Analysis

  • max time kernel
    123s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    27-07-2021 19:38

General

  • Target

    #$$$!1weF5(1).exe

  • Size

    662KB

  • MD5

    65c520abdacd8aacdb7f93ed7b00d716

  • SHA1

    c5ca68ab7ce2e46e0b924acb0365af5f4935847d

  • SHA256

    b47c11b0e48a16e4e1d861dcb524bf3bcabfe1481853b7d94fb738f635d1d5aa

  • SHA512

    f369b973656103610c08a054ae50a3ddcccc9aa64acfc9fec9d6e06b5f6cd3d5e3ca2d7b62eda5838452efd0bed8f25f8a9cb9fe430c9ec39749181e24be93ed

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1815802853:AAFwTZ6mRU-UOmcTcCR8glZAAkNmzHpMkL8/sendDocument

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 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.

  • 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). Likely ransomware behaviour.

  • Runs ping.exe 1 TTPs 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\#$$$!1weF5(1).exe
    "C:\Users\Admin\AppData\Local\Temp\#$$$!1weF5(1).exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1084
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" ping gooogle.com
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1536
      • C:\Windows\SysWOW64\PING.EXE
        "C:\Windows\system32\PING.EXE" gooogle.com
        3⤵
        • Runs ping.exe
        PID:752
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" ping gooogle.com
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:516
      • C:\Windows\SysWOW64\PING.EXE
        "C:\Windows\system32\PING.EXE" gooogle.com
        3⤵
        • Runs ping.exe
        PID:240
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" ping gooogle.com
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:436
      • C:\Windows\SysWOW64\PING.EXE
        "C:\Windows\system32\PING.EXE" gooogle.com
        3⤵
        • Runs ping.exe
        PID:956
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" ping gooogle.com
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1768
      • C:\Windows\SysWOW64\PING.EXE
        "C:\Windows\system32\PING.EXE" gooogle.com
        3⤵
        • Runs ping.exe
        PID:992
    • C:\Users\Admin\AppData\Local\Temp\#$$$!1weF5(1).exe
      C:\Users\Admin\AppData\Local\Temp\#$$$!1weF5(1).exe
      2⤵
        PID:1468
      • C:\Users\Admin\AppData\Local\Temp\#$$$!1weF5(1).exe
        C:\Users\Admin\AppData\Local\Temp\#$$$!1weF5(1).exe
        2⤵
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:752

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    3
    T1081

    Discovery

    System Information Discovery

    1
    T1082

    Remote System Discovery

    1
    T1018

    Collection

    Data from Local System

    3
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
      MD5

      b6484cc43fec67e59368ad0055d930e7

      SHA1

      1598fc06c383343a6c72a76d5d176d730bd6d3ff

      SHA256

      9604cb1d395196dfbe4b6292f709454fcd6299de7ec720a196822ed9b431d9d6

      SHA512

      1a8eb17aeeeebecdfd6a52f46d4a10ee37f8887aa6f83ef45b43f1c87654572bd2ae9b083ce7d95dd73689ee5ca5d632671630a5b2da650942c5d3661bec24de

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
      MD5

      b6484cc43fec67e59368ad0055d930e7

      SHA1

      1598fc06c383343a6c72a76d5d176d730bd6d3ff

      SHA256

      9604cb1d395196dfbe4b6292f709454fcd6299de7ec720a196822ed9b431d9d6

      SHA512

      1a8eb17aeeeebecdfd6a52f46d4a10ee37f8887aa6f83ef45b43f1c87654572bd2ae9b083ce7d95dd73689ee5ca5d632671630a5b2da650942c5d3661bec24de

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
      MD5

      b6484cc43fec67e59368ad0055d930e7

      SHA1

      1598fc06c383343a6c72a76d5d176d730bd6d3ff

      SHA256

      9604cb1d395196dfbe4b6292f709454fcd6299de7ec720a196822ed9b431d9d6

      SHA512

      1a8eb17aeeeebecdfd6a52f46d4a10ee37f8887aa6f83ef45b43f1c87654572bd2ae9b083ce7d95dd73689ee5ca5d632671630a5b2da650942c5d3661bec24de

    • \??\PIPE\srvsvc
      MD5

      d41d8cd98f00b204e9800998ecf8427e

      SHA1

      da39a3ee5e6b4b0d3255bfef95601890afd80709

      SHA256

      e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

      SHA512

      cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

    • memory/240-80-0x0000000000000000-mapping.dmp
    • memory/436-81-0x0000000000000000-mapping.dmp
    • memory/436-84-0x0000000000FB0000-0x0000000000FB1000-memory.dmp
      Filesize

      4KB

    • memory/436-89-0x0000000004972000-0x0000000004973000-memory.dmp
      Filesize

      4KB

    • memory/436-88-0x0000000004970000-0x0000000004971000-memory.dmp
      Filesize

      4KB

    • memory/436-87-0x0000000005400000-0x0000000005401000-memory.dmp
      Filesize

      4KB

    • memory/436-85-0x00000000049B0000-0x00000000049B1000-memory.dmp
      Filesize

      4KB

    • memory/516-76-0x0000000004950000-0x0000000004951000-memory.dmp
      Filesize

      4KB

    • memory/516-77-0x0000000002180000-0x0000000002DCA000-memory.dmp
      Filesize

      12.3MB

    • memory/516-72-0x0000000000000000-mapping.dmp
    • memory/516-75-0x0000000002450000-0x0000000002451000-memory.dmp
      Filesize

      4KB

    • memory/516-79-0x0000000005300000-0x0000000005301000-memory.dmp
      Filesize

      4KB

    • memory/516-78-0x00000000025D0000-0x00000000025D1000-memory.dmp
      Filesize

      4KB

    • memory/752-108-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/752-113-0x0000000004A60000-0x0000000004A61000-memory.dmp
      Filesize

      4KB

    • memory/752-114-0x0000000004A61000-0x0000000004A62000-memory.dmp
      Filesize

      4KB

    • memory/752-109-0x000000000043773E-mapping.dmp
    • memory/752-71-0x0000000000000000-mapping.dmp
    • memory/752-110-0x0000000000400000-0x000000000043C000-memory.dmp
      Filesize

      240KB

    • memory/956-90-0x0000000000000000-mapping.dmp
    • memory/992-101-0x0000000000000000-mapping.dmp
    • memory/1084-112-0x0000000004846000-0x0000000004847000-memory.dmp
      Filesize

      4KB

    • memory/1084-107-0x0000000007EE0000-0x0000000007F4B000-memory.dmp
      Filesize

      428KB

    • memory/1084-59-0x0000000000C70000-0x0000000000C71000-memory.dmp
      Filesize

      4KB

    • memory/1084-102-0x00000000047D0000-0x0000000004825000-memory.dmp
      Filesize

      340KB

    • memory/1084-62-0x0000000004835000-0x0000000004846000-memory.dmp
      Filesize

      68KB

    • memory/1084-61-0x0000000004830000-0x0000000004831000-memory.dmp
      Filesize

      4KB

    • memory/1536-64-0x0000000075A31000-0x0000000075A33000-memory.dmp
      Filesize

      8KB

    • memory/1536-67-0x0000000004900000-0x0000000004901000-memory.dmp
      Filesize

      4KB

    • memory/1536-68-0x0000000004902000-0x0000000004903000-memory.dmp
      Filesize

      4KB

    • memory/1536-69-0x0000000002600000-0x0000000002601000-memory.dmp
      Filesize

      4KB

    • memory/1536-70-0x0000000005240000-0x0000000005241000-memory.dmp
      Filesize

      4KB

    • memory/1536-63-0x0000000000000000-mapping.dmp
    • memory/1536-66-0x0000000004940000-0x0000000004941000-memory.dmp
      Filesize

      4KB

    • memory/1536-65-0x0000000002090000-0x0000000002091000-memory.dmp
      Filesize

      4KB

    • memory/1768-99-0x00000000048C2000-0x00000000048C3000-memory.dmp
      Filesize

      4KB

    • memory/1768-98-0x00000000048C0000-0x00000000048C1000-memory.dmp
      Filesize

      4KB

    • memory/1768-91-0x0000000000000000-mapping.dmp