Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28-04-2024 01:14

General

  • Target

    Commercial Invoice PDF.exe

  • Size

    822KB

  • MD5

    5a12438b3b4c926c12a9376c7bf13426

  • SHA1

    c3185c6a5e5f07a5befbe4af7131d05634f5d1a3

  • SHA256

    1a794211deaa0ecb6abc6101d7c1bd61111b4dd2d895ee7ecf78fbf17f4c9ab3

  • SHA512

    16c1e0e18eb8b3345b8b05443b782cb1dd35492ac986811c39f3cdce8dfe85b003aba029ffca0e38aa33c951d0d08281825152b0e239471eac3de18ac67864d0

  • SSDEEP

    12288:tEqnHvjNIrpf9rN/mc/CaBmIwsyaPSIir97G6NLOZCGKEgbjuPBB5uO12rq:txPjKr5BNDWVxcSIiRG6atlB5N

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Commercial Invoice PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\Commercial Invoice PDF.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2412
    • 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\Commercial Invoice PDF.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2604
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\CmxzrHBB.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2660
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CmxzrHBB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4116.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2568
    • C:\Users\Admin\AppData\Local\Temp\Commercial Invoice PDF.exe
      "C:\Users\Admin\AppData\Local\Temp\Commercial Invoice PDF.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2572

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp4116.tmp

    Filesize

    1KB

    MD5

    a351be93d764fb87c712ab5921235f3d

    SHA1

    a2ba73db945c05802db324a9f4a5f0384a26feab

    SHA256

    a6bda8df90a60518ad4f70efdf00b1c47b426d9fe2535a578982ba743a6f902d

    SHA512

    fb6d6b771dbf71aa8bc414e926b3797e67f18b2a8d2047437ef0f5c3e5c802e1b4a76fda4f9573eb149a31d9e81a860fd7d71b3757e66d3b76b8fc0d9f1a6023

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\73VCM2F573FJNH1IH2EE.temp

    Filesize

    7KB

    MD5

    762b0abad3217110d05435e7ed0f9dd5

    SHA1

    785efb781402ccedaa86f487571301cb2938b286

    SHA256

    59585a58f13c4c7c306bd96c5dde3ffa093fec71dcdc1dc1c624c9c9875061e3

    SHA512

    fceb7bf6ab203491484c9b789c9eb4f032fb6a6c359d73d0db49fa78be10e05b4032e083bcc8033b65fd696195c4be3bb5973804d21823339b8663e4a3b93412

  • memory/2412-31-0x0000000074840000-0x0000000074F2E000-memory.dmp

    Filesize

    6.9MB

  • memory/2412-1-0x0000000074840000-0x0000000074F2E000-memory.dmp

    Filesize

    6.9MB

  • memory/2412-2-0x00000000050C0000-0x0000000005100000-memory.dmp

    Filesize

    256KB

  • memory/2412-3-0x0000000000270000-0x0000000000290000-memory.dmp

    Filesize

    128KB

  • memory/2412-4-0x00000000002A0000-0x00000000002B4000-memory.dmp

    Filesize

    80KB

  • memory/2412-5-0x0000000005B40000-0x0000000005BC4000-memory.dmp

    Filesize

    528KB

  • memory/2412-0-0x0000000000840000-0x0000000000914000-memory.dmp

    Filesize

    848KB

  • memory/2572-18-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2572-28-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2572-27-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2572-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2572-24-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2572-22-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2572-20-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/2572-30-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB