1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9

Analysis

max time kernel
120s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05/10/2024, 18:08

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General

Target

1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
Size

135KB
MD5

d0a5c53dc39fa7bf974ea5c8e05ee610
SHA1

3bb8ba99bb1feca0006edac03ee4661b65150ecd
SHA256

1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9
SHA512

84e6284292081a05aafa5a075b117d944c35b36145a530d1b74fa872f38c781648b421fd1acc86e4287449a3d2019c1d73b3af2bdd9ba2892848503d87ebc4cb
SSDEEP

1536:XfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbgsnu:XVqoCl/YgjxEufVU0TbTyDDalJu

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-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
2740	explorer.exe
2832	spoolsv.exe
2608	svchost.exe
2840	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2740	explorer.exe
2832	spoolsv.exe
2608	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\tjud.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.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 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	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	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.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
1664	schtasks.exe
2076	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2740	explorer.exe
2740	explorer.exe
2740	explorer.exe
2740	explorer.exe
2740	explorer.exe
2740	explorer.exe
2740	explorer.exe
2740	explorer.exe
2740	explorer.exe
2740	explorer.exe
2740	explorer.exe
2740	explorer.exe
2740	explorer.exe
2740	explorer.exe
2740	explorer.exe
2740	explorer.exe
2608	svchost.exe
2608	svchost.exe
2608	svchost.exe
2608	svchost.exe
2608	svchost.exe
2608	svchost.exe
2608	svchost.exe
2608	svchost.exe
2608	svchost.exe
2608	svchost.exe
2608	svchost.exe
2608	svchost.exe
2608	svchost.exe
2608	svchost.exe
2608	svchost.exe
2608	svchost.exe
2740	explorer.exe
2740	explorer.exe
2740	explorer.exe
2740	explorer.exe
2608	svchost.exe
2608	svchost.exe
2740	explorer.exe
2608	svchost.exe
2740	explorer.exe
2740	explorer.exe
2608	svchost.exe
2740	explorer.exe
2608	svchost.exe
2740	explorer.exe
2608	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2740	explorer.exe
2608	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
2740	explorer.exe
2740	explorer.exe
2832	spoolsv.exe
2832	spoolsv.exe
2608	svchost.exe
2608	svchost.exe
2840	spoolsv.exe
2840	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2784 wrote to memory of 2740	2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe	30
PID 2784 wrote to memory of 2740	2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe	30
PID 2784 wrote to memory of 2740	2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe	30
PID 2784 wrote to memory of 2740	2784	1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe	30
PID 2740 wrote to memory of 2832	2740	explorer.exe	31
PID 2740 wrote to memory of 2832	2740	explorer.exe	31
PID 2740 wrote to memory of 2832	2740	explorer.exe	31
PID 2740 wrote to memory of 2832	2740	explorer.exe	31
PID 2832 wrote to memory of 2608	2832	spoolsv.exe	32
PID 2832 wrote to memory of 2608	2832	spoolsv.exe	32
PID 2832 wrote to memory of 2608	2832	spoolsv.exe	32
PID 2832 wrote to memory of 2608	2832	spoolsv.exe	32
PID 2608 wrote to memory of 2840	2608	svchost.exe	33
PID 2608 wrote to memory of 2840	2608	svchost.exe	33
PID 2608 wrote to memory of 2840	2608	svchost.exe	33
PID 2608 wrote to memory of 2840	2608	svchost.exe	33
PID 2740 wrote to memory of 3024	2740	explorer.exe	34
PID 2740 wrote to memory of 3024	2740	explorer.exe	34
PID 2740 wrote to memory of 3024	2740	explorer.exe	34
PID 2740 wrote to memory of 3024	2740	explorer.exe	34
PID 2608 wrote to memory of 2076	2608	svchost.exe	35
PID 2608 wrote to memory of 2076	2608	svchost.exe	35
PID 2608 wrote to memory of 2076	2608	svchost.exe	35
PID 2608 wrote to memory of 2076	2608	svchost.exe	35
PID 2608 wrote to memory of 1664	2608	svchost.exe	38
PID 2608 wrote to memory of 1664	2608	svchost.exe	38
PID 2608 wrote to memory of 1664	2608	svchost.exe	38
PID 2608 wrote to memory of 1664	2608	svchost.exe	38

C:\Users\Admin\AppData\Local\Temp\1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.exe
"C:\Users\Admin\AppData\Local\Temp\1d2b005bee67fcd60eff8f8721d941482f36fad64b361557b1f5222031e357b9N.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:2784
- \??\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:2740
- - \??\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:2832
  - - \??\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:2608
    - - \??\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:2840
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 18:10 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2076
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 18:11 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1664
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:3024

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
84069cd7eda890f8f3d67868c0d5f0ed

SHA1
aabeb05a8d17b3f2f79a56b739c0bac1b00684fa

SHA256
0e5aa7f1e5e49bb5d90d852cb9909a9893cba451de89754c4919c0d2057228b6

SHA512
71ec3d8993f901ac557d93f0892191a60229e2b79d4fe4d66849e8cdd77a5ecd5453ee414c7bb5e9022a9451c9452b42e15f5541acb34ade9d6e0b858caac3fe

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

Filesize
135KB

MD5
2ca1f7d17d0bcfbfbb0fae644ed25599

SHA1
0346e1d18ac7f85950a5b16e44b40fc2c8ee8600

SHA256
98c4728ac8405d4deca62d0368ba4e5bbe081d548c9c1c3e32af39afb574212d

SHA512
d80e41563b8cb9049b0c0280a8e899b7a990a359732aa53ee8147f5dfbb358f0fae02969daa8f5c18de945198882173e6cc4b4701a925db2cd2255a0eab31ea0

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
f0f2eeb28123a22318cc7f819357bbef

SHA1
84e873614d58642b9351bbe1ae9ff48c55bcc497

SHA256
69f23f5210b6aac3609b2a8c05910ae93d601d00913e1d0924a6436c5ea769e2

SHA512
8d93d4967113f2d1f3e982b06152bb87814084a9717df8cf7a260234f5be5166df04b979ac7553d4fe8bf743ec9a2ee65ae7884e1db457c4e63e897ff415e3ba

Download Submit
memory/2608-36-0x0000000000270000-0x000000000028F000-memory.dmp

Filesize
124KB

Download
memory/2608-45-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2608-46-0x0000000000270000-0x000000000028F000-memory.dmp

Filesize
124KB

Download
memory/2740-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2784-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2784-8-0x0000000000300000-0x000000000031F000-memory.dmp

Filesize
124KB

Download
memory/2784-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2832-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2840-41-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download