Overview

overview

10

Static

static

HEUR-Backd...48.exe

windows7-x64

10

HEUR-Backd...48.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/12/2022, 09:18

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General

  • Target

    HEUR-Backdoor.MSIL.Quasar.gen-17f5902438ae8e7874be0cf1481d689b7cb4555934c0d48321ea085bee137248.exe

  • Size

    144KB

  • MD5

    7f7fa947c50c3f910aeb0ab971ddbe30

  • SHA1

    fae2adb3424a82d8922e512b823bd85b9e1f9d00

  • SHA256

    17f5902438ae8e7874be0cf1481d689b7cb4555934c0d48321ea085bee137248

  • SHA512

    9966ea045c835e97c93e34f00708e9d1cc88053dd7eb36a0aafe80596f902a51868c6a43a818a3e79e1db341ce69708c0a61da16c4f0c630abaa46c8c7278388

  • SSDEEP

    3072:TW9VDGgVRschltqD7J/+kD5f2VX7X9sYoo:i9VL0GlMD7ImfOXL9ko

Score
7/10
persistence

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\HEUR-Backdoor.MSIL.Quasar.gen-17f5902438ae8e7874be0cf1481d689b7cb4555934c0d48321ea085bee137248.exe
    "C:\Users\Admin\AppData\Local\Temp\HEUR-Backdoor.MSIL.Quasar.gen-17f5902438ae8e7874be0cf1481d689b7cb4555934c0d48321ea085bee137248.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4152
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /tn "WINDOWSSYSTEMHOST" /tr "C:\Users\Admin\AppData\Local\Temp\HEUR-Backdoor.MSIL.Quasar.gen-17f5902438ae8e7874be0cf1481d689b7cb4555934c0d48321ea085bee137248.exe" /sc MINUTE /MO 1
      2⤵
      • Creates scheduled task(s)
      PID:4060
  • C:\Users\Admin\AppData\Local\Temp\HEUR-Backdoor.MSIL.Quasar.gen-17f5902438ae8e7874be0cf1481d689b7cb4555934c0d48321ea085bee137248.exe
    C:\Users\Admin\AppData\Local\Temp\HEUR-Backdoor.MSIL.Quasar.gen-17f5902438ae8e7874be0cf1481d689b7cb4555934c0d48321ea085bee137248.exe
    1⤵
      PID:3620
    • C:\Users\Admin\AppData\Local\Temp\HEUR-Backdoor.MSIL.Quasar.gen-17f5902438ae8e7874be0cf1481d689b7cb4555934c0d48321ea085bee137248.exe
      C:\Users\Admin\AppData\Local\Temp\HEUR-Backdoor.MSIL.Quasar.gen-17f5902438ae8e7874be0cf1481d689b7cb4555934c0d48321ea085bee137248.exe
      1⤵
        PID:2848

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\HEUR-Backdoor.MSIL.Quasar.gen-17f5902438ae8e7874be0cf1481d689b7cb4555934c0d48321ea085bee137248.exe.log
              Filesize

              1KB

              MD5

              2362dcc9d262d0969898b143fb7fc91a

              SHA1

              2240860a675c86425f5702b501eac121bfb744eb

              SHA256

              4f7cff601d97caf1e0040bc2d63ccadd27294b2e551ff4167e0b080c69a915b0

              SHA512

              59cb7e53dc9cc02f25216cc87115403ed67fb5d24947ef2e803cd54e9f118d5d65a71817b05642c238ca48eb7bfd228d008d92e42023f2c15755c64c88f5b0d6

              Download Submit

            • memory/2848-141-0x00007FFBDC0C0000-0x00007FFBDCB81000-memory.dmp

              Filesize

              10.8MB

              Download

            • memory/2848-142-0x00007FFBDC0C0000-0x00007FFBDCB81000-memory.dmp

              Filesize

              10.8MB

              Download

            • memory/3620-138-0x00007FFBDC0C0000-0x00007FFBDCB81000-memory.dmp

              Filesize

              10.8MB

              Download

            • memory/3620-139-0x00007FFBDC0C0000-0x00007FFBDCB81000-memory.dmp

              Filesize

              10.8MB

              Download

            • memory/4152-132-0x0000000000720000-0x0000000000728000-memory.dmp

              Filesize

              32KB

              Download

            • memory/4152-133-0x00007FFBDC0C0000-0x00007FFBDCB81000-memory.dmp

              Filesize

              10.8MB

              Download

            • memory/4152-134-0x000000001B1A0000-0x000000001B1B2000-memory.dmp

              Filesize

              72KB

              Download

            • memory/4152-135-0x000000001B200000-0x000000001B23C000-memory.dmp

              Filesize

              240KB

              Download

            • memory/4152-137-0x00007FFBDC0C0000-0x00007FFBDCB81000-memory.dmp

              Filesize

              10.8MB

              Download