f91c0323cc23fb30bcba9d99a718c44fafe9a96cdef1fbfbe67d770c12be861a

Analysis

max time kernel
120s
max time network
19s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
24-08-2024 15:06

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General

Target

61958c5a985322e46345112981438660N.exe
Size

135KB
MD5

61958c5a985322e46345112981438660
SHA1

f2bfc17b58773d6bdae7461635209085d6475960
SHA256

f91c0323cc23fb30bcba9d99a718c44fafe9a96cdef1fbfbe67d770c12be861a
SHA512

a3be6f59f06c6960d2aa23ce46974d02908908d629ecfcb3db499b0ea1366dd02fb76c343dc8aef8934c9d0b22f8ecffd4eb7aa2196d67960f515b223839545a
SSDEEP

1536:UfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbVO/:UVqoCl/YgjxEufVU0TbTyDDalg/

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
2828	explorer.exe
2760	spoolsv.exe
3056	svchost.exe
2764	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
2592	61958c5a985322e46345112981438660N.exe
2828	explorer.exe
2760	spoolsv.exe
3056	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	61958c5a985322e46345112981438660N.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	61958c5a985322e46345112981438660N.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
2800	schtasks.exe
3000	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
3056	svchost.exe
2828	explorer.exe
2828	explorer.exe
2828	explorer.exe
3056	svchost.exe
3056	svchost.exe
2828	explorer.exe
3056	svchost.exe
2828	explorer.exe
3056	svchost.exe
2828	explorer.exe
3056	svchost.exe
2828	explorer.exe
3056	svchost.exe
2828	explorer.exe
3056	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2828	explorer.exe
3056	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2592	61958c5a985322e46345112981438660N.exe
2592	61958c5a985322e46345112981438660N.exe
2828	explorer.exe
2828	explorer.exe
2760	spoolsv.exe
2760	spoolsv.exe
3056	svchost.exe
3056	svchost.exe
2764	spoolsv.exe
2764	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2592 wrote to memory of 2828	2592	61958c5a985322e46345112981438660N.exe	29
PID 2592 wrote to memory of 2828	2592	61958c5a985322e46345112981438660N.exe	29
PID 2592 wrote to memory of 2828	2592	61958c5a985322e46345112981438660N.exe	29
PID 2592 wrote to memory of 2828	2592	61958c5a985322e46345112981438660N.exe	29
PID 2828 wrote to memory of 2760	2828	explorer.exe	30
PID 2828 wrote to memory of 2760	2828	explorer.exe	30
PID 2828 wrote to memory of 2760	2828	explorer.exe	30
PID 2828 wrote to memory of 2760	2828	explorer.exe	30
PID 2760 wrote to memory of 3056	2760	spoolsv.exe	31
PID 2760 wrote to memory of 3056	2760	spoolsv.exe	31
PID 2760 wrote to memory of 3056	2760	spoolsv.exe	31
PID 2760 wrote to memory of 3056	2760	spoolsv.exe	31
PID 3056 wrote to memory of 2764	3056	svchost.exe	32
PID 3056 wrote to memory of 2764	3056	svchost.exe	32
PID 3056 wrote to memory of 2764	3056	svchost.exe	32
PID 3056 wrote to memory of 2764	3056	svchost.exe	32
PID 2828 wrote to memory of 2960	2828	explorer.exe	33
PID 2828 wrote to memory of 2960	2828	explorer.exe	33
PID 2828 wrote to memory of 2960	2828	explorer.exe	33
PID 2828 wrote to memory of 2960	2828	explorer.exe	33
PID 3056 wrote to memory of 2800	3056	svchost.exe	34
PID 3056 wrote to memory of 2800	3056	svchost.exe	34
PID 3056 wrote to memory of 2800	3056	svchost.exe	34
PID 3056 wrote to memory of 2800	3056	svchost.exe	34
PID 3056 wrote to memory of 3000	3056	svchost.exe	37
PID 3056 wrote to memory of 3000	3056	svchost.exe	37
PID 3056 wrote to memory of 3000	3056	svchost.exe	37
PID 3056 wrote to memory of 3000	3056	svchost.exe	37

C:\Users\Admin\AppData\Local\Temp\61958c5a985322e46345112981438660N.exe
"C:\Users\Admin\AppData\Local\Temp\61958c5a985322e46345112981438660N.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:2592
- \??\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:2828
- - \??\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:2760
  - - \??\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:3056
    - - \??\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:2764
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 15:08 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2800
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 15:09 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:3000
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2960

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
133a78b14d2e1416ae882dee27b9cb43

SHA1
9b3a9918a481e540d70a213f0a03f3a46398fd68

SHA256
55df2248e6ac804f60255c7adec61763c7ca5592c7562bd2441d9380d81850a3

SHA512
51b23e384f4f32e2a0c26394acd967be30a7e4aece056c0302307e719faa03953daeef42e7f9990d0df3606586e9a3cac11d5c6f0cf31998bb05d609d95b6f85

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

Filesize
135KB

MD5
5867505ec3f60dfcecf64171b7f7f936

SHA1
7fe9c24302e69004fa4a841d78cbf400b2ee24cf

SHA256
c295b61b697c15f3701abab10a7a291db2887b638243d1bccdb50b357a456d0d

SHA512
3ae454f00a8ec74d867e84704696185fefa6b719a4241ed7ae8dbcee4a2d97c836c729d77505181107c1d69d4a5a559f80d784e22a1466b24e67bcb36b25bfca

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
b20abe596318ad63a5558678a5750395

SHA1
a42832fd705befa1cb9b0f4b356ccf26a3625f17

SHA256
0711b22b53b0198def476bf2fd988072992307a3e4b016753df322db314985df

SHA512
2eaed0a9bbe79e514be8493b7d70dafefc4a1e2e96e773ddfe16bda5989e609c2e53fbc6817bca199fbdc24b343bf806be0606c25b7f521fe0fa084921b876c8

Download Submit
memory/2592-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2592-12-0x00000000003C0000-0x00000000003DF000-memory.dmp

Filesize
124KB

Download
memory/2592-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2760-30-0x0000000000340000-0x000000000035F000-memory.dmp

Filesize
124KB

Download
memory/2760-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2764-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2828-13-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2828-45-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3056-46-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download