Overview

overview

10

Static

static

3

e181fb2c45...75.exe

windows7-x64

10

e181fb2c45...75.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    167s
  • max time network
    178s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-04-2024 18:21

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General

  • Target

    e181fb2c45e278661fbbf3fe9b4878e3d7bcee0873d7e1132e3808f10d3e4875.exe

  • Size

    92KB

  • MD5

    9dfcd5165fcbf89e319ceca3f5077490

  • SHA1

    32fb887ad469eecfaeb66ff98d73da0edd9a7adc

  • SHA256

    e181fb2c45e278661fbbf3fe9b4878e3d7bcee0873d7e1132e3808f10d3e4875

  • SHA512

    4e417f5ac6898bfe60c772270df06e14a452c1a731558a2e334ae1b09acd5928a042d3f17b07b86e773a559c4f173ec022015d4442062b4f53df8bb194356a7d

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4Ai5KS18YgmeMQq1NQDrorHikgd2ZLj:Qw+asqN5aW/hLqKS183iNyrorHi

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
  • Renames multiple (57) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • Drops startup file 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Drops desktop.ini file(s) 4 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\e181fb2c45e278661fbbf3fe9b4878e3d7bcee0873d7e1132e3808f10d3e4875.exe
    "C:\Users\Admin\AppData\Local\Temp\e181fb2c45e278661fbbf3fe9b4878e3d7bcee0873d7e1132e3808f10d3e4875.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:1392
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2524
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:4564
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1008
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3720 --field-trial-handle=2252,i,16504368816373493055,9578615028378602855,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:3288
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2112

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      Initial Access

      Execution

      Persistence

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Privilege Escalation

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Defense Evasion

      Indicator Removal

      2
      T1070

      File Deletion

      2
      T1070.004

      Modify Registry

      1
      T1112

      Credential Access

      Discovery

      Lateral Movement

      Collection

      Exfiltration

      Command and Control

      Impact

      Inhibit System Recovery

      2
      T1490

      Resource Development

      Reconnaissance

      Replay Monitor

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      Downloads

      • C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe.id-F51EBE30.[decryptex@airmail.cc].dex
        Filesize

        2.9MB

        MD5

        d8c3d1864df83a5a676e91f8529c429d

        SHA1

        a25c364da3d54b1fe9229e44f837267d15a1a78c

        SHA256

        95d0835ab67675e8be16199f9669c7c4fcf8f2b969e32dd578f0ba3a294e4a04

        SHA512

        66a096437d85d9bc93eebff8bbe7cd731f2f51ad3c5740bf0a5bf276887976fbd3744585b044ac4a3db2df51e7c983c0f5a64bad86863b450bdbdbaba3e84371

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