3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91

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 09:20

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General

Target

3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
Size

207KB
MD5

5eeb32580397170c9042578c10851cb0
SHA1

06464f5ef2e8666e33b92d8f4759368734ef89be
SHA256

3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91
SHA512

d93a47b32dd77e14a9e64a0db7566dc473048c68263a25a334ffa8fb087705e615b7d3c33c9145f1828f8c609e37c43bc309bd4265dd03bab19d808bf210a648
SSDEEP

1536:/fsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbJd+:/VqoCl/YgjxEufVU0TbTyDDalb+

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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe

Executes dropped EXE 4 IoCs

pid	Process
372	explorer.exe
2668	spoolsv.exe
2560	svchost.exe
2648	spoolsv.exe

Loads dropped DLL 8 IoCs

pid	Process
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
372	explorer.exe
372	explorer.exe
2668	spoolsv.exe
2668	spoolsv.exe
2560	svchost.exe
2560	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	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	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.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
2504	schtasks.exe
2832	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
372	explorer.exe
372	explorer.exe
372	explorer.exe
372	explorer.exe
372	explorer.exe
372	explorer.exe
372	explorer.exe
372	explorer.exe
372	explorer.exe
372	explorer.exe
372	explorer.exe
372	explorer.exe
372	explorer.exe
372	explorer.exe
372	explorer.exe
372	explorer.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
2560	svchost.exe
372	explorer.exe
372	explorer.exe
372	explorer.exe
2560	svchost.exe
2560	svchost.exe
372	explorer.exe
2560	svchost.exe
372	explorer.exe
2560	svchost.exe
372	explorer.exe
2560	svchost.exe
372	explorer.exe
2560	svchost.exe
372	explorer.exe
2560	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
372	explorer.exe
2560	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
372	explorer.exe
372	explorer.exe
2668	spoolsv.exe
2668	spoolsv.exe
2560	svchost.exe
2560	svchost.exe
2648	spoolsv.exe
2648	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2628 wrote to memory of 372	2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe	31
PID 2628 wrote to memory of 372	2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe	31
PID 2628 wrote to memory of 372	2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe	31
PID 2628 wrote to memory of 372	2628	3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe	31
PID 372 wrote to memory of 2668	372	explorer.exe	32
PID 372 wrote to memory of 2668	372	explorer.exe	32
PID 372 wrote to memory of 2668	372	explorer.exe	32
PID 372 wrote to memory of 2668	372	explorer.exe	32
PID 2668 wrote to memory of 2560	2668	spoolsv.exe	33
PID 2668 wrote to memory of 2560	2668	spoolsv.exe	33
PID 2668 wrote to memory of 2560	2668	spoolsv.exe	33
PID 2668 wrote to memory of 2560	2668	spoolsv.exe	33
PID 2560 wrote to memory of 2648	2560	svchost.exe	34
PID 2560 wrote to memory of 2648	2560	svchost.exe	34
PID 2560 wrote to memory of 2648	2560	svchost.exe	34
PID 2560 wrote to memory of 2648	2560	svchost.exe	34
PID 372 wrote to memory of 2656	372	explorer.exe	35
PID 372 wrote to memory of 2656	372	explorer.exe	35
PID 372 wrote to memory of 2656	372	explorer.exe	35
PID 372 wrote to memory of 2656	372	explorer.exe	35
PID 2560 wrote to memory of 2504	2560	svchost.exe	36
PID 2560 wrote to memory of 2504	2560	svchost.exe	36
PID 2560 wrote to memory of 2504	2560	svchost.exe	36
PID 2560 wrote to memory of 2504	2560	svchost.exe	36
PID 2560 wrote to memory of 2832	2560	svchost.exe	39
PID 2560 wrote to memory of 2832	2560	svchost.exe	39
PID 2560 wrote to memory of 2832	2560	svchost.exe	39
PID 2560 wrote to memory of 2832	2560	svchost.exe	39

C:\Users\Admin\AppData\Local\Temp\3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.exe
"C:\Users\Admin\AppData\Local\Temp\3c3716814480e4d811c5b83efbd55a32454d0a5d090caa1ee4f2176ed475ed91N.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:2628
- \??\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:372
- - \??\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:2668
  - - \??\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:2560
    - - \??\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:2648
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 09:22 /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 09:23 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2832
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2656

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
0181d534ead39f9057570c63d49f92e3

SHA1
f96853961da62e893e2b00017c590d811aea1888

SHA256
c3cb01aed86a9ae2531e60236f1a8a43386efa4258b97a16dd21c26e5a635e43

SHA512
81a941d3ea2883b38dcd9f6d81e30081a9b5e6cb81c089c8caa556a78edf269b5755f3658e9ff5fdc6de879adc1c41c64610a982dbbeac833934bfe54db66617

Download Submit
\Windows\Resources\spoolsv.exe

Filesize
206KB

MD5
7775b0e897c08cc936c3bc37662fefcd

SHA1
15adc0b2f19059b3ce4a8038d0a27e910e6c9921

SHA256
7bebfa8cb60ee936248bb3db4063bdd795f9b500307d236596a069cb5e7d0017

SHA512
f7e51d9be3d81e585b7e3cc570dbe1eae964b1c5dba6baea9bb51c1994b83dcc2a7e7e97e246a4963c1a71deaa435b1617d4faacbd8474839d0d3bb55a866666

Download Submit
\Windows\Resources\svchost.exe

Filesize
206KB

MD5
7891f2f4c22f04298f23beb6f02ed7da

SHA1
a65e7357a74287fad5f835fc3e7b09b60d256a84

SHA256
e177b1ba80bc7152c9f2ac6f21a629eb4a317a511fa7ac1d731c6903d9106a26

SHA512
efcdeec8b549c4ed087623ec330e45482c17462054f87a52be2dda804b0fccd5c82cb4101f66f3697c8da40c00caba5a4f45a45a4ec771fe007e813eedc0fd20

Download Submit
memory/372-55-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/372-56-0x0000000000380000-0x00000000003AF000-memory.dmp

Filesize
188KB

Download
memory/2560-57-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2628-54-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2628-0-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2628-13-0x0000000000520000-0x000000000054F000-memory.dmp

Filesize
188KB

Download
memory/2628-14-0x0000000000520000-0x000000000054F000-memory.dmp

Filesize
188KB

Download
memory/2648-52-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2668-53-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2668-40-0x00000000003D0000-0x00000000003FF000-memory.dmp

Filesize
188KB

Download