0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237

Analysis

max time kernel
120s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
20/11/2024, 05:04

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General

Target

0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
Size

135KB
MD5

3856a3ac3804e53533e3969214399e70
SHA1

0df88880988081ae64eef6467fa98c2c7cf5861d
SHA256

0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237
SHA512

d7a829ef6d320a15c208acf70cc32529478ca8681304fb0f50f98626dbfef4a9379b6c7fd4510f634e73335d2df13abb3c89022e33e60c832f54383ced4f50b2
SSDEEP

1536:UfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbVSB:UVqoCl/YgjxEufVU0TbTyDDalgB

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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
652	explorer.exe
2872	spoolsv.exe
2332	svchost.exe
2924	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
652	explorer.exe
2872	spoolsv.exe
2332	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	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.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	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.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

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
2780	schtasks.exe
2168	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
652	explorer.exe
652	explorer.exe
652	explorer.exe
652	explorer.exe
652	explorer.exe
652	explorer.exe
652	explorer.exe
652	explorer.exe
652	explorer.exe
652	explorer.exe
652	explorer.exe
652	explorer.exe
652	explorer.exe
652	explorer.exe
652	explorer.exe
652	explorer.exe
2332	svchost.exe
2332	svchost.exe
2332	svchost.exe
2332	svchost.exe
2332	svchost.exe
2332	svchost.exe
2332	svchost.exe
2332	svchost.exe
2332	svchost.exe
2332	svchost.exe
2332	svchost.exe
2332	svchost.exe
2332	svchost.exe
2332	svchost.exe
2332	svchost.exe
2332	svchost.exe
652	explorer.exe
652	explorer.exe
652	explorer.exe
2332	svchost.exe
2332	svchost.exe
652	explorer.exe
2332	svchost.exe
2332	svchost.exe
652	explorer.exe
652	explorer.exe
2332	svchost.exe
652	explorer.exe
2332	svchost.exe
652	explorer.exe
2332	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
652	explorer.exe
2332	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
652	explorer.exe
652	explorer.exe
2872	spoolsv.exe
2872	spoolsv.exe
2332	svchost.exe
2332	svchost.exe
2924	spoolsv.exe
2924	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 652	3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe	29
PID 3012 wrote to memory of 652	3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe	29
PID 3012 wrote to memory of 652	3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe	29
PID 3012 wrote to memory of 652	3012	0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe	29
PID 652 wrote to memory of 2872	652	explorer.exe	30
PID 652 wrote to memory of 2872	652	explorer.exe	30
PID 652 wrote to memory of 2872	652	explorer.exe	30
PID 652 wrote to memory of 2872	652	explorer.exe	30
PID 2872 wrote to memory of 2332	2872	spoolsv.exe	31
PID 2872 wrote to memory of 2332	2872	spoolsv.exe	31
PID 2872 wrote to memory of 2332	2872	spoolsv.exe	31
PID 2872 wrote to memory of 2332	2872	spoolsv.exe	31
PID 2332 wrote to memory of 2924	2332	svchost.exe	32
PID 2332 wrote to memory of 2924	2332	svchost.exe	32
PID 2332 wrote to memory of 2924	2332	svchost.exe	32
PID 2332 wrote to memory of 2924	2332	svchost.exe	32
PID 652 wrote to memory of 1084	652	explorer.exe	33
PID 652 wrote to memory of 1084	652	explorer.exe	33
PID 652 wrote to memory of 1084	652	explorer.exe	33
PID 652 wrote to memory of 1084	652	explorer.exe	33
PID 2332 wrote to memory of 2780	2332	svchost.exe	34
PID 2332 wrote to memory of 2780	2332	svchost.exe	34
PID 2332 wrote to memory of 2780	2332	svchost.exe	34
PID 2332 wrote to memory of 2780	2332	svchost.exe	34
PID 2332 wrote to memory of 2168	2332	svchost.exe	37
PID 2332 wrote to memory of 2168	2332	svchost.exe	37
PID 2332 wrote to memory of 2168	2332	svchost.exe	37
PID 2332 wrote to memory of 2168	2332	svchost.exe	37

C:\Users\Admin\AppData\Local\Temp\0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.exe
"C:\Users\Admin\AppData\Local\Temp\0fc9be39fbeb9a2673dfa3ad0dba31c46717a6d8289bbca08d34416152b8a237N.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:3012
- \??\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:652
- - \??\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:2872
  - - \??\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:2332
    - - \??\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:2924
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 05:06 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2780
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 05:07 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2168
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:1084

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
42d8e563c4cfb684ec4fc26e64ccaa1e

SHA1
1728f85658cb241fd3ade0879bb442a47a3f592f

SHA256
0f6b4b5a2aefc552ec28724d0370796422725987deae32be03378c68fa36aa6b

SHA512
c9c51938c268f02ba1abb987870f2fe33f04756810bf8011c76c5d10072a008721777e72226f84559a676d07f837d00d55bddc1c61f59cf67d3b7ad8908ed6ba

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

Filesize
135KB

MD5
17374ceff400da34a0a5db7f0ada41b7

SHA1
29cb9264e20ccc219c61357986231c06971d4a86

SHA256
97cef08ad86aea6797ec24b90394149eadefac843221ab6aa58058c55688cfbc

SHA512
e16eff0ebab1b7fd177f8d09e152c21be12e05b9daa96ca39feefb7cbbb8be37ddccef66085baff189ae5d7c159df82cee0ba33c1cb6a6110022bb215414530c

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
72440985ea6ea2c545bb1616f875ba8c

SHA1
16ffe9138d94c66d697d2c6dcb5d076a97f2836c

SHA256
3132f2a734ba7e52d8f9d7a34b17d9b0ecea5a61aad6c60aeafa389ff4f968ad

SHA512
0ed9c7f1a64a2266a9d666305f74e379464d23bf595b7c8a36bbe5cc022bb5784b0f84c47b3710f7b8d00cd3c25e82c96230a711808fcf50e5d1595a07bd2185

Download Submit
memory/652-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2332-35-0x0000000000280000-0x000000000029F000-memory.dmp

Filesize
124KB

Download
memory/2332-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2332-45-0x0000000000280000-0x000000000029F000-memory.dmp

Filesize
124KB

Download
memory/2872-41-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2924-40-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3012-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3012-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download