Analysis

  • max time kernel
    139s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 03:06

General

  • Target

    DHL_AWB #1008936572891_pdf.exe

  • Size

    1.5MB

  • MD5

    183595e45c54758cd9adaeb3afe302e9

  • SHA1

    aa4e83e6080009a5aa03e29f74ed6a5f0a0b3f3a

  • SHA256

    b46bd25fca309781558509bdb4f408b085d83c74e71adc5de4eeb349bc8c4c7a

  • SHA512

    01b868664c430433720a10929aef909355a5487b6cbc2f21d27ac143a84bf440235585934ad50bc82e0ff1c7269fcc65fb89944a7d5b0c2e0719352b1c89211c

Malware Config

Extracted

Family

matiex

C2

https://api.telegram.org/bot1328029504:AAGKFzQ1tJdWqJzQg7lW0DK-JgG0_8hFEEk/sendMessage?chat_id=1072388187

Signatures

  • AgentTesla

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

  • Matiex

    Matiex is a keylogger and infostealer first seen in July 2020.

  • Matiex Main Payload 10 IoCs
  • AgentTesla Payload 7 IoCs
  • Executes dropped EXE 2 IoCs
  • Drops startup file 1 IoCs
  • Loads dropped DLL 8 IoCs
  • 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 6 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 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). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DHL_AWB #1008936572891_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL_AWB #1008936572891_pdf.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1952
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dup.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dup.exe"
      2⤵
      • Executes dropped EXE
      • Accesses Microsoft Outlook profiles
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2008
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2008 -s 1784
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:1644
    • C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
      "C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:776

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
    Filesize

    63KB

    MD5

    b58b926c3574d28d5b7fdd2ca3ec30d5

    SHA1

    d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

    SHA256

    6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

    SHA512

    b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

  • C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
    Filesize

    63KB

    MD5

    b58b926c3574d28d5b7fdd2ca3ec30d5

    SHA1

    d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

    SHA256

    6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

    SHA512

    b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dup.exe
    Filesize

    437KB

    MD5

    a00d79da5aabd341cbec7060bcf9ecd2

    SHA1

    c889f6bf15609d30148784f3b588fe2dc2b27aaf

    SHA256

    2c7a809f39f6e82b2d2aec711f6a994a39d9868ecca6d522ed1bc6b62e87c4a1

    SHA512

    edcf708321b16d359e1bbaeb6ef92589b49722f711dfb0a27e978bd3731b202686a057dfd18ec44ad5f870c00a495b5f5583f3e0227f86d17baf8e2f6956ffb3

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dup.exe
    Filesize

    437KB

    MD5

    a00d79da5aabd341cbec7060bcf9ecd2

    SHA1

    c889f6bf15609d30148784f3b588fe2dc2b27aaf

    SHA256

    2c7a809f39f6e82b2d2aec711f6a994a39d9868ecca6d522ed1bc6b62e87c4a1

    SHA512

    edcf708321b16d359e1bbaeb6ef92589b49722f711dfb0a27e978bd3731b202686a057dfd18ec44ad5f870c00a495b5f5583f3e0227f86d17baf8e2f6956ffb3

  • \Users\Admin\AppData\Local\Temp\RegAsm.exe
    Filesize

    63KB

    MD5

    b58b926c3574d28d5b7fdd2ca3ec30d5

    SHA1

    d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

    SHA256

    6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

    SHA512

    b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

  • \Users\Admin\AppData\Local\Temp\RegAsm.exe
    Filesize

    63KB

    MD5

    b58b926c3574d28d5b7fdd2ca3ec30d5

    SHA1

    d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

    SHA256

    6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

    SHA512

    b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dup.exe
    Filesize

    437KB

    MD5

    a00d79da5aabd341cbec7060bcf9ecd2

    SHA1

    c889f6bf15609d30148784f3b588fe2dc2b27aaf

    SHA256

    2c7a809f39f6e82b2d2aec711f6a994a39d9868ecca6d522ed1bc6b62e87c4a1

    SHA512

    edcf708321b16d359e1bbaeb6ef92589b49722f711dfb0a27e978bd3731b202686a057dfd18ec44ad5f870c00a495b5f5583f3e0227f86d17baf8e2f6956ffb3

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dup.exe
    Filesize

    437KB

    MD5

    a00d79da5aabd341cbec7060bcf9ecd2

    SHA1

    c889f6bf15609d30148784f3b588fe2dc2b27aaf

    SHA256

    2c7a809f39f6e82b2d2aec711f6a994a39d9868ecca6d522ed1bc6b62e87c4a1

    SHA512

    edcf708321b16d359e1bbaeb6ef92589b49722f711dfb0a27e978bd3731b202686a057dfd18ec44ad5f870c00a495b5f5583f3e0227f86d17baf8e2f6956ffb3

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dup.exe
    Filesize

    437KB

    MD5

    a00d79da5aabd341cbec7060bcf9ecd2

    SHA1

    c889f6bf15609d30148784f3b588fe2dc2b27aaf

    SHA256

    2c7a809f39f6e82b2d2aec711f6a994a39d9868ecca6d522ed1bc6b62e87c4a1

    SHA512

    edcf708321b16d359e1bbaeb6ef92589b49722f711dfb0a27e978bd3731b202686a057dfd18ec44ad5f870c00a495b5f5583f3e0227f86d17baf8e2f6956ffb3

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dup.exe
    Filesize

    437KB

    MD5

    a00d79da5aabd341cbec7060bcf9ecd2

    SHA1

    c889f6bf15609d30148784f3b588fe2dc2b27aaf

    SHA256

    2c7a809f39f6e82b2d2aec711f6a994a39d9868ecca6d522ed1bc6b62e87c4a1

    SHA512

    edcf708321b16d359e1bbaeb6ef92589b49722f711dfb0a27e978bd3731b202686a057dfd18ec44ad5f870c00a495b5f5583f3e0227f86d17baf8e2f6956ffb3

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dup.exe
    Filesize

    437KB

    MD5

    a00d79da5aabd341cbec7060bcf9ecd2

    SHA1

    c889f6bf15609d30148784f3b588fe2dc2b27aaf

    SHA256

    2c7a809f39f6e82b2d2aec711f6a994a39d9868ecca6d522ed1bc6b62e87c4a1

    SHA512

    edcf708321b16d359e1bbaeb6ef92589b49722f711dfb0a27e978bd3731b202686a057dfd18ec44ad5f870c00a495b5f5583f3e0227f86d17baf8e2f6956ffb3

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dup.exe
    Filesize

    437KB

    MD5

    a00d79da5aabd341cbec7060bcf9ecd2

    SHA1

    c889f6bf15609d30148784f3b588fe2dc2b27aaf

    SHA256

    2c7a809f39f6e82b2d2aec711f6a994a39d9868ecca6d522ed1bc6b62e87c4a1

    SHA512

    edcf708321b16d359e1bbaeb6ef92589b49722f711dfb0a27e978bd3731b202686a057dfd18ec44ad5f870c00a495b5f5583f3e0227f86d17baf8e2f6956ffb3

  • memory/776-68-0x0000000000400000-0x000000000045A000-memory.dmp
    Filesize

    360KB

  • memory/776-70-0x0000000000400000-0x000000000045A000-memory.dmp
    Filesize

    360KB

  • memory/776-71-0x00000000004549AE-mapping.dmp
  • memory/776-69-0x0000000000400000-0x000000000045A000-memory.dmp
    Filesize

    360KB

  • memory/776-74-0x0000000000400000-0x000000000045A000-memory.dmp
    Filesize

    360KB

  • memory/776-76-0x0000000000400000-0x000000000045A000-memory.dmp
    Filesize

    360KB

  • memory/776-66-0x0000000000400000-0x000000000045A000-memory.dmp
    Filesize

    360KB

  • memory/776-65-0x0000000000400000-0x000000000045A000-memory.dmp
    Filesize

    360KB

  • memory/1644-80-0x0000000000000000-mapping.dmp
  • memory/1952-54-0x0000000000A30000-0x0000000000BB4000-memory.dmp
    Filesize

    1.5MB

  • memory/1952-63-0x0000000002220000-0x000000000222A000-memory.dmp
    Filesize

    40KB

  • memory/1952-56-0x0000000000430000-0x0000000000444000-memory.dmp
    Filesize

    80KB

  • memory/1952-55-0x0000000075801000-0x0000000075803000-memory.dmp
    Filesize

    8KB

  • memory/2008-61-0x0000000000E10000-0x0000000000E84000-memory.dmp
    Filesize

    464KB

  • memory/2008-58-0x0000000000000000-mapping.dmp