b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09e

Analysis

max time kernel
120s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20/01/2025, 09:14

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General

Target

b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
Size

206KB
MD5

d9b79a2638e6b7f6df618ffc260a4f50
SHA1

7f52dfd1a1c9d6cfd1b8b2b4eb30bef21d57fa81
SHA256

b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09e
SHA512

4f39e6407730520139e03ead2e1f8ad2d1d7ebb7bd1ddf304934b87937e4f6b274b002d4c9990754364187134e0b052100d0dd95b7224af332ca9cb8866977f1
SSDEEP

1536:/fsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbJdylllllllllllld:/VqoCl/YgjxEufVU0TbTyDDalbA

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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
3012	explorer.exe
2768	spoolsv.exe
2692	svchost.exe
2652	spoolsv.exe

Loads dropped DLL 8 IoCs

pid	Process
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
3012	explorer.exe
3012	explorer.exe
2768	spoolsv.exe
2768	spoolsv.exe
2692	svchost.exe
2692	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	explorer.exe
File opened for modification	C:\Windows\SysWOW64\explorer.exe	svchost.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
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	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
File opened for modification	\??\c:\windows\resources\spoolsv.exe	explorer.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.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

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
1272	schtasks.exe
2504	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
2692	svchost.exe
3012	explorer.exe
3012	explorer.exe
3012	explorer.exe
2692	svchost.exe
2692	svchost.exe
3012	explorer.exe
2692	svchost.exe
3012	explorer.exe
2692	svchost.exe
3012	explorer.exe
2692	svchost.exe
3012	explorer.exe
2692	svchost.exe
3012	explorer.exe
2692	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
3012	explorer.exe
2692	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
3012	explorer.exe
3012	explorer.exe
2768	spoolsv.exe
2768	spoolsv.exe
2692	svchost.exe
2692	svchost.exe
2652	spoolsv.exe
2652	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 3012	2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe	28
PID 2240 wrote to memory of 3012	2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe	28
PID 2240 wrote to memory of 3012	2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe	28
PID 2240 wrote to memory of 3012	2240	b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe	28
PID 3012 wrote to memory of 2768	3012	explorer.exe	29
PID 3012 wrote to memory of 2768	3012	explorer.exe	29
PID 3012 wrote to memory of 2768	3012	explorer.exe	29
PID 3012 wrote to memory of 2768	3012	explorer.exe	29
PID 2768 wrote to memory of 2692	2768	spoolsv.exe	30
PID 2768 wrote to memory of 2692	2768	spoolsv.exe	30
PID 2768 wrote to memory of 2692	2768	spoolsv.exe	30
PID 2768 wrote to memory of 2692	2768	spoolsv.exe	30
PID 2692 wrote to memory of 2652	2692	svchost.exe	31
PID 2692 wrote to memory of 2652	2692	svchost.exe	31
PID 2692 wrote to memory of 2652	2692	svchost.exe	31
PID 2692 wrote to memory of 2652	2692	svchost.exe	31
PID 3012 wrote to memory of 2660	3012	explorer.exe	32
PID 3012 wrote to memory of 2660	3012	explorer.exe	32
PID 3012 wrote to memory of 2660	3012	explorer.exe	32
PID 3012 wrote to memory of 2660	3012	explorer.exe	32
PID 2692 wrote to memory of 2504	2692	svchost.exe	33
PID 2692 wrote to memory of 2504	2692	svchost.exe	33
PID 2692 wrote to memory of 2504	2692	svchost.exe	33
PID 2692 wrote to memory of 2504	2692	svchost.exe	33
PID 2692 wrote to memory of 1272	2692	svchost.exe	38
PID 2692 wrote to memory of 1272	2692	svchost.exe	38
PID 2692 wrote to memory of 1272	2692	svchost.exe	38
PID 2692 wrote to memory of 1272	2692	svchost.exe	38

C:\Users\Admin\AppData\Local\Temp\b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.exe
"C:\Users\Admin\AppData\Local\Temp\b940c9916cffd184e0f26b2e8c3c12e326f5c7bea8d1cd9fe5af68953ca4d09eN.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:2240
- \??\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:3012
- - \??\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:2768
  - - \??\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:2692
    - - \??\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:2652
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 09:16 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2504
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 09:17 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1272
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2660

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
e74bdbace13696e28262b97979da6b4b

SHA1
25dca8c586032c4b2184f68bf872667b783dcab1

SHA256
c39ad196afb43e403f19d39315470337151e8c0b2cb2e44c29c21a710f68b90c

SHA512
c88c888ed64f7905930b8171b1453fc11cd7cb72241e51fc169ef80036ea7df275d85a832168977a4fc955ac00e39ff69061eca0cdeff6f55dcd933016619495

Download Submit
\Windows\Resources\spoolsv.exe

Filesize
206KB

MD5
785964f6942f83265c6c2cc64eeb036d

SHA1
3af4d23c17cc71d06abce5ddbed6cc1ea123c854

SHA256
be60a44bea61d659e50057c1e7a36bb2b17ef606ae05e8cfa0060d4df90cfc08

SHA512
477f409577b8385422eca6dd66a8fdccb51f3184e90103d17db4345dcc28cdf4db2c720123d8b82f4df053138874b40075b81b391a14fa45c416af25356856f8

Download Submit
\Windows\Resources\svchost.exe

Filesize
206KB

MD5
719e41002a49cf38aa93d6c96d88277a

SHA1
9a499d12b8b73d6d842852e3f145d84b03efa77b

SHA256
fbfcd9bc50eb9fadbfeb2b58798c924a9cf551ba8b303657c0b807d255f5f7de

SHA512
8bb70bdeba6181dc960867167b1d966897304a0fb7419170b51940c741737a53097e2d2693f2e7d0bcadfa642e4ec4eacdeb24102a7489c43983b3c07e41aced

Download Submit
memory/2240-0-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2240-13-0x00000000004B0000-0x00000000004DF000-memory.dmp

Filesize
188KB

Download
memory/2240-54-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2652-52-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2692-56-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2768-40-0x0000000000330000-0x000000000035F000-memory.dmp

Filesize
188KB

Download
memory/2768-53-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3012-26-0x0000000000340000-0x000000000036F000-memory.dmp

Filesize
188KB

Download
memory/3012-55-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download