003dd6fec0a0beb289d7d5ab5db1a7be0e5d817e884949cc83e37070bd813b76

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
20/05/2024, 20:04

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

003dd6fec0a0beb289d7d5ab5db1a7be0e5d817e884949cc83e37070bd813b76.exe
Size

69KB
MD5

4b2749d64840214a4436e83243e44a37
SHA1

a3c12a438c10a6918114ee780ff28d586d5e856e
SHA256

003dd6fec0a0beb289d7d5ab5db1a7be0e5d817e884949cc83e37070bd813b76
SHA512

15ff28f2fc3927679dfa71b3a347f4c06599616301679fe5220975c9530fdd2c2acbc92cd0d810d1f22dfefd67cbad38202a5c4e41696b40ecc1c472d1cc135d
SSDEEP

1536:EJrFDMRyriCY/qXfatMp4Q2V6fIMxIpLw:0F8dCY85TE6fIMSRw

Score

10^/10

evasion persistence upx

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
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
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

Executes dropped EXE 4 IoCs

pid	Process
996	explorer.exe
1216	spoolsv.exe
4200	svchost.exe
1336	spoolsv.exe

UPX packed file 12 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/116-0-0x0000000000400000-0x0000000000434000-memory.dmp	upx
behavioral2/files/0x00080000000233c7-7.dat	upx
behavioral2/files/0x00080000000233c9-13.dat	upx
behavioral2/files/0x00080000000233cb-23.dat	upx
behavioral2/memory/4200-25-0x0000000000400000-0x0000000000434000-memory.dmp	upx
behavioral2/memory/1336-36-0x0000000000400000-0x0000000000434000-memory.dmp	upx
behavioral2/memory/116-40-0x0000000000400000-0x0000000000434000-memory.dmp	upx
behavioral2/memory/1216-38-0x0000000000400000-0x0000000000434000-memory.dmp	upx
behavioral2/files/0x00090000000233ca-41.dat	upx
behavioral2/memory/996-42-0x0000000000400000-0x0000000000434000-memory.dmp	upx
behavioral2/memory/4200-43-0x0000000000400000-0x0000000000434000-memory.dmp	upx
behavioral2/memory/996-52-0x0000000000400000-0x0000000000434000-memory.dmp	upx

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\explorer.exe	003dd6fec0a0beb289d7d5ab5db1a7be0e5d817e884949cc83e37070bd813b76.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
File opened for modification	C:\Windows\system\udsys.exe	explorer.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
116	003dd6fec0a0beb289d7d5ab5db1a7be0e5d817e884949cc83e37070bd813b76.exe
116	003dd6fec0a0beb289d7d5ab5db1a7be0e5d817e884949cc83e37070bd813b76.exe
996	explorer.exe
996	explorer.exe
996	explorer.exe
996	explorer.exe
996	explorer.exe
996	explorer.exe
996	explorer.exe
996	explorer.exe
4200	svchost.exe
4200	svchost.exe
4200	svchost.exe
4200	svchost.exe
4200	svchost.exe
996	explorer.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe
4200	svchost.exe
996	explorer.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe
4200	svchost.exe
996	explorer.exe
996	explorer.exe
4200	svchost.exe
4200	svchost.exe
996	explorer.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe
996	explorer.exe
4200	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
996	explorer.exe
4200	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
116	003dd6fec0a0beb289d7d5ab5db1a7be0e5d817e884949cc83e37070bd813b76.exe
116	003dd6fec0a0beb289d7d5ab5db1a7be0e5d817e884949cc83e37070bd813b76.exe
996	explorer.exe
996	explorer.exe
1216	spoolsv.exe
1216	spoolsv.exe
4200	svchost.exe
4200	svchost.exe
1336	spoolsv.exe
1336	spoolsv.exe
996	explorer.exe
996	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 116 wrote to memory of 996	116	003dd6fec0a0beb289d7d5ab5db1a7be0e5d817e884949cc83e37070bd813b76.exe	82
PID 116 wrote to memory of 996	116	003dd6fec0a0beb289d7d5ab5db1a7be0e5d817e884949cc83e37070bd813b76.exe	82
PID 116 wrote to memory of 996	116	003dd6fec0a0beb289d7d5ab5db1a7be0e5d817e884949cc83e37070bd813b76.exe	82
PID 996 wrote to memory of 1216	996	explorer.exe	83
PID 996 wrote to memory of 1216	996	explorer.exe	83
PID 996 wrote to memory of 1216	996	explorer.exe	83
PID 1216 wrote to memory of 4200	1216	spoolsv.exe	84
PID 1216 wrote to memory of 4200	1216	spoolsv.exe	84
PID 1216 wrote to memory of 4200	1216	spoolsv.exe	84
PID 4200 wrote to memory of 1336	4200	svchost.exe	85
PID 4200 wrote to memory of 1336	4200	svchost.exe	85
PID 4200 wrote to memory of 1336	4200	svchost.exe	85
PID 4200 wrote to memory of 4772	4200	svchost.exe	86
PID 4200 wrote to memory of 4772	4200	svchost.exe	86
PID 4200 wrote to memory of 4772	4200	svchost.exe	86
PID 4200 wrote to memory of 2536	4200	svchost.exe	96
PID 4200 wrote to memory of 2536	4200	svchost.exe	96
PID 4200 wrote to memory of 2536	4200	svchost.exe	96
PID 4200 wrote to memory of 2208	4200	svchost.exe	98
PID 4200 wrote to memory of 2208	4200	svchost.exe	98
PID 4200 wrote to memory of 2208	4200	svchost.exe	98

C:\Users\Admin\AppData\Local\Temp\003dd6fec0a0beb289d7d5ab5db1a7be0e5d817e884949cc83e37070bd813b76.exe
"C:\Users\Admin\AppData\Local\Temp\003dd6fec0a0beb289d7d5ab5db1a7be0e5d817e884949cc83e37070bd813b76.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:116
- \??\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:996
- - \??\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:1216
  - - \??\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:4200
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        Suspicious use of SetWindowsHookEx
        
        PID:1336
    - - C:\Windows\SysWOW64\at.exe
        
        at 20:43 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:4772
    - - C:\Windows\SysWOW64\at.exe
        
        at 20:44 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:2536
    - - C:\Windows\SysWOW64\at.exe
        
        at 20:45 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:2208

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
69KB

MD5
e9cbf86f2483e7b002e4092fc9bf1da4

SHA1
e2d73bb6fa83a685582d651b6ee6bdf0e497ea85

SHA256
fc47e525e2fefdc299276b22e64e746dfcee52f363a36f760011900430c637bf

SHA512
e81b5d2c8e9b89c65ce8b94528c7f4c594d4cf1f74788e137792779c22b93d866d61b056a2d43a6d9cf8ad2580f1d3502fed733f953b8ca1a5a32275f5296cba

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

Filesize
69KB

MD5
3313ce16f04ff2e1531deb7aeace31d0

SHA1
8686a45b35da384c2d10df9a82e38746356a5acd

SHA256
aaf0992f5d1e961f0fdd92f44582c24ec251e13f044e8fc1e71c02ba9a982e90

SHA512
fa13c634dbfcdad50e76b14a2b9ab3b6c8d9b1f56af94b3b09dded7d19bcf85ada118c316a2a460ed7937e6efb908140cf5e66d6bacdd72e0600b11f3a900811

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

Filesize
69KB

MD5
2da3d97c3ec52f346fbcf3b9b2586779

SHA1
1a3a73e607f33eb74386d8bb3946f712575ad4d2

SHA256
9a8408e76f7ba7356515739140cf384144fd229e117756ec631e4a88ec361adc

SHA512
524bd041bc977ac2ee75cd9923f27b5ab2655370232b15f0cf927156aa164fabd6a2c1dd1d769bb9d7e43e317bc2c6df28111dd754507565b28c653191dd763d

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

Filesize
70KB

MD5
7da7dde3b1bdf3c36f5c3a8cd2a5484a

SHA1
8801b763d4cc6c70e3e9766b4e12730150523b43

SHA256
4f4ec9aa9548763da1ac509e7cb4409fdb5597520c92d6761709f472b1734dcb

SHA512
b6258cc2393b7d7ad1f1d3d692b7b32169105ee804b7938416219010e095ed78ab821dfa4ee5c8327eca73cbedd3bfb3e854e5719e85a02dbbfd53a1a32d410f

Download Submit
memory/116-0-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/116-40-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/996-42-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/996-52-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1216-38-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1336-36-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4200-25-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4200-43-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download