Analysis

  • max time kernel
    142s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20231025-en
  • resource tags

    arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system
  • submitted
    07-12-2023 01:10

General

  • Target

    f35031dad7ad42ea6ea2fa3759b9d30f25d2f2c538bb41b7a141882bccad7016.exe

  • Size

    588KB

  • MD5

    1798698abf363fd83df2ee7c88591afd

  • SHA1

    c8fb4e10db9391ba47c48cc290b48b79d0913b32

  • SHA256

    f35031dad7ad42ea6ea2fa3759b9d30f25d2f2c538bb41b7a141882bccad7016

  • SHA512

    5a980e86639fa27cd98edfdd484d2fde03b9ecaf773ca95daa8c708bd246cead8e560222bd2322e1ced0d632dd3c805765d0cee0f646d4e72037dffc4a1d8a8a

  • SSDEEP

    12288:GxPgUrdp0oGxDlerc40j5m2AzvccCFGWFOwViPIRO:OvuosW0N3Y5YNU9

Malware Config

Signatures

  • AgentTesla

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

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • 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.

  • Adds Run key to start application 2 TTPs 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f35031dad7ad42ea6ea2fa3759b9d30f25d2f2c538bb41b7a141882bccad7016.exe
    "C:\Users\Admin\AppData\Local\Temp\f35031dad7ad42ea6ea2fa3759b9d30f25d2f2c538bb41b7a141882bccad7016.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1976
    • C:\Users\Admin\AppData\Local\Temp\lnpakna.exe
      "C:\Users\Admin\AppData\Local\Temp\lnpakna.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1692
      • C:\Users\Admin\AppData\Local\Temp\lnpakna.exe
        "C:\Users\Admin\AppData\Local\Temp\lnpakna.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2156

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\gxukhxxlqwb.lhh

    Filesize

    333KB

    MD5

    94deda5a2638f5952a2ce0c31ad86840

    SHA1

    0f47f17808ec1e3e21082f0e119fd56c44025b5c

    SHA256

    3833aed41a086cd57fc8d9df0db5541da24dbd3c0369d438f08fc0315076be6d

    SHA512

    b215079549e65d8446f16587bafaa596a7d2333edaf62ddb89bf5aebb388c8722f60f5b329dd1df233a2280f94c65c9a533af33e5c3ba913cd0cec6867f74c71

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

    Filesize

    166KB

    MD5

    7c950b4486ea42aefef4212cd948588f

    SHA1

    62f54d344951856249adc057a630c8f981592a86

    SHA256

    cc5779e83dbeba1fcdc14ae1277485af40463cdfa3d51842b7c2d3e95a6a6031

    SHA512

    e4f140c76f1157c96ff541b7a264c8b05f8ca381428f145587368abb12943b4d05c783564b2b8f71c4af9736241919dfbd895348db8a50c65621ae8c9a25d09d

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

    Filesize

    166KB

    MD5

    7c950b4486ea42aefef4212cd948588f

    SHA1

    62f54d344951856249adc057a630c8f981592a86

    SHA256

    cc5779e83dbeba1fcdc14ae1277485af40463cdfa3d51842b7c2d3e95a6a6031

    SHA512

    e4f140c76f1157c96ff541b7a264c8b05f8ca381428f145587368abb12943b4d05c783564b2b8f71c4af9736241919dfbd895348db8a50c65621ae8c9a25d09d

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

    Filesize

    166KB

    MD5

    7c950b4486ea42aefef4212cd948588f

    SHA1

    62f54d344951856249adc057a630c8f981592a86

    SHA256

    cc5779e83dbeba1fcdc14ae1277485af40463cdfa3d51842b7c2d3e95a6a6031

    SHA512

    e4f140c76f1157c96ff541b7a264c8b05f8ca381428f145587368abb12943b4d05c783564b2b8f71c4af9736241919dfbd895348db8a50c65621ae8c9a25d09d

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

    Filesize

    166KB

    MD5

    7c950b4486ea42aefef4212cd948588f

    SHA1

    62f54d344951856249adc057a630c8f981592a86

    SHA256

    cc5779e83dbeba1fcdc14ae1277485af40463cdfa3d51842b7c2d3e95a6a6031

    SHA512

    e4f140c76f1157c96ff541b7a264c8b05f8ca381428f145587368abb12943b4d05c783564b2b8f71c4af9736241919dfbd895348db8a50c65621ae8c9a25d09d

  • \Users\Admin\AppData\Local\Temp\lnpakna.exe

    Filesize

    166KB

    MD5

    7c950b4486ea42aefef4212cd948588f

    SHA1

    62f54d344951856249adc057a630c8f981592a86

    SHA256

    cc5779e83dbeba1fcdc14ae1277485af40463cdfa3d51842b7c2d3e95a6a6031

    SHA512

    e4f140c76f1157c96ff541b7a264c8b05f8ca381428f145587368abb12943b4d05c783564b2b8f71c4af9736241919dfbd895348db8a50c65621ae8c9a25d09d

  • \Users\Admin\AppData\Local\Temp\lnpakna.exe

    Filesize

    166KB

    MD5

    7c950b4486ea42aefef4212cd948588f

    SHA1

    62f54d344951856249adc057a630c8f981592a86

    SHA256

    cc5779e83dbeba1fcdc14ae1277485af40463cdfa3d51842b7c2d3e95a6a6031

    SHA512

    e4f140c76f1157c96ff541b7a264c8b05f8ca381428f145587368abb12943b4d05c783564b2b8f71c4af9736241919dfbd895348db8a50c65621ae8c9a25d09d

  • \Users\Admin\AppData\Local\Temp\lnpakna.exe

    Filesize

    166KB

    MD5

    7c950b4486ea42aefef4212cd948588f

    SHA1

    62f54d344951856249adc057a630c8f981592a86

    SHA256

    cc5779e83dbeba1fcdc14ae1277485af40463cdfa3d51842b7c2d3e95a6a6031

    SHA512

    e4f140c76f1157c96ff541b7a264c8b05f8ca381428f145587368abb12943b4d05c783564b2b8f71c4af9736241919dfbd895348db8a50c65621ae8c9a25d09d

  • memory/1692-9-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/1692-15-0x0000000000400000-0x000000000042F000-memory.dmp

    Filesize

    188KB

  • memory/2156-13-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/2156-17-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/2156-18-0x0000000000400000-0x0000000000452000-memory.dmp

    Filesize

    328KB

  • memory/2156-20-0x0000000074520000-0x0000000074C0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2156-21-0x0000000001EB0000-0x0000000001EF0000-memory.dmp

    Filesize

    256KB

  • memory/2156-19-0x0000000002070000-0x00000000020B2000-memory.dmp

    Filesize

    264KB

  • memory/2156-22-0x0000000001EB0000-0x0000000001EF0000-memory.dmp

    Filesize

    256KB

  • memory/2156-24-0x0000000074520000-0x0000000074C0E000-memory.dmp

    Filesize

    6.9MB