Analysis

  • max time kernel
    121s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    02-10-2024 06:19

General

  • Target

    FYCC new order S460013746-560121121.exe

  • Size

    920KB

  • MD5

    78eff09f295aa4b3aaf36af5245efe94

  • SHA1

    dea545e8b85f2c1201f7aa3a54f643826ca8a6ed

  • SHA256

    38f275624c634801c164c2c8f3294cbeea49b47e8e8d83bda53a0bc8aa7f7106

  • SHA512

    a8b49247156aa7004206f24211054f7f37c73df06e8a85ecf843e9c44cc99a5cf29886e85ba03d89a87a1d3968322c25cdef7877ae6c5efcfa946910204ce67f

  • SSDEEP

    12288:T3TEG/N9AKPGu+MAyn6+6Slh5/2qVe2lR8XaZW4IaBAP7r9r/+ppppppppppppp7:8AnAPRo6+pPOnoR8X2W4JBA1q

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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 3 TTPs

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

  • 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 5 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FYCC new order S460013746-560121121.exe
    "C:\Users\Admin\AppData\Local\Temp\FYCC new order S460013746-560121121.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2968
    • 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\FYCC new order S460013746-560121121.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2780
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\zriEHRxkd.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2628
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zriEHRxkd" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9666.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2736
    • C:\Users\Admin\AppData\Local\Temp\FYCC new order S460013746-560121121.exe
      "C:\Users\Admin\AppData\Local\Temp\FYCC new order S460013746-560121121.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1500

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp9666.tmp

    Filesize

    1KB

    MD5

    34d28f9e2307d5b7ed14223027a5aacb

    SHA1

    7f7b6e290b4a1eaec9abc877e346c8b7248abaa2

    SHA256

    d353726021feaf5a6076547d3339c2c8afdab8a98e8caaa44a3b686ade6b9cbf

    SHA512

    ed40f509600a7e546123c0a630447ecb7052b2bd997892528d488a55f708bb63e838ef9845c0c1cddd39f726dccc7d150eef1fb09b191769d83cd9b4b12a4a61

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    be4dc1d9d4b4601f6064c4256294709a

    SHA1

    eac473189ea4a88da9634da1589cd8a9271f58a9

    SHA256

    f1fc33ae60d0c2b3c59a5ced0f8e9d1c313b6b65e8355976e5f02024dc746854

    SHA512

    1aa8e7d389d01653aca46355e5f098ff7bd6ecb003bbe1a2aa3fc2cec748ad3d6bbcb834589f84cebe59827ed2d9d4be8a640e8998aa7092c9299ec6240c1d38

  • memory/1500-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1500-31-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/1500-19-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/1500-21-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/1500-23-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/1500-25-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/1500-28-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/1500-29-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2968-6-0x0000000000730000-0x00000000007B2000-memory.dmp

    Filesize

    520KB

  • memory/2968-1-0x00000000000C0000-0x00000000001AC000-memory.dmp

    Filesize

    944KB

  • memory/2968-0-0x00000000740CE000-0x00000000740CF000-memory.dmp

    Filesize

    4KB

  • memory/2968-2-0x00000000740C0000-0x00000000747AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2968-3-0x0000000000450000-0x000000000046E000-memory.dmp

    Filesize

    120KB

  • memory/2968-5-0x00000000740C0000-0x00000000747AE000-memory.dmp

    Filesize

    6.9MB

  • memory/2968-4-0x00000000740CE000-0x00000000740CF000-memory.dmp

    Filesize

    4KB

  • memory/2968-32-0x00000000740C0000-0x00000000747AE000-memory.dmp

    Filesize

    6.9MB