Overview

overview

10

Static

static

10

1e2335fef4...in.exe

windows7_x64

10

1e2335fef4...in.exe

windows10_x64

10

Analysis

  • max time kernel
    128s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    08-08-2021 17:00

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General

  • Target

    1e2335fef46f7320069623fff6702acb41c2877aff5fec83d94a561af37c3c7a.bin.exe

  • Size

    678KB

  • MD5

    f05df52a73ea28f25d0a85f927f2444a

  • SHA1

    a5c00571f42bad2f17db4d4032b07318abc6f7f1

  • SHA256

    1e2335fef46f7320069623fff6702acb41c2877aff5fec83d94a561af37c3c7a

  • SHA512

    0b2a3a0bde6fcc23565ccdb1df49727930ad53345f91a3450455d0e8fb431a59af74a169d8c6ae2195afc340d7fde42969638f5d4de5501d1f75737be625e0b2

Score
10/10
medusalockerevasionransomwarespywarestealertrojan

Malware Config

Signatures

  • MedusaLocker

    Ransomware with several variants first seen in September 2019.

    ransomwaremedusalocker
  • MedusaLocker Payload 2 IoCs
  • UAC bypass 3 TTPs
    evasiontrojan
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Executes dropped EXE 1 IoCs
  • Modifies extensions of user files 3 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • Drops desktop.ini file(s) 1 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 3 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 63 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • System policy modification 1 TTPs 3 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\1e2335fef46f7320069623fff6702acb41c2877aff5fec83d94a561af37c3c7a.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\1e2335fef46f7320069623fff6702acb41c2877aff5fec83d94a561af37c3c7a.bin.exe"
    1⤵
    • Modifies extensions of user files
    • Checks whether UAC is enabled
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2012
    • C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      2⤵
      • Interacts with shadow copies
      PID:1524
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1888
    • C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      2⤵
      • Interacts with shadow copies
      PID:1076
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:524
    • C:\Windows\SysWOW64\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      2⤵
      • Interacts with shadow copies
      PID:1916
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1048
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1168
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {5AD8DB49-8C47-4F1B-B66B-672893AF0E40} S-1-5-21-2513283230-931923277-594887482-1000:MRBKYMNO\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1964
    • C:\Users\Admin\AppData\Roaming\svhost.exe
      C:\Users\Admin\AppData\Roaming\svhost.exe
      2⤵
      • Executes dropped EXE
      PID:1080

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\svhost.exe
    MD5

    f05df52a73ea28f25d0a85f927f2444a

    SHA1

    a5c00571f42bad2f17db4d4032b07318abc6f7f1

    SHA256

    1e2335fef46f7320069623fff6702acb41c2877aff5fec83d94a561af37c3c7a

    SHA512

    0b2a3a0bde6fcc23565ccdb1df49727930ad53345f91a3450455d0e8fb431a59af74a169d8c6ae2195afc340d7fde42969638f5d4de5501d1f75737be625e0b2

    Download Submit

  • C:\Users\Admin\AppData\Roaming\svhost.exe
    MD5

    f05df52a73ea28f25d0a85f927f2444a

    SHA1

    a5c00571f42bad2f17db4d4032b07318abc6f7f1

    SHA256

    1e2335fef46f7320069623fff6702acb41c2877aff5fec83d94a561af37c3c7a

    SHA512

    0b2a3a0bde6fcc23565ccdb1df49727930ad53345f91a3450455d0e8fb431a59af74a169d8c6ae2195afc340d7fde42969638f5d4de5501d1f75737be625e0b2

    Download Submit

  • memory/524-63-0x0000000000000000-mapping.dmp

    Download

  • memory/1048-65-0x0000000000000000-mapping.dmp

    Download

  • memory/1076-62-0x0000000000000000-mapping.dmp

    Download

  • memory/1080-67-0x0000000000000000-mapping.dmp

    Download

  • memory/1524-60-0x0000000000000000-mapping.dmp

    Download

  • memory/1888-61-0x0000000000000000-mapping.dmp

    Download

  • memory/1916-64-0x0000000000000000-mapping.dmp

    Download

  • memory/2012-59-0x00000000765F1000-0x00000000765F3000-memory.dmp

    Filesize

    8KB

    Download