3157844376f1f67efa460820531e495d78f3371d7b10bbd666c6c84909ffc1cb

Analysis

max time kernel
120s
max time network
118s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
25/08/2024, 19:30

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General

Target

6e12b57fa31dde6e68c697b13e3f2c20N.exe
Size

135KB
MD5

6e12b57fa31dde6e68c697b13e3f2c20
SHA1

42b6652a12afb53cd8357b03e1573b933acd8e15
SHA256

3157844376f1f67efa460820531e495d78f3371d7b10bbd666c6c84909ffc1cb
SHA512

0ef1278c3ead46a832978af8aefdc85bc77b3073dca2ff84be703cd5fd6a45acf1a7d3b656d100308062fc01692073363daa9f6fc86bb202cfcbcf6a0f5d3389
SSDEEP

1536:UfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbV8cybW:UVqoCl/YgjxEufVU0TbTyDDalicybW

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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
2756	explorer.exe
2676	spoolsv.exe
2668	svchost.exe
2576	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
2756	explorer.exe
2676	spoolsv.exe
2668	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\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	6e12b57fa31dde6e68c697b13e3f2c20N.exe
File opened for modification	\??\c:\windows\resources\spoolsv.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	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	6e12b57fa31dde6e68c697b13e3f2c20N.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 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2672	schtasks.exe
2840	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
2756	explorer.exe
2756	explorer.exe
2756	explorer.exe
2756	explorer.exe
2756	explorer.exe
2756	explorer.exe
2756	explorer.exe
2756	explorer.exe
2756	explorer.exe
2756	explorer.exe
2756	explorer.exe
2756	explorer.exe
2756	explorer.exe
2756	explorer.exe
2756	explorer.exe
2756	explorer.exe
2668	svchost.exe
2668	svchost.exe
2668	svchost.exe
2668	svchost.exe
2668	svchost.exe
2668	svchost.exe
2668	svchost.exe
2668	svchost.exe
2668	svchost.exe
2668	svchost.exe
2668	svchost.exe
2668	svchost.exe
2668	svchost.exe
2668	svchost.exe
2668	svchost.exe
2668	svchost.exe
2756	explorer.exe
2756	explorer.exe
2756	explorer.exe
2668	svchost.exe
2668	svchost.exe
2756	explorer.exe
2756	explorer.exe
2668	svchost.exe
2756	explorer.exe
2668	svchost.exe
2756	explorer.exe
2668	svchost.exe
2756	explorer.exe
2668	svchost.exe
2756	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2756	explorer.exe
2668	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe
2756	explorer.exe
2756	explorer.exe
2676	spoolsv.exe
2676	spoolsv.exe
2668	svchost.exe
2668	svchost.exe
2576	spoolsv.exe
2576	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1884 wrote to memory of 2756	1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe	30
PID 1884 wrote to memory of 2756	1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe	30
PID 1884 wrote to memory of 2756	1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe	30
PID 1884 wrote to memory of 2756	1884	6e12b57fa31dde6e68c697b13e3f2c20N.exe	30
PID 2756 wrote to memory of 2676	2756	explorer.exe	31
PID 2756 wrote to memory of 2676	2756	explorer.exe	31
PID 2756 wrote to memory of 2676	2756	explorer.exe	31
PID 2756 wrote to memory of 2676	2756	explorer.exe	31
PID 2676 wrote to memory of 2668	2676	spoolsv.exe	32
PID 2676 wrote to memory of 2668	2676	spoolsv.exe	32
PID 2676 wrote to memory of 2668	2676	spoolsv.exe	32
PID 2676 wrote to memory of 2668	2676	spoolsv.exe	32
PID 2668 wrote to memory of 2576	2668	svchost.exe	33
PID 2668 wrote to memory of 2576	2668	svchost.exe	33
PID 2668 wrote to memory of 2576	2668	svchost.exe	33
PID 2668 wrote to memory of 2576	2668	svchost.exe	33
PID 2756 wrote to memory of 2552	2756	explorer.exe	34
PID 2756 wrote to memory of 2552	2756	explorer.exe	34
PID 2756 wrote to memory of 2552	2756	explorer.exe	34
PID 2756 wrote to memory of 2552	2756	explorer.exe	34
PID 2668 wrote to memory of 2672	2668	svchost.exe	35
PID 2668 wrote to memory of 2672	2668	svchost.exe	35
PID 2668 wrote to memory of 2672	2668	svchost.exe	35
PID 2668 wrote to memory of 2672	2668	svchost.exe	35
PID 2668 wrote to memory of 2840	2668	svchost.exe	38
PID 2668 wrote to memory of 2840	2668	svchost.exe	38
PID 2668 wrote to memory of 2840	2668	svchost.exe	38
PID 2668 wrote to memory of 2840	2668	svchost.exe	38

C:\Users\Admin\AppData\Local\Temp\6e12b57fa31dde6e68c697b13e3f2c20N.exe
"C:\Users\Admin\AppData\Local\Temp\6e12b57fa31dde6e68c697b13e3f2c20N.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:1884
- \??\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:2756
- - \??\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:2676
  - - \??\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:2668
    - - \??\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:2576
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 19:33 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2672
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 19:34 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2840
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2552

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
fe1b9b03c2741a5e8f7a24147b35dd56

SHA1
0f76f060ba3eeded381f1e535161e03840f1b75b

SHA256
99019acd74165d61fe5bac92e5ae399000c768fbe2af98e50b2ece2233d59530

SHA512
1892985dd11b11e2ef0629c0f4a8843ca119fe5a6158476dec3e414628dacc381beec9ad444c6939f0ab094bda8e3189cab8fc70f7069b435b52ef4a9bdc85e4

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

Filesize
135KB

MD5
1b673fac8cdd2c4ad9f7297c3d792abe

SHA1
d93b9e94869f4f787a83f01c8573cd26a4d71298

SHA256
dfc5458d4e1eb9bb8ab5d339887b22cb0011e0accc1282661ab12c9c24752f1e

SHA512
988290e011b54f1bad671ae728e8dba414dde00c786e94154b065f458b82d1d4e54bc5617ad41ad7a6dcb5972aec400c31bd0a58a262ef36a2a184df0d6523c0

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
59e383583de63b012e92fc8d7232f512

SHA1
85bd5da01521fdbe5cfdc32cc343a75242e31004

SHA256
b294dfdf23b0bf2d1dc6d799a4ae22080e2c01b9592c49e6417c65b4452658eb

SHA512
86bca213f22cc1174f17f3a73fdaac77c6b51738e683222fd33b312cd92fe595bafc293cff067c1cb8a54347ba3595335bda01c202a8eafcf19222811627c28b

Download Submit
memory/1884-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1884-10-0x00000000002A0000-0x00000000002BF000-memory.dmp

Filesize
124KB

Download
memory/1884-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2576-41-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2668-45-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2668-46-0x0000000000280000-0x000000000029F000-memory.dmp

Filesize
124KB

Download
memory/2676-31-0x00000000003B0000-0x00000000003CF000-memory.dmp

Filesize
124KB

Download
memory/2676-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2756-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download