Analysis

  • max time kernel
    118s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    06/10/2023, 14:41

General

  • Target

    NEAS.7e5e3c49e0bcb2e16b86e870f591feca75b0d7007ed5851ecdfb70fa3d06976cexe_JC.exe

  • Size

    678KB

  • MD5

    db82b1e54d378158c2873fd90f30880a

  • SHA1

    75d28d710180b899847f35de4857952cde5d97ba

  • SHA256

    7e5e3c49e0bcb2e16b86e870f591feca75b0d7007ed5851ecdfb70fa3d06976c

  • SHA512

    f9c8402cc418c9f9dbfec2b4ae6d5e583e2f89b4a663a079e2c2753b75cd54b553c1fb01b2e28f46661d69e7ba12e6f6b62edc0750bb92e6e9d14b7e2b5b84b8

  • SSDEEP

    12288:2iMl/jysa+SRohg0KbwQZvwFRQkFvUPaIONAqptrBm1k5Bfa4SliEv3:kLysa+SKeBnMGkFmaISjI1kjfuBv

Malware Config

Extracted

Family

agenttesla

C2

https://discordapp.com/api/webhooks/1151596988136181840/QdgulOKX9Onw_VaSQk6b3c5Sm7_Mt-0_huxqLUgO5ybBxQL_jiC6-2Afk2vAsJOZSANp

Signatures

  • AgentTesla

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

  • 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 3 IoCs
  • Looks up external IP address via web service 2 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).

  • 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 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NEAS.7e5e3c49e0bcb2e16b86e870f591feca75b0d7007ed5851ecdfb70fa3d06976cexe_JC.exe
    "C:\Users\Admin\AppData\Local\Temp\NEAS.7e5e3c49e0bcb2e16b86e870f591feca75b0d7007ed5851ecdfb70fa3d06976cexe_JC.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2228
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\TnYaBdvu.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2540
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TnYaBdvu" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEA4F.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2536
    • C:\Users\Admin\AppData\Local\Temp\NEAS.7e5e3c49e0bcb2e16b86e870f591feca75b0d7007ed5851ecdfb70fa3d06976cexe_JC.exe
      "C:\Users\Admin\AppData\Local\Temp\NEAS.7e5e3c49e0bcb2e16b86e870f591feca75b0d7007ed5851ecdfb70fa3d06976cexe_JC.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2980

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab315F.tmp

    Filesize

    61KB

    MD5

    f3441b8572aae8801c04f3060b550443

    SHA1

    4ef0a35436125d6821831ef36c28ffaf196cda15

    SHA256

    6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

    SHA512

    5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

  • C:\Users\Admin\AppData\Local\Temp\Tar31A0.tmp

    Filesize

    163KB

    MD5

    9441737383d21192400eca82fda910ec

    SHA1

    725e0d606a4fc9ba44aa8ffde65bed15e65367e4

    SHA256

    bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5

    SHA512

    7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

  • C:\Users\Admin\AppData\Local\Temp\tmpEA4F.tmp

    Filesize

    1KB

    MD5

    a32b3d84a18cfdd2e833c9133e5256eb

    SHA1

    c502148b98e7cc90a1fd1ff97cb4c802cf8ccb1e

    SHA256

    d5e688f3f46d2cdbeb66a872cb76a6b0fbb70663fd7ffc9720b3288b090c3af1

    SHA512

    a7d7543052269dc4659eb30fc57b0e04947451a0d322fec2a26ff0b3e06cd43548698bd3606ab73ade47fec98715352844ecb4276dfbe4dba718194b9ea9857a

  • memory/2228-4-0x0000000074750000-0x0000000074E3E000-memory.dmp

    Filesize

    6.9MB

  • memory/2228-1-0x0000000074750000-0x0000000074E3E000-memory.dmp

    Filesize

    6.9MB

  • memory/2228-5-0x00000000049E0000-0x0000000004A20000-memory.dmp

    Filesize

    256KB

  • memory/2228-6-0x0000000000290000-0x00000000002A0000-memory.dmp

    Filesize

    64KB

  • memory/2228-7-0x0000000007D10000-0x0000000007D8E000-memory.dmp

    Filesize

    504KB

  • memory/2228-3-0x00000000003B0000-0x00000000003C8000-memory.dmp

    Filesize

    96KB

  • memory/2228-2-0x00000000049E0000-0x0000000004A20000-memory.dmp

    Filesize

    256KB

  • memory/2228-28-0x0000000074750000-0x0000000074E3E000-memory.dmp

    Filesize

    6.9MB

  • memory/2228-0-0x00000000010C0000-0x0000000001170000-memory.dmp

    Filesize

    704KB

  • memory/2540-32-0x00000000026F0000-0x0000000002730000-memory.dmp

    Filesize

    256KB

  • memory/2540-35-0x00000000026F0000-0x0000000002730000-memory.dmp

    Filesize

    256KB

  • memory/2540-36-0x000000006ED30000-0x000000006F2DB000-memory.dmp

    Filesize

    5.7MB

  • memory/2540-34-0x00000000026F0000-0x0000000002730000-memory.dmp

    Filesize

    256KB

  • memory/2540-30-0x000000006ED30000-0x000000006F2DB000-memory.dmp

    Filesize

    5.7MB

  • memory/2540-29-0x000000006ED30000-0x000000006F2DB000-memory.dmp

    Filesize

    5.7MB

  • memory/2980-23-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2980-27-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2980-31-0x0000000074750000-0x0000000074E3E000-memory.dmp

    Filesize

    6.9MB

  • memory/2980-33-0x0000000004930000-0x0000000004970000-memory.dmp

    Filesize

    256KB

  • memory/2980-25-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2980-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2980-19-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2980-17-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2980-15-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2980-16-0x0000000000400000-0x0000000000444000-memory.dmp

    Filesize

    272KB

  • memory/2980-71-0x0000000074750000-0x0000000074E3E000-memory.dmp

    Filesize

    6.9MB

  • memory/2980-72-0x0000000004930000-0x0000000004970000-memory.dmp

    Filesize

    256KB