Analysis

  • max time kernel
    119s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    17-06-2024 16:48

General

  • Target

    z27FACTURA09654700.BAT.exe

  • Size

    1.0MB

  • MD5

    aed00ff3e85dbf1bbf99939966939b3a

  • SHA1

    d02a5bc420207a7958e34a4740968439969f5b19

  • SHA256

    b772162c5b510c5427be045abfdc43c29756217e2ed924ce4c4388bd457a4987

  • SHA512

    08ad4f11a67a9e8228d83e96fbcccd98910d53ff2929e2d70d336b8e808d4d7e37f90d157e2747b744eb19b451aba2a0985022207a68ff50dcbd8cdef5e1f50a

  • SSDEEP

    24576:HAHnh+eWsN3skA4RV1Hom2KXMmHauOVaz7jxokZf4vFEGR5:6h+ZkldoPK8YauOIzHxokZfqFEo

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.antoniomayol.com:21
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    cMhKDQUk1{;%

Signatures

  • AgentTesla

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

  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\z27FACTURA09654700.BAT.exe
    "C:\Users\Admin\AppData\Local\Temp\z27FACTURA09654700.BAT.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1908
    • C:\Users\Admin\AppData\Local\obtenebrate\corynteria.exe
      "C:\Users\Admin\AppData\Local\Temp\z27FACTURA09654700.BAT.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1388
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "C:\Users\Admin\AppData\Local\Temp\z27FACTURA09654700.BAT.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1212
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1388 -s 320
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2992

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\benting

    MD5

    d41d8cd98f00b204e9800998ecf8427e

    SHA1

    da39a3ee5e6b4b0d3255bfef95601890afd80709

    SHA256

    e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

    SHA512

    cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

  • \Users\Admin\AppData\Local\obtenebrate\corynteria.exe

    Filesize

    1.0MB

    MD5

    aed00ff3e85dbf1bbf99939966939b3a

    SHA1

    d02a5bc420207a7958e34a4740968439969f5b19

    SHA256

    b772162c5b510c5427be045abfdc43c29756217e2ed924ce4c4388bd457a4987

    SHA512

    08ad4f11a67a9e8228d83e96fbcccd98910d53ff2929e2d70d336b8e808d4d7e37f90d157e2747b744eb19b451aba2a0985022207a68ff50dcbd8cdef5e1f50a

  • memory/1212-30-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/1212-33-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/1212-34-0x0000000000400000-0x0000000000442000-memory.dmp

    Filesize

    264KB

  • memory/1212-39-0x0000000073BCE000-0x0000000073BCF000-memory.dmp

    Filesize

    4KB

  • memory/1212-41-0x0000000073BC0000-0x00000000742AE000-memory.dmp

    Filesize

    6.9MB

  • memory/1212-42-0x0000000073BCE000-0x0000000073BCF000-memory.dmp

    Filesize

    4KB

  • memory/1212-43-0x0000000073BC0000-0x00000000742AE000-memory.dmp

    Filesize

    6.9MB

  • memory/1908-10-0x0000000000120000-0x0000000000124000-memory.dmp

    Filesize

    16KB