Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-04-2024 08:55

General

  • Target

    30042024_0855_lnvoice_bill___(83737738837)388475.ps1

  • Size

    267KB

  • MD5

    a27a0d0efc218a34b3869de11abc6f96

  • SHA1

    c76826e0326325c3381e8f59b176077c2f717bba

  • SHA256

    ae0ef6f7368de8b504832aadf49b703a40c30aba33a9077d77cec13ff7bb2ab0

  • SHA512

    e79ec4ce989c0b54747d9d85dcef3f52021defe66a48c2ac57b76c6f1f6318a75b916e0fa575bb4304415e5cfc820356f378b164b818175c1b1d3ce8e644c9b8

  • SSDEEP

    6144:SGNQeKCEIqQWVUBFJHFet4UHjbpjDB7oHv+JUB93CsL9QIH/zT:SGNQeKCEIqQWVUBFJHFelD1DB7oHv+Jk

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 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\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\30042024_0855_lnvoice_bill___(83737738837)388475.ps1
    1⤵
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3924
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\ProgramData\Express\xx.vbs"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:4020
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" C:\ProgramData\Express\xx.bat
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1564
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\ProgramData\Express\xx.bat""
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3504
          • C:\Windows\system32\schtasks.exe
            schtasks.exe /create /tn Express /sc minute /mo 3 /tr "C:\ProgramData\Express\Cotrl.vbs"
            5⤵
            • Creates scheduled task(s)
            PID:4776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Express\xx.bat

    Filesize

    95B

    MD5

    43ff49fbde6f4391891cf2a46b406da4

    SHA1

    695b9eb511af67cab16d5cf108258947f864e2da

    SHA256

    5ad35cc29456c109608243d046951e541ee44aef379eea3a5304e6a17a1b806f

    SHA512

    ac9e4fb602412aedc65dd5ac312b7c61d4ed183d4e2150d98c4b5c485caafc3a42f3c26fdfc68c4a305e1a9ed40e9b63898f02932a3247019d2c66d822939364

  • C:\ProgramData\Express\xx.vbs

    Filesize

    775B

    MD5

    c840c0438f2fae0ddda74a43411a9b01

    SHA1

    786f5955d835d1d4c137ffed6a15fdfa6b5d5db0

    SHA256

    e262ddea8db55b52c2aee29444ef27b28f6a0f0da3e4c79ae823e8ad67ef1749

    SHA512

    142da2962e2a7897e1f96aa98d178fcc7f8729c76c090bf04b3a3a358cc75ac10933278fa78295eb649634471a31b16c399ebc417a3205dbc31583a2a3c9d78d

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

    Filesize

    3KB

    MD5

    223bd4ae02766ddc32e6145fd1a29301

    SHA1

    900cfd6526d7e33fb4039a1cc2790ea049bc2c5b

    SHA256

    1022ec2fed08ff473817fc53893e192a8e33e6a16f3d2c8cb6fd37f49c938e1e

    SHA512

    648cd3f8a89a18128d2b1bf960835e087a74cdbc783dbfcc712b3cb9e3a2e4f715e534ba2ef81d89af8f60d4882f6859373248c875ceb26ad0922e891f2e74cc

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    1KB

    MD5

    5161e9d6b9b677b7af6e5bb11a361b91

    SHA1

    9fe0a04c2bb86467b9aa584c78db4fc7eccfdd42

    SHA256

    addb0aa038e121d21d7b4bd4ba49316c05294a582cb430eb37ce3925324bd3d0

    SHA512

    95b4a85b4240145d35f1f14bc07ee87b597d484935599f898074be16a7bfcc6fdb36e31e5afedac1c83bdbcbf402c40a3573f2b3512ba521f3ad29fd503f7749

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fk1iuh42.ij3.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/3924-5-0x000001C5B0D80000-0x000001C5B0DA2000-memory.dmp

    Filesize

    136KB

  • memory/3924-10-0x00007FFD98820000-0x00007FFD992E1000-memory.dmp

    Filesize

    10.8MB

  • memory/3924-12-0x000001C5B0490000-0x000001C5B04A0000-memory.dmp

    Filesize

    64KB

  • memory/3924-11-0x000001C5B0490000-0x000001C5B04A0000-memory.dmp

    Filesize

    64KB

  • memory/3924-23-0x00007FFD98820000-0x00007FFD992E1000-memory.dmp

    Filesize

    10.8MB