Analysis

  • max time kernel
    55s
  • max time network
    160s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    26-03-2023 15:44

General

  • Target

    PassMark PerformanceTest 10.2.1008 Portable/App/PerformanceTest/PerformanceTest32.exe

  • Size

    36.2MB

  • MD5

    ca67450c01c5c8025f570e0d9c72fe79

  • SHA1

    5eb81d0db35d1362d87240e783d0f0ccc50fe7e9

  • SHA256

    9b66fb8fc58b93195516e759e7dbccfa6f7ebbe195a0fc4e9a16955307315624

  • SHA512

    c592d8263d06a70c382aed2ded45228f39d343b8e6d39dbcf8f2bea7b2e8b8c5947a325069b33c9be1f387b470bbeba0da60760bc3c0a4393dc91b28b03681f3

  • SSDEEP

    393216:jsIUPGkuHxSyqs7jFQws80KmDJ2mXynzlJKOXpTU2KqdmdLaBh1F8:jzUPaDjxonaBhw

Malware Config

Signatures

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PassMark PerformanceTest 10.2.1008 Portable\App\PerformanceTest\PerformanceTest32.exe
    "C:\Users\Admin\AppData\Local\Temp\PassMark PerformanceTest 10.2.1008 Portable\App\PerformanceTest\PerformanceTest32.exe"
    1⤵
    • Enumerates connected drives
    • Maps connected drives based on registry
    • Writes to the Master Boot Record (MBR)
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    PID:1380

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Bootkit

1
T1067

Defense Evasion

Install Root Certificate

1
T1130

Modify Registry

1
T1112

Discovery

Query Registry

3
T1012

Peripheral Device Discovery

2
T1120

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
    Filesize

    61KB

    MD5

    e71c8443ae0bc2e282c73faead0a6dd3

    SHA1

    0c110c1b01e68edfacaeae64781a37b1995fa94b

    SHA256

    95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72

    SHA512

    b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6

  • C:\Users\Admin\AppData\Local\Temp\Tar81C5.tmp
    Filesize

    161KB

    MD5

    be2bec6e8c5653136d3e72fe53c98aa3

    SHA1

    a8182d6db17c14671c3d5766c72e58d87c0810de

    SHA256

    1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd

    SHA512

    0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

  • memory/1380-56-0x00000000090E0000-0x00000000090EA000-memory.dmp
    Filesize

    40KB

  • memory/1380-57-0x00000000090E0000-0x00000000090EA000-memory.dmp
    Filesize

    40KB

  • memory/1380-55-0x00000000090E0000-0x00000000090EA000-memory.dmp
    Filesize

    40KB

  • memory/1380-130-0x00000000090E0000-0x00000000090EA000-memory.dmp
    Filesize

    40KB

  • memory/1380-129-0x00000000090E0000-0x00000000090EA000-memory.dmp
    Filesize

    40KB

  • memory/1380-131-0x00000000090E0000-0x00000000090EA000-memory.dmp
    Filesize

    40KB

  • memory/1380-132-0x00000000090E0000-0x00000000090EA000-memory.dmp
    Filesize

    40KB