Analysis
- max time kernel
138s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20240419-en - resource tags
- submitted
08/05/2024, 01:04
General
- Target 81e18d35c83b04e7ee6288294cdfc7ef57af3c44d44788a21577e808b3a99a9d.exe
- Size 1.8MB
- Sample240508-bexrtaab3s
- SHA256 81e18d35c83b04e7ee6288294cdfc7ef57af3c44d44788a21577e808b3a99a9d
Malware Config
Signatures
- Detect ZGRat V1 2 IoCs
- Modifies WinLogon for persistence 2 TTPs 6 IoCs
- Process spawned unexpected child process 18 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- ZGRat
ZGRat is remote access trojan written in C#.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Adds Run key to start application 2 TTPs 12 IoCs
- Drops file in System32 directory 2 IoCs
- Drops file in Windows directory 7 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 18 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Modifies registry class 1 IoCs
- Runs ping.exe 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
- 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.
Processes
-
C:\Users\Admin\AppData\Local\Temp\81e18d35c83b04e7ee6288294cdfc7ef57af3c44d44788a21577e808b3a99a9d.exe"C:\Users\Admin\AppData\Local\Temp\81e18d35c83b04e7ee6288294cdfc7ef57af3c44d44788a21577e808b3a99a9d.exe"1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
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\4ftmtmjw\4ftmtmjw.cmdline"2⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES4C7A.tmp" "c:\Windows\System32\CSC9F6759A804B4EF1838C82ECB1D2815A.TMP"3⤵
-
-
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\9n6fQNof7y.bat"2⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\chcp.comchcp 650013⤵
-
-
C:\Windows\system32\PING.EXEping -n 10 localhost3⤵
- Runs ping.exe
-
-
C:\Windows\ImmersiveControlPanel\backgroundTaskHost.exe"C:\Windows\ImmersiveControlPanel\backgroundTaskHost.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
-
-
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "lsassl" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\lsass.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\lsass.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "lsassl" /sc MINUTE /mo 11 /tr "'C:\Recovery\WindowsRE\lsass.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "wininitw" /sc MINUTE /mo 13 /tr "'C:\Windows\apppatch\ja-JP\wininit.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Windows\apppatch\ja-JP\wininit.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "wininitw" /sc MINUTE /mo 6 /tr "'C:\Windows\apppatch\ja-JP\wininit.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "explorere" /sc MINUTE /mo 8 /tr "'C:\Windows\Prefetch\explorer.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Windows\Prefetch\explorer.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "explorere" /sc MINUTE /mo 14 /tr "'C:\Windows\Prefetch\explorer.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 5 /tr "'C:\Windows\ImmersiveControlPanel\backgroundTaskHost.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Windows\ImmersiveControlPanel\backgroundTaskHost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 13 /tr "'C:\Windows\ImmersiveControlPanel\backgroundTaskHost.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 5 /tr "'C:\Windows\Temp\MsEdgeCrashpad\sppsvc.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Windows\Temp\MsEdgeCrashpad\sppsvc.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 13 /tr "'C:\Windows\Temp\MsEdgeCrashpad\sppsvc.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "81e18d35c83b04e7ee6288294cdfc7ef57af3c44d44788a21577e808b3a99a9d8" /sc MINUTE /mo 14 /tr "'C:\Users\Admin\AppData\Local\Temp\81e18d35c83b04e7ee6288294cdfc7ef57af3c44d44788a21577e808b3a99a9d.exe'" /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "81e18d35c83b04e7ee6288294cdfc7ef57af3c44d44788a21577e808b3a99a9d" /sc ONLOGON /tr "'C:\Users\Admin\AppData\Local\Temp\81e18d35c83b04e7ee6288294cdfc7ef57af3c44d44788a21577e808b3a99a9d.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
-
C:\Windows\system32\schtasks.exeschtasks.exe /create /tn "81e18d35c83b04e7ee6288294cdfc7ef57af3c44d44788a21577e808b3a99a9d8" /sc MINUTE /mo 8 /tr "'C:\Users\Admin\AppData\Local\Temp\81e18d35c83b04e7ee6288294cdfc7ef57af3c44d44788a21577e808b3a99a9d.exe'" /rl HIGHEST /f1⤵
- Process spawned unexpected child process
- Creates scheduled task(s)
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Scheduled Task/Job
1Replay Monitor
Loading Replay Monitor...
Downloads
lsass.exe
9n6fQNof7y.bat
RES4C7A.tmp
4ftmtmjw.0.cs
4ftmtmjw.cmdline
CSC9F6759A804B4EF1838C82ECB1D2815A.TMP
memory/4536-14-0x000000001B520000-0x000000001B538000-memory.dmp
memory/4536-29-0x00007FFC753B0000-0x00007FFC75E71000-memory.dmp
memory/4536-10-0x000000001B500000-0x000000001B51C000-memory.dmp
memory/4536-11-0x00007FFC753B0000-0x00007FFC75E71000-memory.dmp
memory/4536-0-0x00007FFC753B3000-0x00007FFC753B5000-memory.dmp
memory/4536-12-0x000000001B7B0000-0x000000001B800000-memory.dmp
memory/4536-16-0x000000001B3C0000-0x000000001B3CC000-memory.dmp
memory/4536-17-0x00007FFC753B0000-0x00007FFC75E71000-memory.dmp
memory/4536-7-0x00007FFC753B0000-0x00007FFC75E71000-memory.dmp
memory/4536-8-0x00007FFC753B0000-0x00007FFC75E71000-memory.dmp
memory/4536-33-0x00007FFC753B0000-0x00007FFC75E71000-memory.dmp
memory/4536-6-0x0000000002840000-0x000000000284E000-memory.dmp
memory/4536-4-0x00007FFC753B0000-0x00007FFC75E71000-memory.dmp
memory/4536-3-0x00007FFC753B0000-0x00007FFC75E71000-memory.dmp
memory/4536-2-0x00007FFC753B0000-0x00007FFC75E71000-memory.dmp
memory/4536-49-0x00007FFC753B0000-0x00007FFC75E71000-memory.dmp
memory/4536-1-0x00000000005E0000-0x00000000007BA000-memory.dmp