1db8c87ffb3f7291885afe5d9be823bb4ddd7825fa4d09e32e530eaca43edc8a

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11/06/2024, 19:21

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

1db8c87ffb3f7291885afe5d9be823bb4ddd7825fa4d09e32e530eaca43edc8a.exe
Size

206KB
MD5

57eb5252c1c32b79c0a8a159d3746ed4
SHA1

363a253435345172a4e93e2e9b5e697bd9026f33
SHA256

1db8c87ffb3f7291885afe5d9be823bb4ddd7825fa4d09e32e530eaca43edc8a
SHA512

12e01bb5e4cd0778ddfeb89a49cfc01459d99a8607798c09d037abd754397d0a02f80acf30a6ac7069b1b58219328ca799a2e854cf50bcd31a768eed5ff2cccc
SSDEEP

3072:zvEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6unl:zvEN2U+T6i5LirrllHy4HUcMQY6e

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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.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
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
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

Executes dropped EXE 4 IoCs

pid	Process
4684	explorer.exe
228	spoolsv.exe
3096	svchost.exe
1020	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\\system\\explorer.exe RO"	explorer.exe
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

Drops file in Windows directory 6 IoCs

description	ioc	Process
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
File opened for modification	C:\Windows\system\udsys.exe	explorer.exe
File opened for modification	\??\c:\windows\system\explorer.exe	1db8c87ffb3f7291885afe5d9be823bb4ddd7825fa4d09e32e530eaca43edc8a.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
660	1db8c87ffb3f7291885afe5d9be823bb4ddd7825fa4d09e32e530eaca43edc8a.exe
660	1db8c87ffb3f7291885afe5d9be823bb4ddd7825fa4d09e32e530eaca43edc8a.exe
4684	explorer.exe
4684	explorer.exe
4684	explorer.exe
4684	explorer.exe
4684	explorer.exe
4684	explorer.exe
3096	svchost.exe
3096	svchost.exe
3096	svchost.exe
3096	svchost.exe
4684	explorer.exe
4684	explorer.exe
3096	svchost.exe
3096	svchost.exe
4684	explorer.exe
4684	explorer.exe
3096	svchost.exe
3096	svchost.exe
4684	explorer.exe
4684	explorer.exe
3096	svchost.exe
3096	svchost.exe
4684	explorer.exe
4684	explorer.exe
3096	svchost.exe
3096	svchost.exe
4684	explorer.exe
4684	explorer.exe
3096	svchost.exe
3096	svchost.exe
4684	explorer.exe
4684	explorer.exe
3096	svchost.exe
3096	svchost.exe
4684	explorer.exe
4684	explorer.exe
3096	svchost.exe
3096	svchost.exe
4684	explorer.exe
4684	explorer.exe
3096	svchost.exe
3096	svchost.exe
4684	explorer.exe
4684	explorer.exe
3096	svchost.exe
3096	svchost.exe
4684	explorer.exe
4684	explorer.exe
3096	svchost.exe
3096	svchost.exe
4684	explorer.exe
4684	explorer.exe
3096	svchost.exe
3096	svchost.exe
4684	explorer.exe
4684	explorer.exe
3096	svchost.exe
3096	svchost.exe
4684	explorer.exe
4684	explorer.exe
3096	svchost.exe
3096	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
4684	explorer.exe
3096	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
660	1db8c87ffb3f7291885afe5d9be823bb4ddd7825fa4d09e32e530eaca43edc8a.exe
660	1db8c87ffb3f7291885afe5d9be823bb4ddd7825fa4d09e32e530eaca43edc8a.exe
4684	explorer.exe
4684	explorer.exe
228	spoolsv.exe
228	spoolsv.exe
3096	svchost.exe
3096	svchost.exe
1020	spoolsv.exe
1020	spoolsv.exe
4684	explorer.exe
4684	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 660 wrote to memory of 4684	660	1db8c87ffb3f7291885afe5d9be823bb4ddd7825fa4d09e32e530eaca43edc8a.exe	82
PID 660 wrote to memory of 4684	660	1db8c87ffb3f7291885afe5d9be823bb4ddd7825fa4d09e32e530eaca43edc8a.exe	82
PID 660 wrote to memory of 4684	660	1db8c87ffb3f7291885afe5d9be823bb4ddd7825fa4d09e32e530eaca43edc8a.exe	82
PID 4684 wrote to memory of 228	4684	explorer.exe	83
PID 4684 wrote to memory of 228	4684	explorer.exe	83
PID 4684 wrote to memory of 228	4684	explorer.exe	83
PID 228 wrote to memory of 3096	228	spoolsv.exe	85
PID 228 wrote to memory of 3096	228	spoolsv.exe	85
PID 228 wrote to memory of 3096	228	spoolsv.exe	85
PID 3096 wrote to memory of 1020	3096	svchost.exe	86
PID 3096 wrote to memory of 1020	3096	svchost.exe	86
PID 3096 wrote to memory of 1020	3096	svchost.exe	86
PID 3096 wrote to memory of 3192	3096	svchost.exe	88
PID 3096 wrote to memory of 3192	3096	svchost.exe	88
PID 3096 wrote to memory of 3192	3096	svchost.exe	88
PID 3096 wrote to memory of 2368	3096	svchost.exe	98
PID 3096 wrote to memory of 2368	3096	svchost.exe	98
PID 3096 wrote to memory of 2368	3096	svchost.exe	98
PID 3096 wrote to memory of 4920	3096	svchost.exe	100
PID 3096 wrote to memory of 4920	3096	svchost.exe	100
PID 3096 wrote to memory of 4920	3096	svchost.exe	100

C:\Users\Admin\AppData\Local\Temp\1db8c87ffb3f7291885afe5d9be823bb4ddd7825fa4d09e32e530eaca43edc8a.exe
"C:\Users\Admin\AppData\Local\Temp\1db8c87ffb3f7291885afe5d9be823bb4ddd7825fa4d09e32e530eaca43edc8a.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:660
- \??\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:4684
- - \??\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:228
  - - \??\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:3096
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:1020
    - - C:\Windows\SysWOW64\at.exe
        
        at 19:23 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:3192
    - - C:\Windows\SysWOW64\at.exe
        
        at 19:24 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:2368
    - - C:\Windows\SysWOW64\at.exe
        
        at 19:25 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:4920

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

Loading Replay Monitor...

Downloads

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

Filesize
206KB

MD5
60b1e4a99f9ee8cd07716d6b32a91e52

SHA1
417a175eeeac903996a211d240bffae2f73e0eff

SHA256
ce3957ac48f97b53c3ae5ccc5daa94ccaace61a8135e1b436267e541c44dfc53

SHA512
60eab100e58e9bd62f1813255e995276b55c6ce67d42e4e93cac9a223f5177067bd8fd1b51c064951079819bb7dd2f8b49aaaeea8031e18c3f11fbb21357fe67

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

Filesize
206KB

MD5
1706d41c83bd64b9418556a19103d8f8

SHA1
3e3300bda56334fb748012bca2249627bd69f547

SHA256
bea2ae76e8dcd85b37a8a488fb9ab7244990a1ef8ef230ed7045e73f8423694f

SHA512
fedab1cd815405c0a1d61a67179d51e6bc98504c63360204e346534444d499970bd79b6aaeb43867ccfd0644e662039e9b986b080160a23416d66f73a2659e92

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

Filesize
206KB

MD5
8871f8beb923c7b876c1a4353ef068ca

SHA1
0ca0144d110dfd603ad15b88524ab0f023fe9eff

SHA256
19d21ea5d3b3d74d5c6e52937563ee1b47fe4c9178bb382e0fec1d147d65dc53

SHA512
7b2155cf7a0133535a9250b6f142b435095d5e4bb43fa1e0f6d8ceed9753837b1567faf7eced2a5607cf92b739cedeac35bfbee5446fed414cab1c47d6ad7826

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

Filesize
206KB

MD5
319fcd2ed675b288db8655ce6af91888

SHA1
a3d11bf004c1c89c721cf70dc81efff8c4ac602e

SHA256
88477e3759562afc090b1141d16935177b713e466fc08815dbc69ffb9a3f3abb

SHA512
cdd796353da123ccccba9e3e3e8ec87a6ded399707529a2fddc9d84130279633a3f1b6ca85461f5d231899a5e1b4d8b5a33896025d5aff519689d783655bfecc

Download Submit