Analysis

  • max time kernel
    164s
  • max time network
    180s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-12-2022 20:27

General

  • Target

    SH-765433_pdf.exe

  • Size

    347KB

  • MD5

    971b0cc850794850607ece60e62da848

  • SHA1

    e717ebba195c641533dc4cd704fb59b001804a97

  • SHA256

    8ccbf1ed960f1c8d93be2abbb9b7228a156c64b82ad258458e596226aaf6c95c

  • SHA512

    960faa4b0b90afe5c6b44ebeb2a83c6702c643ef4ebfc5802bc344d96bd456d314a63fa3a4aa786b4e3dc04523c0a7a2dc6636d05e6f986d1d10e0964a359386

  • SSDEEP

    6144:9kwI5mH2y25AOzOGP4d4ndG/UXkR6Z3+6xeZPgw9ceD2bSDs:U5N3zOGQh/UXkRi+sAFceEss

Malware Config

Signatures

  • AgentTesla

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

  • Executes dropped EXE 3 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
  • 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). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SH-765433_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\SH-765433_pdf.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4552
    • C:\Users\Admin\AppData\Local\Temp\jmpssjbye.exe
      "C:\Users\Admin\AppData\Local\Temp\jmpssjbye.exe" C:\Users\Admin\AppData\Local\Temp\ehwcr.fk
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:4316
      • C:\Users\Admin\AppData\Local\Temp\jmpssjbye.exe
        "C:\Users\Admin\AppData\Local\Temp\jmpssjbye.exe"
        3⤵
        • Executes dropped EXE
        PID:2468
      • C:\Users\Admin\AppData\Local\Temp\jmpssjbye.exe
        "C:\Users\Admin\AppData\Local\Temp\jmpssjbye.exe"
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:1496

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\ehwcr.fk

    Filesize

    5KB

    MD5

    68cd911df4d68d584ca4282788a95530

    SHA1

    fc91c5c57dbb5abe9c4a18e482ec74e962090c53

    SHA256

    75f41703a00ae3744d1dc21df418ef5f79ac14dd3d46d5ce245d05b9645aa1ff

    SHA512

    bb583fb4b9336ca8dc1cc4b73e71638d2ae5b6e088ff183b171c4bcc8ae90036ab60958e87fd61c5f8dbe71862f8c52b3eb35086b6a21b4be9f024ab2dea6bf2

  • C:\Users\Admin\AppData\Local\Temp\ifoxwb.yad

    Filesize

    241KB

    MD5

    33c122f63413881e4335231f56fa056e

    SHA1

    af6700cd2a6a26cf13f837d89d95de826dc5c67d

    SHA256

    b4865e6a67d14d4701185930eb002a08ac193f21f45ffd6980a15b9e4bfc98dd

    SHA512

    1477d017bb498c7830d1971eac2a44c370c42e470e9079e96c9c74939b72faddca4cf05a83460a76d42b9bf67afbef62a76b0098271b0df8c1a5f6576a14a7ba

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

    Filesize

    287KB

    MD5

    8acbb590c8f9e3359d423579ad62e46c

    SHA1

    151c4b9f98212953a1602a93eee4c8fea69ee757

    SHA256

    9cb977a24715b4131f88116c28e1bd2a4e890ee211ff67abd1e252b890aa0d93

    SHA512

    78bef162ee89bce5467f87ea7a3f728c364d35eb0a191d744e40c58a122eecd26a5d5cecd68f5f3660ada0a549a506bd9f8bc95c1d81ece6b679395f67e92cf8

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

    Filesize

    287KB

    MD5

    8acbb590c8f9e3359d423579ad62e46c

    SHA1

    151c4b9f98212953a1602a93eee4c8fea69ee757

    SHA256

    9cb977a24715b4131f88116c28e1bd2a4e890ee211ff67abd1e252b890aa0d93

    SHA512

    78bef162ee89bce5467f87ea7a3f728c364d35eb0a191d744e40c58a122eecd26a5d5cecd68f5f3660ada0a549a506bd9f8bc95c1d81ece6b679395f67e92cf8

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

    Filesize

    287KB

    MD5

    8acbb590c8f9e3359d423579ad62e46c

    SHA1

    151c4b9f98212953a1602a93eee4c8fea69ee757

    SHA256

    9cb977a24715b4131f88116c28e1bd2a4e890ee211ff67abd1e252b890aa0d93

    SHA512

    78bef162ee89bce5467f87ea7a3f728c364d35eb0a191d744e40c58a122eecd26a5d5cecd68f5f3660ada0a549a506bd9f8bc95c1d81ece6b679395f67e92cf8

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

    Filesize

    287KB

    MD5

    8acbb590c8f9e3359d423579ad62e46c

    SHA1

    151c4b9f98212953a1602a93eee4c8fea69ee757

    SHA256

    9cb977a24715b4131f88116c28e1bd2a4e890ee211ff67abd1e252b890aa0d93

    SHA512

    78bef162ee89bce5467f87ea7a3f728c364d35eb0a191d744e40c58a122eecd26a5d5cecd68f5f3660ada0a549a506bd9f8bc95c1d81ece6b679395f67e92cf8

  • memory/1496-139-0x0000000000000000-mapping.dmp

  • memory/1496-141-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/1496-142-0x0000000005BB0000-0x0000000006154000-memory.dmp

    Filesize

    5.6MB

  • memory/1496-143-0x00000000056A0000-0x000000000573C000-memory.dmp

    Filesize

    624KB

  • memory/1496-144-0x00000000065E0000-0x0000000006646000-memory.dmp

    Filesize

    408KB

  • memory/1496-145-0x0000000006E30000-0x0000000006EC2000-memory.dmp

    Filesize

    584KB

  • memory/1496-146-0x0000000006E20000-0x0000000006E2A000-memory.dmp

    Filesize

    40KB

  • memory/1496-147-0x0000000007200000-0x0000000007250000-memory.dmp

    Filesize

    320KB

  • memory/2468-137-0x0000000000000000-mapping.dmp

  • memory/4316-132-0x0000000000000000-mapping.dmp