Overview

overview

9

Static

static

IRSdeclara...od.exe

windows7_x64

9

IRSdeclara...od.exe

windows10_x64

9

Resubmissions

15-10-2020 13:59

201015-d11m2zjdgs 10

13-03-2020 03:32

200313-8w7dt2yb5n 9

Analysis

  • max time kernel
    114s
  • max time network
    115s
  • platform
    windows10_x64
  • resource
    win10v200217
  • submitted
    13-03-2020 03:32

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General

  • Target

    IRSdeclaration‮cod.exe

  • Size

    282KB

  • MD5

    fe3fd53ddc7c229b1150d970a05947c0

  • SHA1

    3abeddbbbd29310290955cc7c1a895550c92ab96

  • SHA256

    c414bbb789af8e3fb93b33344b31f1991582ec0f06558b29a3178d2b02465c72

  • SHA512

    8b94e67f48f90d7a0e463a7623ba6f87a5f4108f33587c8f579f29aa3c9b0a22f7e134470824d25dccb552bfc868b18cd3f05ef09aaceef2bab6984c21f203b4

Score
9/10
ransomwarepersistence

Malware Config

Signatures

  • Drops file in Program Files directory 16976 IoCs
  • Modifies service 2 TTPs 5 IoCs
    persistence
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 18202 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • Kills process with taskkill 1 IoCs
    evasion
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\IRSdeclaration‮cod.exe
    "C:\Users\Admin\AppData\Local\Temp\IRSdeclaration‮cod.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4000
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:4020
    • C:\Windows\SysWOW64\notepad.exe
      C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\1713C2-Readme.txt"
      2⤵
        PID:5288
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\6711.tmp.bat"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:6728
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /PID 4000
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          • Kills process with taskkill
          PID:5752
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Modifies service
      • Suspicious use of AdjustPrivilegeToken
      PID:2916

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Modify Existing Service

    1
    T1031

    Privilege Escalation

    Defense Evasion

    Modify Registry

    1
    T1112

    File Deletion

    2
    T1107

    Credential Access

    Discovery

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Inhibit System Recovery

    2
    T1490

    Replay Monitor

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    Downloads