c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3d

Analysis

max time kernel
120s
max time network
17s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03/10/2024, 22:20

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General

Target

c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
Size

206KB
MD5

8f01091bade8cb30e0c70da373094c00
SHA1

eb67bdf66ce5c8858577693a3599ae3a8b3395e9
SHA256

c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3d
SHA512

252317db74c0ab78bfb043426dffa186c0096b9d44709004079bf0af142e32414f3f177fa1e2c6d248ac080bea3b203d60bf053c386f93b50c8b034d894756ac
SSDEEP

1536:GfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbJd3hzzzzzzzzzzzO:GVqoCl/YgjxEufVU0TbTyDDalb3M

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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe

Executes dropped EXE 4 IoCs

pid	Process
2696	explorer.exe
2680	spoolsv.exe
1808	svchost.exe
2668	spoolsv.exe

Loads dropped DLL 8 IoCs

pid	Process
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2696	explorer.exe
2696	explorer.exe
2680	spoolsv.exe
2680	spoolsv.exe
1808	svchost.exe
1808	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	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.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

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
1396	schtasks.exe
2928	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2696	explorer.exe
2696	explorer.exe
2696	explorer.exe
2696	explorer.exe
2696	explorer.exe
2696	explorer.exe
2696	explorer.exe
2696	explorer.exe
2696	explorer.exe
2696	explorer.exe
2696	explorer.exe
2696	explorer.exe
2696	explorer.exe
2696	explorer.exe
2696	explorer.exe
2696	explorer.exe
1808	svchost.exe
1808	svchost.exe
1808	svchost.exe
1808	svchost.exe
1808	svchost.exe
1808	svchost.exe
1808	svchost.exe
1808	svchost.exe
1808	svchost.exe
1808	svchost.exe
1808	svchost.exe
1808	svchost.exe
1808	svchost.exe
1808	svchost.exe
1808	svchost.exe
1808	svchost.exe
2696	explorer.exe
1808	svchost.exe
2696	explorer.exe
1808	svchost.exe
2696	explorer.exe
2696	explorer.exe
1808	svchost.exe
2696	explorer.exe
1808	svchost.exe
2696	explorer.exe
1808	svchost.exe
2696	explorer.exe
1808	svchost.exe
1808	svchost.exe
2696	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2696	explorer.exe
1808	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
2696	explorer.exe
2696	explorer.exe
2680	spoolsv.exe
2680	spoolsv.exe
1808	svchost.exe
1808	svchost.exe
2668	spoolsv.exe
2668	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2648 wrote to memory of 2696	2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe	30
PID 2648 wrote to memory of 2696	2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe	30
PID 2648 wrote to memory of 2696	2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe	30
PID 2648 wrote to memory of 2696	2648	c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe	30
PID 2696 wrote to memory of 2680	2696	explorer.exe	31
PID 2696 wrote to memory of 2680	2696	explorer.exe	31
PID 2696 wrote to memory of 2680	2696	explorer.exe	31
PID 2696 wrote to memory of 2680	2696	explorer.exe	31
PID 2680 wrote to memory of 1808	2680	spoolsv.exe	32
PID 2680 wrote to memory of 1808	2680	spoolsv.exe	32
PID 2680 wrote to memory of 1808	2680	spoolsv.exe	32
PID 2680 wrote to memory of 1808	2680	spoolsv.exe	32
PID 1808 wrote to memory of 2668	1808	svchost.exe	33
PID 1808 wrote to memory of 2668	1808	svchost.exe	33
PID 1808 wrote to memory of 2668	1808	svchost.exe	33
PID 1808 wrote to memory of 2668	1808	svchost.exe	33
PID 2696 wrote to memory of 2624	2696	explorer.exe	34
PID 2696 wrote to memory of 2624	2696	explorer.exe	34
PID 2696 wrote to memory of 2624	2696	explorer.exe	34
PID 2696 wrote to memory of 2624	2696	explorer.exe	34
PID 1808 wrote to memory of 1396	1808	svchost.exe	35
PID 1808 wrote to memory of 1396	1808	svchost.exe	35
PID 1808 wrote to memory of 1396	1808	svchost.exe	35
PID 1808 wrote to memory of 1396	1808	svchost.exe	35
PID 1808 wrote to memory of 2928	1808	svchost.exe	38
PID 1808 wrote to memory of 2928	1808	svchost.exe	38
PID 1808 wrote to memory of 2928	1808	svchost.exe	38
PID 1808 wrote to memory of 2928	1808	svchost.exe	38

C:\Users\Admin\AppData\Local\Temp\c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.exe
"C:\Users\Admin\AppData\Local\Temp\c816a7616c6629fa1b64d18a6252506e64b33e8b935ec84fb24399485a45ad3dN.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:2648
- \??\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:2696
- - \??\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:2680
  - - \??\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:1808
    - - \??\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:2668
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 22:22 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1396
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 22:23 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2928
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2624

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\Themes\explorer.exe

Filesize
206KB

MD5
5b784ea97fdc95b0bc6fccdb70e3d7ae

SHA1
ab587cb0fe179fda2abc8070d9ca7a26f1200006

SHA256
d3ee9d7030f918d18e04dcba5d918bfeed9ee4cdb2938763e681294311ea2aba

SHA512
75cb65570c8238650b8bacf5e9dfe95f4d9a28ba9fc92b167a26c368d2f469cb03aa5024c2a2a70d2066a252f5d90140f0591325c4e9d77165252e4c1d83a920

Download Submit
\Windows\Resources\spoolsv.exe

Filesize
206KB

MD5
738d47e5f60ed0a65181f36a0c82982a

SHA1
e1eb311542916a6bb5e29c476abee5851dc5a003

SHA256
e2d586da14c0fa2bedb1ac83307672c21654194bc9817b6f27cf8e3c8fb68713

SHA512
de54d2c0160200cb807d679db74c6741242aadb53167b59048321d210335d51826d72cd6ddcfec841894fa5811e05f57f337c797a7ac1c96c750eeb331e4b967

Download Submit
\Windows\Resources\svchost.exe

Filesize
206KB

MD5
da6dc17a4656f5d4d6dd6a499369c250

SHA1
55c1f13c6a92fcd3a5a60be0781b5a3943bc71d6

SHA256
b8d230b992f9f01b2c2e4b01a004b2e24def450af9e0a6d1cc86ebaab6b1d2ff

SHA512
e945113001a49c45732c7ae918361631f5f97940035855b8ccc6e3dba6cdab0fe1833a24f53e487466fe5d6219d933bd1c0d062e8735134d4da2f11b17cdd239

Download Submit
memory/1808-60-0x00000000002D0000-0x00000000002FF000-memory.dmp

Filesize
188KB

Download
memory/1808-59-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1808-50-0x00000000002D0000-0x00000000002FF000-memory.dmp

Filesize
188KB

Download
memory/2648-57-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2648-0-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2648-13-0x00000000004F0000-0x000000000051F000-memory.dmp

Filesize
188KB

Download
memory/2648-14-0x00000000004F0000-0x000000000051F000-memory.dmp

Filesize
188KB

Download
memory/2668-55-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2680-43-0x0000000000540000-0x000000000056F000-memory.dmp

Filesize
188KB

Download
memory/2680-42-0x0000000000540000-0x000000000056F000-memory.dmp

Filesize
188KB

Download
memory/2680-56-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2696-28-0x0000000000430000-0x000000000045F000-memory.dmp

Filesize
188KB

Download
memory/2696-58-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download