fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68

Analysis

max time kernel
120s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-10-2024 01:09

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General

Target

fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
Size

135KB
MD5

7cfac3074c665252bdcf11d5f2d0fd20
SHA1

62c99a5ad322e77cf31d80a92809647bbcbd6203
SHA256

fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68
SHA512

7abf066a55c4c7ce99ce1369fa905eff9dd9d2063e396a2984d85f5e47b68e6174b46b6d4e2fb8dd9ce7e7469c742f10e7307fd4dfc45a182a0ddea591a081cf
SSDEEP

1536:UfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbVVKa:UVqoCl/YgjxEufVU0TbTyDDalLKa

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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
3036	explorer.exe
2756	spoolsv.exe
2212	svchost.exe
2668	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3036	explorer.exe
2756	spoolsv.exe
2212	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\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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.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	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.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
2552	schtasks.exe
1300	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3036	explorer.exe
3036	explorer.exe
3036	explorer.exe
3036	explorer.exe
3036	explorer.exe
3036	explorer.exe
3036	explorer.exe
3036	explorer.exe
3036	explorer.exe
3036	explorer.exe
3036	explorer.exe
3036	explorer.exe
3036	explorer.exe
3036	explorer.exe
3036	explorer.exe
3036	explorer.exe
2212	svchost.exe
2212	svchost.exe
2212	svchost.exe
2212	svchost.exe
2212	svchost.exe
2212	svchost.exe
2212	svchost.exe
2212	svchost.exe
2212	svchost.exe
2212	svchost.exe
2212	svchost.exe
2212	svchost.exe
2212	svchost.exe
2212	svchost.exe
2212	svchost.exe
2212	svchost.exe
3036	explorer.exe
3036	explorer.exe
3036	explorer.exe
2212	svchost.exe
2212	svchost.exe
3036	explorer.exe
2212	svchost.exe
3036	explorer.exe
2212	svchost.exe
3036	explorer.exe
2212	svchost.exe
3036	explorer.exe
2212	svchost.exe
3036	explorer.exe
2212	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
3036	explorer.exe
2212	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
3036	explorer.exe
3036	explorer.exe
2756	spoolsv.exe
2756	spoolsv.exe
2212	svchost.exe
2212	svchost.exe
2668	spoolsv.exe
2668	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 3036	3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe	31
PID 3024 wrote to memory of 3036	3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe	31
PID 3024 wrote to memory of 3036	3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe	31
PID 3024 wrote to memory of 3036	3024	fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe	31
PID 3036 wrote to memory of 2756	3036	explorer.exe	32
PID 3036 wrote to memory of 2756	3036	explorer.exe	32
PID 3036 wrote to memory of 2756	3036	explorer.exe	32
PID 3036 wrote to memory of 2756	3036	explorer.exe	32
PID 2756 wrote to memory of 2212	2756	spoolsv.exe	33
PID 2756 wrote to memory of 2212	2756	spoolsv.exe	33
PID 2756 wrote to memory of 2212	2756	spoolsv.exe	33
PID 2756 wrote to memory of 2212	2756	spoolsv.exe	33
PID 2212 wrote to memory of 2668	2212	svchost.exe	34
PID 2212 wrote to memory of 2668	2212	svchost.exe	34
PID 2212 wrote to memory of 2668	2212	svchost.exe	34
PID 2212 wrote to memory of 2668	2212	svchost.exe	34
PID 3036 wrote to memory of 2332	3036	explorer.exe	35
PID 3036 wrote to memory of 2332	3036	explorer.exe	35
PID 3036 wrote to memory of 2332	3036	explorer.exe	35
PID 3036 wrote to memory of 2332	3036	explorer.exe	35
PID 2212 wrote to memory of 2552	2212	svchost.exe	36
PID 2212 wrote to memory of 2552	2212	svchost.exe	36
PID 2212 wrote to memory of 2552	2212	svchost.exe	36
PID 2212 wrote to memory of 2552	2212	svchost.exe	36
PID 2212 wrote to memory of 1300	2212	svchost.exe	39
PID 2212 wrote to memory of 1300	2212	svchost.exe	39
PID 2212 wrote to memory of 1300	2212	svchost.exe	39
PID 2212 wrote to memory of 1300	2212	svchost.exe	39

C:\Users\Admin\AppData\Local\Temp\fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.exe
"C:\Users\Admin\AppData\Local\Temp\fb885d8facb11669cec4eab2f2293a420deab266a3981b5af75f7a594559df68N.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:3024
- \??\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:3036
- - \??\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:2756
  - - \??\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:2212
    - - \??\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:2668
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 01:11 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2552
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 01:12 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1300
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2332

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
c7fb4f16df440110877cd079a7c5bca5

SHA1
133bbceb9394345b5b935453df62c55adf28d162

SHA256
032d9ee6872b6529960896a946f6947459e3afa40a1c9ad4085951e2213aa7ab

SHA512
f95626bee9a50d8935c5172d13dc056cbee40b26df06811e41e13afde1a3e65c3da4ff8100d4d8f82c5a641cd90bda1ad9bd2d5034ec120664d17536ee875a9e

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

Filesize
135KB

MD5
0f4e0072a69e6c5774704f01c044ef9d

SHA1
0392a54cd6a275f8b7d2abb1a0a50a6caab93c05

SHA256
2373ee8dac7e01f045aecd1cb8f996e25740fceedb5bb379e28131535f96bdd9

SHA512
0ca7f9db45ded77cdbb80e807dab68f90b01fdc68948d5683c193b18926d4dd4f6eddf90c6ee5d12ed347a16fab84206945102186439d27eaf66de2c5c8bce9f

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
0ec2d7461ee7b720569b9af6452290ae

SHA1
85bc5c4b4262ae95bdf3d764f8405976cb26f436

SHA256
1414647c92f877afaa69a31522d4e2dbe89765cf42fddbb2ebaa933d9ba1d413

SHA512
20be1a82ed451bb6f030439cb4617575f9becba5da601b81e3f0c2b5cd84c32acec3810a6e82fea836f897431a9cf530448a9f3582c2293168e2933e9d1a1d8a

Download Submit
memory/2212-36-0x0000000000280000-0x000000000029F000-memory.dmp

Filesize
124KB

Download
memory/2212-45-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2212-46-0x0000000000280000-0x000000000029F000-memory.dmp

Filesize
124KB

Download
memory/2668-41-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2756-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3024-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3024-8-0x00000000003C0000-0x00000000003DF000-memory.dmp

Filesize
124KB

Download
memory/3024-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3036-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download