Overview

overview

10

Static

static

1

2023-04-13...is.exe

windows7-x64

10

2023-04-13...is.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    174s
  • max time network
    63s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    14-04-2023 02:53

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General

  • Target

    2023-04-13_bf6e423769b1dc31dafc847cbfe9076a_crysis.exe

  • Size

    92KB

  • MD5

    bf6e423769b1dc31dafc847cbfe9076a

  • SHA1

    50db0bde95a3d257498ffc30250636d753c7ea58

  • SHA256

    7af890c71121d682203be3b23497272f4338cdc27f5af49c41f8275d582e85e1

  • SHA512

    a985faf89341ea70e1106f27b9e253660cc90ecf0dae17fc2f3a208bd5dd43a7b8bf7fd1e69a8f9b730208154a0a6ead53900d1e315138e9e2ed8a492791d347

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4A6GHr/gk1juEGsQJcntrUbSnmp8zaUbBa:Qw+asqN5aW/hLQOhZksGcB8yC8zacBa

Score
10/10
dharmapersistenceransomwarespywarestealer

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
  • 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 1 IoCs
    persistence
  • Drops desktop.ini file(s) 12 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 10 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\2023-04-13_bf6e423769b1dc31dafc847cbfe9076a_crysis.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-04-13_bf6e423769b1dc31dafc847cbfe9076a_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:1332
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1960
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:1284
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1596
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:820

    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

    Credentials in Files

    1
    T1081

    Discovery

    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\ProPlusWW.msi.id-A7A585B3.[prancesonce@tuta.io].java
      Filesize

      24.4MB

      MD5

      47d9b1157b0773d705db284eadce9f03

      SHA1

      3ae43fac5fbbe163415b899b89482c4e530eed2b

      SHA256

      c19e9ba6bca208c9857729c9651d7beadb6824531678fae4cfaf22f464b887c4

      SHA512

      7183a63406f02e84bfdedc0261002be40969b78158931f97abdbe603a41ae08ea5edc36804eea0192f5479e42fde849401a2183c92be0b760dc02551b5b63607

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