Overview

overview

10

Static

static

1

2023-04-12...is.exe

windows7-x64

10

2023-04-12...is.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    158s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    13-04-2023 03:00

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General

  • Target

    2023-04-12_bd3e58a09341d6f40bf9178940ef6603_crysis.exe

  • Size

    92KB

  • MD5

    bd3e58a09341d6f40bf9178940ef6603

  • SHA1

    f613f93fe45dd132e7a7808c4424ee3ea264b5cb

  • SHA256

    abbcff728043498c875932756d21ffde3e4bc5a9681db49eb3d612d57bf0df56

  • SHA512

    6aa4d6b30d5d54a971d2b56b224eaa68f29985ab1557814bcd9465521b82adb478e8be066e154b2004173f845d39c75e446e582e42c4d3a2b8547f0207c316e4

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4AWeagaZE/Vbah42oFEln2kHCvT1l7/wlhx4MPx:Qw+asqN5aW/hLQe3B0Hln2kir1ebxvJ

Score
10/10
dharmapersistenceransomwarespywarestealer

Malware Config

Extracted

Path

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

Ransom Note
All FILES ENCRYPTED "RSA1024" All YOUR FILES HAVE BEEN ENCRYPTED!!! IF YOU WANT TO RESTORE THEM, WRITE US TO THE E-MAIL backdata@qq.com IN THE LETTER WRITE YOUR ID, YOUR ID 7B3EF411 IF YOU ARE NOT ANSWERED, WRITE TO EMAIL: dta@cock.li YOUR SECRET KEY WILL BE STORED ON A SERVER 7 DAYS, AFTER 7 DAYS IT MAY BE OVERWRITTEN BY OTHER KEYS, DON'T PULL TIME, WAITING YOUR EMAIL FREE DECRYPTION FOR PROOF You can send us up to 1 file for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.) DECRYPTION PROCESS: When you make sure of decryption possibility transfer the money to our bitcoin wallet. As soon as we receive the money we will send you: 1. Decryption program. 2. Detailed instruction for decryption. 3. And individual keys for decrypting your files. !WARNING! 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

backdata@qq.com

dta@cock.li

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 5 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
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 1 IoCs
    adwarespyware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 28 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\2023-04-12_bd3e58a09341d6f40bf9178940ef6603_crysis.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-04-12_bd3e58a09341d6f40bf9178940ef6603_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:1680
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1752
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:1668
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:968
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1284
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:2980
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:3016
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
            PID:628
          • 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:1236
        • C:\Windows\system32\vssvc.exe
          C:\Windows\system32\vssvc.exe
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1632

        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

        2
        T1112

        Credential Access

        Credentials in Files

        1
        T1081

        Discovery

        System Information Discovery

        1
        T1082

        Lateral Movement

        Collection

        Data from Local System

        1
        T1005

        Exfiltration

        Command and Control

        Impact

        Inhibit System Recovery

        2
        T1490

        Replay Monitor

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        Downloads

        • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\OWOW64WW.cab.id-7B3EF411.[backdata@qq.com].qbix
          Filesize

          23.5MB

          MD5

          356c49d3d14c96f62dd2fb69742669c9

          SHA1

          6f011aaaf7874972fd5e9816ce0ed87b37514455

          SHA256

          7164de137881633688eee6ffe3eb31056e6eeb3116f84ce88289912b90d2609c

          SHA512

          6bf45b893e4503184a832f50cc6d2b9dc1c8b873533974579c7a65c47371c2f2a7af0c2dea8cee718ed0dc8672a039255ae03c5a13bac5079e8feeb50672024e

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

          13KB

          MD5

          a6151e37c72c92e2b4eb061d64c08995

          SHA1

          43d02b545c7ad0b87ec8be7d22e8e1e076b6c2ad

          SHA256

          df1ce4c9a627052d1c618497c220a0c8ac948bb52c25cd88b01ea42abd6e3031

          SHA512

          19839f27b5665d5173443acb830f2b5f900a69fff77578e5e96b08a9633c1f6a7e5d69053c7a665824ca9bd9abc2c0fd33ebbd45a02a7f5241b134f80656fbf2

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        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
          Filesize

          13KB

          MD5

          a6151e37c72c92e2b4eb061d64c08995

          SHA1

          43d02b545c7ad0b87ec8be7d22e8e1e076b6c2ad

          SHA256

          df1ce4c9a627052d1c618497c220a0c8ac948bb52c25cd88b01ea42abd6e3031

          SHA512

          19839f27b5665d5173443acb830f2b5f900a69fff77578e5e96b08a9633c1f6a7e5d69053c7a665824ca9bd9abc2c0fd33ebbd45a02a7f5241b134f80656fbf2

          Download Submit