Analysis

  • max time kernel
    120s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    22-05-2024 18:40

General

  • Target

    948209184.xlam

  • Size

    14KB

  • MD5

    3d44b278e13e6d979280c8efa3d9719d

  • SHA1

    ed7e50f888ff7b231be601dcd03f8165f671b674

  • SHA256

    dfe0e6b11dab62c713e379c0455b008c50e539eb175b3e60871ecbf8fe81b169

  • SHA512

    f272a9c7bbd748526cb75ffc1e52c7481f47558f10ce2a5c5677e1aa7154038b01288a32a156cfe7b64f508800c4ae39b8f35202dd741bd4dcbba5b88548619c

  • SSDEEP

    384:24rYeXIZwO3vs73sXKa+fDF8tcazB9o53:VrXIXaUCDCcato

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Blocklisted process makes network request 6 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 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.

  • 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 4 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\948209184.xlam
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:2040
  • 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:2644
    • C:\Users\Admin\AppData\Local\Temp\zwQUshujsi.exe
      "C:\Users\Admin\AppData\Local\Temp\zwQUshujsi.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:2136
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "C:\Users\Admin\AppData\Local\Temp\zwQUshujsi.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2236

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

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

    Filesize

    344B

    MD5

    ab303b96df5fa83f7834e70fedd9b4e0

    SHA1

    a517c35ee23cf086e1edb5a04f6cb0dcd83d575d

    SHA256

    8e88a93293ab613ddf9d12c8fc8a8e519c372ac7f51f02d0a7de465882ad316f

    SHA512

    d146f6c85ba3850373589683e7cac9780333cdfb02d2ca8a1a2d3bb7d8cf5a828aa32d584974d32a9ee7875e623acbdca758aff9f8684590c42dd121cbda8c2f

  • C:\Users\Admin\AppData\Local\Temp\Cab167F.tmp

    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar17BE.tmp

    Filesize

    177KB

    MD5

    435a9ac180383f9fa094131b173a2f7b

    SHA1

    76944ea657a9db94f9a4bef38f88c46ed4166983

    SHA256

    67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

    SHA512

    1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

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

    Filesize

    1024KB

    MD5

    d90f41701d76908bf5a1519fe7b99f23

    SHA1

    649b924f2bdadee132be65d7eb76f119857cf630

    SHA256

    817f1019ac6cd336a412e304016e6538fd8c3894121bd61340639b240f07c451

    SHA512

    7cabb7a924a7343d3f26442174474b6829041226e7e9ce5c91086be682e692a7ae375c2cab8dbdf53ef6c63d953717c3319bc678d82dcc3ea5e88b7da18044f8

  • memory/2040-1-0x000000007277D000-0x0000000072788000-memory.dmp

    Filesize

    44KB

  • memory/2040-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2040-140-0x000000007277D000-0x0000000072788000-memory.dmp

    Filesize

    44KB

  • memory/2040-142-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/2040-143-0x000000007277D000-0x0000000072788000-memory.dmp

    Filesize

    44KB

  • memory/2236-137-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2236-139-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/2236-138-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB