Analysis

  • max time kernel
    145s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    02-12-2024 07:51

General

  • Target

    ZAMOWIEN.EXE.exe

  • Size

    990KB

  • MD5

    92f4a16e61583401fdfd50a10968c13e

  • SHA1

    e90b5106e9cb3aa751e9f3ec63dff51e67238bb2

  • SHA256

    3ec0db2719a540246ea9bfecb36bf27b022a88c50e6a866187eda2480049bdf8

  • SHA512

    c408635513111fec341922701471b980698c9020667fb80c575db151f0055c685b27c25a16f6defaa87048251a848ed1316b7720b682e964a655def0d7fd0b4c

  • SSDEEP

    24576:fvCFfkjb7WrPHf4XTK/yiXQ8l9HZONDejqaBjiMD95g7I:yFfk7Qn4DKXXt+ej9iMD9F

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.rusticpensiune.ro
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    hr,d@KUwa5llI%*RNL^J]g%8I;!;_Ne#G1h~lE!*86DAAD6#iLm$x)r+e1z$p+_Q,4_(f!};B?vD!IG?NqT[zOHNr6_nww[S]V?MlcYSt_QO

Signatures

  • AgentTesla

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

  • Agenttesla family
  • Guloader family
  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 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 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ZAMOWIEN.EXE.exe
    "C:\Users\Admin\AppData\Local\Temp\ZAMOWIEN.EXE.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2668
    • C:\Users\Admin\AppData\Local\Temp\ZAMOWIEN.EXE.exe
      "C:\Users\Admin\AppData\Local\Temp\ZAMOWIEN.EXE.exe"
      2⤵
      • Suspicious use of NtCreateThreadExHideFromDebugger
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2932

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\nsjF0C6.tmp\System.dll

    Filesize

    11KB

    MD5

    0ff2d70cfdc8095ea99ca2dabbec3cd7

    SHA1

    10c51496d37cecd0e8a503a5a9bb2329d9b38116

    SHA256

    982c5fb7ada7d8c9bc3e419d1c35da6f05bc5dd845940c179af3a33d00a36a8b

    SHA512

    cb5fc0b3194f469b833c2c9abf493fcec5251e8609881b7f5e095b9bd09ed468168e95dda0ba415a7d8d6b7f0dee735467c0ed8e52b223eb5359986891ba6e2e

  • memory/2668-12-0x0000000002DB0000-0x0000000004987000-memory.dmp

    Filesize

    27.8MB

  • memory/2668-13-0x00000000773B1000-0x00000000774B2000-memory.dmp

    Filesize

    1.0MB

  • memory/2668-14-0x00000000773B0000-0x0000000077559000-memory.dmp

    Filesize

    1.7MB

  • memory/2668-16-0x0000000002DB0000-0x0000000004987000-memory.dmp

    Filesize

    27.8MB

  • memory/2932-15-0x00000000773B0000-0x0000000077559000-memory.dmp

    Filesize

    1.7MB

  • memory/2932-17-0x00000000004A0000-0x0000000001502000-memory.dmp

    Filesize

    16.4MB

  • memory/2932-30-0x00000000004A0000-0x0000000001502000-memory.dmp

    Filesize

    16.4MB

  • memory/2932-31-0x00000000004A0000-0x00000000004E2000-memory.dmp

    Filesize

    264KB