8d45a47eb1f99ca34f650cf22d4

Download Submit
\Windows\Resources\svchost.exe

Filesize
206KB

MD5
2b5c4b134f9eb993b953e26ffdf3f35b

SHA1
eaf81813a9533d13f4679c4284ebdd720560f061

SHA256
88c6f1221e7308a479e1c6505d7588dc484d4b6443d991700746bea612fabd05

SHA512
7d878c62aa40819b02d1365a0845c2777951a3a9b48bfdfae5c05a53f0b4c3b9e3d5e6dc4fe64d97074f502a1f240235d2be2b61b92e6bbeaa168708fa892cc9

Download Submit
memory/1628-54-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1628-12-0x0000000000340000-0x000000000036F000-memory.dmp

Filesize
188KB

Download
memory/1628-0-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2248-40-0x0000000000530000-0x000000000055F000-memory.dmp

Filesize
188KB

Download
memory/2248-53-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2272-57-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2488-26-0x00000000003D0000-0x00000000003FF000-memory.dmp

Filesize
188KB

Download
memory/2488-55-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2488-56-0x00000000003D0000-0x00000000003FF000-memory.dmp

Filesize
188KB

Download
memory/2864-52-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download