ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
19/09/2024, 03:14

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General

Target

ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
Size

206KB
MD5

2731775d08985129baadefc546eb7e06
SHA1

c74b532c5e5854324c900664b883ba5e9f91c486
SHA256

ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559
SHA512

5c4637ba9c5f7a71497732c74c704fa68f9b51454a7f4c1b333d8187a26365afd44f8550735caeb4df32b653090a36ab0d9704a366aeeaa3dfd4cc34a01a5a5b
SSDEEP

1536:/fsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbJdS:/VqoCl/YgjxEufVU0TbTyDDalbS

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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe

Executes dropped EXE 4 IoCs

pid	Process
2732	explorer.exe
2668	spoolsv.exe
2184	svchost.exe
2712	spoolsv.exe

Loads dropped DLL 8 IoCs

pid	Process
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2732	explorer.exe
2732	explorer.exe
2668	spoolsv.exe
2668	spoolsv.exe
2184	svchost.exe
2184	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"	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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.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\tjud.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
File opened for modification	\??\c:\windows\resources\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\svchost.exe	spoolsv.exe

System Location Discovery: System Language Discovery 1 TTPs 8 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	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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2000	schtasks.exe
1780	schtasks.exe
544	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2732	explorer.exe
2732	explorer.exe
2732	explorer.exe
2732	explorer.exe
2732	explorer.exe
2732	explorer.exe
2732	explorer.exe
2732	explorer.exe
2732	explorer.exe
2732	explorer.exe
2732	explorer.exe
2732	explorer.exe
2732	explorer.exe
2732	explorer.exe
2732	explorer.exe
2732	explorer.exe
2184	svchost.exe
2184	svchost.exe
2184	svchost.exe
2184	svchost.exe
2184	svchost.exe
2184	svchost.exe
2184	svchost.exe
2184	svchost.exe
2184	svchost.exe
2184	svchost.exe
2184	svchost.exe
2184	svchost.exe
2184	svchost.exe
2184	svchost.exe
2184	svchost.exe
2184	svchost.exe
2732	explorer.exe
2184	svchost.exe
2184	svchost.exe
2732	explorer.exe
2732	explorer.exe
2732	explorer.exe
2732	explorer.exe
2184	svchost.exe
2184	svchost.exe
2732	explorer.exe
2184	svchost.exe
2732	explorer.exe
2184	svchost.exe
2732	explorer.exe
2732	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2732	explorer.exe
2184	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
2732	explorer.exe
2732	explorer.exe
2668	spoolsv.exe
2668	spoolsv.exe
2184	svchost.exe
2184	svchost.exe
2712	spoolsv.exe
2712	spoolsv.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2636 wrote to memory of 2732	2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe	30
PID 2636 wrote to memory of 2732	2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe	30
PID 2636 wrote to memory of 2732	2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe	30
PID 2636 wrote to memory of 2732	2636	ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe	30
PID 2732 wrote to memory of 2668	2732	explorer.exe	31
PID 2732 wrote to memory of 2668	2732	explorer.exe	31
PID 2732 wrote to memory of 2668	2732	explorer.exe	31
PID 2732 wrote to memory of 2668	2732	explorer.exe	31
PID 2668 wrote to memory of 2184	2668	spoolsv.exe	32
PID 2668 wrote to memory of 2184	2668	spoolsv.exe	32
PID 2668 wrote to memory of 2184	2668	spoolsv.exe	32
PID 2668 wrote to memory of 2184	2668	spoolsv.exe	32
PID 2184 wrote to memory of 2712	2184	svchost.exe	33
PID 2184 wrote to memory of 2712	2184	svchost.exe	33
PID 2184 wrote to memory of 2712	2184	svchost.exe	33
PID 2184 wrote to memory of 2712	2184	svchost.exe	33
PID 2732 wrote to memory of 2608	2732	explorer.exe	34
PID 2732 wrote to memory of 2608	2732	explorer.exe	34
PID 2732 wrote to memory of 2608	2732	explorer.exe	34
PID 2732 wrote to memory of 2608	2732	explorer.exe	34
PID 2184 wrote to memory of 2000	2184	svchost.exe	35
PID 2184 wrote to memory of 2000	2184	svchost.exe	35
PID 2184 wrote to memory of 2000	2184	svchost.exe	35
PID 2184 wrote to memory of 2000	2184	svchost.exe	35
PID 2184 wrote to memory of 1780	2184	svchost.exe	39
PID 2184 wrote to memory of 1780	2184	svchost.exe	39
PID 2184 wrote to memory of 1780	2184	svchost.exe	39
PID 2184 wrote to memory of 1780	2184	svchost.exe	39
PID 2184 wrote to memory of 544	2184	svchost.exe	41
PID 2184 wrote to memory of 544	2184	svchost.exe	41
PID 2184 wrote to memory of 544	2184	svchost.exe	41
PID 2184 wrote to memory of 544	2184	svchost.exe	41

C:\Users\Admin\AppData\Local\Temp\ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.exe
"C:\Users\Admin\AppData\Local\Temp\ef3bb99d589cb9c2eab7daa5fa43c5ae849b1b51a7de7239c52e4b0dd28b4559.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:2636
- \??\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:2732
- - \??\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:2184
    - - \??\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:2712
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 03:16 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2000
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 03:17 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1780
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 03:18 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:544
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2608

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
207KB

MD5
d0f7b31c03eb641d36093cd27a8c5174

SHA1
3b32a2b475a79c6e343f004353c8092d653297be

SHA256
59205009ec51b9449d0b6d0478868454a5e37ffa12753574401b749c443ff9ec

SHA512
89f75c8b17c3b35d26d79e39aa98d9b3614c0a4d55b35ef403a84df92bd4c1ff331493e71de8f0c564bd8e3488ec1a59259f6d7d28f60307eaa126e3381f3560

Download Submit
\Windows\Resources\spoolsv.exe

Filesize
206KB

MD5
755f669a6120e5aa69eaf6e0b1662f9b

SHA1
c420ad45274a21f187ea61f630d33e7aee482d9e

SHA256
d2708fe3de36d673b2700cc3962327b96f1daf11ce06a06d338f9d0738a162e5

SHA512
cf79d68ea3e170089654677ce64a17bf4bd6aa5ce207f4372e4046e05ee56257cf943884bb639e4773b64d2e4961856535476cbb86c9891b2f8747dfb71d6d0f

Download Submit
\Windows\Resources\svchost.exe

Filesize
207KB

MD5
dede05f9ac67b1c238649f9a029140f5

SHA1
f64b5abfee4333e361327a5c8d4aeb6bd5cb06c4

SHA256
458223b4209021227c7301a2d1abf827da7fd6d86fd3dccc886079f2c1e539b2

SHA512
6bb867e519f7d2ca5eb3f6a7a54147864c2e11a8f53c04cf47af4f41ea7e2d60e87c64503725f4993144a03bf07d875e8c7f4a78b4cefa112e9509161e7e6623

Download Submit
memory/2184-57-0x0000000000430000-0x000000000045F000-memory.dmp

Filesize
188KB

Download
memory/2184-56-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2636-13-0x0000000000520000-0x000000000054F000-memory.dmp

Filesize
188KB

Download
memory/2636-54-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2636-0-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2636-12-0x0000000000520000-0x000000000054F000-memory.dmp

Filesize
188KB

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

Filesize
188KB

Download
memory/2712-52-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2732-28-0x00000000002C0000-0x00000000002EF000-memory.dmp

Filesize
188KB

Download
memory/2732-55-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download