Analysis

  • max time kernel
    142s
  • max time network
    103s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-05-2024 23:24

General

  • Target

    6a7cb8d390f2ad6970c86a622294aaac0a5044a7ecf5f0aaaf01e9d34756b491.exe

  • Size

    2.6MB

  • MD5

    344ad1858bda423171006cdc057df061

  • SHA1

    d43eeecf193db02bf0b6411c91e242c779b6f2a6

  • SHA256

    6a7cb8d390f2ad6970c86a622294aaac0a5044a7ecf5f0aaaf01e9d34756b491

  • SHA512

    f29c97106830737d66af242d5fa11dad47091c305913fe0e853a3b8ae4f4f62edec2412fc74ec83f333e9ca5ea6586b2ec7ea9a70f997cf1bc229f9d579acf56

  • SSDEEP

    49152:BES5EoQbK/q3vsj/FVW9TUJHrWq2A8Tx+7xGrvUDxa:BEGE3bGwsj/bWCrWq2AJxGrvUDxa

Malware Config

Signatures

  • Detect Neshta payload 4 IoCs
  • Neshta

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • 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).

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6a7cb8d390f2ad6970c86a622294aaac0a5044a7ecf5f0aaaf01e9d34756b491.exe
    "C:\Users\Admin\AppData\Local\Temp\6a7cb8d390f2ad6970c86a622294aaac0a5044a7ecf5f0aaaf01e9d34756b491.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4388
    • C:\Users\Admin\AppData\Local\Temp\3582-490\6a7cb8d390f2ad6970c86a622294aaac0a5044a7ecf5f0aaaf01e9d34756b491.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\6a7cb8d390f2ad6970c86a622294aaac0a5044a7ecf5f0aaaf01e9d34756b491.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:232

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Privilege Escalation

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE
    Filesize

    86KB

    MD5

    3b73078a714bf61d1c19ebc3afc0e454

    SHA1

    9abeabd74613a2f533e2244c9ee6f967188e4e7e

    SHA256

    ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29

    SHA512

    75959d4e8a7649c3268b551a2a378e6d27c0bfb03d2422ebeeb67b0a3f78c079473214057518930f2d72773ce79b106fd2d78405e8e3d8883459dcbb49c163c4

  • C:\Users\Admin\AppData\Local\Temp\3582-490\6a7cb8d390f2ad6970c86a622294aaac0a5044a7ecf5f0aaaf01e9d34756b491.exe
    Filesize

    2.5MB

    MD5

    c3aa6842e260971d4f84edfc79aff3a9

    SHA1

    49552c371df3f55aef19dac4c2eda9cc6ea51bb9

    SHA256

    f844243fbb1dcfc18ea9dcc2ab95efdaf867b0a1d4c24f388bb11567274355b0

    SHA512

    343efe62b3fc4b77de4abfda4f912d566d13178db4e07009a3473ae7f0f839548660e350b471b2ef544465483790565542d4ad194d2275196bd3323fdaace0d8

  • memory/232-12-0x0000000002750000-0x0000000002751000-memory.dmp
    Filesize

    4KB

  • memory/232-13-0x0000000000405000-0x0000000000406000-memory.dmp
    Filesize

    4KB

  • memory/232-14-0x0000000000400000-0x00000000006D1000-memory.dmp
    Filesize

    2.8MB

  • memory/232-104-0x0000000000400000-0x00000000006D1000-memory.dmp
    Filesize

    2.8MB

  • memory/4388-102-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/4388-103-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB

  • memory/4388-106-0x0000000000400000-0x000000000041B000-memory.dmp
    Filesize

    108KB