dd2cb275a6b081b68e9e4f441d86fec6a8ff4c76953ddcc6e67168d9d56b1d9d

Analysis

max time kernel
120s
max time network
123s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
25-08-2024 17:43

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General

Target

a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
Size

135KB
MD5

a0e7ed3d122dda4d6a7a8e43c262ec20
SHA1

582e84edf9fd3687f844289cd8db17932d7179f1
SHA256

dd2cb275a6b081b68e9e4f441d86fec6a8ff4c76953ddcc6e67168d9d56b1d9d
SHA512

f9a52c01f740040b506e92966164eac6d0a556d673b9f4320d33f6807dc15acb769e7115f6c1d0d58afb856e7b233ec566290c2a750286ee3134e7aa3edbd35d
SSDEEP

1536:UfsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbVLv6z:UVqoCl/YgjxEufVU0TbTyDDalpv6z

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-1-5-21-3502430532-24693940-2469786940-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
2564	explorer.exe
1932	spoolsv.exe
2344	svchost.exe
3012	spoolsv.exe

Loads dropped DLL 4 IoCs

pid	Process
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2564	explorer.exe
1932	spoolsv.exe
2344	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\tjud.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
File opened for modification	\??\c:\windows\resources\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\svchost.exe	spoolsv.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	a0e7ed3d122dda4d6a7a8e43c262ec20N.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
2624	schtasks.exe
1644	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2564	explorer.exe
2564	explorer.exe
2564	explorer.exe
2564	explorer.exe
2564	explorer.exe
2564	explorer.exe
2564	explorer.exe
2564	explorer.exe
2564	explorer.exe
2564	explorer.exe
2564	explorer.exe
2564	explorer.exe
2564	explorer.exe
2564	explorer.exe
2564	explorer.exe
2564	explorer.exe
2344	svchost.exe
2344	svchost.exe
2344	svchost.exe
2344	svchost.exe
2344	svchost.exe
2344	svchost.exe
2344	svchost.exe
2344	svchost.exe
2344	svchost.exe
2344	svchost.exe
2344	svchost.exe
2344	svchost.exe
2344	svchost.exe
2344	svchost.exe
2344	svchost.exe
2344	svchost.exe
2564	explorer.exe
2564	explorer.exe
2564	explorer.exe
2344	svchost.exe
2344	svchost.exe
2564	explorer.exe
2344	svchost.exe
2564	explorer.exe
2344	svchost.exe
2564	explorer.exe
2344	svchost.exe
2564	explorer.exe
2344	svchost.exe
2564	explorer.exe
2344	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2564	explorer.exe
2344	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
2564	explorer.exe
2564	explorer.exe
1932	spoolsv.exe
1932	spoolsv.exe
2344	svchost.exe
2344	svchost.exe
3012	spoolsv.exe
3012	spoolsv.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2864 wrote to memory of 2564	2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe	30
PID 2864 wrote to memory of 2564	2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe	30
PID 2864 wrote to memory of 2564	2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe	30
PID 2864 wrote to memory of 2564	2864	a0e7ed3d122dda4d6a7a8e43c262ec20N.exe	30
PID 2564 wrote to memory of 1932	2564	explorer.exe	31
PID 2564 wrote to memory of 1932	2564	explorer.exe	31
PID 2564 wrote to memory of 1932	2564	explorer.exe	31
PID 2564 wrote to memory of 1932	2564	explorer.exe	31
PID 1932 wrote to memory of 2344	1932	spoolsv.exe	32
PID 1932 wrote to memory of 2344	1932	spoolsv.exe	32
PID 1932 wrote to memory of 2344	1932	spoolsv.exe	32
PID 1932 wrote to memory of 2344	1932	spoolsv.exe	32
PID 2344 wrote to memory of 3012	2344	svchost.exe	33
PID 2344 wrote to memory of 3012	2344	svchost.exe	33
PID 2344 wrote to memory of 3012	2344	svchost.exe	33
PID 2344 wrote to memory of 3012	2344	svchost.exe	33
PID 2564 wrote to memory of 2704	2564	explorer.exe	34
PID 2564 wrote to memory of 2704	2564	explorer.exe	34
PID 2564 wrote to memory of 2704	2564	explorer.exe	34
PID 2564 wrote to memory of 2704	2564	explorer.exe	34
PID 2344 wrote to memory of 2624	2344	svchost.exe	35
PID 2344 wrote to memory of 2624	2344	svchost.exe	35
PID 2344 wrote to memory of 2624	2344	svchost.exe	35
PID 2344 wrote to memory of 2624	2344	svchost.exe	35
PID 2344 wrote to memory of 1644	2344	svchost.exe	38
PID 2344 wrote to memory of 1644	2344	svchost.exe	38
PID 2344 wrote to memory of 1644	2344	svchost.exe	38
PID 2344 wrote to memory of 1644	2344	svchost.exe	38

C:\Users\Admin\AppData\Local\Temp\a0e7ed3d122dda4d6a7a8e43c262ec20N.exe
"C:\Users\Admin\AppData\Local\Temp\a0e7ed3d122dda4d6a7a8e43c262ec20N.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:2864
- \??\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:2564
- - \??\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:1932
  - - \??\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:2344
    - - \??\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:3012
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 17:45 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2624
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 17:46 /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1644
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2704

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
dadb0390024e48747711546bdf12f132

SHA1
48553d31f16415022957ee7aa9abf217eec5248d

SHA256
e60f62c9f0410fdbf29aa7214d7e902af68187889d79409de2c446fe464bbe6c

SHA512
941bf7a960f0069e9fda2f35b18591cffc96d7d9e40c2cfd9ba42a183d35154425b7033a8522a7ceed98a30291ba9d70b23c2683b0b47f965045ac486f5a82e1

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

Filesize
135KB

MD5
a9926349fe8c0de474f14ed6c87a9715

SHA1
5f03b172ba89c62ddd0c746102ab9e96285d695f

SHA256
9b79a7bc44095e108b355b2e18f346c01bc8e32c752ac910b38476f5e4c5d0cc

SHA512
76987fbcc37da019cef69ed656e79595b931708c8f050863e9d95fdc5e29f8ec795fc88633cce6ca1c133f774df6b7f21e8cb5b22492872918c15ad72ec544a1

Download Submit
\Windows\Resources\svchost.exe

Filesize
135KB

MD5
1de74c501954a547591b88a782d556cb

SHA1
9351089a1a48d1441aa46d17432358a1479815d8

SHA256
2292f58ba59b45fcdfaa9f5c97924cddb2762fbc09621a5ece84bb4b09456313

SHA512
b1a2bc3c72486447c01164796e1d9ea1fdc0c874dfabf2d2ae25ec29d2497be6a3b9c961220dd065b32e42eb65e9a8e0114c849eac3bf1ec5d2d9bc1a3548c1c

Download Submit
memory/1932-41-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2344-44-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2564-43-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2864-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2864-8-0x00000000003D0000-0x00000000003EF000-memory.dmp

Filesize
124KB

Download
memory/2864-42-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3012-40-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download