6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac

Analysis

max time kernel
150s
max time network
113s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
23-08-2024 21:35

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General

Target

6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
Size

135KB
MD5

33b4368c4c760e6d19d9beb40cc6fb23
SHA1

1c4b48a85360d7743f201fddbc51a28cb8b9aee7
SHA256

6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac
SHA512

d9fc683ebd4f363f6747aba5035352edab54bedca89490a206ba9f93fb63bd4659b320312bd86bd8956a0e97db2faf990e4098e44094e1bab504dbeb36ff6ae4
SSDEEP

1536:XfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbgGb:XVqoCl/YgjxEufVU0TbTyDDal5b

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-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
3328	explorer.exe
4884	spoolsv.exe
3264	svchost.exe
1844	spoolsv.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\themes\explorer.exe	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.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 5 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	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.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

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe
3328	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
3328	explorer.exe
3264	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
3328	explorer.exe
3328	explorer.exe
4884	spoolsv.exe
4884	spoolsv.exe
3264	svchost.exe
3264	svchost.exe
1844	spoolsv.exe
1844	spoolsv.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2956 wrote to memory of 3328	2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe	84
PID 2956 wrote to memory of 3328	2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe	84
PID 2956 wrote to memory of 3328	2956	6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe	84
PID 3328 wrote to memory of 4884	3328	explorer.exe	85
PID 3328 wrote to memory of 4884	3328	explorer.exe	85
PID 3328 wrote to memory of 4884	3328	explorer.exe	85
PID 4884 wrote to memory of 3264	4884	spoolsv.exe	87
PID 4884 wrote to memory of 3264	4884	spoolsv.exe	87
PID 4884 wrote to memory of 3264	4884	spoolsv.exe	87
PID 3264 wrote to memory of 1844	3264	svchost.exe	88
PID 3264 wrote to memory of 1844	3264	svchost.exe	88
PID 3264 wrote to memory of 1844	3264	svchost.exe	88

C:\Users\Admin\AppData\Local\Temp\6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe
"C:\Users\Admin\AppData\Local\Temp\6766f16a055a3312623083583c7afa08d0d861bd030ad85b3e22f50e188882ac.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2956
- \??\c:\windows\resources\themes\explorer.exe
  c:\windows\resources\themes\explorer.exe
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - 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:3328
- - \??\c:\windows\resources\spoolsv.exe
    c:\windows\resources\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4884
  - - \??\c:\windows\resources\svchost.exe
      c:\windows\resources\svchost.exe
      4⤵
      Modifies visiblity of hidden/system files in Explorer
      Executes dropped EXE
      Adds Run key to start application
      Drops file in System32 directory
      System Location Discovery: System Language Discovery
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:3264
    - - \??\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:1844

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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
cc09eed5de3038220c44df940bfddf2b

SHA1
9a6820074ce30d15e4b4a8f05f45193441b279a3

SHA256
26299700d84be5780e43be4fadc99cacdcb6b127bc792105b39b7d5a022285c1

SHA512
9dbba231622855a311485e0a93ce19d3120b281dd692c5333c269565c134fe2c32aa5c43d8532d95b5b5b4c939a5f718ac34c90360fb1280ccf872dc94cfb6e7

Download Submit
C:\Windows\Resources\svchost.exe

Filesize
135KB

MD5
fd790f53eabd205f3efd31e16ccbafa0

SHA1
214f3e81aa9234669a4421b561d300001f891c63

SHA256
ba32224678216167a2daeb8d593d92712ec7685dbfe659a58a8dfdacdac5e7c9

SHA512
65244bdd7c86afc9dbd8e392fab4aa7d8bd59f624f36a1e1cee6b07c03908a160640a55f53b036325e5a571e3b37e45a189c4d48fedebed37b271610d5e9fb82

Download Submit
\??\c:\windows\resources\themes\explorer.exe

Filesize
135KB

MD5
1719a02a2f5b2c8c0b85ab2d9f3c7477

SHA1
b40bf0f8379d9fdc9f79f8ded9937b1f0ecb6e91

SHA256
6367af9a069ebe7e3630512259c70ff636d0569f290d2cf2d1ceff3ee761743a

SHA512
648719807700995b51d74a3510dcd292caf17bf14e721ccc83f338e6ecae078d3ade80dec2e41f9a1c5abc7f4b4fc34e6975a973475efac4068cd26495f90a24

Download Submit
memory/1844-32-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2956-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2956-34-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3264-36-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3328-35-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4884-33-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download