dcrat | 4c04379fe5ff8e88b7cfd025d5eeb3e5f82a69fd100e16154f726a39c065c829

Analysis

max time kernel
148s
max time network
153s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
15/02/2025, 16:40

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General

Target

2891a1770d5724146e5c2b436b990f66.exe
Size

2.3MB
MD5

2891a1770d5724146e5c2b436b990f66
SHA1

db1a33568f79cb33363b19ef174491a16832fff4
SHA256

4c04379fe5ff8e88b7cfd025d5eeb3e5f82a69fd100e16154f726a39c065c829
SHA512

9a83deeee92ef2f03ff9b003ed64cedf1c44326cee1d3ef5ee019eaef63ce3af709c46bf551b73a0a81860ccb8daf5e6fc98755014c91bf8146131ffe350691e
SSDEEP

24576:2TbBv5rUyXVkW04UlpbayL/VxDqddNa9HGqDK0q8xGUxTW3TUFJcGqfc6Nl9WnXQ:IBJkz6SxGUBWZNfRl9WnXE5

Score

10^/10

dcrat discovery infostealer persistence rat

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat
Dcrat family
dcrat

Modifies WinLogon for persistence 2 TTPs 6 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Public\\Libraries\\winlogon.exe\""	hyperServerWebreview.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Public\\Libraries\\winlogon.exe\", \"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\smss.exe\""	hyperServerWebreview.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Public\\Libraries\\winlogon.exe\", \"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\smss.exe\", \"C:\\Windows\\system\\sppsvc.exe\""	hyperServerWebreview.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Public\\Libraries\\winlogon.exe\", \"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\smss.exe\", \"C:\\Windows\\system\\sppsvc.exe\", \"C:\\Program Files (x86)\\Microsoft SQL Server Compact Edition\\v3.5\\Desktop\\dllhost.exe\""	hyperServerWebreview.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Public\\Libraries\\winlogon.exe\", \"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\smss.exe\", \"C:\\Windows\\system\\sppsvc.exe\", \"C:\\Program Files (x86)\\Microsoft SQL Server Compact Edition\\v3.5\\Desktop\\dllhost.exe\", \"C:\\AgentRef\\lsass.exe\""	hyperServerWebreview.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\Users\\Public\\Libraries\\winlogon.exe\", \"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\smss.exe\", \"C:\\Windows\\system\\sppsvc.exe\", \"C:\\Program Files (x86)\\Microsoft SQL Server Compact Edition\\v3.5\\Desktop\\dllhost.exe\", \"C:\\AgentRef\\lsass.exe\", \"C:\\AgentRef\\hyperServerWebreview.exe\""	hyperServerWebreview.exe

Process spawned unexpected child process 18 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1268	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1676	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1720	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	944	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2936	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1564	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2864	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	768	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2336	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1756	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3016	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2120	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2492	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2232	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2196	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2096	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1348	2480	schtasks.exe	34
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1864	2480	schtasks.exe	34

Executes dropped EXE 2 IoCs

pid	Process
2744	hyperServerWebreview.exe
1572	hyperServerWebreview.exe

Loads dropped DLL 2 IoCs

pid	Process
2768	cmd.exe
2768	cmd.exe

Adds Run key to start application 2 TTPs 12 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\hyperServerWebreview = "\"C:\\AgentRef\\hyperServerWebreview.exe\""	hyperServerWebreview.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Users\\Public\\Libraries\\winlogon.exe\""	hyperServerWebreview.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\smss = "\"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\smss.exe\""	hyperServerWebreview.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\sppsvc = "\"C:\\Windows\\system\\sppsvc.exe\""	hyperServerWebreview.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\lsass = "\"C:\\AgentRef\\lsass.exe\""	hyperServerWebreview.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\hyperServerWebreview = "\"C:\\AgentRef\\hyperServerWebreview.exe\""	hyperServerWebreview.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lsass = "\"C:\\AgentRef\\lsass.exe\""	hyperServerWebreview.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\winlogon = "\"C:\\Users\\Public\\Libraries\\winlogon.exe\""	hyperServerWebreview.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smss = "\"C:\\MSOCache\\All Users\\{90140000-0117-0409-0000-0000000FF1CE}-C\\Access.en-us\\smss.exe\""	hyperServerWebreview.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\sppsvc = "\"C:\\Windows\\system\\sppsvc.exe\""	hyperServerWebreview.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\Program Files (x86)\\Microsoft SQL Server Compact Edition\\v3.5\\Desktop\\dllhost.exe\""	hyperServerWebreview.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dllhost = "\"C:\\Program Files (x86)\\Microsoft SQL Server Compact Edition\\v3.5\\Desktop\\dllhost.exe\""	hyperServerWebreview.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ipinfo.io
5	ipinfo.io

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	\??\c:\Windows\System32\CSCDB745A99FF1B4AD8BF4EE2D5D953D632.TMP	csc.exe
File created	\??\c:\Windows\System32\hi5-9c.exe	csc.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\dllhost.exe	hyperServerWebreview.exe
File created	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\5940a34987c991	hyperServerWebreview.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system\sppsvc.exe	hyperServerWebreview.exe
File created	C:\Windows\system\0a1fd5f707cd16	hyperServerWebreview.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 3 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	2891a1770d5724146e5c2b436b990f66.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2916	PING.EXE

Modifies system certificate store 2 TTPs 2 IoCs

defense_evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8	hyperServerWebreview.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\CABD2A79A1076A31F21D253635CB039D4329A5E8\Blob = 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	hyperServerWebreview.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2916	PING.EXE

Scheduled Task/Job: Scheduled Task 1 TTPs 18 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1348	schtasks.exe
768	schtasks.exe
1720	schtasks.exe
1564	schtasks.exe
2120	schtasks.exe
2492	schtasks.exe
2196	schtasks.exe
1864	schtasks.exe
1268	schtasks.exe
2232	schtasks.exe
2096	schtasks.exe
1756	schtasks.exe
944	schtasks.exe
2936	schtasks.exe
2864	schtasks.exe
2336	schtasks.exe
3016	schtasks.exe
1676	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe
2744	hyperServerWebreview.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2744	hyperServerWebreview.exe
Token: SeDebugPrivilege	1572	hyperServerWebreview.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 2200	3056	2891a1770d5724146e5c2b436b990f66.exe	30
PID 3056 wrote to memory of 2200	3056	2891a1770d5724146e5c2b436b990f66.exe	30
PID 3056 wrote to memory of 2200	3056	2891a1770d5724146e5c2b436b990f66.exe	30
PID 3056 wrote to memory of 2200	3056	2891a1770d5724146e5c2b436b990f66.exe	30
PID 2200 wrote to memory of 2768	2200	WScript.exe	31
PID 2200 wrote to memory of 2768	2200	WScript.exe	31
PID 2200 wrote to memory of 2768	2200	WScript.exe	31
PID 2200 wrote to memory of 2768	2200	WScript.exe	31
PID 2768 wrote to memory of 2744	2768	cmd.exe	33
PID 2768 wrote to memory of 2744	2768	cmd.exe	33
PID 2768 wrote to memory of 2744	2768	cmd.exe	33
PID 2768 wrote to memory of 2744	2768	cmd.exe	33
PID 2744 wrote to memory of 388	2744	hyperServerWebreview.exe	38
PID 2744 wrote to memory of 388	2744	hyperServerWebreview.exe	38
PID 2744 wrote to memory of 388	2744	hyperServerWebreview.exe	38
PID 388 wrote to memory of 2524	388	csc.exe	40
PID 388 wrote to memory of 2524	388	csc.exe	40
PID 388 wrote to memory of 2524	388	csc.exe	40
PID 2744 wrote to memory of 2268	2744	hyperServerWebreview.exe	56
PID 2744 wrote to memory of 2268	2744	hyperServerWebreview.exe	56
PID 2744 wrote to memory of 2268	2744	hyperServerWebreview.exe	56
PID 2268 wrote to memory of 2112	2268	cmd.exe	58
PID 2268 wrote to memory of 2112	2268	cmd.exe	58
PID 2268 wrote to memory of 2112	2268	cmd.exe	58
PID 2268 wrote to memory of 2916	2268	cmd.exe	59
PID 2268 wrote to memory of 2916	2268	cmd.exe	59
PID 2268 wrote to memory of 2916	2268	cmd.exe	59
PID 2268 wrote to memory of 1572	2268	cmd.exe	60
PID 2268 wrote to memory of 1572	2268	cmd.exe	60
PID 2268 wrote to memory of 1572	2268	cmd.exe	60

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\2891a1770d5724146e5c2b436b990f66.exe
"C:\Users\Admin\AppData\Local\Temp\2891a1770d5724146e5c2b436b990f66.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\AgentRef\OkvCGDfU3ex3.vbe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2200
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\AgentRef\bnbVUJlvMujqmG.bat" "
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2768
  - - C:\AgentRef\hyperServerWebreview.exe
      "C:\AgentRef/hyperServerWebreview.exe"
      4⤵
      Modifies WinLogon for persistence
      Executes dropped EXE
      Adds Run key to start application
      Drops file in Program Files directory
      Drops file in Windows directory
      Modifies system certificate store
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2744
    - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
        
        "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\nntfldho\nntfldho.cmdline"
        5⤵
        Drops file in System32 directory
        Suspicious use of WriteProcessMemory
        
        PID:388
      - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
        
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES4328.tmp" "c:\Windows\System32\CSCDB745A99FF1B4AD8BF4EE2D5D953D632.TMP"
        6⤵
        
        PID:2524
    - - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\whfjDxqUJ9.bat"
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2268
      - C:\Windows\system32\chcp.com
        
        chcp 65001
        6⤵
        
        PID:2112
      - C:\Windows\system32\PING.EXE
        
        ping -n 10 localhost
        6⤵
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:2916
      - C:\AgentRef\hyperServerWebreview.exe
        
        "C:\AgentRef\hyperServerWebreview.exe"
        6⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:1572

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 14 /tr "'C:\Users\Public\Libraries\winlogon.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1268

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Users\Public\Libraries\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1676

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 10 /tr "'C:\Users\Public\Libraries\winlogon.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1720

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\{90140000-0117-0409-0000-0000000FF1CE}-C\Access.en-us\smss.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:944

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0117-0409-0000-0000000FF1CE}-C\Access.en-us\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2936

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "smsss" /sc MINUTE /mo 12 /tr "'C:\MSOCache\All Users\{90140000-0117-0409-0000-0000000FF1CE}-C\Access.en-us\smss.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1564

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 14 /tr "'C:\Windows\system\sppsvc.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2864

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Windows\system\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:768

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 8 /tr "'C:\Windows\system\sppsvc.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2336

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\dllhost.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1756

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:3016

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\dllhost.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2120

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 13 /tr "'C:\AgentRef\lsass.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2492

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\AgentRef\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2232

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 8 /tr "'C:\AgentRef\lsass.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2196

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "hyperServerWebreviewh" /sc MINUTE /mo 6 /tr "'C:\AgentRef\hyperServerWebreview.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2096

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "hyperServerWebreview" /sc ONLOGON /tr "'C:\AgentRef\hyperServerWebreview.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1348

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "hyperServerWebreviewh" /sc MINUTE /mo 10 /tr "'C:\AgentRef\hyperServerWebreview.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:1864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Subvert Trust Controls

T1553

Install Root Certificate

T1553.004

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\AgentRef\OkvCGDfU3ex3.vbe

Filesize
197B

MD5
fb2cbdc312e57c37b697fd0fbf537d35

SHA1
39234d3130e5192fd7b957105498ff2ea129ef30

SHA256
c5e9bc252b96bcb1c42066ea50f86ba57a5a900d07d467882ba7355d7bd776ec

SHA512
e46155fbe1443ad4e34d26e3644a4bd0afeafdbdc1127a881a6fd8055aa2ab3eef0b2cbb27147ad24642e3e789fa1954621ff913a2acd2cc50561a0951f3f0f2

Download Submit
C:\AgentRef\bnbVUJlvMujqmG.bat

Filesize
82B

MD5
ef88eab648293dff34d1c614f19e6ba8

SHA1
ab2b9b312478c87906dbf19d74ad6daac55ec3ed

SHA256
bf4bb20748552d481137a59ea3f2135b670dc52f934fe191f089c263d43ea75d

SHA512
c691650e243aa6ae81edcddba7f6667020191a8004f816ec29ba929fff6a2ba4e9f2a9a0f3d6296e0842fdbe01f59c53303bb5e6e8ff521327f0d790c2546e1b

Download Submit
C:\Users\Admin\AppData\Local\Temp\RES4328.tmp

Filesize
1KB

MD5
5fd4877ec235164c7757da91b2a32e03

SHA1
0756725b52b6305f3071b6f0b86d171abd9f03ea

SHA256
817ff1f2485a2f0e45c3191dcbb9503cd472b6470d1dcd58432bb156324e2301

SHA512
e020eb14db68ef104414e5e3f96db3057539126e6f9dd5d7202856246a38812509268485a842cef380f0d0169b781527a826719b2a27a88c6b4681489f348afd

Download Submit
C:\Users\Admin\AppData\Local\Temp\whfjDxqUJ9.bat

Filesize
164B

MD5
f59baa938145a4966d5f97194be44eae

SHA1
b56449ff297151019a7878f0f823de4f2adbac7e

SHA256
1b67068d4e06b623bd3745a9dafbc0f825fe0fa6284667dca30fdff4ebdd527e

SHA512
6da25392a470150f917b5b5e21cc0e397e1ba81648b705944befa4f1df72540c39778355b3c7e444006bf941814c4ed54d008099213f69f396d3588177af626e

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\nntfldho\nntfldho.0.cs

Filesize
370B

MD5
a30e74fde10bc0e8f5c735b41a747d2b

SHA1
a0bef71624d400598963d3e01baaf74758f2ade9

SHA256
4d02ea3236836dd3910c5885aeb54fe534e510bf4939863ae3b571e1b798d2f2

SHA512
6efa01fc47fc3b15f19ade21a76701971b32c8258c2976aba64324091ce8ddffd720a0f9d23bf8e2b4573828b8e127f358c3f77b4efbb965a8663c29e9ff8429

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\nntfldho\nntfldho.cmdline

Filesize
235B

MD5
a2317c9f0cab30dd7d59c591685eb2e9

SHA1
543baefda3c3ba4304182eca8947e9e089c16441

SHA256
146f859c5ea48be6a8b3c53f62500dafd18d260b968a97d4727c85160963e8a1

SHA512
0127ca1b00d60171bc9dca619ea8b80d7a9d190e741922f5c7ff9eed077233ac6a3d85392b1103679ab799d8ea5914d578261d003c83228ae127e2bba17daf6e

Download Submit
\??\c:\Windows\System32\CSCDB745A99FF1B4AD8BF4EE2D5D953D632.TMP

Filesize
1KB

MD5
60a1ebb8f840aad127346a607d80fc19

SHA1
c8b7e9ad601ac19ab90b3e36f811960e8badf354

SHA256
9d6a9d38b7a86cc88e551a0c1172a3fb387b1a5f928ac13993ec3387d39cc243

SHA512
44830cefb264bac520174b4b884312dd0393be33a193d4f0fee3cc3c14deb86ca39e43ef281232f9169fd204d19b22e8a7aad72fa448ca52d5cbc3ee1dbb18a4

Download Submit
\AgentRef\hyperServerWebreview.exe

Filesize
2.0MB

MD5
a8a6023702a2b0a6d26e89836a2db7c3

SHA1
2ef4e311df983ab8792cdacf88213f452a07db7c

SHA256
93e1b97ae8a204de7100236e263ac4641a132587d2538b9e8f17303628a13c25

SHA512
4779c50be20b714ef52273594d08b07884e8a0a631b11754ad485facc01423cac31bb449b18843454df7b37b9736766ecdbc06a88934be98f99311591c43a57f

Download Submit
memory/1572-59-0x0000000000340000-0x000000000053C000-memory.dmp

Filesize
2.0MB

Download
memory/2744-15-0x0000000000300000-0x000000000030E000-memory.dmp

Filesize
56KB

Download
memory/2744-27-0x0000000000580000-0x000000000058E000-memory.dmp

Filesize
56KB

Download
memory/2744-29-0x0000000000590000-0x0000000000598000-memory.dmp

Filesize
32KB

Download
memory/2744-25-0x0000000000570000-0x000000000057C000-memory.dmp

Filesize
48KB

Download
memory/2744-23-0x0000000000320000-0x000000000032C000-memory.dmp

Filesize
48KB

Download
memory/2744-21-0x0000000000310000-0x000000000031E000-memory.dmp

Filesize
56KB

Download
memory/2744-19-0x00000000004D0000-0x00000000004E8000-memory.dmp

Filesize
96KB

Download
memory/2744-17-0x00000000004B0000-0x00000000004CC000-memory.dmp

Filesize
112KB

Download
memory/2744-13-0x00000000009B0000-0x0000000000BAC000-memory.dmp

Filesize
2.0MB

Download