Analysis

  • max time kernel
    122s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    22-05-2024 01:10

General

  • Target

    c79ea1eb600a853230a52e885317052da2f060c1af6db85bee4e93543933267c.xlsx

  • Size

    10KB

  • MD5

    334ee6dea87c01c0d4b1804e3f7eed3b

  • SHA1

    762d2482465dd7a09b97d564e647f5bfd79c17f0

  • SHA256

    c79ea1eb600a853230a52e885317052da2f060c1af6db85bee4e93543933267c

  • SHA512

    6b259f01dee9c933e9d61e6577df149eea3556baad26b47e984182eee52345b14925ad22e59e45617e0fab800e93d23828da7e75195a5614f850bd883ee7a6e8

  • SSDEEP

    192:UeS/0kJGDkM8GAtgBRol+Au/ClUhjRyQsC0fW/jcV:UeI0kMkM8Btgva+seyhC0fOjcV

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.grupovamex.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    tTgUWMBntHIE

Signatures

  • AgentTesla

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

  • Blocklisted process makes network request 7 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\c79ea1eb600a853230a52e885317052da2f060c1af6db85bee4e93543933267c.xlsx
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:2012
  • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
    "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
    1⤵
    • Blocklisted process makes network request
    • Loads dropped DLL
    • Launches Equation Editor
    • Suspicious use of WriteProcessMemory
    PID:1168
    • C:\Users\Admin\AppData\Local\Temp\zwqosdWD.exe
      "C:\Users\Admin\AppData\Local\Temp\zwqosdWD.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:812
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "C:\Users\Admin\AppData\Local\Temp\zwqosdWD.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2348

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

  • C:\Users\Admin\AppData\Local\Temp\Cab3786.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar38A6.tmp

    Filesize

    177KB

    MD5

    435a9ac180383f9fa094131b173a2f7b

    SHA1

    76944ea657a9db94f9a4bef38f88c46ed4166983

    SHA256

    67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

    SHA512

    1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

  • C:\Users\Admin\AppData\Local\Temp\zwqosdWD.exe

    Filesize

    1012KB

    MD5

    bcdda917607e4c698f148d10466c3b80

    SHA1

    f684cb3a9c045e50fc07ce632e5f91b6889ae22f

    SHA256

    d08c33466a8c7a6c504e1ba509278bfebf111102d5a3bfd9b56b27b3530ffc2d

    SHA512

    2366111476e30bb2c7acf9f43b78b6155e50e9462fd83ad1a7a45cf027457b2f0f5cbf47f16043cdd2dd4d90090bbd2a63f25f98d7d3fc89688578dc4b29fb9a

  • memory/2012-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2012-1-0x0000000072BDD000-0x0000000072BE8000-memory.dmp

    Filesize

    44KB

  • memory/2012-126-0x0000000072BDD000-0x0000000072BE8000-memory.dmp

    Filesize

    44KB

  • memory/2012-128-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2012-129-0x0000000072BDD000-0x0000000072BE8000-memory.dmp

    Filesize

    44KB

  • memory/2348-125-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2348-124-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2348-123-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB