Analysis

  • max time kernel
    59s
  • max time network
    61s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    04-01-2023 07:13

General

  • Target

    c5e78e9d7fbac0572d8b276968799bbced619cc7.exe

  • Size

    1.1MB

  • MD5

    c8f78f4ec916de2a794ada0f74524a92

  • SHA1

    c5e78e9d7fbac0572d8b276968799bbced619cc7

  • SHA256

    7f7322dd08a3f54e840b31b0c1c01a65676701cb15ed97ea3cdb6b0edf5402db

  • SHA512

    b2c2fe87e2a335477a179ef184a0f10c389965e9774a6b4608de24ca2a37cc42592a43d7f7e2a50bc9c5a16dfaacefe970f87454acfdac7b6b4a7d2a338fe009

  • SSDEEP

    12288:YV4g0gWsfISQ5KDYmMjlyCwv8GJhzVJMAv5gSi8riwUTiLdw/6WHvYM16ffrifPc:y0gWBSM8j/JhxZiSi8lUTyvWX1Qf+c

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5590596148:AAFELAezvK26mOp3KWIpAgxEVzQMQ56n6zg/

Signatures

  • AgentTesla

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

  • 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c5e78e9d7fbac0572d8b276968799bbced619cc7.exe
    "C:\Users\Admin\AppData\Local\Temp\c5e78e9d7fbac0572d8b276968799bbced619cc7.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:944
    • 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\c5e78e9d7fbac0572d8b276968799bbced619cc7.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1180
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YPAKilfGihHhm.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1448
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YPAKilfGihHhm" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA4E8.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:284
    • C:\Users\Admin\AppData\Local\Temp\c5e78e9d7fbac0572d8b276968799bbced619cc7.exe
      "C:\Users\Admin\AppData\Local\Temp\c5e78e9d7fbac0572d8b276968799bbced619cc7.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:544

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpA4E8.tmp

    Filesize

    1KB

    MD5

    844870d645148bc3759321982048f811

    SHA1

    8e08b28a9c93133f3deebcd47f6a3efb82b273b5

    SHA256

    c2eae45dc9f9e71de7c66e8c82e848af89917a55d3a81a60a05a8563428e0ac0

    SHA512

    8e8c1600334857c48d662b50aa4dcc0bdef94dd4103ef0d0b6b56d9f18f82b5aa0dd8d2ca1b3881970caa392cdd5e755dd26aa2878b87edc210542876218b649

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

    Filesize

    7KB

    MD5

    57b75c52a91367aae60a41af40988417

    SHA1

    5116c5e439c17a7082482fa814abdf84d645c69c

    SHA256

    a83a6e3a6a41c430586466ad8a3da1c89198240627795fa4a0e42baa29d30317

    SHA512

    651d572b5b40ef8462d992c7267eb3d0d9bedc3b563f4ef38794cd5491e276b336aac6c4d048a43cf3854521b8a537ea7392ed465ccef53b94e692d59643a31b

  • memory/284-62-0x0000000000000000-mapping.dmp

  • memory/544-67-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/544-77-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/544-75-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/544-73-0x000000000042A16E-mapping.dmp

  • memory/544-72-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/544-71-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/544-70-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/544-68-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/944-66-0x0000000004840000-0x000000000489E000-memory.dmp

    Filesize

    376KB

  • memory/944-54-0x0000000001050000-0x0000000001164000-memory.dmp

    Filesize

    1.1MB

  • memory/944-58-0x0000000005660000-0x00000000056F6000-memory.dmp

    Filesize

    600KB

  • memory/944-57-0x0000000000550000-0x000000000055A000-memory.dmp

    Filesize

    40KB

  • memory/944-56-0x0000000000320000-0x0000000000336000-memory.dmp

    Filesize

    88KB

  • memory/944-55-0x0000000075491000-0x0000000075493000-memory.dmp

    Filesize

    8KB

  • memory/1180-59-0x0000000000000000-mapping.dmp

  • memory/1180-79-0x000000006F610000-0x000000006FBBB000-memory.dmp

    Filesize

    5.7MB

  • memory/1180-81-0x000000006F610000-0x000000006FBBB000-memory.dmp

    Filesize

    5.7MB

  • memory/1448-61-0x0000000000000000-mapping.dmp

  • memory/1448-80-0x000000006F610000-0x000000006FBBB000-memory.dmp

    Filesize

    5.7MB

  • memory/1448-82-0x000000006F610000-0x000000006FBBB000-memory.dmp

    Filesize

    5.7MB