Analysis

  • max time kernel
    135s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 13:38

General

  • Target

    RFQ20221123.rtf

  • Size

    25KB

  • MD5

    3f6c7ad16cf47199a9dfbe2944554ef4

  • SHA1

    eae5ac08cc4cb0da9561dde7e64d323e83b20f7b

  • SHA256

    c2d3f8d87feaec6e82fbce209dd28929b7567ba62713522dd9b0d149b09993a7

  • SHA512

    845be468e7a9ad292757627bda34efa636da5c45f4d28264c44d18efd82e78ea71b419873b93e6bec5e6893eccc3645e2cea7c34cda5eccf55cc26e4be19f3e0

  • SSDEEP

    768:TFx0XaIsnPRIa4fwJMEgyQapsGdcf4A/QyoVZIkvvE:Tf0Xvx3EMrb3G+AA/Q3wkHE

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 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 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 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\RFQ20221123.rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1652
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1076
    • 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:944
      • C:\Users\Admin\AppData\Roaming\coachrci4782.exe
        "C:\Users\Admin\AppData\Roaming\coachrci4782.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1756
        • C:\Users\Admin\AppData\Roaming\coachrci4782.exe
          "C:\Users\Admin\AppData\Roaming\coachrci4782.exe"
          3⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • outlook_office_path
          • outlook_win_path
          PID:908

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\coachrci4782.exe

      Filesize

      999KB

      MD5

      1f908f02e107b7c9b302cefdbce9e5ba

      SHA1

      c11e917f6290a3dfd90e6d7b2542de45d282adc8

      SHA256

      2e46a9df0d410d5cbe7c5bed967108f6dc846b01a25863be99e30b2729a6fad9

      SHA512

      181747b9e2f33cd0058614149149ca18be08fec9253f7662cae26a82fdfe625295277138c985b13d9654f76b41029e21ffb68c0d13878b69cad4e5ec2febb723

    • C:\Users\Admin\AppData\Roaming\coachrci4782.exe

      Filesize

      999KB

      MD5

      1f908f02e107b7c9b302cefdbce9e5ba

      SHA1

      c11e917f6290a3dfd90e6d7b2542de45d282adc8

      SHA256

      2e46a9df0d410d5cbe7c5bed967108f6dc846b01a25863be99e30b2729a6fad9

      SHA512

      181747b9e2f33cd0058614149149ca18be08fec9253f7662cae26a82fdfe625295277138c985b13d9654f76b41029e21ffb68c0d13878b69cad4e5ec2febb723

    • C:\Users\Admin\AppData\Roaming\coachrci4782.exe

      Filesize

      999KB

      MD5

      1f908f02e107b7c9b302cefdbce9e5ba

      SHA1

      c11e917f6290a3dfd90e6d7b2542de45d282adc8

      SHA256

      2e46a9df0d410d5cbe7c5bed967108f6dc846b01a25863be99e30b2729a6fad9

      SHA512

      181747b9e2f33cd0058614149149ca18be08fec9253f7662cae26a82fdfe625295277138c985b13d9654f76b41029e21ffb68c0d13878b69cad4e5ec2febb723

    • \Users\Admin\AppData\Roaming\coachrci4782.exe

      Filesize

      999KB

      MD5

      1f908f02e107b7c9b302cefdbce9e5ba

      SHA1

      c11e917f6290a3dfd90e6d7b2542de45d282adc8

      SHA256

      2e46a9df0d410d5cbe7c5bed967108f6dc846b01a25863be99e30b2729a6fad9

      SHA512

      181747b9e2f33cd0058614149149ca18be08fec9253f7662cae26a82fdfe625295277138c985b13d9654f76b41029e21ffb68c0d13878b69cad4e5ec2febb723

    • memory/908-78-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/908-73-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/908-84-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/908-82-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/908-79-0x0000000000437CBE-mapping.dmp

    • memory/908-76-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/908-77-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/908-74-0x0000000000400000-0x000000000043C000-memory.dmp

      Filesize

      240KB

    • memory/1076-68-0x0000000000000000-mapping.dmp

    • memory/1076-69-0x000007FEFB761000-0x000007FEFB763000-memory.dmp

      Filesize

      8KB

    • memory/1652-66-0x0000000070B1D000-0x0000000070B28000-memory.dmp

      Filesize

      44KB

    • memory/1652-57-0x0000000074C91000-0x0000000074C93000-memory.dmp

      Filesize

      8KB

    • memory/1652-87-0x0000000070B1D000-0x0000000070B28000-memory.dmp

      Filesize

      44KB

    • memory/1652-86-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1652-55-0x000000006FB31000-0x000000006FB33000-memory.dmp

      Filesize

      8KB

    • memory/1652-58-0x0000000070B1D000-0x0000000070B28000-memory.dmp

      Filesize

      44KB

    • memory/1652-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1652-54-0x00000000720B1000-0x00000000720B4000-memory.dmp

      Filesize

      12KB

    • memory/1756-64-0x0000000000CC0000-0x0000000000DC0000-memory.dmp

      Filesize

      1024KB

    • memory/1756-67-0x00000000003F0000-0x0000000000408000-memory.dmp

      Filesize

      96KB

    • memory/1756-71-0x0000000005780000-0x0000000005832000-memory.dmp

      Filesize

      712KB

    • memory/1756-61-0x0000000000000000-mapping.dmp

    • memory/1756-70-0x0000000000390000-0x000000000039C000-memory.dmp

      Filesize

      48KB

    • memory/1756-72-0x0000000005080000-0x00000000050FC000-memory.dmp

      Filesize

      496KB