Analysis

  • max time kernel
    141s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-09-2024 18:16

General

  • Target

    DOC- 1000290099433.vbe

  • Size

    11KB

  • MD5

    1ba91d56988897f8677cc18f54ac7e13

  • SHA1

    1a51f7b8534c912b18053ac2371907f095128a93

  • SHA256

    7576b26f5b40500a27c4279db479d482fb453e2dbc24d6b8754a07720c19055f

  • SHA512

    192c23958cd6e863ed205e4bbcddfa2915f197e9f9ca8e1cd66d4b7bcb834794c0012456789aef826622ab63cd589336b187c48f422ffca0b0a1094b59967f2f

  • SSDEEP

    192:l7TZ1ZSTlbLJya3RGALtUtNG7YkGEY9CNsRXX1ZAkt0pdzea1iydDcgLK:trITlbz3L5UtNGWEYCNsRXX1tedzL1iJ

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Blocklisted process makes network request 1 IoCs
  • Checks computer location settings 2 TTPs 1 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
  • Script User-Agent 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 19 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\DOC- 1000290099433.vbe"
    1⤵
    • Blocklisted process makes network request
    PID:3228
  • C:\Windows\System32\WScript.exe
    C:\Windows\System32\WScript.exe "C:\Users\Admin\AppData\Roaming\CeKsDwHNOyLUtGz.vbs"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2128
    • 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:540
      • 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:424
      • C:\Windows\system32\wermgr.exe
        "C:\Windows\system32\wermgr.exe" "-outproc" "0" "540" "2720" "2648" "2724" "0" "0" "2728" "0" "0" "0" "0" "0"
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        PID:4496
    • 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:3948
      • C:\Windows\system32\wermgr.exe
        "C:\Windows\system32\wermgr.exe" "-outproc" "0" "3948" "2680" "2612" "2684" "0" "0" "2688" "0" "0" "0" "0" "0"
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        PID:4548
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -nohome
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2460
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2460 CREDAT:17410 /prefetch:2
      2⤵
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:2304

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

    Filesize

    471B

    MD5

    ed05e58945ed7a2c9b1cdfc86642b6ed

    SHA1

    57c72c87f05d91b39f235af6688c13c8d9749c67

    SHA256

    c4e101f22a067b19a4629a48e893f9cd842b9a709a979208c9c5bb06724124ab

    SHA512

    853107d0ed6191d3a79e2e31d2b41873ccc67ac8bddaeb4ba902cc27342a5bbb127ed98828fa499e1f898d6304da2a05b93457490873f44b5987df780801ef8a

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

    Filesize

    404B

    MD5

    7fd791ec22712fb44b387839a4920f3e

    SHA1

    adbe439bb2111d88b0aa38e5b6cc5528d6315256

    SHA256

    d3eac5669036dcd1e96cf8ae7075eaca9d1e99827df4d4dbd17fdb7c0e9e17f7

    SHA512

    745c16ca26004489ac0f0e25ce728bbb902bbca58db14f750f6c2f8cc698736555322a12c9ba84d13e5008565ea5001c55ed0da739616c160da10fe7f8d5379f

  • 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\4329235D\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\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

    Filesize

    2KB

    MD5

    2b30242fe3de4d9edb43c28f08031166

    SHA1

    3dec76d6059bc908c3c1afe3c6512bb9b2884466

    SHA256

    176626b849aae53dfff8e6577e14ce326ef446cb4ef95fc7aade9b6e2444345a

    SHA512

    9891c05741744099c40dd66f951e963fe762e3d241a43f338bc805df81727fc0728c0f257a229f7c5a79d713832cd933488eb6740cb17e29630a53b4753b4240

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jb4uievo.sqt.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

    Filesize

    2KB

    MD5

    5df9cc7a167a8711770e63f29cc69d16

    SHA1

    312cc26407eada041f5310a62fd73b99fd03a240

    SHA256

    ec8a7ee52bf19d91f02f739f67f186a17730ca0bedab940b0b5f75973375a6cf

    SHA512

    bb7298e112011387cd7f65bd048fecdeb71104963586b423daf271bdfa4809b9b9f113680b9ce177f6139b63e19b805edd827d026cee9a219e442f00d50ad235

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

    Filesize

    6KB

    MD5

    170977dda5e7bb1bafb4139ffe111992

    SHA1

    4b9dc301a4f93977a1aa7234593d8f252a17e162

    SHA256

    4fb5267c46f09ce89175eeddde0340e93b35892449c47f00430fd82354e04ad4

    SHA512

    214df61ee13a0977f768d08bbe6600260bd99af2a1bf3269cace57f942e8d149359f2cf097888cbcd6c45fd9065b293cdf62aa969756e470b092b25730186681

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

    Filesize

    6KB

    MD5

    d7b5893952fc609b3f0d7c22b067fa40

    SHA1

    102c7293803456d2b71b20f809e64efdbf873c8b

    SHA256

    3ccaff5fd4da096f3d9c454dc4c5cdbd077c1bb5d1468a41609629d100a9d697

    SHA512

    25487c26ebc11ea5d7ac5bdbd887c361172db5afcffb30797814682399cf4f06a90934c51b4501dba84fc5f06dc57e6b0a9d51ead970e14dbc7a5caaaf268cb0

  • memory/424-36-0x00000000011C0000-0x0000000001200000-memory.dmp

    Filesize

    256KB

  • memory/424-52-0x0000000005C70000-0x0000000006214000-memory.dmp

    Filesize

    5.6MB

  • memory/424-56-0x0000000005830000-0x0000000005896000-memory.dmp

    Filesize

    408KB

  • memory/424-57-0x0000000006C40000-0x0000000006C90000-memory.dmp

    Filesize

    320KB

  • memory/424-58-0x0000000006D30000-0x0000000006DC2000-memory.dmp

    Filesize

    584KB

  • memory/424-59-0x0000000006CB0000-0x0000000006CBA000-memory.dmp

    Filesize

    40KB

  • memory/540-35-0x0000029705EA0000-0x0000029705EAA000-memory.dmp

    Filesize

    40KB

  • memory/540-34-0x0000029705D10000-0x0000029705D1A000-memory.dmp

    Filesize

    40KB

  • memory/540-15-0x00000297204A0000-0x0000029720516000-memory.dmp

    Filesize

    472KB

  • memory/540-14-0x00000297203D0000-0x0000029720414000-memory.dmp

    Filesize

    272KB

  • memory/540-4-0x0000029705840000-0x0000029705862000-memory.dmp

    Filesize

    136KB