Analysis

  • max time kernel
    47s
  • max time network
    42s
  • platform
    windows7_x64
  • resource
    win7-20220715-en
  • resource tags

    arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
  • submitted
    25-07-2022 03:23

General

  • Target

    86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe

  • Size

    238KB

  • MD5

    2764767a2d1a56be8a9ecad34bc887e8

  • SHA1

    b43ecacac1cdc76d38b60d56220adf34bded0a26

  • SHA256

    86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4

  • SHA512

    034b5da8f955550d7808329c3e83bf5a64535a6b52330076e9c0962b7b6a060f1d2c8243cd15f4546ebc0c9c4a3b4678dc89734f5fa22c0bdf342c9c7caf02c5

Score
7/10

Malware Config

Signatures

  • Loads dropped DLL 2 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Modifies registry class 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe
    "C:\Users\Admin\AppData\Local\Temp\86521486374b5605dfbc8bda25a68c9c2847fedf5ca7b35e917dbdac624074b4.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1480
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1480 -s 500
      2⤵
      • Program crash
      PID:1980

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\System.dll
    Filesize

    12KB

    MD5

    0d7ad4f45dc6f5aa87f606d0331c6901

    SHA1

    48df0911f0484cbe2a8cdd5362140b63c41ee457

    SHA256

    3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca

    SHA512

    c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9

  • \Users\Admin\AppData\Local\Temp\sesquialteras.dll
    Filesize

    44KB

    MD5

    1f1358b84492a98f8bbc71893b33db2c

    SHA1

    cb9fafb0e6b03f96eaf7df5c54dfc5b4d98eca42

    SHA256

    01f983122bccc667965bd7d5573efcfc15ff30bdc2cba34b02713e73089d3fd1

    SHA512

    5cfc818dfe1c49cdc559909b0e41985c55f625294e12b150da422bc5b06df7793df15991b534d2efe7278871566682121bb452668837b3a39fd9b51298f90bf8

  • memory/1480-54-0x0000000076311000-0x0000000076313000-memory.dmp
    Filesize

    8KB

  • memory/1480-57-0x0000000001D50000-0x0000000001D59000-memory.dmp
    Filesize

    36KB

  • memory/1480-63-0x0000000002370000-0x0000000002FBA000-memory.dmp
    Filesize

    12.3MB

  • memory/1480-65-0x0000000002370000-0x0000000002FBA000-memory.dmp
    Filesize

    12.3MB

  • memory/1980-64-0x0000000000000000-mapping.dmp