1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41

Analysis

max time kernel
158s
max time network
135s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/03/2024, 21:04

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
Size

135KB
MD5

aa727e23681f4a6e1126507a33b6ac08
SHA1

c94bdc24a035b7525462af82821d8af716f18414
SHA256

1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41
SHA512

a32861bd780f5bfcf61396e01732cf9ad2f1f585452d3974835f6e112ebd797a04bd7b628c9314e28b2761b10e761c87121c81d5cbd69e07d7b09eab6a954362
SSDEEP

1536:UfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbV69:UVqoCl/YgjxEufVU0TbTyDDals9

Score

10^/10

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-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
2068	explorer.exe
2568	spoolsv.exe
2672	svchost.exe
2440	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2068	explorer.exe
2568	spoolsv.exe
2672	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"	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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.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	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
File opened for modification	\??\c:\windows\resources\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\svchost.exe	spoolsv.exe

Creates scheduled task(s) 1 TTPs 3 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
1312	schtasks.exe
2284	schtasks.exe
2448	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2068	explorer.exe
2068	explorer.exe
2068	explorer.exe
2068	explorer.exe
2068	explorer.exe
2068	explorer.exe
2068	explorer.exe
2068	explorer.exe
2068	explorer.exe
2068	explorer.exe
2068	explorer.exe
2068	explorer.exe
2068	explorer.exe
2068	explorer.exe
2068	explorer.exe
2068	explorer.exe
2672	svchost.exe
2672	svchost.exe
2672	svchost.exe
2672	svchost.exe
2672	svchost.exe
2672	svchost.exe
2672	svchost.exe
2672	svchost.exe
2672	svchost.exe
2672	svchost.exe
2672	svchost.exe
2672	svchost.exe
2672	svchost.exe
2672	svchost.exe
2672	svchost.exe
2672	svchost.exe
2068	explorer.exe
2068	explorer.exe
2068	explorer.exe
2672	svchost.exe
2672	svchost.exe
2068	explorer.exe
2672	svchost.exe
2068	explorer.exe
2672	svchost.exe
2068	explorer.exe
2068	explorer.exe
2672	svchost.exe
2068	explorer.exe
2672	svchost.exe
2068	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2068	explorer.exe
2672	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
2068	explorer.exe
2068	explorer.exe
2568	spoolsv.exe
2568	spoolsv.exe
2672	svchost.exe
2672	svchost.exe
2440	spoolsv.exe
2440	spoolsv.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2768 wrote to memory of 2068	2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe	28
PID 2768 wrote to memory of 2068	2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe	28
PID 2768 wrote to memory of 2068	2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe	28
PID 2768 wrote to memory of 2068	2768	1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe	28
PID 2068 wrote to memory of 2568	2068	explorer.exe	29
PID 2068 wrote to memory of 2568	2068	explorer.exe	29
PID 2068 wrote to memory of 2568	2068	explorer.exe	29
PID 2068 wrote to memory of 2568	2068	explorer.exe	29
PID 2568 wrote to memory of 2672	2568	spoolsv.exe	30
PID 2568 wrote to memory of 2672	2568	spoolsv.exe	30
PID 2568 wrote to memory of 2672	2568	spoolsv.exe	30
PID 2568 wrote to memory of 2672	2568	spoolsv.exe	30
PID 2672 wrote to memory of 2440	2672	svchost.exe	31
PID 2672 wrote to memory of 2440	2672	svchost.exe	31
PID 2672 wrote to memory of 2440	2672	svchost.exe	31
PID 2672 wrote to memory of 2440	2672	svchost.exe	31
PID 2068 wrote to memory of 2708	2068	explorer.exe	32
PID 2068 wrote to memory of 2708	2068	explorer.exe	32
PID 2068 wrote to memory of 2708	2068	explorer.exe	32
PID 2068 wrote to memory of 2708	2068	explorer.exe	32
PID 2672 wrote to memory of 2448	2672	svchost.exe	33
PID 2672 wrote to memory of 2448	2672	svchost.exe	33
PID 2672 wrote to memory of 2448	2672	svchost.exe	33
PID 2672 wrote to memory of 2448	2672	svchost.exe	33
PID 2672 wrote to memory of 1312	2672	svchost.exe	38
PID 2672 wrote to memory of 1312	2672	svchost.exe	38
PID 2672 wrote to memory of 1312	2672	svchost.exe	38
PID 2672 wrote to memory of 1312	2672	svchost.exe	38
PID 2672 wrote to memory of 2284	2672	svchost.exe	40
PID 2672 wrote to memory of 2284	2672	svchost.exe	40
PID 2672 wrote to memory of 2284	2672	svchost.exe	40
PID 2672 wrote to memory of 2284	2672	svchost.exe	40

C:\Users\Admin\AppData\Local\Temp\1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe
"C:\Users\Admin\AppData\Local\Temp\1828cf00ac9d39a664c31f850db6dba62e18beae146bdef9152d83fb67767c41.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2768
- \??\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
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2068
- - \??\c:\windows\resources\spoolsv.exe
    c:\windows\resources\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Windows directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2568
  - - \??\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
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2672
    - - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:2440
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 21:06 /f
        5⤵
        Creates scheduled task(s)
        
        PID:2448
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 21:07 /f
        5⤵
        Creates scheduled task(s)
        
        PID:1312
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 21:08 /f
        5⤵
        Creates scheduled task(s)
        
        PID:2284
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2708

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\Resources\spoolsv.exe

Filesize
135KB

MD5
dc2e7b72145134d20706a5515373c9a0

SHA1
10d01e9aab79ef5b5a2c4c24016e81fd44a83666

SHA256
669724298b142a2a7482f7a5539d21a5dfc3264514393bef7c130b3c2ce20d0f

SHA512
1895da451eb4ebf7e52ef493b1d7d7698a4268d7ffbfd43f2e1f027849c8916da37e641b42373ce2c50a3d68558f6d29de37d1b84f34492598212eab60616301

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

Filesize
135KB

MD5
de65757810d0bcd424d11dcf33e1a227

SHA1
83521ec575be8d91a1a2160cc8af5f5976794ee7

SHA256
8dba97098872abbadf00322a594a4611d61bd1b919ac89758bc4e2e44f10d380

SHA512
65ca8d0dc14c2b98d59368995f0e43335ed05c291b9081026182333071a1ad64e3ad66719c2ba43cdac3f5258cd43890019eb79829c10a4f57db497324686e64

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
63a3526e96cb8ef0121c662590c76bed

SHA1
c5439283f808929d370d5314918c2aa60e187721

SHA256
1dc007f252bdd616a7edca59bf32fa093c74f82fdb87ccd330752ec85c9499c8

SHA512
46fdbd05b4333568001974e4828f83295a6cd97d1ebc55aa133267140070f34e4922794c2169e43ef36abe97f942e556fbe16461f252dfec6d343de4dd790235

Download Submit
memory/2440-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2568-23-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2568-31-0x0000000000370000-0x000000000038F000-memory.dmp

Filesize
124KB

Download
memory/2568-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2768-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2768-9-0x0000000000300000-0x000000000031F000-memory.dmp

Filesize
124KB

Download
memory/2768-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download