Overview

overview

10

Static

static

10

8e8b681842...5a.exe

windows7-x64

10

8e8b681842...5a.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    02-04-2024 12:17

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General

  • Target

    8e8b6818423930eea073315743b788aef2f41198961946046b7b89042cb3f95a.exe

  • Size

    92KB

  • MD5

    9d919626f55b47d0766c219ba9b57d27

  • SHA1

    b58c2abea62887342118970ac4cb791765fd72bd

  • SHA256

    8e8b6818423930eea073315743b788aef2f41198961946046b7b89042cb3f95a

  • SHA512

    f901ed68683c481e09b5dbd52ed4d81cdac27711d9c104e933dfcb29a2f89a2c59e8f459fbe10df87c7d66356df2c985c727a0de5c64ca83ddf0205593046008

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4Aa362F8v3Fm6b+awACy3mMP6:Qw+asqN5aW/hLA362FSSuCvF

Score
10/10
dharmapersistenceransomwarespywarestealer

Malware Config

Extracted

Path

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta

Ransom Note
YOUR FILES ARE ENCRYPTED Don't worry,you can return all your files! If you want to restore them, follow this link: email decrypt@europe.com YOUR ID If you have not been answered via the link within 12 hours, write to us by e-mail: reservereserv@airmail.com Attention! Do not rename encrypted files. Do not try to decrypt your data using third party software, it may cause permanent data loss. Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.
Emails

decrypt@europe.com

reservereserv@airmail.com

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 (311) files with added filename extension

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

    ransomware
  • Drops startup file 5 IoCs
  • Loads dropped DLL 8 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Adds Run key to start application 2 TTPs 3 IoCs
    persistence
  • Drops desktop.ini file(s) 64 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 14 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 2 IoCs

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

    ransomware
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware
  • Modifies data under HKEY_USERS 3 IoCs
  • Modifies registry class 20 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of WriteProcessMemory 40 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\8e8b6818423930eea073315743b788aef2f41198961946046b7b89042cb3f95a.exe
    "C:\Users\Admin\AppData\Local\Temp\8e8b6818423930eea073315743b788aef2f41198961946046b7b89042cb3f95a.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:2296
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2848
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2552
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1952
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3764
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:3976
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:3496
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Modifies Internet Explorer settings
          PID:3560
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Modifies Internet Explorer settings
          PID:3820
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2404
      • C:\Windows\system32\msiexec.exe
        C:\Windows\system32\msiexec.exe /V
        1⤵
        • Enumerates connected drives
        • Drops file in Windows directory
        • Modifies data under HKEY_USERS
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2916
        • C:\Windows\syswow64\MsiExec.exe
          C:\Windows\syswow64\MsiExec.exe -Embedding E9BA9957C94759A19F29CE494371D4A5
          2⤵
          • Loads dropped DLL
          PID:3512
        • C:\Windows\system32\MsiExec.exe
          C:\Windows\system32\MsiExec.exe -Embedding DCA8F52476E9A763B9E48F1A0CA453F3
          2⤵
          • Loads dropped DLL
          PID:1672

      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

      2
      T1112

      Credential Access

      Unsecured Credentials

      1
      T1552

      Credentials In Files

      1
      T1552.001

      Discovery

      Query Registry

      1
      T1012

      Peripheral Device Discovery

      1
      T1120

      System Information Discovery

      2
      T1082

      Lateral Movement

      Collection

      Data from Local System

      1
      T1005

      Exfiltration

      Command and Control

      Impact

      Inhibit System Recovery

      2
      T1490

      Resource Development

      Reconnaissance

      Replay Monitor

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      Downloads

      • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\OWOW64WW.cab.id-06C8CBA5.[decrypt@europe.com].eur
        Filesize

        23.5MB

        MD5

        858f0c2a894deb65ac3db050cefed3f8

        SHA1

        f7d1fdf877e30cb30af508d27bc01779440e814e

        SHA256

        4aca0f8775be1af771c23587569204fccf424fa0e5fcf72e6a6e2e7fb1417ad8

        SHA512

        0cf92f958cf9ad3f2e8ae24dae733c08dfe91a5835d8436a800fc6523c4a13785abdf6294078cc069eeb58581da5b15e7a815498a7ea15385bf63f24a1822373

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      • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
        Filesize

        7KB

        MD5

        8dcca00b517d7a22c2e5089cb404a24c

        SHA1

        5a5b5021719add0a371e0d0397ab9218d7de4d14

        SHA256

        70d182151f75f3b9e6e5971354d55b073650ec6960dfc6ac06562c420a504763

        SHA512

        f04326c166dd0be43cad1e8387519ece42d582c115060107a3fb266863a4a6654713e14cd88790e31047f3f2d8c04d936c740ca77b3aaed0af30d91cc170ff3e

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      • C:\Windows\Installer\MSI6068.tmp
        Filesize

        257KB

        MD5

        d1f5ce6b23351677e54a245f46a9f8d2

        SHA1

        0d5c6749401248284767f16df92b726e727718ca

        SHA256

        57cb8f01cf553c3886760180d1a74839f2f676640115504485aca9692f577acc

        SHA512

        960e90894e7bedcc89894e77e57e8ee0c99dd2c530d02665e8bbd3a1793eccc1e295c5923d1f37c757fa1158097fbaae70898c16052882d3d210c29ea801b3ba

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      • C:\Windows\Installer\MSI6115.tmp
        Filesize

        363KB

        MD5

        4a843a97ae51c310b573a02ffd2a0e8e

        SHA1

        063fa914ccb07249123c0d5f4595935487635b20

        SHA256

        727ecf287fb6f4953ee7748913dd559b4f8d3a022fa2ca55bc51cf5886c52086

        SHA512

        905c081552d95b523ecf1155b6c7e157652e5ff00cda30c1c21124d266eb7d305c3398d6832316f403dc45d1b639f1a5a67aea29922cd1a032f52e5247ec55d2

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      • C:\Windows\Installer\MSI636A.tmp
        Filesize

        148KB

        MD5

        33908aa43ac0aaabc06a58d51b1c2cca

        SHA1

        0a0d1ce3435abe2eed635481bac69e1999031291

        SHA256

        4447faacefaba8f040822101e2a4103031660de9139e70ecff9aa3a89455a783

        SHA512

        d5216a53df9cfbe1a78629c103286eb17042f639149c46b6a1cd76498531ae82afd265462fbe0ba9baaff275fc95c66504804f107c449f3fc5833b1ed9c3da46

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      • C:\Windows\Installer\MSI662B.tmp
        Filesize

        86KB

        MD5

        ff58cd07bf4913ef899efd2dfb112553

        SHA1

        f14c1681de808543071602f17a6299f8b4ba2ae8

        SHA256

        1afafe9157ff5670bbec8ce622f45d1ce51b3ee77b7348d3a237e232f06c5391

        SHA512

        23e27444b6cdc17fe56f3a80d6325c2be61ae84213bc7cdaad7bb96daa7e8d2d3defc1b96c3cee4a3f32dc464b0e05720bcf1c0e99626bf83de1b6d5aac000a3

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      • \Windows\Installer\MSI632A.tmp
        Filesize

        28KB

        MD5

        85221b3bcba8dbe4b4a46581aa49f760

        SHA1

        746645c92594bfc739f77812d67cfd85f4b92474

        SHA256

        f6e34a4550e499346f5ab1d245508f16bf765ff24c4988984b89e049ca55737f

        SHA512

        060e35c4de14a03a2cda313f968e372291866cc4acd59977d7a48ac3745494abc54df83fff63cf30be4e10ff69a3b3c8b6c38f43ebd2a8d23d6c86fbee7ba87d

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