41474856991d239067ede8e26eaf36e60196a3ebe891aea1166aeeb36610e136

Analysis

max time kernel
120s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
20/08/2024, 12:54

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General

Target

f126c86b845490ab731aa3d721795330N.exe
Size

135KB
MD5

f126c86b845490ab731aa3d721795330
SHA1

40c154bca40f91d537668ac1c8355cea95789fb2
SHA256

41474856991d239067ede8e26eaf36e60196a3ebe891aea1166aeeb36610e136
SHA512

8bd0505f4020b216a556ed593193ab555ed4ec001b20c38784bae7623eaf3930869e74f44966f0704ce127faa30ae2dc33497898d30a5373677b200c8fe6a0b9
SSDEEP

1536:UfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbVvUH:UVqoCl/YgjxEufVU0TbTyDDal1UH

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-1-5-21-2257386474-3982792636-3902186748-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2257386474-3982792636-3902186748-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
2168	explorer.exe
2840	spoolsv.exe
2656	svchost.exe
2348	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
3016	f126c86b845490ab731aa3d721795330N.exe
2168	explorer.exe
2840	spoolsv.exe
2656	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	f126c86b845490ab731aa3d721795330N.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	f126c86b845490ab731aa3d721795330N.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
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
2192	schtasks.exe
2592	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2656	svchost.exe
2656	svchost.exe
2656	svchost.exe
2656	svchost.exe
2656	svchost.exe
2656	svchost.exe
2656	svchost.exe
2656	svchost.exe
2656	svchost.exe
2656	svchost.exe
2656	svchost.exe
2656	svchost.exe
2656	svchost.exe
2656	svchost.exe
2656	svchost.exe
2656	svchost.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2656	svchost.exe
2656	svchost.exe
2168	explorer.exe
2168	explorer.exe
2656	svchost.exe
2168	explorer.exe
2656	svchost.exe
2168	explorer.exe
2656	svchost.exe
2168	explorer.exe
2656	svchost.exe
2168	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2168	explorer.exe
2656	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
3016	f126c86b845490ab731aa3d721795330N.exe
3016	f126c86b845490ab731aa3d721795330N.exe
2168	explorer.exe
2168	explorer.exe
2840	spoolsv.exe
2840	spoolsv.exe
2656	svchost.exe
2656	svchost.exe
2348	spoolsv.exe
2348	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 3016 wrote to memory of 2168	3016	f126c86b845490ab731aa3d721795330N.exe	30
PID 3016 wrote to memory of 2168	3016	f126c86b845490ab731aa3d721795330N.exe	30
PID 3016 wrote to memory of 2168	3016	f126c86b845490ab731aa3d721795330N.exe	30
PID 3016 wrote to memory of 2168	3016	f126c86b845490ab731aa3d721795330N.exe	30
PID 2168 wrote to memory of 2840	2168	explorer.exe	31
PID 2168 wrote to memory of 2840	2168	explorer.exe	31
PID 2168 wrote to memory of 2840	2168	explorer.exe	31
PID 2168 wrote to memory of 2840	2168	explorer.exe	31
PID 2840 wrote to memory of 2656	2840	spoolsv.exe	32
PID 2840 wrote to memory of 2656	2840	spoolsv.exe	32
PID 2840 wrote to memory of 2656	2840	spoolsv.exe	32
PID 2840 wrote to memory of 2656	2840	spoolsv.exe	32
PID 2656 wrote to memory of 2348	2656	svchost.exe	33
PID 2656 wrote to memory of 2348	2656	svchost.exe	33
PID 2656 wrote to memory of 2348	2656	svchost.exe	33
PID 2656 wrote to memory of 2348	2656	svchost.exe	33
PID 2168 wrote to memory of 1904	2168	explorer.exe	34
PID 2168 wrote to memory of 1904	2168	explorer.exe	34
PID 2168 wrote to memory of 1904	2168	explorer.exe	34
PID 2168 wrote to memory of 1904	2168	explorer.exe	34
PID 2656 wrote to memory of 2192	2656	svchost.exe	35
PID 2656 wrote to memory of 2192	2656	svchost.exe	35
PID 2656 wrote to memory of 2192	2656	svchost.exe	35
PID 2656 wrote to memory of 2192	2656	svchost.exe	35
PID 2656 wrote to memory of 2592	2656	svchost.exe	38
PID 2656 wrote to memory of 2592	2656	svchost.exe	38
PID 2656 wrote to memory of 2592	2656	svchost.exe	38
PID 2656 wrote to memory of 2592	2656	svchost.exe	38

C:\Users\Admin\AppData\Local\Temp\f126c86b845490ab731aa3d721795330N.exe
"C:\Users\Admin\AppData\Local\Temp\f126c86b845490ab731aa3d721795330N.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:3016
- \??\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:2168
- - \??\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:2840
  - - \??\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:2656
    - - \??\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:2348
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 12:56 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2192
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 12:57 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2592
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:1904

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
3b159e2fc77e9fcb0632b4b5f128b4ee

SHA1
639654c56a9a9c3b53c87a13eea726a41fd93919

SHA256
90c95bb11e3d08fab368bb23261171ba50e47334484813109682255454b8bd4f

SHA512
47bce0fddda5a84da93d24e0e9e2891ce8d350a15ef529db4c1953713226502b3e9bf44b2cd584e8cf0741c380c93fd7adcabaee93d302bc022837d0109789c9

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

Filesize
135KB

MD5
73677da6917117e7d351f5e716f196df

SHA1
81138f087c9d6e4bed7a7082c373e1ee3e6ec22a

SHA256
bf8407dc4cc49d31129ea86b84e9f1f2b0d688c6ba4054b8e82ecb5e7094f7a8

SHA512
266e37e3f045a66db30fe1bcaa768b8e99e2fb1ff01cc1c0e17c9d84738727ad3c4b7ec387e94d95f2155b060ebb69cfd75f2e3e7c82071bce60ab72195b7d94

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
ba266ef88ca5d9e78f6c7f45ac872e51

SHA1
ccb635d5b5a9ecb6eba2097763d5c1a3f6c9e6a8

SHA256
af77171c0c0167401bb1f2602fc78ffdb40cddf717e9fde253b3b818a6a03d75

SHA512
4b5337127c9d02e1b04977067055973e5efcf4fb3600256b2cc8a7cfe52408fad6436d41aa4d0cc24c6ab0c3ac125e0d6a642c933c4bc82bac1487df56c493e0

Download Submit
memory/2168-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2348-40-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2656-35-0x0000000000340000-0x000000000035F000-memory.dmp

Filesize
124KB

Download
memory/2656-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2656-45-0x0000000000340000-0x000000000035F000-memory.dmp

Filesize
124KB

Download
memory/2840-41-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3016-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3016-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download