6cfbc35636edc4b6f29c017d38c3861a64165c3a6d78e348c53cae22ee19db08

Analysis

max time kernel
120s
max time network
16s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
01/09/2024, 08:37

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General

Target

d037518b72d14dbe71f18bb38e868190N.exe
Size

135KB
MD5

d037518b72d14dbe71f18bb38e868190
SHA1

e2b297a82c978a3b18b0ce33239123fc14e354c6
SHA256

6cfbc35636edc4b6f29c017d38c3861a64165c3a6d78e348c53cae22ee19db08
SHA512

bae1850e51c8d40a7a5fab271327c3049e8fb724818f58e04d20d32b0b0eb00a18051e95c51260dceb736b5666af7489c8d5544795bf9ac6eac587197b6d734a
SSDEEP

1536:UfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbV+nRRRRRRRRRRRRf:UVqoCl/YgjxEufVU0TbTyDDal0P

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-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
2376	explorer.exe
912	spoolsv.exe
2812	svchost.exe
2752	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
2520	d037518b72d14dbe71f18bb38e868190N.exe
2376	explorer.exe
912	spoolsv.exe
2812	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\themes\explorer.exe	d037518b72d14dbe71f18bb38e868190N.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 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d037518b72d14dbe71f18bb38e868190N.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

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
2768	schtasks.exe
1012	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2812	svchost.exe
2812	svchost.exe
2812	svchost.exe
2812	svchost.exe
2812	svchost.exe
2812	svchost.exe
2812	svchost.exe
2812	svchost.exe
2812	svchost.exe
2812	svchost.exe
2812	svchost.exe
2812	svchost.exe
2812	svchost.exe
2812	svchost.exe
2812	svchost.exe
2812	svchost.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2812	svchost.exe
2812	svchost.exe
2376	explorer.exe
2812	svchost.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2376	explorer.exe
2812	svchost.exe
2812	svchost.exe
2376	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2376	explorer.exe
2812	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2520	d037518b72d14dbe71f18bb38e868190N.exe
2520	d037518b72d14dbe71f18bb38e868190N.exe
2376	explorer.exe
2376	explorer.exe
912	spoolsv.exe
912	spoolsv.exe
2812	svchost.exe
2812	svchost.exe
2752	spoolsv.exe
2752	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 2376	2520	d037518b72d14dbe71f18bb38e868190N.exe	30
PID 2520 wrote to memory of 2376	2520	d037518b72d14dbe71f18bb38e868190N.exe	30
PID 2520 wrote to memory of 2376	2520	d037518b72d14dbe71f18bb38e868190N.exe	30
PID 2520 wrote to memory of 2376	2520	d037518b72d14dbe71f18bb38e868190N.exe	30
PID 2376 wrote to memory of 912	2376	explorer.exe	31
PID 2376 wrote to memory of 912	2376	explorer.exe	31
PID 2376 wrote to memory of 912	2376	explorer.exe	31
PID 2376 wrote to memory of 912	2376	explorer.exe	31
PID 912 wrote to memory of 2812	912	spoolsv.exe	32
PID 912 wrote to memory of 2812	912	spoolsv.exe	32
PID 912 wrote to memory of 2812	912	spoolsv.exe	32
PID 912 wrote to memory of 2812	912	spoolsv.exe	32
PID 2812 wrote to memory of 2752	2812	svchost.exe	33
PID 2812 wrote to memory of 2752	2812	svchost.exe	33
PID 2812 wrote to memory of 2752	2812	svchost.exe	33
PID 2812 wrote to memory of 2752	2812	svchost.exe	33
PID 2376 wrote to memory of 2932	2376	explorer.exe	34
PID 2376 wrote to memory of 2932	2376	explorer.exe	34
PID 2376 wrote to memory of 2932	2376	explorer.exe	34
PID 2376 wrote to memory of 2932	2376	explorer.exe	34
PID 2812 wrote to memory of 2768	2812	svchost.exe	35
PID 2812 wrote to memory of 2768	2812	svchost.exe	35
PID 2812 wrote to memory of 2768	2812	svchost.exe	35
PID 2812 wrote to memory of 2768	2812	svchost.exe	35
PID 2812 wrote to memory of 1012	2812	svchost.exe	38
PID 2812 wrote to memory of 1012	2812	svchost.exe	38
PID 2812 wrote to memory of 1012	2812	svchost.exe	38
PID 2812 wrote to memory of 1012	2812	svchost.exe	38

C:\Users\Admin\AppData\Local\Temp\d037518b72d14dbe71f18bb38e868190N.exe
"C:\Users\Admin\AppData\Local\Temp\d037518b72d14dbe71f18bb38e868190N.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:2520
- \??\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:2376
- - \??\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:912
  - - \??\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:2812
    - - \??\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:2752
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 08:39 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2768
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 08:40 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1012
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2932

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
0653cb09fe15a609090e48512ae6fbff

SHA1
3c2e3493b0f967655bd147733671b5f9e26d2814

SHA256
615650a3c1f3fb06ce5b10e4ab36c08fc17ce96017761549c31f215c76621d83

SHA512
4d173aeff7558feecf13fb6b31b21f1b9163f0e6b9031720dadbbd84cf1645826156421883cccdaa2d0e51c644dda13407b60ce0940cf4a44c00e3ac43612c7e

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

Filesize
135KB

MD5
26c6a36b48f7ee162bf86016c75aafb7

SHA1
9b3f956653fb0da794bdb0978312a7457c49aed7

SHA256
49484928fdd77d68bc75f98bcdf654e37da69138fd626915c33b879472140f9c

SHA512
77b4068c1cc66d04ef21fdf34189a0483c4cd0720b299efe91188be35e081a18fdfce89146e3272bc9de9c6ea79a5df5f51b8889cfe795c20d05f162f503ffe9

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
3a57e7f108ad3e6889f2fa622c8b92e3

SHA1
4086b98015d943ee4beaa6dbe54849b21693b7c7

SHA256
ec68859189a634b70c68a4cac0acaa7e2f7a7dba310def75420b7f90d7f83027

SHA512
c4f587eac33061adaa6c70c413859b52d3a9932d41477dd19ff6100b025fa473697b54b41de6cb5e6aa151b4ef132827b102aada61f911a3386401c911efe19e

Download Submit
memory/912-41-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2376-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2376-44-0x0000000000330000-0x000000000034F000-memory.dmp

Filesize
124KB

Download
memory/2520-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2520-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2752-40-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2812-35-0x0000000000370000-0x000000000038F000-memory.dmp

Filesize
124KB

Download
memory/2812-45-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2812-46-0x0000000000370000-0x000000000038F000-memory.dmp

Filesize
124KB

Download