Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-03-2024 02:16

General

  • Target

    4ac227785c3f1cdd4b05a9d2ebb94e88a4af65303833c4dbfc35113dc21c97aa.exe

  • Size

    669KB

  • MD5

    947ec2135e371d80d87ca34a867efe29

  • SHA1

    6c58ddffec036207692a8c65ebc844d3ab3aafcf

  • SHA256

    4ac227785c3f1cdd4b05a9d2ebb94e88a4af65303833c4dbfc35113dc21c97aa

  • SHA512

    c7f556fd7ca29906873414d28eb0e9217a767544a861deb971b5ab5b3fa7b4dc8c1a37224e383e324389c0cffd34a5a5fc362fcd570e5fa18eb47b9f1f6dd43a

  • SSDEEP

    12288:RkXayww0J7RG6YnakFrTtJ7IomjXXIR+w8/6ODi6dU3bAil+8I4:WajBtN+aOrTtJ7IZ4EwQh1d9iot

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs
  • Detects executables packed with SmartAssembly 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4ac227785c3f1cdd4b05a9d2ebb94e88a4af65303833c4dbfc35113dc21c97aa.exe
    "C:\Users\Admin\AppData\Local\Temp\4ac227785c3f1cdd4b05a9d2ebb94e88a4af65303833c4dbfc35113dc21c97aa.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:60
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\4ac227785c3f1cdd4b05a9d2ebb94e88a4af65303833c4dbfc35113dc21c97aa.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3124
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\NxmtwwVGOtEdjd.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3152
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NxmtwwVGOtEdjd" /XML "C:\Users\Admin\AppData\Local\Temp\tmp66C8.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4424
    • C:\Users\Admin\AppData\Local\Temp\4ac227785c3f1cdd4b05a9d2ebb94e88a4af65303833c4dbfc35113dc21c97aa.exe
      "C:\Users\Admin\AppData\Local\Temp\4ac227785c3f1cdd4b05a9d2ebb94e88a4af65303833c4dbfc35113dc21c97aa.exe"
      2⤵
        PID:4608
      • C:\Users\Admin\AppData\Local\Temp\4ac227785c3f1cdd4b05a9d2ebb94e88a4af65303833c4dbfc35113dc21c97aa.exe
        "C:\Users\Admin\AppData\Local\Temp\4ac227785c3f1cdd4b05a9d2ebb94e88a4af65303833c4dbfc35113dc21c97aa.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:4696

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Scheduled Task/Job

    1
    T1053

    Persistence

    Scheduled Task/Job

    1
    T1053

    Privilege Escalation

    Scheduled Task/Job

    1
    T1053

    Credential Access

    Unsecured Credentials

    4
    T1552

    Credentials In Files

    3
    T1552.001

    Credentials in Registry

    1
    T1552.002

    Discovery

    Query Registry

    1
    T1012

    System Information Discovery

    2
    T1082

    Collection

    Data from Local System

    4
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
      Filesize

      2KB

      MD5

      968cb9309758126772781b83adb8a28f

      SHA1

      8da30e71accf186b2ba11da1797cf67f8f78b47c

      SHA256

      92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

      SHA512

      4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

      18KB

      MD5

      718ef4d520178edb83eb3cc8903fccbb

      SHA1

      5a15541e8afb3823ddcc3a24b38ea60f05dd8b8d

      SHA256

      f1c21d1d877860f295850f4d5ba9ed54da3dd67503264e4b77e41c3c93f3eb6d

      SHA512

      8396ce56596e5fad1fdeb5cd1acea7b44d3a2444b33702dac1f370a73a2e3c3b28382b5392c03f7049d691bec3bcda930b361bb4e809c03355132387f6749b7c

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2ywi4q3a.qyk.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\tmp66C8.tmp
      Filesize

      1KB

      MD5

      aff884d924bf638f0553cdbc2b750cd4

      SHA1

      7f8f1862607dd1f51ed0c2c9b2d92fefac65a560

      SHA256

      e9f7747882b11eb33616f261c8fe4567d8990d36460ea2d4d1612bd6a5751c3b

      SHA512

      c256351f2cc5dbd30953cf707e6a0a13aaeee016f986d68a291b991d02d51b433adce3e18895da1b8ed722e5320773e1287da9ba7b002294af5d1c803317f884

    • memory/60-8-0x0000000005590000-0x000000000559C000-memory.dmp
      Filesize

      48KB

    • memory/60-1-0x0000000075170000-0x0000000075920000-memory.dmp
      Filesize

      7.7MB

    • memory/60-6-0x0000000005750000-0x00000000057EC000-memory.dmp
      Filesize

      624KB

    • memory/60-7-0x0000000005570000-0x0000000005582000-memory.dmp
      Filesize

      72KB

    • memory/60-0-0x0000000000960000-0x0000000000A0E000-memory.dmp
      Filesize

      696KB

    • memory/60-9-0x0000000006A50000-0x0000000006AC2000-memory.dmp
      Filesize

      456KB

    • memory/60-37-0x0000000075170000-0x0000000075920000-memory.dmp
      Filesize

      7.7MB

    • memory/60-5-0x00000000054A0000-0x00000000054AA000-memory.dmp
      Filesize

      40KB

    • memory/60-2-0x0000000005AB0000-0x0000000006054000-memory.dmp
      Filesize

      5.6MB

    • memory/60-3-0x00000000053E0000-0x0000000005472000-memory.dmp
      Filesize

      584KB

    • memory/60-4-0x0000000005650000-0x0000000005660000-memory.dmp
      Filesize

      64KB

    • memory/3124-15-0x0000000075170000-0x0000000075920000-memory.dmp
      Filesize

      7.7MB

    • memory/3124-84-0x00000000072F0000-0x0000000007301000-memory.dmp
      Filesize

      68KB

    • memory/3124-17-0x0000000002630000-0x0000000002640000-memory.dmp
      Filesize

      64KB

    • memory/3124-91-0x0000000075170000-0x0000000075920000-memory.dmp
      Filesize

      7.7MB

    • memory/3124-14-0x00000000024E0000-0x0000000002516000-memory.dmp
      Filesize

      216KB

    • memory/3124-24-0x00000000056F0000-0x0000000005756000-memory.dmp
      Filesize

      408KB

    • memory/3124-26-0x0000000005760000-0x00000000057C6000-memory.dmp
      Filesize

      408KB

    • memory/3124-38-0x00000000057D0000-0x0000000005B24000-memory.dmp
      Filesize

      3.3MB

    • memory/3124-16-0x0000000002630000-0x0000000002640000-memory.dmp
      Filesize

      64KB

    • memory/3124-18-0x0000000004FF0000-0x0000000005618000-memory.dmp
      Filesize

      6.2MB

    • memory/3124-80-0x0000000007740000-0x0000000007DBA000-memory.dmp
      Filesize

      6.5MB

    • memory/3124-77-0x0000000006FC0000-0x0000000007063000-memory.dmp
      Filesize

      652KB

    • memory/3124-79-0x0000000002630000-0x0000000002640000-memory.dmp
      Filesize

      64KB

    • memory/3124-50-0x0000000005DD0000-0x0000000005DEE000-memory.dmp
      Filesize

      120KB

    • memory/3124-56-0x000000007F0E0000-0x000000007F0F0000-memory.dmp
      Filesize

      64KB

    • memory/3124-78-0x0000000002630000-0x0000000002640000-memory.dmp
      Filesize

      64KB

    • memory/3124-55-0x0000000071840000-0x000000007188C000-memory.dmp
      Filesize

      304KB

    • memory/3152-51-0x0000000006A00000-0x0000000006A4C000-memory.dmp
      Filesize

      304KB

    • memory/3152-19-0x0000000075170000-0x0000000075920000-memory.dmp
      Filesize

      7.7MB

    • memory/3152-66-0x00000000077F0000-0x000000000780E000-memory.dmp
      Filesize

      120KB

    • memory/3152-54-0x0000000071840000-0x000000007188C000-memory.dmp
      Filesize

      304KB

    • memory/3152-52-0x000000007FA50000-0x000000007FA60000-memory.dmp
      Filesize

      64KB

    • memory/3152-53-0x0000000006BF0000-0x0000000006C22000-memory.dmp
      Filesize

      200KB

    • memory/3152-95-0x0000000075170000-0x0000000075920000-memory.dmp
      Filesize

      7.7MB

    • memory/3152-72-0x0000000002D40000-0x0000000002D50000-memory.dmp
      Filesize

      64KB

    • memory/3152-81-0x0000000007950000-0x000000000796A000-memory.dmp
      Filesize

      104KB

    • memory/3152-22-0x0000000002D40000-0x0000000002D50000-memory.dmp
      Filesize

      64KB

    • memory/3152-82-0x00000000079C0000-0x00000000079CA000-memory.dmp
      Filesize

      40KB

    • memory/3152-83-0x0000000007BD0000-0x0000000007C66000-memory.dmp
      Filesize

      600KB

    • memory/3152-23-0x0000000005E90000-0x0000000005EB2000-memory.dmp
      Filesize

      136KB

    • memory/3152-85-0x0000000007B80000-0x0000000007B8E000-memory.dmp
      Filesize

      56KB

    • memory/3152-86-0x0000000007B90000-0x0000000007BA4000-memory.dmp
      Filesize

      80KB

    • memory/3152-87-0x0000000007C90000-0x0000000007CAA000-memory.dmp
      Filesize

      104KB

    • memory/3152-88-0x0000000007C70000-0x0000000007C78000-memory.dmp
      Filesize

      32KB

    • memory/3152-21-0x0000000002D40000-0x0000000002D50000-memory.dmp
      Filesize

      64KB

    • memory/4696-25-0x0000000000400000-0x0000000000430000-memory.dmp
      Filesize

      192KB

    • memory/4696-48-0x0000000075170000-0x0000000075920000-memory.dmp
      Filesize

      7.7MB

    • memory/4696-49-0x0000000005780000-0x0000000005790000-memory.dmp
      Filesize

      64KB

    • memory/4696-96-0x0000000006AA0000-0x0000000006AF0000-memory.dmp
      Filesize

      320KB

    • memory/4696-97-0x0000000006CC0000-0x0000000006E82000-memory.dmp
      Filesize

      1.8MB

    • memory/4696-98-0x0000000075170000-0x0000000075920000-memory.dmp
      Filesize

      7.7MB

    • memory/4696-99-0x0000000005780000-0x0000000005790000-memory.dmp
      Filesize

      64KB