Analysis

  • max time kernel
    80s
  • max time network
    70s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 07:34

General

  • Target

    CARPETA_.EXE.exe

  • Size

    834KB

  • MD5

    97d2766b203cad5490aeae4049823b5c

  • SHA1

    a2559089ca598289ad964bb3aa63456c0ab8b4fd

  • SHA256

    31f9e178c2015a364ea2035c77eb27f1b40165648900f824945d548e93885716

  • SHA512

    0733d5e248d71e1c385c7c08b83474a90112c0326d3dcadb8d7b68d3c0eaa33c294012e4462fc37a875f3cd64ae727ba558fd3ebed132784525b8802eed1b65c

  • SSDEEP

    12288:Ly2OoPnK3jbgtwPi5CdZV7e8M4iULTXHYHmBE6mHtP38M:Qa/

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5678941731:AAHuT6ry1HeTpvo1csjgif_TAWF-WtH0QZk/

Signatures

  • AgentTesla

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

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • 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 Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\CARPETA_.EXE.exe
    "C:\Users\Admin\AppData\Local\Temp\CARPETA_.EXE.exe"
    1⤵
    • Modifies system executable filetype association
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:784
    • C:\Users\Admin\AppData\Local\Temp\3582-490\CARPETA_.EXE.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\CARPETA_.EXE.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1984
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regsvcs.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regsvcs.exe"
        3⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:980

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\CARPETA_.EXE.exe

    Filesize

    793KB

    MD5

    f7f52232331e61de9f280a6c736708ea

    SHA1

    38cb7562f5e5c68e60fbc2858f082fedabc6c6d3

    SHA256

    8a0c695cf50406eaeb95afc957f838f79eeab2324f73656adcbcf1ff51a2819d

    SHA512

    71b954c08e141717ecbb428abf41e07039fbe059fffc47e5783f3009e2c8e431c693437db9a3839158cbc29bec25674738825018d25d873d84732ceaa0551dd8

  • C:\Users\Admin\AppData\Local\Temp\3582-490\CARPETA_.EXE.exe

    Filesize

    793KB

    MD5

    f7f52232331e61de9f280a6c736708ea

    SHA1

    38cb7562f5e5c68e60fbc2858f082fedabc6c6d3

    SHA256

    8a0c695cf50406eaeb95afc957f838f79eeab2324f73656adcbcf1ff51a2819d

    SHA512

    71b954c08e141717ecbb428abf41e07039fbe059fffc47e5783f3009e2c8e431c693437db9a3839158cbc29bec25674738825018d25d873d84732ceaa0551dd8

  • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • \Users\Admin\AppData\Local\Temp\3582-490\CARPETA_.EXE.exe

    Filesize

    793KB

    MD5

    f7f52232331e61de9f280a6c736708ea

    SHA1

    38cb7562f5e5c68e60fbc2858f082fedabc6c6d3

    SHA256

    8a0c695cf50406eaeb95afc957f838f79eeab2324f73656adcbcf1ff51a2819d

    SHA512

    71b954c08e141717ecbb428abf41e07039fbe059fffc47e5783f3009e2c8e431c693437db9a3839158cbc29bec25674738825018d25d873d84732ceaa0551dd8

  • memory/784-54-0x0000000075FC1000-0x0000000075FC3000-memory.dmp

    Filesize

    8KB

  • memory/980-62-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/980-61-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/980-64-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/980-65-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/980-66-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/980-67-0x0000000000435ACE-mapping.dmp

  • memory/980-69-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/980-71-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/1984-60-0x0000000000640000-0x000000000064A000-memory.dmp

    Filesize

    40KB

  • memory/1984-59-0x000000013FF40000-0x000000014000A000-memory.dmp

    Filesize

    808KB

  • memory/1984-56-0x0000000000000000-mapping.dmp