33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8a

Analysis

max time kernel
150s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21/09/2024, 00:02

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General

Target

33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
Size

206KB
MD5

caa5d030fce8e086b1f92ad8f2081d40
SHA1

b77999baa2f166c1f07894fdc1fc8a96d3c4ef81
SHA256

33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8a
SHA512

f824f6f1ee86943b8e0c9c170146410626d1b0eb071b682fe92bbbd07b05abad668238354b0fac33cb19ffc078921ff0abe0824b267d1b443a870961829c5d07
SSDEEP

1536:/fsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbJd2:/VqoCl/YgjxEufVU0TbTyDDalb2

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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
3040	explorer.exe
2368	spoolsv.exe
2964	svchost.exe
2820	spoolsv.exe

Loads dropped DLL 8 IoCs

pid	Process
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
3040	explorer.exe
3040	explorer.exe
2368	spoolsv.exe
2368	spoolsv.exe
2964	svchost.exe
2964	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\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
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.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	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	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.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

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
2996	schtasks.exe
2660	schtasks.exe
2700	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
3040	explorer.exe
3040	explorer.exe
3040	explorer.exe
3040	explorer.exe
3040	explorer.exe
3040	explorer.exe
3040	explorer.exe
3040	explorer.exe
3040	explorer.exe
3040	explorer.exe
3040	explorer.exe
3040	explorer.exe
3040	explorer.exe
3040	explorer.exe
3040	explorer.exe
3040	explorer.exe
2964	svchost.exe
2964	svchost.exe
2964	svchost.exe
2964	svchost.exe
2964	svchost.exe
2964	svchost.exe
2964	svchost.exe
2964	svchost.exe
2964	svchost.exe
2964	svchost.exe
2964	svchost.exe
2964	svchost.exe
2964	svchost.exe
2964	svchost.exe
2964	svchost.exe
2964	svchost.exe
3040	explorer.exe
3040	explorer.exe
3040	explorer.exe
3040	explorer.exe
2964	svchost.exe
2964	svchost.exe
3040	explorer.exe
2964	svchost.exe
3040	explorer.exe
2964	svchost.exe
3040	explorer.exe
2964	svchost.exe
3040	explorer.exe
2964	svchost.exe
3040	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
3040	explorer.exe
2964	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
3040	explorer.exe
3040	explorer.exe
2368	spoolsv.exe
2368	spoolsv.exe
2964	svchost.exe
2964	svchost.exe
2820	spoolsv.exe
2820	spoolsv.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2424 wrote to memory of 3040	2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe	30
PID 2424 wrote to memory of 3040	2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe	30
PID 2424 wrote to memory of 3040	2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe	30
PID 2424 wrote to memory of 3040	2424	33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe	30
PID 3040 wrote to memory of 2368	3040	explorer.exe	31
PID 3040 wrote to memory of 2368	3040	explorer.exe	31
PID 3040 wrote to memory of 2368	3040	explorer.exe	31
PID 3040 wrote to memory of 2368	3040	explorer.exe	31
PID 2368 wrote to memory of 2964	2368	spoolsv.exe	32
PID 2368 wrote to memory of 2964	2368	spoolsv.exe	32
PID 2368 wrote to memory of 2964	2368	spoolsv.exe	32
PID 2368 wrote to memory of 2964	2368	spoolsv.exe	32
PID 2964 wrote to memory of 2820	2964	svchost.exe	33
PID 2964 wrote to memory of 2820	2964	svchost.exe	33
PID 2964 wrote to memory of 2820	2964	svchost.exe	33
PID 2964 wrote to memory of 2820	2964	svchost.exe	33
PID 3040 wrote to memory of 2448	3040	explorer.exe	34
PID 3040 wrote to memory of 2448	3040	explorer.exe	34
PID 3040 wrote to memory of 2448	3040	explorer.exe	34
PID 3040 wrote to memory of 2448	3040	explorer.exe	34
PID 2964 wrote to memory of 2996	2964	svchost.exe	35
PID 2964 wrote to memory of 2996	2964	svchost.exe	35
PID 2964 wrote to memory of 2996	2964	svchost.exe	35
PID 2964 wrote to memory of 2996	2964	svchost.exe	35
PID 2964 wrote to memory of 2660	2964	svchost.exe	39
PID 2964 wrote to memory of 2660	2964	svchost.exe	39
PID 2964 wrote to memory of 2660	2964	svchost.exe	39
PID 2964 wrote to memory of 2660	2964	svchost.exe	39
PID 2964 wrote to memory of 2700	2964	svchost.exe	41
PID 2964 wrote to memory of 2700	2964	svchost.exe	41
PID 2964 wrote to memory of 2700	2964	svchost.exe	41
PID 2964 wrote to memory of 2700	2964	svchost.exe	41

C:\Users\Admin\AppData\Local\Temp\33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.exe
"C:\Users\Admin\AppData\Local\Temp\33ccd86213fe370b911cb18788858ccf4652316ded94699b41a8a3059196ff8aN.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:2424
- \??\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:3040
- - \??\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:2368
  - - \??\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:2964
    - - \??\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:2820
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 00:04 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2996
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 00:05 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2660
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 00:06 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2700
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2448

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
206KB

MD5
ac90bc727dceaf8141edeb67f9b27ba6

SHA1
d2922a8ee073871f6af209a0dea7ff05cec28ac0

SHA256
c2afe0e70dc4b33eda0c74a27918cea3e662d044a3193001436d9a86281b344f

SHA512
ddc20ef0b2de65fc705de1b2d3588cb248ed5b47641f8cd4d59cf7b8afd476c1879715eec1e8965642ee8e10b8b166c87ce49ee03d22567a710450e2edac60f1

Download Submit
\Windows\Resources\spoolsv.exe

Filesize
206KB

MD5
6ec4ba73cf2b8893417183a2b88f1d97

SHA1
4a2b7e5c327741c195b187561b92bdf9bb2e67e4

SHA256
b96de1b3996f1466c8f9cb59243efd213197f41bcb09a338f543b0479bd03f28

SHA512
95085a6a192ff2f713c48e68e2ac07347823d9373815d18fba1a44c9bf1cf7d3b3ef9f19df5b3656c0fda743fe628fdbf916edca1318983d365e58258a3e7eb9

Download Submit
\Windows\Resources\svchost.exe

Filesize
206KB

MD5
6f9f48c43f9cf26d1cdbb05a9e405cf9

SHA1
d784c98f82529b0365c720318d65ea7f17176a2a

SHA256
45118e3ba2ebf91f6fba69238fb58ddbf2f24a818bbe1ff42f48710444df1e83

SHA512
1bfcda66b0c421f4a31146e93ec0dd6fe24d32b0dc469b0d10ee805e6a932dd719e9a27137d18e0bd2806c3660eb10d9bdeb1545e0d4c6482f554d71a998ae64

Download Submit
memory/2368-54-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2368-37-0x0000000000280000-0x00000000002AF000-memory.dmp

Filesize
188KB

Download
memory/2424-13-0x0000000000280000-0x00000000002AF000-memory.dmp

Filesize
188KB

Download
memory/2424-14-0x0000000000280000-0x00000000002AF000-memory.dmp

Filesize
188KB

Download
memory/2424-0-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2424-55-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2820-53-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2964-58-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3040-28-0x00000000002F0000-0x000000000031F000-memory.dmp

Filesize
188KB

Download
memory/3040-56-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3040-57-0x00000000002F0000-0x000000000031F000-memory.dmp

Filesize
188KB

Download