08528cc1a9100ce58f9e1c83d6aba4ad35ca8f1cf181be8ced1a3fe694faf7bb

Analysis

max time kernel
156s
max time network
164s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
15/10/2023, 19:48

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General

Target

de43b0c08e579bc5bb59493ea848b8b0_exe32.exe
Size

206KB
MD5

de43b0c08e579bc5bb59493ea848b8b0
SHA1

1bb15ce188d11b7f07fa6cdc4eb1d26f8725ebaf
SHA256

08528cc1a9100ce58f9e1c83d6aba4ad35ca8f1cf181be8ced1a3fe694faf7bb
SHA512

987cfad042b9a85ca4037f92243397bd31f506a5d5be96086fffc50389f1bf4fd92dde9d65eba470ab8ee89701c3cbf14b8b35372fb8d4943a93aedd7a546a9f
SSDEEP

3072:avEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6un9:avEN2U+T6i5LirrllHy4HUcMQY6W

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	svchost.exe

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-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe

Modifies Installed Components in the registry 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	explorer.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
3216	explorer.exe
2932	spoolsv.exe
2224	svchost.exe
1280	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\Svchost = "c:\\windows\\system\\svchost.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	explorer.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system\udsys.exe	explorer.exe
File opened for modification	\??\c:\windows\system\explorer.exe	de43b0c08e579bc5bb59493ea848b8b0_exe32.exe
File opened for modification	\??\c:\windows\system\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	spoolsv.exe
File opened for modification	\??\c:\windows\system\explorer.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4948	de43b0c08e579bc5bb59493ea848b8b0_exe32.exe
4948	de43b0c08e579bc5bb59493ea848b8b0_exe32.exe
3216	explorer.exe
3216	explorer.exe
2224	svchost.exe
3216	explorer.exe
3216	explorer.exe
2224	svchost.exe
2224	svchost.exe
2224	svchost.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
2224	svchost.exe
2224	svchost.exe
3216	explorer.exe
3216	explorer.exe
2224	svchost.exe
2224	svchost.exe
3216	explorer.exe
3216	explorer.exe
2224	svchost.exe
2224	svchost.exe
3216	explorer.exe
3216	explorer.exe
2224	svchost.exe
2224	svchost.exe
3216	explorer.exe
3216	explorer.exe
2224	svchost.exe
2224	svchost.exe
3216	explorer.exe
3216	explorer.exe
2224	svchost.exe
2224	svchost.exe
3216	explorer.exe
3216	explorer.exe
2224	svchost.exe
2224	svchost.exe
3216	explorer.exe
3216	explorer.exe
2224	svchost.exe
2224	svchost.exe
3216	explorer.exe
3216	explorer.exe
2224	svchost.exe
2224	svchost.exe
3216	explorer.exe
3216	explorer.exe
2224	svchost.exe
2224	svchost.exe
3216	explorer.exe
3216	explorer.exe
2224	svchost.exe
2224	svchost.exe
3216	explorer.exe
3216	explorer.exe
2224	svchost.exe
2224	svchost.exe
3216	explorer.exe
3216	explorer.exe
2224	svchost.exe
2224	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2224	svchost.exe
3216	explorer.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4948	de43b0c08e579bc5bb59493ea848b8b0_exe32.exe
4948	de43b0c08e579bc5bb59493ea848b8b0_exe32.exe
3216	explorer.exe
3216	explorer.exe
2932	spoolsv.exe
2932	spoolsv.exe
2224	svchost.exe
2224	svchost.exe
1280	spoolsv.exe
1280	spoolsv.exe
3216	explorer.exe
3216	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4948 wrote to memory of 3216	4948	de43b0c08e579bc5bb59493ea848b8b0_exe32.exe	83
PID 4948 wrote to memory of 3216	4948	de43b0c08e579bc5bb59493ea848b8b0_exe32.exe	83
PID 4948 wrote to memory of 3216	4948	de43b0c08e579bc5bb59493ea848b8b0_exe32.exe	83
PID 3216 wrote to memory of 2932	3216	explorer.exe	84
PID 3216 wrote to memory of 2932	3216	explorer.exe	84
PID 3216 wrote to memory of 2932	3216	explorer.exe	84
PID 2932 wrote to memory of 2224	2932	spoolsv.exe	85
PID 2932 wrote to memory of 2224	2932	spoolsv.exe	85
PID 2932 wrote to memory of 2224	2932	spoolsv.exe	85
PID 2224 wrote to memory of 1280	2224	svchost.exe	86
PID 2224 wrote to memory of 1280	2224	svchost.exe	86
PID 2224 wrote to memory of 1280	2224	svchost.exe	86
PID 2224 wrote to memory of 3132	2224	svchost.exe	87
PID 2224 wrote to memory of 3132	2224	svchost.exe	87
PID 2224 wrote to memory of 3132	2224	svchost.exe	87
PID 2224 wrote to memory of 1764	2224	svchost.exe	98
PID 2224 wrote to memory of 1764	2224	svchost.exe	98
PID 2224 wrote to memory of 1764	2224	svchost.exe	98
PID 2224 wrote to memory of 2416	2224	svchost.exe	101
PID 2224 wrote to memory of 2416	2224	svchost.exe	101
PID 2224 wrote to memory of 2416	2224	svchost.exe	101

C:\Users\Admin\AppData\Local\Temp\de43b0c08e579bc5bb59493ea848b8b0_exe32.exe
"C:\Users\Admin\AppData\Local\Temp\de43b0c08e579bc5bb59493ea848b8b0_exe32.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4948
- \??\c:\windows\system\explorer.exe
  c:\windows\system\explorer.exe
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - Modifies Installed Components in the registry
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3216
- - \??\c:\windows\system\spoolsv.exe
    c:\windows\system\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2932
  - - \??\c:\windows\system\svchost.exe
      c:\windows\system\svchost.exe
      4⤵
      Modifies WinLogon for persistence
      Modifies visiblity of hidden/system files in Explorer
      Modifies Installed Components in the registry
      Executes dropped EXE
      Adds Run key to start application
      Drops file in Windows directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2224
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:1280
    - - C:\Windows\SysWOW64\at.exe
        
        at 01:16 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:3132
    - - C:\Windows\SysWOW64\at.exe
        
        at 01:17 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:1764
    - - C:\Windows\SysWOW64\at.exe
        
        at 01:18 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:2416

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

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\mrsys.exe

Filesize
206KB

MD5
489ec565bbef519eecf4f210c3545b0e

SHA1
b7debe2d5433c6e61773c850a3a8ca5e6cbe73d3

SHA256
b2ea1827b445c3c8429bd4ca02a36ff3ffccaa1d6d0ee5e9617e7c1b1a9d0ea1

SHA512
10e01d0864d0d253ab7f4452a5110d027cbafcbf3f7b1206ff830575ebdf2ad73ea437610c1b59d7152df56d727e9303d8775d9ed88315cb7b6158cba3117bbb

Download Submit
C:\Users\Admin\AppData\Roaming\mrsys.exe

Filesize
206KB

MD5
489ec565bbef519eecf4f210c3545b0e

SHA1
b7debe2d5433c6e61773c850a3a8ca5e6cbe73d3

SHA256
b2ea1827b445c3c8429bd4ca02a36ff3ffccaa1d6d0ee5e9617e7c1b1a9d0ea1

SHA512
10e01d0864d0d253ab7f4452a5110d027cbafcbf3f7b1206ff830575ebdf2ad73ea437610c1b59d7152df56d727e9303d8775d9ed88315cb7b6158cba3117bbb

Download Submit
C:\Windows\System\explorer.exe

Filesize
206KB

MD5
cb957032e66dec12632511d550f3c35d

SHA1
c50a2ab911db664783657c6f424d291969b5b6eb

SHA256
29fe16863a9442e401cc2cc3bbe19a3d63f803254cf9bb8cf1def592a6f4e8d0

SHA512
d7eafe2f71a014b5c14b361d33ebc6ea5988c93480e6a98e12c7e53879967ece0ac8206befcb9623b2e8c90816beec8a14a58c94ea2797a7654960a52171ca6b

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

Filesize
206KB

MD5
aedff80296a457fda4bc9e0847f5d30a

SHA1
eb6df9f89fc808322f4e5dcda987f298478aee04

SHA256
b77ced80fc2fc2ffa48362373efdb4f1c83b1230787abf5d2b51cce0b463009e

SHA512
aa28d3a540bfed80019b8fdd6c650e37471773f78c666b116823caae525b6769c75e17d3395f4ef09089be36d05f0a1b821d688091edfce5db9cb840d3f91ec9

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

Filesize
206KB

MD5
aedff80296a457fda4bc9e0847f5d30a

SHA1
eb6df9f89fc808322f4e5dcda987f298478aee04

SHA256
b77ced80fc2fc2ffa48362373efdb4f1c83b1230787abf5d2b51cce0b463009e

SHA512
aa28d3a540bfed80019b8fdd6c650e37471773f78c666b116823caae525b6769c75e17d3395f4ef09089be36d05f0a1b821d688091edfce5db9cb840d3f91ec9

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

Filesize
206KB

MD5
aedff80296a457fda4bc9e0847f5d30a

SHA1
eb6df9f89fc808322f4e5dcda987f298478aee04

SHA256
b77ced80fc2fc2ffa48362373efdb4f1c83b1230787abf5d2b51cce0b463009e

SHA512
aa28d3a540bfed80019b8fdd6c650e37471773f78c666b116823caae525b6769c75e17d3395f4ef09089be36d05f0a1b821d688091edfce5db9cb840d3f91ec9

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

Filesize
206KB

MD5
682da22792c70c77b677b4ed7d0e53f3

SHA1
2f4b46030c8100872240ac003ee238d11f2c6d1e

SHA256
087299df07de6cdb705ba1cec471e37c028a9c4fc90fa080950640b0dd0c5ed1

SHA512
e610279c49e4881c8e99fcbf2309405457a2ab74c5670bb303d825e18967022c49473a94d7b7d0dda4682cf603c514a40aa27528b51cf3692eb2e947f8810951

Download Submit
\??\c:\windows\system\explorer.exe

Filesize
206KB

MD5
cb957032e66dec12632511d550f3c35d

SHA1
c50a2ab911db664783657c6f424d291969b5b6eb

SHA256
29fe16863a9442e401cc2cc3bbe19a3d63f803254cf9bb8cf1def592a6f4e8d0

SHA512
d7eafe2f71a014b5c14b361d33ebc6ea5988c93480e6a98e12c7e53879967ece0ac8206befcb9623b2e8c90816beec8a14a58c94ea2797a7654960a52171ca6b

Download Submit
\??\c:\windows\system\spoolsv.exe

Filesize
206KB

MD5
aedff80296a457fda4bc9e0847f5d30a

SHA1
eb6df9f89fc808322f4e5dcda987f298478aee04

SHA256
b77ced80fc2fc2ffa48362373efdb4f1c83b1230787abf5d2b51cce0b463009e

SHA512
aa28d3a540bfed80019b8fdd6c650e37471773f78c666b116823caae525b6769c75e17d3395f4ef09089be36d05f0a1b821d688091edfce5db9cb840d3f91ec9

Download Submit
\??\c:\windows\system\svchost.exe

Filesize
206KB

MD5
682da22792c70c77b677b4ed7d0e53f3

SHA1
2f4b46030c8100872240ac003ee238d11f2c6d1e

SHA256
087299df07de6cdb705ba1cec471e37c028a9c4fc90fa080950640b0dd0c5ed1

SHA512
e610279c49e4881c8e99fcbf2309405457a2ab74c5670bb303d825e18967022c49473a94d7b7d0dda4682cf603c514a40aa27528b51cf3692eb2e947f8810951

Download Submit
memory/1280-32-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2224-42-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2932-33-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3216-41-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4948-0-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4948-40-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download