396d291c1bb63139881672d6c17312d902232cd4b3e1a4d1fe0be35a582ed006

Analysis

max time kernel
150s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13/09/2024, 20:35

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General

Target

396d291c1bb63139881672d6c17312d902232cd4b3e1a4d1fe0be35a582ed006.exe
Size

206KB
MD5

0a4f5b0d9b6a7517772ee7814937a51c
SHA1

bc67dad5b0f137abc94d7acbb3567bb5a3af4f73
SHA256

396d291c1bb63139881672d6c17312d902232cd4b3e1a4d1fe0be35a582ed006
SHA512

585b15c83d398b04b0160aeddbf9e76414f16dd85de726d6ac617e7a0a83ae53420ed7b1e1a5cd3bf8626d01e8505aa8594e788f42850a9a1f9c86a75965bb3d
SSDEEP

3072:5vEfVUzSLhIVbV6i5LirrlZrHyrUHUckoMQ2RN6unu:5vEN2U+T6i5LirrllHy4HUcMQY6p

Score

10^/10

discovery 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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Boot or Logon Autostart Execution: Active Setup 2 TTPs 8 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

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"	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
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

Executes dropped EXE 4 IoCs

pid	Process
2044	explorer.exe
2064	spoolsv.exe
2828	svchost.exe
2688	spoolsv.exe

Loads dropped DLL 8 IoCs

pid	Process
2492	396d291c1bb63139881672d6c17312d902232cd4b3e1a4d1fe0be35a582ed006.exe
2492	396d291c1bb63139881672d6c17312d902232cd4b3e1a4d1fe0be35a582ed006.exe
2044	explorer.exe
2044	explorer.exe
2064	spoolsv.exe
2064	spoolsv.exe
2828	svchost.exe
2828	svchost.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\svchost.exe	svchost.exe
File opened for modification	C:\Windows\system\udsys.exe	explorer.exe
File opened for modification	\??\c:\windows\system\explorer.exe	396d291c1bb63139881672d6c17312d902232cd4b3e1a4d1fe0be35a582ed006.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

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 8 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	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	at.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	396d291c1bb63139881672d6c17312d902232cd4b3e1a4d1fe0be35a582ed006.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2492	396d291c1bb63139881672d6c17312d902232cd4b3e1a4d1fe0be35a582ed006.exe
2044	explorer.exe
2044	explorer.exe
2044	explorer.exe
2828	svchost.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe
2044	explorer.exe
2828	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2044	explorer.exe
2828	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2492	396d291c1bb63139881672d6c17312d902232cd4b3e1a4d1fe0be35a582ed006.exe
2492	396d291c1bb63139881672d6c17312d902232cd4b3e1a4d1fe0be35a582ed006.exe
2044	explorer.exe
2044	explorer.exe
2064	spoolsv.exe
2064	spoolsv.exe
2828	svchost.exe
2828	svchost.exe
2688	spoolsv.exe
2688	spoolsv.exe
2044	explorer.exe
2044	explorer.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 2044	2492	396d291c1bb63139881672d6c17312d902232cd4b3e1a4d1fe0be35a582ed006.exe	31
PID 2492 wrote to memory of 2044	2492	396d291c1bb63139881672d6c17312d902232cd4b3e1a4d1fe0be35a582ed006.exe	31
PID 2492 wrote to memory of 2044	2492	396d291c1bb63139881672d6c17312d902232cd4b3e1a4d1fe0be35a582ed006.exe	31
PID 2492 wrote to memory of 2044	2492	396d291c1bb63139881672d6c17312d902232cd4b3e1a4d1fe0be35a582ed006.exe	31
PID 2044 wrote to memory of 2064	2044	explorer.exe	32
PID 2044 wrote to memory of 2064	2044	explorer.exe	32
PID 2044 wrote to memory of 2064	2044	explorer.exe	32
PID 2044 wrote to memory of 2064	2044	explorer.exe	32
PID 2064 wrote to memory of 2828	2064	spoolsv.exe	33
PID 2064 wrote to memory of 2828	2064	spoolsv.exe	33
PID 2064 wrote to memory of 2828	2064	spoolsv.exe	33
PID 2064 wrote to memory of 2828	2064	spoolsv.exe	33
PID 2828 wrote to memory of 2688	2828	svchost.exe	34
PID 2828 wrote to memory of 2688	2828	svchost.exe	34
PID 2828 wrote to memory of 2688	2828	svchost.exe	34
PID 2828 wrote to memory of 2688	2828	svchost.exe	34
PID 2828 wrote to memory of 2728	2828	svchost.exe	35
PID 2828 wrote to memory of 2728	2828	svchost.exe	35
PID 2828 wrote to memory of 2728	2828	svchost.exe	35
PID 2828 wrote to memory of 2728	2828	svchost.exe	35
PID 2828 wrote to memory of 1028	2828	svchost.exe	37
PID 2828 wrote to memory of 1028	2828	svchost.exe	37
PID 2828 wrote to memory of 1028	2828	svchost.exe	37
PID 2828 wrote to memory of 1028	2828	svchost.exe	37
PID 2828 wrote to memory of 2900	2828	svchost.exe	40
PID 2828 wrote to memory of 2900	2828	svchost.exe	40
PID 2828 wrote to memory of 2900	2828	svchost.exe	40
PID 2828 wrote to memory of 2900	2828	svchost.exe	40

C:\Users\Admin\AppData\Local\Temp\396d291c1bb63139881672d6c17312d902232cd4b3e1a4d1fe0be35a582ed006.exe
"C:\Users\Admin\AppData\Local\Temp\396d291c1bb63139881672d6c17312d902232cd4b3e1a4d1fe0be35a582ed006.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2492
- \??\c:\windows\system\explorer.exe
  c:\windows\system\explorer.exe
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - Boot or Logon Autostart Execution: Active Setup
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - 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:2044
- - \??\c:\windows\system\spoolsv.exe
    c:\windows\system\spoolsv.exe SE
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2064
  - - \??\c:\windows\system\svchost.exe
      c:\windows\system\svchost.exe
      4⤵
      Modifies WinLogon for persistence
      Modifies visiblity of hidden/system files in Explorer
      Boot or Logon Autostart Execution: Active Setup
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      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:2828
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:2688
    - - C:\Windows\SysWOW64\at.exe
        
        at 20:37 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2728
    - - C:\Windows\SysWOW64\at.exe
        
        at 20:38 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:1028
    - - C:\Windows\SysWOW64\at.exe
        
        at 20:39 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Active Setup

T1547.014

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

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

Filesize
206KB

MD5
0f77a9bc23082f1ed0e8d6406651de51

SHA1
42b0095924e5bb3e6775b6c3c130992b15d8d129

SHA256
4e884aac627a8b7079b00e64261cc63bfaea2ec9c9904106d5255aca757188d3

SHA512
3660662a166561d869595853e77dfb36c0c43314361759934b4a3a598b4aa7f21d6bd6d488432b62f6b10b65eaa7844093b2b616fca16e2d614559430084ca6c

Download Submit
\Windows\system\explorer.exe

Filesize
206KB

MD5
a67d3b2a0d15546866e671e571e23ac2

SHA1
4298f172cacace343aeb24358d3f239a07e7a764

SHA256
820edd8f84ffb92dbd98d531f4a57ef628965ac90e57a4ef8c4e7f23ae27ba77

SHA512
a0a07cfc01ad7a5fb777a0344851000e226b25ebb1307c29efc610d4e539310a7ee58cb56627c1b14c10f4699312e78d3b0c851336dfa03962d048f350f58747

Download Submit
\Windows\system\spoolsv.exe

Filesize
206KB

MD5
d0311b1d3e07ea8e48deb97ec8d8fa8c

SHA1
c3f471378c8b077ffaa0954288d8731520fe1650

SHA256
af11783d36efbfdac6d49498dff12c9b1ac560d0d00af71328d1bb2714a5d03f

SHA512
60d981046f932f888d88539a38d5ba74909da281b37128507ced01a059cd1ad444ac8c33827ec7eafc71675f107131466b90a418c4d9fa6b448aa0ecf73bc180

Download Submit
\Windows\system\svchost.exe

Filesize
206KB

MD5
50635a9032d42dbd3968a6e35f80d700

SHA1
891a4a7ebb81852272cd44875b20a6c7d7363898

SHA256
052339ed2283ad0cd913a90c955ee9a43840a3b14b0e4caef2f27334037ec5aa

SHA512
540eef65ae0506980b205025ff678b0d7ed9eaddbd5dc12bb6f0ad4ba83c8027af4872502fe15389d848ce5a9de928891cdf99925610fa5dc24669c185d3513d

Download Submit
memory/2044-58-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2044-26-0x0000000002780000-0x00000000027C0000-memory.dmp

Filesize
256KB

Download
memory/2064-55-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2492-56-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2492-0-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2492-12-0x0000000003250000-0x0000000003290000-memory.dmp

Filesize
256KB

Download
memory/2688-52-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2828-47-0x00000000003C0000-0x0000000000400000-memory.dmp

Filesize
256KB

Download
memory/2828-59-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2828-60-0x00000000003C0000-0x0000000000400000-memory.dmp

Filesize
256KB

Download
memory/2828-61-0x00000000003C0000-0x0000000000400000-memory.dmp

Filesize
256KB

Download