7634cd402846900e69435d1161ea9317c0cc72f8a63992006cc0833764b486ae

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, 23:39

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General

Target

7634cd402846900e69435d1161ea9317c0cc72f8a63992006cc0833764b486ae.exe
Size

216KB
MD5

82980df5841ac2c05270f6e82134cd9a
SHA1

623e1d9f2f389d4732f53a053ebf1a7ae0b6a2a8
SHA256

7634cd402846900e69435d1161ea9317c0cc72f8a63992006cc0833764b486ae
SHA512

33985729a1b36bda9e59cd9eef4224d37c2125a23366a604b5b2778e79702f970dcaf1d3ac5020201ebb534ae6547e83100927dacf6d2d41060f85f4d96dd539
SSDEEP

3072:7vEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6uBL9iA:7vEN2U+T6i5LirrllHy4HUcMQY6C9iA

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-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\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
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
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

Executes dropped EXE 4 IoCs

pid	Process
2168	explorer.exe
740	spoolsv.exe
2456	svchost.exe
5080	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"	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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.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	7634cd402846900e69435d1161ea9317c0cc72f8a63992006cc0833764b486ae.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
4480	7634cd402846900e69435d1161ea9317c0cc72f8a63992006cc0833764b486ae.exe
4480	7634cd402846900e69435d1161ea9317c0cc72f8a63992006cc0833764b486ae.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2168	explorer.exe
2456	svchost.exe
2456	svchost.exe
2456	svchost.exe
2456	svchost.exe
2168	explorer.exe
2168	explorer.exe
2456	svchost.exe
2456	svchost.exe
2168	explorer.exe
2168	explorer.exe
2456	svchost.exe
2456	svchost.exe
2168	explorer.exe
2168	explorer.exe
2456	svchost.exe
2456	svchost.exe
2168	explorer.exe
2168	explorer.exe
2456	svchost.exe
2456	svchost.exe
2168	explorer.exe
2168	explorer.exe
2456	svchost.exe
2456	svchost.exe
2168	explorer.exe
2168	explorer.exe
2456	svchost.exe
2456	svchost.exe
2168	explorer.exe
2168	explorer.exe
2456	svchost.exe
2456	svchost.exe
2168	explorer.exe
2168	explorer.exe
2456	svchost.exe
2456	svchost.exe
2168	explorer.exe
2168	explorer.exe
2456	svchost.exe
2456	svchost.exe
2168	explorer.exe
2168	explorer.exe
2456	svchost.exe
2456	svchost.exe
2168	explorer.exe
2168	explorer.exe
2456	svchost.exe
2456	svchost.exe
2168	explorer.exe
2168	explorer.exe
2456	svchost.exe
2456	svchost.exe
2168	explorer.exe
2168	explorer.exe
2456	svchost.exe
2456	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2168	explorer.exe
2456	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4480	7634cd402846900e69435d1161ea9317c0cc72f8a63992006cc0833764b486ae.exe
4480	7634cd402846900e69435d1161ea9317c0cc72f8a63992006cc0833764b486ae.exe
2168	explorer.exe
2168	explorer.exe
740	spoolsv.exe
740	spoolsv.exe
2456	svchost.exe
2456	svchost.exe
5080	spoolsv.exe
5080	spoolsv.exe
2168	explorer.exe
2168	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4480 wrote to memory of 2168	4480	7634cd402846900e69435d1161ea9317c0cc72f8a63992006cc0833764b486ae.exe	81
PID 4480 wrote to memory of 2168	4480	7634cd402846900e69435d1161ea9317c0cc72f8a63992006cc0833764b486ae.exe	81
PID 4480 wrote to memory of 2168	4480	7634cd402846900e69435d1161ea9317c0cc72f8a63992006cc0833764b486ae.exe	81
PID 2168 wrote to memory of 740	2168	explorer.exe	82
PID 2168 wrote to memory of 740	2168	explorer.exe	82
PID 2168 wrote to memory of 740	2168	explorer.exe	82
PID 740 wrote to memory of 2456	740	spoolsv.exe	83
PID 740 wrote to memory of 2456	740	spoolsv.exe	83
PID 740 wrote to memory of 2456	740	spoolsv.exe	83
PID 2456 wrote to memory of 5080	2456	svchost.exe	84
PID 2456 wrote to memory of 5080	2456	svchost.exe	84
PID 2456 wrote to memory of 5080	2456	svchost.exe	84
PID 2456 wrote to memory of 4376	2456	svchost.exe	85
PID 2456 wrote to memory of 4376	2456	svchost.exe	85
PID 2456 wrote to memory of 4376	2456	svchost.exe	85
PID 2456 wrote to memory of 4364	2456	svchost.exe	94
PID 2456 wrote to memory of 4364	2456	svchost.exe	94
PID 2456 wrote to memory of 4364	2456	svchost.exe	94
PID 2456 wrote to memory of 3120	2456	svchost.exe	96
PID 2456 wrote to memory of 3120	2456	svchost.exe	96
PID 2456 wrote to memory of 3120	2456	svchost.exe	96

C:\Users\Admin\AppData\Local\Temp\7634cd402846900e69435d1161ea9317c0cc72f8a63992006cc0833764b486ae.exe
"C:\Users\Admin\AppData\Local\Temp\7634cd402846900e69435d1161ea9317c0cc72f8a63992006cc0833764b486ae.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4480
- \??\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:2168
- - \??\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:740
  - - \??\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:2456
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:5080
    - - C:\Windows\SysWOW64\at.exe
        
        at 23:41 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:4376
    - - C:\Windows\SysWOW64\at.exe
        
        at 23:42 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:4364
    - - C:\Windows\SysWOW64\at.exe
        
        at 23:43 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:3120

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
216KB

MD5
7df673668e160436e8fae5d33d0060ba

SHA1
f909efb9e370bcdc2e41bcd6b152cf93e3169748

SHA256
96d484ce0f305e1bec5ff3eaa788fbe572fb996c4729b8cdf5d764f368528f5b

SHA512
c8ca5c70e4868f507daafe2fbc05e12107580f29f5004ec7404537eb8e1c2ea207b9101dc619ec0d655bf0e62388aee7e4a82b218d6a1b23359113b3791a0ccf

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

Filesize
216KB

MD5
4e55f658a9eabefd000a40412435f0b3

SHA1
f0ae6f8b4a72a90424e13e12d7d541e5e7825d27

SHA256
710f6aacf0dc08ac0c165d6a2c28aba2fca3ae8d6907090aff2471e7a59ead7c

SHA512
b2faea4757f34346b7314533dfa5e1453ebc2d42f1b4d6eaadcf8417a6542b9a635bb70ffb295a64957d87bfe4d462429edc7da6ecaba44e9d62e53a94811cb2

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

Filesize
216KB

MD5
1237dbf138963d6c4285487e463e70e7

SHA1
ae3389fc9e13bfb06379956302377880f482d2a2

SHA256
2794de18cfa8a26e23c0039641a2f3dd15f81daac90743ee62610b5d0afc02f8

SHA512
0e72b42e33851fb1d7b4ecf3e0e7fb464de1231adf460843e5f2824f0fdeb93c2088fe39d4491b5bfc2422b298e961f6ff187dca6f86db0342325caf306124dd

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

Filesize
216KB

MD5
72c5ccfc3e7f37808cef372d54c4b7f8

SHA1
4f0e6e8c1c7f7d4ff38ecfa2823ae99ab08b1580

SHA256
3813a666fce67f385244a2158560481bb9e616937ba2d1c0f689ada1fec966b7

SHA512
10a5fd649e3b7169f52c0f6b1fd9a4470a6259cf4b01374daed02aaf04bd419ab3647411b6b643146b0683d1c3e5f2e73066e4ced21e7735efe0e0da6505f606

Download Submit
memory/740-36-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2168-9-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4480-0-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/4480-37-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/5080-35-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download