Overview

overview

10

Static

static

2b9838da7e...le.exe

windows7_x64

10

2b9838da7e...le.exe

windows10_x64

10

Analysis

  • max time kernel
    146s
  • max time network
    120s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    26-07-2021 12:39

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General

  • Target

    2b9838da7edb0decd32b086e47a31e8f5733b5981ad8247a2f9508e232589bff.sample.exe

  • Size

    1.3MB

  • MD5

    0e55ead3b8fd305d9a54f78c7b56741a

  • SHA1

    f7b084e581a8dcea450c2652f8058d93797413c3

  • SHA256

    2b9838da7edb0decd32b086e47a31e8f5733b5981ad8247a2f9508e232589bff

  • SHA512

    5c3d58d1001dce6f2d23f33861e9c7fef766b7fe0a86972e9f1eeb70bfad970b02561da6b6d193cf24bc3c1aaf2a42a950fa6e5dff36386653b8aa725c9abaaa

Score
10/10
dearcrypersistenceransomwarespywarestealer

Malware Config

Extracted

Path

C:\PROGRAM FILES (X86)\ADOBE\ACROBAT READER DC\READER\WEBRESOURCES\RESOURCE0\STATIC\JS\PLUGINS\DESKTOP-CONNECTOR-FILES\readme.txt

Family

dearcry

Ransom Note
Your file has been encrypted! If you want to decrypt, please contact us. [email protected] or [email protected] And please send me the following hash! 638428e5021d4ae247b21acf9c0bf6f6

Signatures

  • DearCry

    DearCry is a ransomware first seen after the 2021 Microsoft Exchange hacks.

    ransomwaredearcry
  • Modifies Installed Components in the registry 2 TTPs
    persistence
  • Modifies extensions of user files 11 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
  • Drops desktop.ini file(s) 58 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Drops file in Program Files directory 64 IoCs
  • Program crash 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 12 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies registry class 34 IoCs
  • Suspicious behavior: EnumeratesProcesses 28 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of FindShellTrayWindow 50 IoCs
  • Suspicious use of SendNotifyMessage 27 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2b9838da7edb0decd32b086e47a31e8f5733b5981ad8247a2f9508e232589bff.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\2b9838da7edb0decd32b086e47a31e8f5733b5981ad8247a2f9508e232589bff.sample.exe"
    1⤵
    • Modifies extensions of user files
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    PID:3016
  • C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 3036 -s 7184
    1⤵
    • Program crash
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:3532
  • C:\Windows\explorer.exe
    explorer.exe
    1⤵
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Checks SCSI registry key(s)
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:3844
  • C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
    "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
    1⤵
    • Suspicious use of SetWindowsHookEx
    PID:1788
  • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
    "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
    1⤵
    • Enumerates system info in registry
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:1012
  • C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 3480 -s 1404
    1⤵
    • Program crash
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1504
  • C:\Windows\System32\RuntimeBroker.exe
    C:\Windows\System32\RuntimeBroker.exe -Embedding
    1⤵
      PID:3920

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/3844-116-0x00000000022E0000-0x00000000022E1000-memory.dmp

      Filesize

      4KB

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