Overview

overview

10

Static

static

1

2023-04-15...is.exe

windows7-x64

10

2023-04-15...is.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    188s
  • max time network
    183s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-04-2023 04:03

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General

  • Target

    2023-04-15_f0d51246d6655e30178634fee2792710_crysis.exe

  • Size

    92KB

  • MD5

    f0d51246d6655e30178634fee2792710

  • SHA1

    9757d10f4b4d2d18a996ca18507a0450654caf53

  • SHA256

    40a68110241e86f1cdece1dc5a6dfb72e028b40e8d55447cc3a961341b932784

  • SHA512

    fc1ee9cf97e720c0e522715b42432c195cd9471db4b5266c0cf4b4346b26e3e2355d2317f1701d5d09981e4ac28ab2413015efce7d4a71d6958ae2b529b8509d

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4AkToiOJqIi16U14dJzpTdh7Y2+ZBy55sL:Qw+asqN5aW/hLlBxRU14T5duO5E

Score
10/10
dharmapersistenceransomware

Malware Config

Signatures

  • Dharma

    Dharma is a ransomware that uses security software installation to hide malicious activities.

    ransomwaredharma
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Drops startup file 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Drops desktop.ini file(s) 3 IoCs
  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\2023-04-15_f0d51246d6655e30178634fee2792710_crysis.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-04-15_f0d51246d6655e30178634fee2792710_crysis.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1380
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3224
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:4016
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:3832
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:116

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Privilege Escalation

    Defense Evasion

    File Deletion

    2
    T1107

    Modify Registry

    1
    T1112

    Credential Access

    Discovery

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Inhibit System Recovery

    2
    T1490

    Replay Monitor

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    Downloads

    • C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe.id-836F7BAD.[alladin@cock.li].bip
      Filesize

      2.9MB

      MD5

      2f5fc7737b34eb90168093f59cb2a963

      SHA1

      febfa73ba648882fed89a663246c649e1748bbb4

      SHA256

      a9131b9dcf7468f4f9d0a4dc5f2cc13e68632f5c3ae0d7d0f152839cd1271110

      SHA512

      151411324da8f7ebd3da02b0acc16a048859aa9f75a937434f3ee53e6326748d68e806996eaff9b53fc79c12939561c87c1023b2af4cf591003d4df3d2695871

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