Analysis

  • max time kernel
    142s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-12-2023 09:24

General

  • Target

    SAF-C161CS-LF-CA INFINEON2000 PCS.exe

  • Size

    935KB

  • MD5

    3b339aabaf3bfb3af9d0e0887e554835

  • SHA1

    bb2d2846e92fd0a4c5e0a2040e74a3c7cfab8d02

  • SHA256

    9a1a81688bf7f92903009cceb1e592668a04048deebb264dfb5fd6c7c6fdd650

  • SHA512

    69a49929163d9c6c30630861ceb0e52fa145adfaf1deed43732298d14aabaf7c92ff46af5d14f0bd61a40677534afe63d1aa06599d91273c8846bd368e615871

  • SSDEEP

    24576:SG+Cw0kXuGN5jQypH+jDhtscbfnbOdVSrKHm9SO:6Cw0QuGN5REhbfbmVPm

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.medicalhome.com.pe
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    MHinfo01

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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
  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SAF-C161CS-LF-CA INFINEON2000 PCS.exe
    "C:\Users\Admin\AppData\Local\Temp\SAF-C161CS-LF-CA INFINEON2000 PCS.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4744
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QAJeFu.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3556
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QAJeFu" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD7E1.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3236
    • C:\Users\Admin\AppData\Local\Temp\SAF-C161CS-LF-CA INFINEON2000 PCS.exe
      "C:\Users\Admin\AppData\Local\Temp\SAF-C161CS-LF-CA INFINEON2000 PCS.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1020

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cets0yjd.eph.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpD7E1.tmp

    Filesize

    1KB

    MD5

    d56734985a5376cd8eb5a787ee917408

    SHA1

    7492a6f95f3afddf5ccb1ce511088b0f546e5e41

    SHA256

    68f6fc59f818c3463a4d7744656a2115758329ef5952d01cafacc1ddef798f14

    SHA512

    2a76adde2f0ef41e51c90fbcb6be3fa9fe753c6603bb4e41e79a8b63803a18026c8361db073567b255a29d45105794c7605a73678113d97ad8a06840ab954fd0

  • C:\Users\Admin\AppData\Roaming\TZCld\TZCld.exe

    Filesize

    935KB

    MD5

    3b339aabaf3bfb3af9d0e0887e554835

    SHA1

    bb2d2846e92fd0a4c5e0a2040e74a3c7cfab8d02

    SHA256

    9a1a81688bf7f92903009cceb1e592668a04048deebb264dfb5fd6c7c6fdd650

    SHA512

    69a49929163d9c6c30630861ceb0e52fa145adfaf1deed43732298d14aabaf7c92ff46af5d14f0bd61a40677534afe63d1aa06599d91273c8846bd368e615871

  • memory/1020-59-0x0000000005F20000-0x0000000005F70000-memory.dmp

    Filesize

    320KB

  • memory/1020-21-0x0000000000400000-0x0000000000476000-memory.dmp

    Filesize

    472KB

  • memory/1020-73-0x0000000004FC0000-0x0000000004FD0000-memory.dmp

    Filesize

    64KB

  • memory/1020-72-0x0000000074660000-0x0000000074E10000-memory.dmp

    Filesize

    7.7MB

  • memory/1020-33-0x0000000004FC0000-0x0000000004FD0000-memory.dmp

    Filesize

    64KB

  • memory/1020-26-0x0000000074660000-0x0000000074E10000-memory.dmp

    Filesize

    7.7MB

  • memory/3556-19-0x0000000004D70000-0x0000000005398000-memory.dmp

    Filesize

    6.2MB

  • memory/3556-41-0x0000000005E10000-0x0000000005E5C000-memory.dmp

    Filesize

    304KB

  • memory/3556-15-0x0000000000B00000-0x0000000000B36000-memory.dmp

    Filesize

    216KB

  • memory/3556-16-0x0000000074660000-0x0000000074E10000-memory.dmp

    Filesize

    7.7MB

  • memory/3556-39-0x0000000005580000-0x00000000058D4000-memory.dmp

    Filesize

    3.3MB

  • memory/3556-18-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/3556-71-0x0000000074660000-0x0000000074E10000-memory.dmp

    Filesize

    7.7MB

  • memory/3556-68-0x0000000007070000-0x0000000007078000-memory.dmp

    Filesize

    32KB

  • memory/3556-67-0x0000000007090000-0x00000000070AA000-memory.dmp

    Filesize

    104KB

  • memory/3556-24-0x0000000004950000-0x0000000004972000-memory.dmp

    Filesize

    136KB

  • memory/3556-34-0x0000000005410000-0x0000000005476000-memory.dmp

    Filesize

    408KB

  • memory/3556-66-0x0000000006F90000-0x0000000006FA4000-memory.dmp

    Filesize

    80KB

  • memory/3556-65-0x0000000006F80000-0x0000000006F8E000-memory.dmp

    Filesize

    56KB

  • memory/3556-64-0x0000000006F50000-0x0000000006F61000-memory.dmp

    Filesize

    68KB

  • memory/3556-27-0x00000000053A0000-0x0000000005406000-memory.dmp

    Filesize

    408KB

  • memory/3556-63-0x0000000006FD0000-0x0000000007066000-memory.dmp

    Filesize

    600KB

  • memory/3556-40-0x0000000005A40000-0x0000000005A5E000-memory.dmp

    Filesize

    120KB

  • memory/3556-62-0x0000000006DC0000-0x0000000006DCA000-memory.dmp

    Filesize

    40KB

  • memory/3556-61-0x0000000006D50000-0x0000000006D6A000-memory.dmp

    Filesize

    104KB

  • memory/3556-60-0x0000000007390000-0x0000000007A0A000-memory.dmp

    Filesize

    6.5MB

  • memory/3556-58-0x0000000006A30000-0x0000000006AD3000-memory.dmp

    Filesize

    652KB

  • memory/3556-44-0x00000000006F0000-0x0000000000700000-memory.dmp

    Filesize

    64KB

  • memory/3556-45-0x000000007FAB0000-0x000000007FAC0000-memory.dmp

    Filesize

    64KB

  • memory/3556-46-0x0000000006000000-0x0000000006032000-memory.dmp

    Filesize

    200KB

  • memory/3556-47-0x00000000709F0000-0x0000000070A3C000-memory.dmp

    Filesize

    304KB

  • memory/3556-57-0x0000000005FE0000-0x0000000005FFE000-memory.dmp

    Filesize

    120KB

  • memory/4744-2-0x00000000055B0000-0x0000000005B54000-memory.dmp

    Filesize

    5.6MB

  • memory/4744-1-0x0000000000460000-0x0000000000550000-memory.dmp

    Filesize

    960KB

  • memory/4744-10-0x00000000079E0000-0x0000000007A90000-memory.dmp

    Filesize

    704KB

  • memory/4744-23-0x0000000005180000-0x0000000005190000-memory.dmp

    Filesize

    64KB

  • memory/4744-6-0x0000000005230000-0x00000000052CC000-memory.dmp

    Filesize

    624KB

  • memory/4744-7-0x00000000051E0000-0x00000000051F6000-memory.dmp

    Filesize

    88KB

  • memory/4744-0-0x0000000074660000-0x0000000074E10000-memory.dmp

    Filesize

    7.7MB

  • memory/4744-25-0x0000000074660000-0x0000000074E10000-memory.dmp

    Filesize

    7.7MB

  • memory/4744-20-0x0000000074660000-0x0000000074E10000-memory.dmp

    Filesize

    7.7MB

  • memory/4744-9-0x0000000005210000-0x000000000521A000-memory.dmp

    Filesize

    40KB

  • memory/4744-8-0x00000000051F0000-0x00000000051F8000-memory.dmp

    Filesize

    32KB

  • memory/4744-4-0x0000000005180000-0x0000000005190000-memory.dmp

    Filesize

    64KB

  • memory/4744-3-0x0000000004F20000-0x0000000004FB2000-memory.dmp

    Filesize

    584KB

  • memory/4744-5-0x0000000004FE0000-0x0000000004FEA000-memory.dmp

    Filesize

    40KB