1c939fa9a671d77f84658702d75a973c093dae31d042b80f58880e9ce2c3ad7d

Analysis

max time kernel
120s
max time network
118s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
18/08/2024, 01:13

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General

Target

bdc2c5c0240466671e0f52829e6fc910N.exe
Size

135KB
MD5

bdc2c5c0240466671e0f52829e6fc910
SHA1

29583fa846768870fa00329ccf3d0d1d5c22566e
SHA256

1c939fa9a671d77f84658702d75a973c093dae31d042b80f58880e9ce2c3ad7d
SHA512

fa6562230bf936f07395240dbae5aadd88c2472f954343a11f3d326934a00b6959798dd444662329cc9744e6e47aa10d8dbbced5e4182a10dca568cea6d229fb
SSDEEP

1536:UfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbVk7:UVqoCl/YgjxEufVU0TbTyDDalu7

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-1-5-21-2958949473-3205530200-1453100116-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
2400	explorer.exe
2396	spoolsv.exe
2164	svchost.exe
780	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2400	explorer.exe
2396	spoolsv.exe
2164	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	bdc2c5c0240466671e0f52829e6fc910N.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	bdc2c5c0240466671e0f52829e6fc910N.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
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
2968	schtasks.exe
2932	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2400	explorer.exe
2400	explorer.exe
2400	explorer.exe
2400	explorer.exe
2400	explorer.exe
2400	explorer.exe
2400	explorer.exe
2400	explorer.exe
2400	explorer.exe
2400	explorer.exe
2400	explorer.exe
2400	explorer.exe
2400	explorer.exe
2400	explorer.exe
2400	explorer.exe
2400	explorer.exe
2164	svchost.exe
2164	svchost.exe
2164	svchost.exe
2164	svchost.exe
2164	svchost.exe
2164	svchost.exe
2164	svchost.exe
2164	svchost.exe
2164	svchost.exe
2164	svchost.exe
2164	svchost.exe
2164	svchost.exe
2164	svchost.exe
2164	svchost.exe
2164	svchost.exe
2164	svchost.exe
2400	explorer.exe
2400	explorer.exe
2400	explorer.exe
2164	svchost.exe
2164	svchost.exe
2164	svchost.exe
2400	explorer.exe
2400	explorer.exe
2164	svchost.exe
2164	svchost.exe
2400	explorer.exe
2164	svchost.exe
2400	explorer.exe
2400	explorer.exe
2164	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2164	svchost.exe
2400	explorer.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2308	bdc2c5c0240466671e0f52829e6fc910N.exe
2400	explorer.exe
2400	explorer.exe
2396	spoolsv.exe
2396	spoolsv.exe
2164	svchost.exe
2164	svchost.exe
780	spoolsv.exe
780	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 2400	2308	bdc2c5c0240466671e0f52829e6fc910N.exe	30
PID 2308 wrote to memory of 2400	2308	bdc2c5c0240466671e0f52829e6fc910N.exe	30
PID 2308 wrote to memory of 2400	2308	bdc2c5c0240466671e0f52829e6fc910N.exe	30
PID 2308 wrote to memory of 2400	2308	bdc2c5c0240466671e0f52829e6fc910N.exe	30
PID 2400 wrote to memory of 2396	2400	explorer.exe	31
PID 2400 wrote to memory of 2396	2400	explorer.exe	31
PID 2400 wrote to memory of 2396	2400	explorer.exe	31
PID 2400 wrote to memory of 2396	2400	explorer.exe	31
PID 2396 wrote to memory of 2164	2396	spoolsv.exe	32
PID 2396 wrote to memory of 2164	2396	spoolsv.exe	32
PID 2396 wrote to memory of 2164	2396	spoolsv.exe	32
PID 2396 wrote to memory of 2164	2396	spoolsv.exe	32
PID 2164 wrote to memory of 780	2164	svchost.exe	33
PID 2164 wrote to memory of 780	2164	svchost.exe	33
PID 2164 wrote to memory of 780	2164	svchost.exe	33
PID 2164 wrote to memory of 780	2164	svchost.exe	33
PID 2400 wrote to memory of 2816	2400	explorer.exe	34
PID 2400 wrote to memory of 2816	2400	explorer.exe	34
PID 2400 wrote to memory of 2816	2400	explorer.exe	34
PID 2400 wrote to memory of 2816	2400	explorer.exe	34
PID 2164 wrote to memory of 2968	2164	svchost.exe	35
PID 2164 wrote to memory of 2968	2164	svchost.exe	35
PID 2164 wrote to memory of 2968	2164	svchost.exe	35
PID 2164 wrote to memory of 2968	2164	svchost.exe	35
PID 2164 wrote to memory of 2932	2164	svchost.exe	39
PID 2164 wrote to memory of 2932	2164	svchost.exe	39
PID 2164 wrote to memory of 2932	2164	svchost.exe	39
PID 2164 wrote to memory of 2932	2164	svchost.exe	39

C:\Users\Admin\AppData\Local\Temp\bdc2c5c0240466671e0f52829e6fc910N.exe
"C:\Users\Admin\AppData\Local\Temp\bdc2c5c0240466671e0f52829e6fc910N.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:2308
- \??\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:2400
- - \??\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:2396
  - - \??\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:2164
    - - \??\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:780
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 01:15 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2968
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 01:16 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2932
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2816

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
35a81c4a4db101a5bbdffd4deb061bc9

SHA1
166c41c98b976f3dc97683cc868558483786d09b

SHA256
303aba8c6130c4ed70648b01874e109c9103993e851d812689256a3f181efd7d

SHA512
719afa58cec0ae9c47f7a1738af72e06cd7458bd51ef8f576f48c4017d18d2ab0c2212806b4586910e3efce08b91b4a7b9b5bfd507d620f08a65ddb0ab48b56b

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

Filesize
135KB

MD5
2d11412947592777f79da76013e3a394

SHA1
3e4d33135fa671ca509b6b587e8ba4c8d651a695

SHA256
c616db717193393c48c6b4440b69b426cbba651176abff4b92fe1ae7f4986187

SHA512
d98becb7f304e1897c8fd9decd641f5bcbbeee08ea25ffae17f459c973fc9e5ec588d22a2b92fbd5b2369bf2d35b52830baf6c6a5c979141663da7cc7dffecb3

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
9447e576e7d9d6060de1cd8973872cf2

SHA1
7a763af5e0568e90f69c3e755fd4fa6c912ee2be

SHA256
4cc74557a34db51840f92c7687b2a6c2c29774d5b700ba8ab2b364f6dc2688ba

SHA512
384fc1f030f5103acd066c1857b4e8c0f8a77bec66f73d3e562c9f43a27753939993b39472e20a60908df923f06c8c6640d2b7f22b5eec5eb8a498debba79c3a

Download Submit
memory/780-40-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2164-35-0x0000000000460000-0x000000000047F000-memory.dmp

Filesize
124KB

Download
memory/2164-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2308-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2308-41-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2400-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download