Analysis

  • max time kernel
    147s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/10/2024, 01:35

General

  • Target

    b9fdcdcc7221b4d0b59aed55f611ba2bd0d68fc4e882eeb479afaf4c6abbe717.vbs

  • Size

    24KB

  • MD5

    57a38ec7fd0987672546f26cd5182a14

  • SHA1

    44ea97d8f46a763572aa89d59306be3aa29c1b22

  • SHA256

    b9fdcdcc7221b4d0b59aed55f611ba2bd0d68fc4e882eeb479afaf4c6abbe717

  • SHA512

    2715e35768529206adee6416fba9ae11bd6c726f6e2189013d610373ebaf9cb153796ef15b7de59d6a539c97332958f39943354077181620e155153aa8c44fdc

  • SSDEEP

    192:eiJVpMIfAiyRfcUxNKwK04QKxL0LDZPAMulxMllh9kbLGmA5UQ7RHVpiqrgSVJNn:eiJQaQKxL+2uIngiq3tZW6kCfDcDSqDO

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Blocklisted process makes network request 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Looks up external IP address via web service 2 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Checks processor information in registry 2 TTPs 6 IoCs

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

  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Modifies Internet Explorer settings 1 TTPs 41 IoCs
  • Modifies registry class 1 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 23 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:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\b9fdcdcc7221b4d0b59aed55f611ba2bd0d68fc4e882eeb479afaf4c6abbe717.vbs"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:5040
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\ProgramData\output.vbe"
      2⤵
      • Blocklisted process makes network request
      PID:4376
  • C:\Windows\System32\WScript.exe
    C:\Windows\System32\WScript.exe "C:\Users\Admin\AppData\Roaming\TidgcioBlkpEhGQ.vbs"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5068
    • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe"
      2⤵
      • Drops file in System32 directory
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1924
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2924
      • C:\Windows\system32\wermgr.exe
        "C:\Windows\system32\wermgr.exe" "-outproc" "0" "1924" "2776" "2716" "2780" "0" "0" "2784" "0" "0" "0" "0" "0"
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        PID:4672
    • C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe"
      2⤵
      • Drops file in System32 directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3528
      • C:\Windows\system32\wermgr.exe
        "C:\Windows\system32\wermgr.exe" "-outproc" "0" "3528" "2688" "2616" "2692" "0" "0" "2696" "0" "0" "0" "0" "0"
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        PID:1088
  • C:\Program Files\Microsoft Office\Root\VFS\ProgramFilesCommonX64\Microsoft Shared\Office16\MSOXMLED.EXE
    "C:\Program Files\Microsoft Office\Root\VFS\ProgramFilesCommonX64\Microsoft Shared\Office16\MSOXMLED.EXE" /verb open "C:\Users\Admin\Desktop\SearchHide.xml"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3712
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\Desktop\SearchHide.xml
      2⤵
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3776
      • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3776 CREDAT:17410 /prefetch:2
        3⤵
        • System Location Discovery: System Language Discovery
        • Modifies Internet Explorer settings
        • Suspicious use of SetWindowsHookEx
        PID:3940

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\output.vbe

    Filesize

    11KB

    MD5

    7658ff7270f15c5849ee32164ea101e2

    SHA1

    fcd386015cbcb9c609d65af4400b13dd787edfac

    SHA256

    15579ee0b5e735c4f168fc21e8090b1040f3f9d026377d1363ee84d2ba07fe37

    SHA512

    5c2f110d97dc0a4678efc5c6c3a73fd3ba05b812df8b80b52336e1d6bc1016ab51e24427d3f61fe9d82dbf57ebf00a4fa8d8acc9809e518dac3b0e5154da8028

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

    Filesize

    3KB

    MD5

    9461a7cfb20ff5381df28f51b80c5ef1

    SHA1

    c86c53fca1dcbe307dafbefbb366abf52c9f5eca

    SHA256

    d4af1948337d0deb725f4f2b1fe1a9b60f4519841e28748b11bfd62ccd71e028

    SHA512

    da1e17f67dfebb004ba93d489be504fd7af6d62709ada2581ffa77880baecdaa0015b49d36333d18216d9dc6aad7b0ea2e5bd224d8d3f65ee9b66a05fc45e304

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\9MFSIIMR\suggestions[1].en-US

    Filesize

    17KB

    MD5

    5a34cb996293fde2cb7a4ac89587393a

    SHA1

    3c96c993500690d1a77873cd62bc639b3a10653f

    SHA256

    c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

    SHA512

    e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache

    Filesize

    53KB

    MD5

    a26df49623eff12a70a93f649776dab7

    SHA1

    efb53bd0df3ac34bd119adf8788127ad57e53803

    SHA256

    4ebde1c12625cb55034d47e5169f709b0bd02a8caa76b5b9854efad7f4710245

    SHA512

    e5f9b8645fb2a50763fcbffe877ca03e9cadf099fe2d510b74bfa9ff18d0a6563d11160e00f495eeefebde63450d0ade8d6b6a824e68bd8a59e1971dc842709c

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kzzvhsyy.wrh.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

    Filesize

    6KB

    MD5

    91f697702bdceb3905e4bbf0a2366af2

    SHA1

    8645bde3f468045bcef5900d342bf1d98df6d20f

    SHA256

    f1912df9ec77b4838ddd0fa2f96e2c1613f5ec02c44ffef8d9667ff61e3626b4

    SHA512

    b8dbaae30e806f3b059e04eecdb5882ba19d2e32c6aad2c1f65957387b22a0dd7ad35d536a6eb4167741683d3081d6973883a55d29fcdefbc6acd7fd3bb77a20

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

    Filesize

    6KB

    MD5

    cd73dcd06d723b116f649baec4c27cd1

    SHA1

    af421ea01f7004e24e46a68abe49f2fff5b65433

    SHA256

    26b1d1cc91240900a78bab20b644c12545aa0215fa6d2fbf6b7c470e065741ff

    SHA512

    95688dc5fad143b08fdd1478c72885f5f606374bfb6d032f59b6b69c3227a82751aedcbcf4918572a1f02a8cb82d1130a75f5c855daa4ccce757321daa87f3e4

  • C:\Users\Admin\AppData\Roaming\TidgcioBlkpEhGQ.vbs

    Filesize

    2KB

    MD5

    8f97f3187a64baf0426d3faf656cd010

    SHA1

    6798db641d79614ad78ec589e0ff9c32404b727c

    SHA256

    d4bf9aa7c70ec053878e7c6b47146e2f5769938c4d3311f400f91ea1880156ea

    SHA512

    ed69831fa60be68d790986841d0bd5430a58d993548af4eab49154de40e62bcd7e22e81e4a3fcb69d76aac0b74ca4634605e56d7110105a58f1dcf8012582dd7

  • memory/1924-27-0x00000258D1880000-0x00000258D18F6000-memory.dmp

    Filesize

    472KB

  • memory/1924-26-0x00000258CF1D0000-0x00000258CF214000-memory.dmp

    Filesize

    272KB

  • memory/1924-18-0x00000258B7000000-0x00000258B7022000-memory.dmp

    Filesize

    136KB

  • memory/1924-46-0x00000258CF1A0000-0x00000258CF1A8000-memory.dmp

    Filesize

    32KB

  • memory/1924-47-0x00000258CF1B0000-0x00000258CF1BC000-memory.dmp

    Filesize

    48KB

  • memory/2924-48-0x0000000001350000-0x0000000001390000-memory.dmp

    Filesize

    256KB

  • memory/2924-71-0x0000000006E50000-0x0000000006E5A000-memory.dmp

    Filesize

    40KB

  • memory/2924-70-0x0000000006EC0000-0x0000000006F52000-memory.dmp

    Filesize

    584KB

  • memory/2924-69-0x0000000006DD0000-0x0000000006E20000-memory.dmp

    Filesize

    320KB

  • memory/2924-68-0x00000000059A0000-0x0000000005A06000-memory.dmp

    Filesize

    408KB

  • memory/2924-52-0x0000000005E50000-0x00000000063F4000-memory.dmp

    Filesize

    5.6MB

  • memory/3712-25-0x00007FFC29530000-0x00007FFC29540000-memory.dmp

    Filesize

    64KB

  • memory/3712-10-0x00007FFC29530000-0x00007FFC29540000-memory.dmp

    Filesize

    64KB

  • memory/3712-8-0x00007FFC29530000-0x00007FFC29540000-memory.dmp

    Filesize

    64KB

  • memory/3712-9-0x00007FFC29530000-0x00007FFC29540000-memory.dmp

    Filesize

    64KB

  • memory/3712-11-0x00007FFC29530000-0x00007FFC29540000-memory.dmp

    Filesize

    64KB

  • memory/3712-22-0x00007FFC29530000-0x00007FFC29540000-memory.dmp

    Filesize

    64KB

  • memory/3712-24-0x00007FFC29530000-0x00007FFC29540000-memory.dmp

    Filesize

    64KB

  • memory/3712-23-0x00007FFC29530000-0x00007FFC29540000-memory.dmp

    Filesize

    64KB

  • memory/3712-7-0x00007FFC29530000-0x00007FFC29540000-memory.dmp

    Filesize

    64KB