Analysis

  • max time kernel
    137s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    05/03/2025, 03:44

General

  • Target

    javs.exe

  • Size

    645KB

  • MD5

    b7f4ecc258e5795b93cf4c8239d80cae

  • SHA1

    457b52c2e260527ec6a648cac7b5170125f8952a

  • SHA256

    f5f915bab2da6d58e9c07823cd89594f631425a041cd2e642b5f1a64ca23203e

  • SHA512

    94578f60c1d5b0ca637047a52df3109c1233f8a9a790640af245cef59c74b5f8a0eb988b917fbdb3f1822ac339cea2e3679db06e3babca8e3455ea7681120fc0

  • SSDEEP

    12288:upcJsqHRb0bgiB+/iVWRTPwbmA20i4o+nsltXS879jKVoMNug9Szi:upcJsobEg4vVWRjwbmAS47nsP79jioVr

Malware Config

Signatures

  • HawkEye

    HawkEye is a malware kit that has seen continuous development since at least 2013.

  • Hawkeye family
  • Detected Nirsoft tools 12 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 9 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 9 IoCs

    Password recovery tool for various web browsers

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\javs.exe
    "C:\Users\Admin\AppData\Local\Temp\javs.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:2372
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Update\Cpudll" /XML "C:\Users\Admin\AppData\Local\Temp\z506"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:644
    • C:\Users\Admin\AppData\Local\Temp\javs.exe
      "C:\Users\Admin\AppData\Local\Temp\javs.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2736
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
        3⤵
        • Accesses Microsoft Outlook accounts
        • System Location Discovery: System Language Discovery
        PID:1600
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
        C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:1628

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    71KB

    MD5

    83142242e97b8953c386f988aa694e4a

    SHA1

    833ed12fc15b356136dcdd27c61a50f59c5c7d50

    SHA256

    d72761e1a334a754ce8250e3af7ea4bf25301040929fd88cf9e50b4a9197d755

    SHA512

    bb6da177bd16d163f377d9b4c63f6d535804137887684c113cc2f643ceab4f34338c06b5a29213c23d375e95d22ef417eac928822dfb3688ce9e2de9d5242d10

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    344B

    MD5

    d062bd83d710d1479e4d8b19b7cdd27f

    SHA1

    39c87cf57d35ff4b4adace0ee926200791ead2cd

    SHA256

    12b74de896f3c755b690d45a8b16d003bad981a04b5bf54932f4306d8ac39976

    SHA512

    2352d79c03507ea9f811ba62f06a3d6ef1e83fb9444e483cc782ae9648e2a9c76e69e5cf3f9dd4c068f643c6615b0b88fed39a4644d96f3f5cd1713d3dfff529

  • C:\Users\Admin\AppData\Local\Temp\Tar833B.tmp

    Filesize

    183KB

    MD5

    109cab5505f5e065b63d01361467a83b

    SHA1

    4ed78955b9272a9ed689b51bf2bf4a86a25e53fc

    SHA256

    ea6b7f51e85835c09259d9475a7d246c3e764ad67c449673f9dc97172c351673

    SHA512

    753a6da5d6889dd52f40208e37f2b8c185805ef81148682b269fff5aa84a46d710fe0ebfe05bce625da2e801e1c26745998a41266fa36bf47bc088a224d730cc

  • C:\Users\Admin\AppData\Local\Temp\holderwb.txt

    Filesize

    2B

    MD5

    f3b25701fe362ec84616a93a45ce9998

    SHA1

    d62636d8caec13f04e28442a0a6fa1afeb024bbb

    SHA256

    b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

    SHA512

    98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

  • C:\Users\Admin\AppData\Local\Temp\z506

    Filesize

    1KB

    MD5

    ce5b790b9de1dfa13ae05c966c042def

    SHA1

    2661869e863de8aface9a1d0ed7abdaa93f1118d

    SHA256

    52990325e75493b51852cb2783f958675dc95d77a7a3e4f1d49d44314e6e88c5

    SHA512

    3a715d02b36529da9a9ba477cfaced2619219fb2f929ae007c35b73084c0e4f5776decbbf0787d4cb0b55848a0e9cc3b00acdb74d2241322d43d168dc05347da

  • memory/1600-108-0x0000000000420000-0x0000000000487000-memory.dmp

    Filesize

    412KB

  • memory/1600-104-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1600-109-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1600-103-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1628-117-0x0000000000460000-0x00000000005E1000-memory.dmp

    Filesize

    1.5MB

  • memory/1628-118-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/1628-111-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/1628-110-0x0000000000400000-0x0000000000458000-memory.dmp

    Filesize

    352KB

  • memory/2372-71-0x0000000074B80000-0x000000007512B000-memory.dmp

    Filesize

    5.7MB

  • memory/2372-8-0x0000000074B80000-0x000000007512B000-memory.dmp

    Filesize

    5.7MB

  • memory/2372-9-0x0000000074B80000-0x000000007512B000-memory.dmp

    Filesize

    5.7MB

  • memory/2372-97-0x0000000074B80000-0x000000007512B000-memory.dmp

    Filesize

    5.7MB

  • memory/2372-0-0x0000000074B81000-0x0000000074B82000-memory.dmp

    Filesize

    4KB

  • memory/2736-77-0x0000000000070000-0x00000000000F4000-memory.dmp

    Filesize

    528KB

  • memory/2736-84-0x0000000000070000-0x00000000000F4000-memory.dmp

    Filesize

    528KB

  • memory/2736-82-0x0000000000070000-0x00000000000F4000-memory.dmp

    Filesize

    528KB

  • memory/2736-85-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2736-89-0x0000000000070000-0x00000000000F4000-memory.dmp

    Filesize

    528KB

  • memory/2736-105-0x0000000074B80000-0x000000007512B000-memory.dmp

    Filesize

    5.7MB

  • memory/2736-106-0x0000000074B80000-0x000000007512B000-memory.dmp

    Filesize

    5.7MB

  • memory/2736-107-0x0000000074B80000-0x000000007512B000-memory.dmp

    Filesize

    5.7MB

  • memory/2736-79-0x0000000000070000-0x00000000000F4000-memory.dmp

    Filesize

    528KB

  • memory/2736-98-0x0000000074B80000-0x000000007512B000-memory.dmp

    Filesize

    5.7MB

  • memory/2736-99-0x0000000074B80000-0x000000007512B000-memory.dmp

    Filesize

    5.7MB

  • memory/2736-100-0x0000000074B80000-0x000000007512B000-memory.dmp

    Filesize

    5.7MB

  • memory/2736-93-0x0000000000070000-0x00000000000F4000-memory.dmp

    Filesize

    528KB

  • memory/2736-96-0x0000000000070000-0x00000000000F4000-memory.dmp

    Filesize

    528KB

  • memory/2736-75-0x0000000000070000-0x00000000000F4000-memory.dmp

    Filesize

    528KB