0e7c088a045fbb203cb52f54fa2f652d45d4925cae94d2792b2b5aab3a038cc4

Analysis

max time kernel
120s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
20/08/2024, 04:31

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General

Target

313917cbc6333c393853a909b9cb1d20N.exe
Size

135KB
MD5

313917cbc6333c393853a909b9cb1d20
SHA1

4eda2880961d16f58236fd697fd1a71511958da6
SHA256

0e7c088a045fbb203cb52f54fa2f652d45d4925cae94d2792b2b5aab3a038cc4
SHA512

d489db99cf25fcb5d498e03e6481b95824711acb21110e81c9be8470c6f24439edc9fd4c8930b1495a1ac0ae71bc8840f6278636fc7e7c58262460626cb57fe5
SSDEEP

1536:4fsEqouTRcG/Mzvgf7xEuvnXNTRdUzwTekUOisZ1yDDajtXbV5ft+e:4VqoCl/YgjxEufVU0TbTyDDalJ+e

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
3196	explorer.exe
5064	spoolsv.exe
3800	svchost.exe
3736	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"	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	313917cbc6333c393853a909b9cb1d20N.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 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	313917cbc6333c393853a909b9cb1d20N.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

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe
3196	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
3196	explorer.exe
3800	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
4832	313917cbc6333c393853a909b9cb1d20N.exe
4832	313917cbc6333c393853a909b9cb1d20N.exe
3196	explorer.exe
3196	explorer.exe
5064	spoolsv.exe
5064	spoolsv.exe
3800	svchost.exe
3800	svchost.exe
3736	spoolsv.exe
3736	spoolsv.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4832 wrote to memory of 3196	4832	313917cbc6333c393853a909b9cb1d20N.exe	84
PID 4832 wrote to memory of 3196	4832	313917cbc6333c393853a909b9cb1d20N.exe	84
PID 4832 wrote to memory of 3196	4832	313917cbc6333c393853a909b9cb1d20N.exe	84
PID 3196 wrote to memory of 5064	3196	explorer.exe	85
PID 3196 wrote to memory of 5064	3196	explorer.exe	85
PID 3196 wrote to memory of 5064	3196	explorer.exe	85
PID 5064 wrote to memory of 3800	5064	spoolsv.exe	86
PID 5064 wrote to memory of 3800	5064	spoolsv.exe	86
PID 5064 wrote to memory of 3800	5064	spoolsv.exe	86
PID 3800 wrote to memory of 3736	3800	svchost.exe	87
PID 3800 wrote to memory of 3736	3800	svchost.exe	87
PID 3800 wrote to memory of 3736	3800	svchost.exe	87

C:\Users\Admin\AppData\Local\Temp\313917cbc6333c393853a909b9cb1d20N.exe
"C:\Users\Admin\AppData\Local\Temp\313917cbc6333c393853a909b9cb1d20N.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:4832
- \??\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:3196
- - \??\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:5064
  - - \??\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:3800
    - - \??\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:3736

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\Themes\explorer.exe

Filesize
135KB

MD5
633e4890a5bdb0566678123f9bf80868

SHA1
79c3c3cf32e8e10261a85c753a85cb213ece2d00

SHA256
b0e754f19fc35de07a6da91d9ad468a5f0b9f0d5ac9b2f04b5df66931952b01c

SHA512
c60d2593e683b980bd5c9762af82b358a83b447334f03d3989e872ad22fa7150b04cfd8c31a73267d26186cedba98a87eb266b555bfebbeb188953339c84b970

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

Filesize
135KB

MD5
b64e497ccec58acb2a5a3b7b2842292e

SHA1
cc39e3ad380d84696ab0961c7b780dde6dd8f953

SHA256
433a840da5a0d767832be420ae43549fb13046df54a6b749bce6bd3e5ec3da36

SHA512
b299ff136b977f1ff09bd66712aa94480aa7a7f3af4d1f7ab63d92ece848a046e17515597440d2447dbd5a865607afa03cbfa4daad096ed605ab606e296e2213

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

Filesize
135KB

MD5
b48745dcc510e3f5a4bff727c8a5bc2a

SHA1
77634a0fb846d3b5c3914bd115cb5c074e40b1a7

SHA256
2fdd5e02e70ce5ec0f7ecad3a2a0fdac86323b6c2cea04a5ae35cd0a691774e2

SHA512
f0c74dd339669409ef492eef283b1bda4ecc957b7c491399c4622d8ba1ca35ba63c9b589c22ed027ec739bc319e2af35a7d19fbe7d172d0fc78c2f99efacbdd2

Download Submit
memory/3196-35-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3736-32-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3800-36-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4832-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4832-34-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/5064-33-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download