7c55a9781ca910cd8df430ad4470636059b1bd77314370d0c710ad7904fe2a90

Analysis

max time kernel
120s
max time network
16s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
25/08/2024, 18:06

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General

Target

b275510857a066767ca6c18dbc0593e0N.exe
Size

135KB
MD5

b275510857a066767ca6c18dbc0593e0
SHA1

314dc8db43aa727339749ce1a13d7a919561f0a9
SHA256

7c55a9781ca910cd8df430ad4470636059b1bd77314370d0c710ad7904fe2a90
SHA512

fa7dd8d26705471888ef71d8312bd2cff46e511d4e3bc0c59ca5c40e05faef5419d1f4e33ace2536945133c1d2a9b232376d6229a90583498ea22adcdf34824b
SSDEEP

1536:UfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbVT+0ts:UVqoCl/YgjxEufVU0TbTyDDal0Ss

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
2408	explorer.exe
1804	spoolsv.exe
1812	svchost.exe
2328	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
2104	b275510857a066767ca6c18dbc0593e0N.exe
2408	explorer.exe
1804	spoolsv.exe
1812	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	b275510857a066767ca6c18dbc0593e0N.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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b275510857a066767ca6c18dbc0593e0N.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
2720	schtasks.exe
1096	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2408	explorer.exe
2408	explorer.exe
2408	explorer.exe
2408	explorer.exe
2408	explorer.exe
2408	explorer.exe
2408	explorer.exe
2408	explorer.exe
2408	explorer.exe
2408	explorer.exe
2408	explorer.exe
2408	explorer.exe
2408	explorer.exe
2408	explorer.exe
2408	explorer.exe
2408	explorer.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
1812	svchost.exe
2408	explorer.exe
2408	explorer.exe
2408	explorer.exe
1812	svchost.exe
1812	svchost.exe
2408	explorer.exe
2408	explorer.exe
1812	svchost.exe
1812	svchost.exe
2408	explorer.exe
2408	explorer.exe
1812	svchost.exe
1812	svchost.exe
2408	explorer.exe
2408	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2408	explorer.exe
1812	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2104	b275510857a066767ca6c18dbc0593e0N.exe
2104	b275510857a066767ca6c18dbc0593e0N.exe
2408	explorer.exe
2408	explorer.exe
1804	spoolsv.exe
1804	spoolsv.exe
1812	svchost.exe
1812	svchost.exe
2328	spoolsv.exe
2328	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2104 wrote to memory of 2408	2104	b275510857a066767ca6c18dbc0593e0N.exe	30
PID 2104 wrote to memory of 2408	2104	b275510857a066767ca6c18dbc0593e0N.exe	30
PID 2104 wrote to memory of 2408	2104	b275510857a066767ca6c18dbc0593e0N.exe	30
PID 2104 wrote to memory of 2408	2104	b275510857a066767ca6c18dbc0593e0N.exe	30
PID 2408 wrote to memory of 1804	2408	explorer.exe	31
PID 2408 wrote to memory of 1804	2408	explorer.exe	31
PID 2408 wrote to memory of 1804	2408	explorer.exe	31
PID 2408 wrote to memory of 1804	2408	explorer.exe	31
PID 1804 wrote to memory of 1812	1804	spoolsv.exe	32
PID 1804 wrote to memory of 1812	1804	spoolsv.exe	32
PID 1804 wrote to memory of 1812	1804	spoolsv.exe	32
PID 1804 wrote to memory of 1812	1804	spoolsv.exe	32
PID 1812 wrote to memory of 2328	1812	svchost.exe	33
PID 1812 wrote to memory of 2328	1812	svchost.exe	33
PID 1812 wrote to memory of 2328	1812	svchost.exe	33
PID 1812 wrote to memory of 2328	1812	svchost.exe	33
PID 2408 wrote to memory of 2868	2408	explorer.exe	34
PID 2408 wrote to memory of 2868	2408	explorer.exe	34
PID 2408 wrote to memory of 2868	2408	explorer.exe	34
PID 2408 wrote to memory of 2868	2408	explorer.exe	34
PID 1812 wrote to memory of 2720	1812	svchost.exe	35
PID 1812 wrote to memory of 2720	1812	svchost.exe	35
PID 1812 wrote to memory of 2720	1812	svchost.exe	35
PID 1812 wrote to memory of 2720	1812	svchost.exe	35
PID 1812 wrote to memory of 1096	1812	svchost.exe	39
PID 1812 wrote to memory of 1096	1812	svchost.exe	39
PID 1812 wrote to memory of 1096	1812	svchost.exe	39
PID 1812 wrote to memory of 1096	1812	svchost.exe	39

C:\Users\Admin\AppData\Local\Temp\b275510857a066767ca6c18dbc0593e0N.exe
"C:\Users\Admin\AppData\Local\Temp\b275510857a066767ca6c18dbc0593e0N.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:2104
- \??\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:2408
- - \??\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:1804
  - - \??\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:1812
    - - \??\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:2328
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 18:08 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2720
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 18:09 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1096
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2868

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
e7adba24126b7facbf00f4a47a232f0c

SHA1
330eff65d59148bb1d3838c24724bac7f4aa5d83

SHA256
5e6ef22fbd01c72a426da419c7c4380b7b22586d87b09538a4cbf8fdca52cedc

SHA512
7023364600edf1c9f1a5ead3e6006026430f10202ac26c4b8a2af6076d9f97ce2dcceca3632a3662a2b27db993b79fba519affe11eb199fa9d60e8251e433769

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

Filesize
135KB

MD5
73ed00460baa0885a37741f118fceb5e

SHA1
3faebca47d6e83c51b04fdf17b1eb6b398401573

SHA256
22f35e4ee532ccc224d814f7528b2bac99e05d0dce7dfc36089225133e21f6c8

SHA512
46bbb08d81153a51af794aeb073ecffeeb29382b32448c1a7bec86d8bdfd4c041cb420a5fe625057de3a328bff098ed5bba861b1225a72d99f8a98fa1063eaf2

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
76bdcb175cd66c50da3e130ddfd2b5f3

SHA1
3475078037463a3acd13c74071abcee060e7cdcb

SHA256
e24dc3ad013db22701e494b7bfbf1dee61db7a1b12517f32ff2638903a529643

SHA512
1ac36670f0c560422d2040680e2f4ed3fc3cf20eeba63de960441e253e8c6b7d83f4dbc8b689b1a6190fd22b4bff42601e7ba44940064798903cc6458d11ef6e

Download Submit
memory/1804-30-0x0000000000350000-0x000000000036F000-memory.dmp

Filesize
124KB

Download
memory/1804-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1812-45-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1812-46-0x00000000002C0000-0x00000000002DF000-memory.dmp

Filesize
124KB

Download
memory/2104-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2104-9-0x00000000003B0000-0x00000000003CF000-memory.dmp

Filesize
124KB

Download
memory/2104-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2328-41-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2408-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download