4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870

Analysis

max time kernel
150s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12/10/2024, 21:19

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General

Target

4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
Size

135KB
MD5

5b1d03fe0e6202f8fbf18e6a7457d4ae
SHA1

d71b35f854f5b3dffaa87a97caf5f9fd9c28be25
SHA256

4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870
SHA512

7cdddb4a6d326d0d5bfcf3d014bf5d367be6208065f951e8e37e4392e41ce13d09f069e32b24caa9e9684f3f0d4d54c5d9cee5b585c77e919a0a7b54be809582
SSDEEP

1536:UfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbVLXH/:UVqoCl/YgjxEufVU0TbTyDDal9XH/

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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe

Executes dropped EXE 4 IoCs

pid	Process
3060	explorer.exe
2500	spoolsv.exe
2456	svchost.exe
2860	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
3060	explorer.exe
2500	spoolsv.exe
2456	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	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.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 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	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.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
2824	schtasks.exe
2968	schtasks.exe
1312	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
3060	explorer.exe
3060	explorer.exe
3060	explorer.exe
3060	explorer.exe
3060	explorer.exe
3060	explorer.exe
3060	explorer.exe
3060	explorer.exe
3060	explorer.exe
3060	explorer.exe
3060	explorer.exe
3060	explorer.exe
3060	explorer.exe
3060	explorer.exe
3060	explorer.exe
3060	explorer.exe
2456	svchost.exe
2456	svchost.exe
2456	svchost.exe
2456	svchost.exe
2456	svchost.exe
2456	svchost.exe
2456	svchost.exe
2456	svchost.exe
2456	svchost.exe
2456	svchost.exe
2456	svchost.exe
2456	svchost.exe
2456	svchost.exe
2456	svchost.exe
2456	svchost.exe
2456	svchost.exe
3060	explorer.exe
2456	svchost.exe
2456	svchost.exe
3060	explorer.exe
3060	explorer.exe
3060	explorer.exe
2456	svchost.exe
2456	svchost.exe
3060	explorer.exe
3060	explorer.exe
2456	svchost.exe
2456	svchost.exe
3060	explorer.exe
3060	explorer.exe
2456	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
3060	explorer.exe
2456	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
3060	explorer.exe
3060	explorer.exe
2500	spoolsv.exe
2500	spoolsv.exe
2456	svchost.exe
2456	svchost.exe
2860	spoolsv.exe
2860	spoolsv.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 3060	1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe	30
PID 1728 wrote to memory of 3060	1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe	30
PID 1728 wrote to memory of 3060	1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe	30
PID 1728 wrote to memory of 3060	1728	4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe	30
PID 3060 wrote to memory of 2500	3060	explorer.exe	31
PID 3060 wrote to memory of 2500	3060	explorer.exe	31
PID 3060 wrote to memory of 2500	3060	explorer.exe	31
PID 3060 wrote to memory of 2500	3060	explorer.exe	31
PID 2500 wrote to memory of 2456	2500	spoolsv.exe	32
PID 2500 wrote to memory of 2456	2500	spoolsv.exe	32
PID 2500 wrote to memory of 2456	2500	spoolsv.exe	32
PID 2500 wrote to memory of 2456	2500	spoolsv.exe	32
PID 2456 wrote to memory of 2860	2456	svchost.exe	33
PID 2456 wrote to memory of 2860	2456	svchost.exe	33
PID 2456 wrote to memory of 2860	2456	svchost.exe	33
PID 2456 wrote to memory of 2860	2456	svchost.exe	33
PID 3060 wrote to memory of 2776	3060	explorer.exe	34
PID 3060 wrote to memory of 2776	3060	explorer.exe	34
PID 3060 wrote to memory of 2776	3060	explorer.exe	34
PID 3060 wrote to memory of 2776	3060	explorer.exe	34
PID 2456 wrote to memory of 2824	2456	svchost.exe	35
PID 2456 wrote to memory of 2824	2456	svchost.exe	35
PID 2456 wrote to memory of 2824	2456	svchost.exe	35
PID 2456 wrote to memory of 2824	2456	svchost.exe	35
PID 2456 wrote to memory of 2968	2456	svchost.exe	39
PID 2456 wrote to memory of 2968	2456	svchost.exe	39
PID 2456 wrote to memory of 2968	2456	svchost.exe	39
PID 2456 wrote to memory of 2968	2456	svchost.exe	39
PID 2456 wrote to memory of 1312	2456	svchost.exe	41
PID 2456 wrote to memory of 1312	2456	svchost.exe	41
PID 2456 wrote to memory of 1312	2456	svchost.exe	41
PID 2456 wrote to memory of 1312	2456	svchost.exe	41

C:\Users\Admin\AppData\Local\Temp\4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.exe
"C:\Users\Admin\AppData\Local\Temp\4687c842f485a6eef9a77c7327ccb21aaad63c1048d1406518e3d9aab06a9870.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:1728
- \??\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:3060
- - \??\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:2500
  - - \??\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:2456
    - - \??\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:2860
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 21:22 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2824
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 21:23 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2968
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 21:24 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1312
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2776

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
04a74b722688f3bd7d67bbc692e66757

SHA1
507bd1dd93f98e61d13b79307ba9c5954e5dbb88

SHA256
51d244523009a794649077ed358e125b81e6655ec3cc67173ceec9fb28643b63

SHA512
da8259aca7f1938c4746ae6b1591bf4bd5011f88e09e103fc48a11a247355a8da30be9c203a12dbb37925cab0e1caf203f8d536da92da8da4b3ff3f82846c4da

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

Filesize
135KB

MD5
37753c985132d01c68671702cfc68bd9

SHA1
e95ef7ce9f47151bac11db269317f767eb555e0e

SHA256
0e3305742636558e15b8d2e6f9f375daecb99b20a50f0a7ff9d2d71b5e560980

SHA512
3d8b6e217088ebde69d92145357d8daded9260711c3814593667d77fa037439ca7825678e73562ce4d854c9a06ee4fb8bf6659ddf602092cc9f0138e0cc6ad82

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

Filesize
135KB

MD5
29144a5eeeed234227093d7f4ce3826d

SHA1
f7f6b0abf0c0f59d69dad0cd8630bcb90c416a4d

SHA256
bd56071ed4533adddd75cea97ff1edca5719e26bcd04b4e06431968f0b5592c9

SHA512
cced0d4c38518f7b4a7674608569a8c2b87f28dae4b8fd4dd8fd89254848c4f4473afac310374ece91f263987e7aa1f175d7f416c606d3758d2d0ab174fcaac2

Download Submit
memory/1728-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1728-10-0x00000000002B0000-0x00000000002CF000-memory.dmp

Filesize
124KB

Download
memory/1728-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2456-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2456-45-0x0000000000300000-0x000000000031F000-memory.dmp

Filesize
124KB

Download
memory/2500-41-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2860-40-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3060-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download