f0e5d9e447e7f27be769f30db5b5dadfceded3262ec5c2b2106b30f2611c56f0

Analysis

max time kernel
119s
max time network
16s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
25/08/2024, 10:51

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General

Target

6a33b1596acf9e96bd245ad298120660N.exe
Size

135KB
MD5

6a33b1596acf9e96bd245ad298120660
SHA1

9c645414335d3cbc255bd960d6c1cfb4ef6d23dc
SHA256

f0e5d9e447e7f27be769f30db5b5dadfceded3262ec5c2b2106b30f2611c56f0
SHA512

f3a1baa120b4318b9e4661f8064bb385de4b959694a86b296bcf527f410494780a600c894d24b088ccdd3f870dfb0aee13597e1fc9a7bcaecdde3f54db68998b
SSDEEP

1536:UfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbVcTpbqr0B:UVqoCl/YgjxEufVU0TbTyDDaliB

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-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe

Executes dropped EXE 4 IoCs

pid	Process
2276	explorer.exe
672	spoolsv.exe
2332	svchost.exe
2152	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
2200	6a33b1596acf9e96bd245ad298120660N.exe
2276	explorer.exe
672	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\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	6a33b1596acf9e96bd245ad298120660N.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	6a33b1596acf9e96bd245ad298120660N.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
1436	schtasks.exe
492	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2276	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
2276	explorer.exe
2332	svchost.exe
2332	svchost.exe
2276	explorer.exe
2276	explorer.exe
2276	explorer.exe
2332	svchost.exe
2332	svchost.exe
2276	explorer.exe
2332	svchost.exe
2276	explorer.exe
2332	svchost.exe
2276	explorer.exe
2276	explorer.exe
2332	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2332	svchost.exe
2276	explorer.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2200	6a33b1596acf9e96bd245ad298120660N.exe
2200	6a33b1596acf9e96bd245ad298120660N.exe
2276	explorer.exe
2276	explorer.exe
672	spoolsv.exe
672	spoolsv.exe
2332	svchost.exe
2332	svchost.exe
2152	spoolsv.exe
2152	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2200 wrote to memory of 2276	2200	6a33b1596acf9e96bd245ad298120660N.exe	28
PID 2200 wrote to memory of 2276	2200	6a33b1596acf9e96bd245ad298120660N.exe	28
PID 2200 wrote to memory of 2276	2200	6a33b1596acf9e96bd245ad298120660N.exe	28
PID 2200 wrote to memory of 2276	2200	6a33b1596acf9e96bd245ad298120660N.exe	28
PID 2276 wrote to memory of 672	2276	explorer.exe	29
PID 2276 wrote to memory of 672	2276	explorer.exe	29
PID 2276 wrote to memory of 672	2276	explorer.exe	29
PID 2276 wrote to memory of 672	2276	explorer.exe	29
PID 672 wrote to memory of 2332	672	spoolsv.exe	30
PID 672 wrote to memory of 2332	672	spoolsv.exe	30
PID 672 wrote to memory of 2332	672	spoolsv.exe	30
PID 672 wrote to memory of 2332	672	spoolsv.exe	30
PID 2332 wrote to memory of 2152	2332	svchost.exe	31
PID 2332 wrote to memory of 2152	2332	svchost.exe	31
PID 2332 wrote to memory of 2152	2332	svchost.exe	31
PID 2332 wrote to memory of 2152	2332	svchost.exe	31
PID 2276 wrote to memory of 1656	2276	explorer.exe	32
PID 2276 wrote to memory of 1656	2276	explorer.exe	32
PID 2276 wrote to memory of 1656	2276	explorer.exe	32
PID 2276 wrote to memory of 1656	2276	explorer.exe	32
PID 2332 wrote to memory of 1436	2332	svchost.exe	33
PID 2332 wrote to memory of 1436	2332	svchost.exe	33
PID 2332 wrote to memory of 1436	2332	svchost.exe	33
PID 2332 wrote to memory of 1436	2332	svchost.exe	33
PID 2332 wrote to memory of 492	2332	svchost.exe	38
PID 2332 wrote to memory of 492	2332	svchost.exe	38
PID 2332 wrote to memory of 492	2332	svchost.exe	38
PID 2332 wrote to memory of 492	2332	svchost.exe	38

C:\Users\Admin\AppData\Local\Temp\6a33b1596acf9e96bd245ad298120660N.exe
"C:\Users\Admin\AppData\Local\Temp\6a33b1596acf9e96bd245ad298120660N.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:2200
- \??\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:2276
- - \??\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:672
  - - \??\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:2152
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 10:53 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1436
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 10:54 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:492
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:1656

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
cd27ee48c0d38960c0404b42f67ad653

SHA1
0f7739e49b26add72df1e2f2ea0bf6453029a115

SHA256
b1bb4df93de9e46df869fcec309d6f3e31247bde73346ed0ca8e7e309049196e

SHA512
6aa007b430b6264634488325da49fe19f8f315adc6d03c91fe214e9f1f5995dc4e14dd830b9d8e7a6284866b1edb9771a32080f83f7affdcd8628f4b5a6573f6

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

Filesize
135KB

MD5
917e06a54a6f22ffa5c0b6c7235ab122

SHA1
5c0c03e22f41102a1a5c63c184b24ac377caeb77

SHA256
5b44dce2e0db909752592cffd6b23840416771c487caab4aaae68388e60a9636

SHA512
5a9b44a066319b3e6cdbbcffc5af9ce9404063c107ce67c0a4e0aba4993d3e37e93e52a8c93aa8da086403fd70d4783fdcce9d61fc64ff0dd2aaf798c8324268

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
3cc04515ab12a920e335cd5c31d8b2d0

SHA1
c94973679012444363f619fe6996f5f59d23b44a

SHA256
dbf819388ca38e466bf4af56d6210c76ac3c02ad8c3d1b5ecc47b0b2a684115e

SHA512
6d4e586a45851fef509bebb8c23fb6dc9e4de7cafb9ff2205005c57ffdadec85444be9e26b81a33d9a6cd31ec5469f4132444dcc01bd720810e61584a2cad2bb

Download Submit
memory/672-31-0x00000000003C0000-0x00000000003DF000-memory.dmp

Filesize
124KB

Download
memory/672-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2152-41-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2200-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2200-8-0x00000000004B0000-0x00000000004CF000-memory.dmp

Filesize
124KB

Download
memory/2200-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2276-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2332-45-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2332-46-0x00000000002F0000-0x000000000030F000-memory.dmp

Filesize
124KB

Download