Analysis

  • max time kernel
    310s
  • max time network
    320s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    18/03/2025, 04:45

General

  • Target
    azkzkzz.exe
  • Size 134.3MB
  • Sample250318-fdlelsvtey
  • SHA256 3357e2751c152a44e9ec41d08205d70f9fc185d59ec0bf30b2e5a1009c917046
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Epsilon Stealer

    Information stealer.

  • Epsilon family
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Looks up external IP address via web service 2 IoCs

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

  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

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

  • 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.

  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\azkzkzz.exe
    "C:\Users\Admin\AppData\Local\Temp\azkzkzz.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2224
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /d /s /c "wmic CsProduct Get UUID"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2692
      • C:\Windows\System32\Wbem\WMIC.exe
        wmic CsProduct Get UUID
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2840
    • C:\Users\Admin\AppData\Local\Temp\azkzkzz.exe
      "C:\Users\Admin\AppData\Local\Temp\azkzkzz.exe" --type=gpu-process --field-trial-handle=1088,3025942571488628876,6882250171852233893,131072 --disable-features=SpareRendererForSitePerProcess,WinRetrieveSuggestionsOnlyOnDemand --user-data-dir="C:\Users\Admin\AppData\Roaming\azkzkzz" --gpu-preferences=UAAAAAAAAADgAAAIAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1108 /prefetch:2
      2⤵
        PID:876
      • C:\Users\Admin\AppData\Local\Temp\azkzkzz.exe
        "C:\Users\Admin\AppData\Local\Temp\azkzkzz.exe" --type=gpu-process --field-trial-handle=1088,3025942571488628876,6882250171852233893,131072 --disable-features=SpareRendererForSitePerProcess,WinRetrieveSuggestionsOnlyOnDemand --user-data-dir="C:\Users\Admin\AppData\Roaming\azkzkzz" --gpu-preferences=UAAAAAAAAADgAAAIAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1336 /prefetch:2
        2⤵
          PID:2444
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /d /s /c "C:\Windows\system32\reg.exe QUERY "HKCU\SOFTWARE\Martin Prikryl\WinSCP 2\Sessions""
          2⤵
            PID:1104
            • C:\Windows\system32\reg.exe
              C:\Windows\system32\reg.exe QUERY "HKCU\SOFTWARE\Martin Prikryl\WinSCP 2\Sessions"
              3⤵
                PID:2416
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /d /s /c "C:\Windows\system32\reg.exe QUERY "HKCU\Software\Valve\Steam" /v SteamPath"
              2⤵
                PID:772
                • C:\Windows\system32\reg.exe
                  C:\Windows\system32\reg.exe QUERY "HKCU\Software\Valve\Steam" /v SteamPath
                  3⤵
                    PID:2376
                • C:\Windows\system32\cmd.exe
                  C:\Windows\system32\cmd.exe /d /s /c "tasklist"
                  2⤵
                    PID:2032
                    • C:\Windows\system32\tasklist.exe
                      tasklist
                      3⤵
                      • Enumerates processes with tasklist
                      • Suspicious use of AdjustPrivilegeToken
                      PID:1316
                  • C:\Windows\system32\cmd.exe
                    C:\Windows\system32\cmd.exe /d /s /c "wmic /Node:localhost /Namespace:\\root\SecurityCenter2 Path AntiVirusProduct Get displayName /Format:List"
                    2⤵
                      PID:2752
                      • C:\Windows\System32\Wbem\WMIC.exe
                        wmic /Node:localhost /Namespace:\\root\SecurityCenter2 Path AntiVirusProduct Get displayName /Format:List
                        3⤵
                        • Suspicious use of AdjustPrivilegeToken
                        PID:980
                    • C:\Windows\system32\cmd.exe
                      C:\Windows\system32\cmd.exe /d /s /c "wmic path win32_VideoController get name"
                      2⤵
                        PID:956
                        • C:\Windows\System32\Wbem\WMIC.exe
                          wmic path win32_VideoController get name
                          3⤵
                          • Detects videocard installed
                          PID:912
                      • C:\Windows\system32\cmd.exe
                        C:\Windows\system32\cmd.exe /d /s /c "cmd /c chcp 65001>nul && netsh wlan show profiles"
                        2⤵
                        • System Network Configuration Discovery: Wi-Fi Discovery
                        PID:3016
                        • C:\Windows\system32\cmd.exe
                          cmd /c chcp 65001
                          3⤵
                            PID:1492
                            • C:\Windows\system32\chcp.com
                              chcp 65001
                              4⤵
                                PID:1872
                            • C:\Windows\system32\netsh.exe
                              netsh wlan show profiles
                              3⤵
                              • Event Triggered Execution: Netsh Helper DLL
                              • System Network Configuration Discovery: Wi-Fi Discovery
                              PID:1772
                          • C:\Users\Admin\AppData\Local\Temp\azkzkzz.exe
                            "C:\Users\Admin\AppData\Local\Temp\azkzkzz.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1088,3025942571488628876,6882250171852233893,131072 --disable-features=SpareRendererForSitePerProcess,WinRetrieveSuggestionsOnlyOnDemand --lang=en-US --service-sandbox-type=none --user-data-dir="C:\Users\Admin\AppData\Roaming\azkzkzz" --mojo-platform-channel-handle=1568 /prefetch:8
                            2⤵
                            • Suspicious behavior: EnumeratesProcesses
                            PID:296

                        Network

                              MITRE ATT&CK Enterprise v15

                              Replay Monitor

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                              Downloads

                              All Credit Cards.txt

                              • Path C:\Users\Admin\AppData\Local\Temp\epsilon-Admin\Credit Cards\All Credit Cards.txt
                              • Size 231B
                              • SHA256 753b99d2b4e8c58bfd10995d0c2c19255fe9c8f53703bb27d1b6f76f1f4e83cc
                              • MD5 SHA1 SHA512

                              1500431d-ad69-4335-a094-3c5ae29ce3bc.tmp.node

                              • Path \Users\Admin\AppData\Local\Temp\1500431d-ad69-4335-a094-3c5ae29ce3bc.tmp.node
                              • Size 652KB
                              • SHA256 60932f76ed62a1ab950663dda8ba07ca47e2ba6b7c2caf29884c42e0901ce8c8
                              • MD5 SHA1 SHA512 SSDEEP

                              a9041b9d-5f6a-4606-aea9-ee2ae2ff1328.tmp.node

                              • Path \Users\Admin\AppData\Local\Temp\a9041b9d-5f6a-4606-aea9-ee2ae2ff1328.tmp.node
                              • Size 2.7MB
                              • SHA256 70bcf19069421a1ebb01f7adc10cca544c8960a4575bd37f80e79762b9b9be81
                              • MD5 SHA1 SHA512 SSDEEP

                              memory/876-5-0x0000000000060000-0x0000000000061000-memory.dmp

                              memory/876-37-0x0000000076FF0000-0x0000000076FF1000-memory.dmp