Analysis

  • max time kernel
    117s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 10:35

General

  • Target

    Payment Copy.exe

  • Size

    510KB

  • MD5

    f554bb70eb38b2cdf9612469ba094651

  • SHA1

    b40eb3a92f67f8a2206cf74d4caaa7a7f8b9d64b

  • SHA256

    464e7363198201699fa0503be713d1776fb07eefc63830cd08494f26ec93ba8b

  • SHA512

    281aca43b9c52eddfc0dfe2c15d7c852680f33a9c3d8fdf39e56b4ad723e4853ef85270100fa6b25963d254a6c62e836ddde67592f683d425f34f73a530ecee5

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.chenklins.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    WIMo-3%Zv,N.

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment Copy.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment Copy.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:872
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c schtasks /Create /TN registery /XML "C:\Users\Admin\AppData\Local\Temp\ecac908572b4480db8bdd024c7712d15.xml"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1108
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /Create /TN registery /XML "C:\Users\Admin\AppData\Local\Temp\ecac908572b4480db8bdd024c7712d15.xml"
        3⤵
        • Creates scheduled task(s)
        PID:2028
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
      "C:\Users\Admin\AppData\Local\Temp\Payment Copy.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:1632

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Collection

Email Collection

1
T1114

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\ecac908572b4480db8bdd024c7712d15.xml
    Filesize

    1KB

    MD5

    20af46aa6925a3b6d1d495cddfc9bce7

    SHA1

    94c29e6a04a2c1c4ffc5006b431dd9d41cdb837c

    SHA256

    705527f99c916ccf9f5e0c85ecf4d336b2fb68ca734ebf0238d2770837807343

    SHA512

    5b5c689ddd7f5bfcc54d36e63b127bdba39532290efde4c4c129e9e4c7652207ff3591faedb7d21e5f44f3d064991ed3481866579f9abd775045e2b58008d80a

  • memory/872-57-0x0000000000990000-0x0000000000A13000-memory.dmp
    Filesize

    524KB

  • memory/1108-54-0x0000000000000000-mapping.dmp
  • memory/1632-58-0x0000000000400000-0x0000000000466000-memory.dmp
    Filesize

    408KB

  • memory/1632-59-0x000000000046118E-mapping.dmp
  • memory/1632-61-0x0000000000400000-0x0000000000466000-memory.dmp
    Filesize

    408KB

  • memory/1632-63-0x0000000000400000-0x0000000000466000-memory.dmp
    Filesize

    408KB

  • memory/1632-64-0x0000000076721000-0x0000000076723000-memory.dmp
    Filesize

    8KB

  • memory/1632-65-0x0000000074A50000-0x0000000074FFB000-memory.dmp
    Filesize

    5.7MB

  • memory/2028-55-0x0000000000000000-mapping.dmp