Analysis

  • max time kernel
    150s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    24-09-2023 13:54

General

  • Target

    NO#CU-92504 Xls.exe

  • Size

    1.1MB

  • MD5

    59d184058f8e0a314db11d6f07f600fd

  • SHA1

    5e4b55295fd2b4cc5965fa1e8b322260c5d2a2b6

  • SHA256

    65df886edbea1a5bc833dba4e8e5126ad6326fa44f49e146a9c4b8b34fe75333

  • SHA512

    94adda18b842f927693d6831becbb10c249867c466cb3f2659dc1def9ae05024c7d8cf8a4567fc19f5a1c67495a7994010e1e3e3b3f7784f55f8f7916e190d8c

  • SSDEEP

    24576:mZRToVSu+nsc24YQeP18a5v8UKyd0c7u3yd2OluON4fA9uC:mZRToAu+ns082evFbdLu3yd2OluON4ff

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.lucd.shop
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    @lucd.shop

Signatures

  • HawkEye

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

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • NirSoft MailPassView 9 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 9 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 13 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 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.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

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

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 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\NO#CU-92504 Xls.exe
    "C:\Users\Admin\AppData\Local\Temp\NO#CU-92504 Xls.exe"
    1⤵
    • Looks for VirtualBox Guest Additions in registry
    • Looks for VMWare Tools registry key
    • Checks BIOS information in registry
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2244
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pbFphueKZdI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9C30.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2524
    • C:\Users\Admin\AppData\Local\Temp\NO#CU-92504 Xls.exe
      "{path}"
      2⤵
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2552
      • 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
        PID:2868
      • 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⤵
          PID:2416

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      344B

      MD5

      5a05a9202576a3a1369cb01137958ad4

      SHA1

      dc2f0d7e4d6e703a61b74ba1610413785d351418

      SHA256

      d68b76cc9a11d44795f38297825cb7da318d631249223750d45d486e72692f50

      SHA512

      9be84f3ee78dbbb8aec0f4ede1f6d77e47cfe267d78abe7d967bb590475ac029d767d24d3e568e0d1dc9f64618af47f7749b8de3d1aee4543ee9ece1c21a958c

    • C:\Users\Admin\AppData\Local\Temp\Cab12.tmp

      Filesize

      61KB

      MD5

      f3441b8572aae8801c04f3060b550443

      SHA1

      4ef0a35436125d6821831ef36c28ffaf196cda15

      SHA256

      6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

      SHA512

      5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

    • C:\Users\Admin\AppData\Local\Temp\Tar295.tmp

      Filesize

      163KB

      MD5

      9441737383d21192400eca82fda910ec

      SHA1

      725e0d606a4fc9ba44aa8ffde65bed15e65367e4

      SHA256

      bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5

      SHA512

      7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

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

      Filesize

      2B

      MD5

      f3b25701fe362ec84616a93a45ce9998

      SHA1

      d62636d8caec13f04e28442a0a6fa1afeb024bbb

      SHA256

      b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

      SHA512

      98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

    • C:\Users\Admin\AppData\Local\Temp\tmp9C30.tmp

      Filesize

      1KB

      MD5

      de367dee3bcbd57818686c35a11db802

      SHA1

      48bff87063472ebf696a5d55e9a1e4efc4c94195

      SHA256

      be8283e371c17225c7fe3c9498e4254eea1e5fce650cc921a5f7158d46b93c9e

      SHA512

      5e13b4047d791dafa44a81da05de72683bf58bb13e616749b4c117d176201d27377bf40e512e07470915490e14a42ef6fc21d4ceca3a35ccede114dccf089448

    • memory/2244-4-0x00000000741D0000-0x00000000748BE000-memory.dmp

      Filesize

      6.9MB

    • memory/2244-6-0x0000000005E90000-0x0000000005F58000-memory.dmp

      Filesize

      800KB

    • memory/2244-7-0x0000000004EF0000-0x0000000004F78000-memory.dmp

      Filesize

      544KB

    • memory/2244-5-0x0000000004F90000-0x0000000004FD0000-memory.dmp

      Filesize

      256KB

    • memory/2244-1-0x00000000741D0000-0x00000000748BE000-memory.dmp

      Filesize

      6.9MB

    • memory/2244-3-0x00000000005A0000-0x00000000005AC000-memory.dmp

      Filesize

      48KB

    • memory/2244-2-0x0000000004F90000-0x0000000004FD0000-memory.dmp

      Filesize

      256KB

    • memory/2244-0-0x0000000000A90000-0x0000000000BB8000-memory.dmp

      Filesize

      1.2MB

    • memory/2244-24-0x00000000741D0000-0x00000000748BE000-memory.dmp

      Filesize

      6.9MB

    • memory/2416-48-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/2416-44-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/2416-43-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/2416-41-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/2552-25-0x00000000741D0000-0x00000000748BE000-memory.dmp

      Filesize

      6.9MB

    • memory/2552-37-0x00000000741D0000-0x00000000748BE000-memory.dmp

      Filesize

      6.9MB

    • memory/2552-31-0x0000000000560000-0x0000000000568000-memory.dmp

      Filesize

      32KB

    • memory/2552-11-0x0000000000400000-0x0000000000488000-memory.dmp

      Filesize

      544KB

    • memory/2552-13-0x0000000000400000-0x0000000000488000-memory.dmp

      Filesize

      544KB

    • memory/2552-26-0x0000000004FC0000-0x0000000005000000-memory.dmp

      Filesize

      256KB

    • memory/2552-34-0x0000000004FC0000-0x0000000005000000-memory.dmp

      Filesize

      256KB

    • memory/2552-16-0x0000000000400000-0x0000000000488000-memory.dmp

      Filesize

      544KB

    • memory/2552-38-0x0000000004FC0000-0x0000000005000000-memory.dmp

      Filesize

      256KB

    • memory/2552-14-0x0000000000400000-0x0000000000488000-memory.dmp

      Filesize

      544KB

    • memory/2552-23-0x0000000000400000-0x0000000000488000-memory.dmp

      Filesize

      544KB

    • memory/2552-21-0x0000000000400000-0x0000000000488000-memory.dmp

      Filesize

      544KB

    • memory/2552-19-0x0000000000400000-0x0000000000488000-memory.dmp

      Filesize

      544KB

    • memory/2552-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2868-36-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2868-40-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2868-35-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2868-32-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB