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Resubmissions

29/10/2024, 18:10

241029-wscc9axhkn 10

09/10/2024, 10:24

241009-mfdacatdqb 10

Analysis

  • max time kernel
    140s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/10/2024, 10:24

General

  • Target

    Letter Of Intent.vbe

  • Size

    11KB

  • MD5

    59958a367c15cc55b0b42db533eb99a8

  • SHA1

    06d169da811d8d0abce9280ff7fd748f125e1aff

  • SHA256

    5a793830dc868d92331342fbca7bb5338b6014944a972960c97f7d9d3f3c66ae

  • SHA512

    bc7fbbb16f83492876f298f98160b264150ee995871f0e2d59c5c49d703bf2f21721ca1d49d293264be798ef0da2b5ebb4f423be5ddc788d34f1369db03e546e

  • SSDEEP

    192:kn3g3XXH2AYKtbXq1qFqpSJ7sWfqH2hmqaOdC8NhuOzWNpK:uw3XXH2aA1qFkiQWfq2mqLdCpxw

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 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 1 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
  • Script User-Agent 1 IoCs

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

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 10 IoCs
  • Suspicious use of SendNotifyMessage 9 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 16 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\Letter Of Intent.vbe"
    1⤵
    • Blocklisted process makes network request
    PID:4212
  • C:\Windows\System32\WScript.exe
    C:\Windows\System32\WScript.exe "C:\Users\Admin\AppData\Roaming\raeljTgEWGjaGRB.vbs"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:392
    • 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:4260
      • 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:372
      • C:\Windows\system32\wermgr.exe
        "C:\Windows\system32\wermgr.exe" "-outproc" "0" "4260" "2752" "2692" "2756" "0" "0" "2760" "0" "0" "0" "0" "0"
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        PID:3052
    • 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:4300
      • C:\Windows\system32\wermgr.exe
        "C:\Windows\system32\wermgr.exe" "-outproc" "0" "4300" "2688" "2620" "2692" "0" "0" "2696" "0" "0" "0" "0" "0"
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        PID:856
  • C:\Program Files\VideoLAN\VLC\vlc.exe
    "C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\SkipSelect.ADT"
    1⤵
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    PID:3308

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

    3f01549ee3e4c18244797530b588dad9

    SHA1

    3e87863fc06995fe4b741357c68931221d6cc0b9

    SHA256

    36b51e575810b6af6fc5e778ce0f228bc7797cd3224839b00829ca166fa13f9a

    SHA512

    73843215228865a4186ac3709bf2896f0f68da0ba3601cc20226203dd429a2ad9817b904a45f6b0456b8be68deebf3b011742a923ce4a77c0c6f3a155522ab50

  • 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_gvpnax0v.5bb.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

    58965165e5c082bd47276cdd476ee21f

    SHA1

    e461261d00a67915c84ad8c80ffd2d23b25266b1

    SHA256

    cd0372f3a2bb08e7f731423fe644ccfbd7ea615e5a7255048f576a99e1c1d45f

    SHA512

    648aa61962803c6d0cb2410c932f3edb2250b131771d00e361ecc0f4025590a43454313b250ecf7a12beef75de19e855b1d30058fecb9d3dfa1227bac4793047

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

    Filesize

    6KB

    MD5

    8a865f1b4d5eec9c3a1faa43f3edf5f5

    SHA1

    c510791c456f1f82112cc777652eaa8379413fa8

    SHA256

    5307c399e7c127a1c49375c352c3049b9556b42d3a887c8b39a8f17eb4ec7073

    SHA512

    df1e707274dc76f2b358fa7fe948687a1e760980e658c06f7ecf3c86b65dc5cba1c26593c48307efb393e35ec31f92c560934129ca11bb28aea8ac612c112b80

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

    Filesize

    2KB

    MD5

    8384daa670f00cf4c9496f2d12d9b8f6

    SHA1

    e419e19ca81b413db0c32a571f53fcaf281dfb8f

    SHA256

    6393535545043090f4d6a7fb15c2bfd37eab1a1059a2af20eabb88263443d545

    SHA512

    36e76e832545004f0c571954cff28aba32d18b8fe27bf83e103a62454c1e585728d47526db7a63ccc5b0496f18f8770ff467137b7a958207a96a5b8df60a4838

  • memory/372-84-0x0000000006360000-0x000000000636A000-memory.dmp

    Filesize

    40KB

  • memory/372-83-0x00000000063E0000-0x0000000006472000-memory.dmp

    Filesize

    584KB

  • memory/372-82-0x00000000062F0000-0x0000000006340000-memory.dmp

    Filesize

    320KB

  • memory/372-81-0x0000000004EF0000-0x0000000004F56000-memory.dmp

    Filesize

    408KB

  • memory/372-66-0x00000000052D0000-0x0000000005874000-memory.dmp

    Filesize

    5.6MB

  • memory/372-62-0x0000000000570000-0x00000000005B0000-memory.dmp

    Filesize

    256KB

  • memory/3308-32-0x00007FFBCAF10000-0x00007FFBCAF51000-memory.dmp

    Filesize

    260KB

  • memory/3308-31-0x00007FFBC8A40000-0x00007FFBC8C4B000-memory.dmp

    Filesize

    2.0MB

  • memory/3308-25-0x00007FFBE12D0000-0x00007FFBE12E7000-memory.dmp

    Filesize

    92KB

  • memory/3308-24-0x00007FFBE66A0000-0x00007FFBE66B8000-memory.dmp

    Filesize

    96KB

  • memory/3308-36-0x00007FFBCAE00000-0x00007FFBCAE11000-memory.dmp

    Filesize

    68KB

  • memory/3308-39-0x00007FFBC6670000-0x00007FFBC6682000-memory.dmp

    Filesize

    72KB

  • memory/3308-38-0x00007FFBCADC0000-0x00007FFBCADD1000-memory.dmp

    Filesize

    68KB

  • memory/3308-37-0x00007FFBCADE0000-0x00007FFBCADF1000-memory.dmp

    Filesize

    68KB

  • memory/3308-35-0x00007FFBCB850000-0x00007FFBCB868000-memory.dmp

    Filesize

    96KB

  • memory/3308-34-0x00007FFBCAE20000-0x00007FFBCAE41000-memory.dmp

    Filesize

    132KB

  • memory/3308-23-0x00007FFBC9970000-0x00007FFBC9C26000-memory.dmp

    Filesize

    2.7MB

  • memory/3308-33-0x00007FFBC7990000-0x00007FFBC8A40000-memory.dmp

    Filesize

    16.7MB

  • memory/3308-27-0x00007FFBD3650000-0x00007FFBD3667000-memory.dmp

    Filesize

    92KB

  • memory/3308-116-0x00007FFBC7990000-0x00007FFBC8A40000-memory.dmp

    Filesize

    16.7MB

  • memory/3308-28-0x00007FFBD2E30000-0x00007FFBD2E41000-memory.dmp

    Filesize

    68KB

  • memory/3308-26-0x00007FFBD3670000-0x00007FFBD3681000-memory.dmp

    Filesize

    68KB

  • memory/3308-136-0x00007FFBC7990000-0x00007FFBC8A40000-memory.dmp

    Filesize

    16.7MB

  • memory/3308-29-0x00007FFBD2A40000-0x00007FFBD2A5D000-memory.dmp

    Filesize

    116KB

  • memory/3308-30-0x00007FFBCB870000-0x00007FFBCB881000-memory.dmp

    Filesize

    68KB

  • memory/3308-21-0x00007FF67D170000-0x00007FF67D268000-memory.dmp

    Filesize

    992KB

  • memory/3308-22-0x00007FFBDD070000-0x00007FFBDD0A4000-memory.dmp

    Filesize

    208KB

  • memory/3308-134-0x00007FFBDD070000-0x00007FFBDD0A4000-memory.dmp

    Filesize

    208KB

  • memory/3308-135-0x00007FFBC9970000-0x00007FFBC9C26000-memory.dmp

    Filesize

    2.7MB

  • memory/3308-133-0x00007FF67D170000-0x00007FF67D268000-memory.dmp

    Filesize

    992KB

  • memory/3308-87-0x00007FFBC9970000-0x00007FFBC9C26000-memory.dmp

    Filesize

    2.7MB

  • memory/3308-97-0x00007FFBC7990000-0x00007FFBC8A40000-memory.dmp

    Filesize

    16.7MB

  • memory/4260-60-0x000001F641AD0000-0x000001F641AD8000-memory.dmp

    Filesize

    32KB

  • memory/4260-4-0x000001F63F560000-0x000001F63F582000-memory.dmp

    Filesize

    136KB

  • memory/4260-14-0x000001F641AE0000-0x000001F641B24000-memory.dmp

    Filesize

    272KB

  • memory/4260-15-0x000001F641BB0000-0x000001F641C26000-memory.dmp

    Filesize

    472KB

  • memory/4260-61-0x000001F641B30000-0x000001F641B3C000-memory.dmp

    Filesize

    48KB