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Analysis

  • max time kernel
    145s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    19/03/2024, 23:58

General

  • Target

    d7675fd593ef2c42942787ebf9f35b1a.exe

  • Size

    274KB

  • MD5

    d7675fd593ef2c42942787ebf9f35b1a

  • SHA1

    a24022f1e69eb487c313d47b9308e41d4d9e79a4

  • SHA256

    2497676cc466ed3ec9d862a92d96c53941cfe40f00574908a447dec02eaeec8d

  • SHA512

    a7fca31263e0eda569c512ba4b459f68dc80a5ee2ba5f7e7b0589d2540f7d2365aab03ee09ae4b0dd9ddc9bf52036bfb75676e97972108616cea562c7fa2d2c8

  • SSDEEP

    6144:riMmXRH6pXfSb0ceR/VFAHh1kgcs0HW1kyAp08Y:ZMMpXKb0hNGh1kG0HWnAO

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Renames multiple (91) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • ASPack v2.12-2.42 3 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Drops startup file 3 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 31 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • Drops autorun.inf file 1 TTPs 3 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in System32 directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d7675fd593ef2c42942787ebf9f35b1a.exe
    "C:\Users\Admin\AppData\Local\Temp\d7675fd593ef2c42942787ebf9f35b1a.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops startup file
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops autorun.inf file
    • Drops file in System32 directory
    • Suspicious use of WriteProcessMemory
    PID:2768
    • C:\Windows\SysWOW64\HelpMe.exe
      C:\Windows\system32\HelpMe.exe
      2⤵
      • Modifies WinLogon for persistence
      • Drops startup file
      • Executes dropped EXE
      • Loads dropped DLL
      • Enumerates connected drives
      • Drops autorun.inf file
      • Drops file in System32 directory
      PID:1588

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\$Recycle.Bin\S-1-5-21-2721934792-624042501-2768869379-1000\desktop.ini.exe

    Filesize

    275KB

    MD5

    b2afe012a69d3ddf132e9885a4c545e3

    SHA1

    65c758128251be054a99568f73a2872a5c257353

    SHA256

    bc2d022b0621d5b550c2551fb24109434069a720a763f6e6dac1ad0968a651cb

    SHA512

    307f7bb2e34ddbfaa28f80d4a197e6d3b4e2d20011ab7ca8fb213aecf05f02e7d7efa91e6e1ff3d16edd7ae789859cb54ecfad65a3410357b0e303f8b40a1584

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk

    Filesize

    1KB

    MD5

    464ad26b04a22860cd73ed5d77d21b0a

    SHA1

    e9bb913159f7df2a739074d22b832116a986e013

    SHA256

    02396a1692316c84440060799f82a6eea9c193a510c778194f604f6d60b69eae

    SHA512

    081966691731cd9527ec2ec19ad7ca81c7f51ee4c1fd2a1844337a805fb9a3edb95b3a9304eae381ad0d7ab17493b286324051e0dd76002b88660418098e00ba

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Soft.lnk

    Filesize

    950B

    MD5

    f65149eb1f585e8703b026e1cba5ced1

    SHA1

    4493dc1be12a67ed8e8b45c644da8ac117520f5c

    SHA256

    3e4160c1f84c08e3e8f99b1a779eba095d592a31b73dd8d33a77bd287985a2fd

    SHA512

    af04869038cca15ac2eb9f6ecc01cf737a54e2120371103adfd27ee383d621199838897dd01ddebd85430550853dda8e7793376dcfe42fc0a6e376e9b82512cf

  • C:\Windows\SysWOW64\HelpMe.exe

    Filesize

    273KB

    MD5

    2a38138ec8863c64692be7931e0219b1

    SHA1

    aa4fc2a216226d8701f87d35fbabad737f58a340

    SHA256

    35750725047b846160521163bb8d75cbf6268751e0fd056f3dd7b522bcb87413

    SHA512

    865611833f67a9a9f5563ee414512a6a53d843a4d2b944c6d833e6525f4831fc8fc3fd86e29dae76dbf856ebd240816477b730c525ad3a52cb8a5d94e2e299d9

  • F:\AUTORUN.INF

    Filesize

    145B

    MD5

    ca13857b2fd3895a39f09d9dde3cca97

    SHA1

    8b78c5b2ec97c372ebdcef92d14b0998f8dd6dd0

    SHA256

    cfe448b4506a95b33b529efa88f1ac704d8bdf98a941c065650ead27609318ae

    SHA512

    55e5b5325968d1e5314527fb2d26012f5aae4a1c38e305417be273400cb1c6d0c22b85bddb501d7a5720a3f53bb5caf6ada8a7894232344c4f6c6ef85d226b47

  • F:\AutoRun.exe

    Filesize

    274KB

    MD5

    d7675fd593ef2c42942787ebf9f35b1a

    SHA1

    a24022f1e69eb487c313d47b9308e41d4d9e79a4

    SHA256

    2497676cc466ed3ec9d862a92d96c53941cfe40f00574908a447dec02eaeec8d

    SHA512

    a7fca31263e0eda569c512ba4b459f68dc80a5ee2ba5f7e7b0589d2540f7d2365aab03ee09ae4b0dd9ddc9bf52036bfb75676e97972108616cea562c7fa2d2c8

  • memory/1588-231-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1588-255-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1588-364-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1588-305-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1588-358-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1588-243-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1588-352-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1588-10-0x0000000000220000-0x0000000000221000-memory.dmp

    Filesize

    4KB

  • memory/1588-346-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1588-269-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1588-340-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1588-281-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1588-329-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1588-293-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1588-317-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2768-230-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2768-316-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2768-304-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2768-328-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2768-292-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2768-339-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2768-280-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2768-344-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2768-268-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2768-351-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2768-254-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2768-357-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2768-242-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2768-363-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/2768-0-0x00000000001B0000-0x00000000001B1000-memory.dmp

    Filesize

    4KB