Overview

overview

9

Static

static

1

3f18fe131a...7N.exe

windows7-x64

9

3f18fe131a...7N.exe

windows10-2004-x64

9

Analysis

  • max time kernel
    95s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/10/2024, 06:24

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General

  • Target

    3f18fe131a670dac791e316b5f159afdfe34ddb1ce2ca57e55aaad1a3f2e8837N.exe

  • Size

    4.3MB

  • MD5

    fb8e6814ec8655fd73bf4bc9513d1d20

  • SHA1

    1800976d6fd154f7c5a135dabd3bdf0a3a4d3ca1

  • SHA256

    3f18fe131a670dac791e316b5f159afdfe34ddb1ce2ca57e55aaad1a3f2e8837

  • SHA512

    fda562b9c3320ad8c4a10065f4b607b85a191b13ca63f33f3a4b2450cdce634269bc20a519404eb9bcb9dc76abd2a924fe240b8d76f79f0c79f3555f30f2e220

  • SSDEEP

    98304:aqSh5zRZwYeMMIV3PsU6Z8y6TaOphYLYSHinQpUt/YV5DyzFf:ajHYOpCm/s9y

Score
9/10
bootkitdiscoveryevasionpersistencespywarestealer

Malware Config

Signatures

  • Enumerates VirtualBox registry keys 2 TTPs 5 IoCs
    evasion
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
    evasion
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
    evasion
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Checks installed software on the system 1 TTPs

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

    discovery
  • 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.

    bootkitpersistence
  • Checks system information in the registry 2 TTPs 1 IoCs

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

  • Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs

    Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.

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

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: RenamesItself 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3f18fe131a670dac791e316b5f159afdfe34ddb1ce2ca57e55aaad1a3f2e8837N.exe
    "C:\Users\Admin\AppData\Local\Temp\3f18fe131a670dac791e316b5f159afdfe34ddb1ce2ca57e55aaad1a3f2e8837N.exe"
    1⤵
    • Writes to the Master Boot Record (MBR)
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: RenamesItself
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3348
    • C:\ProgramData\Чистилка\Чистилка.exe
      C:\ProgramData\Чистилка\Чистилка.exe /srvcreate
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:4232
    • C:\Users\Admin\AppData\Local\Temp\3f18fe131a670dac791e316b5f159afdfe34ddb1ce2ca57e55aaad1a3f2e8837N.exe
      "C:\Users\Admin\AppData\Local\Temp\3f18fe131a670dac791e316b5f159afdfe34ddb1ce2ca57e55aaad1a3f2e8837N.exe" /test
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3948
    • C:\Users\Admin\AppData\Local\Temp\3f18fe131a670dac791e316b5f159afdfe34ddb1ce2ca57e55aaad1a3f2e8837N.exe
      "C:\Users\Admin\AppData\Local\Temp\3f18fe131a670dac791e316b5f159afdfe34ddb1ce2ca57e55aaad1a3f2e8837N.exe" /restart /util
      2⤵
      • Enumerates VirtualBox registry keys
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Looks for VirtualBox Guest Additions in registry
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Checks system information in the registry
      • Checks for VirtualBox DLLs, possible anti-VM trick
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      PID:4420

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\ProgramData\Чистилка\config.dat
    Filesize

    476KB

    MD5

    221c50cd7423475268c671a847068e0d

    SHA1

    d0d2c213c91664fa8d7b80bdcf8d11501f4dfde6

    SHA256

    a380c6bef8cf0a90290c39bccd6c27857353b9c46d12d808c6d215dc8504cfb7

    SHA512

    fc2884bd539c7941b9c736784d83fc4eb3cf9f78a74341a6dd46344e55ef5efa584703c10ff08d7442d16a6a5ea73ae1aa905acd0fa995b717facabc8aba5a78

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  • C:\ProgramData\Чистилка\settings.json
    Filesize

    638B

    MD5

    7b1f4611fde318efe702102a65a7cf37

    SHA1

    3b6b25f7858135a903f06e4236d4d288179c32b8

    SHA256

    0fee7a989e4db82caa219cc5663e97678e1162267a7a170002755390716068f2

    SHA512

    d4e66fe6fb5265452ec3f66e36461c1707808881a6371a9caf6a074f0a17f3af3e89bb66db2ebc16fa9361d569afef6d3cf9287914728a86e7bc8800fad9fbbc

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  • C:\ProgramData\Чистилка\Чистилка.exe
    Filesize

    4.3MB

    MD5

    fb8e6814ec8655fd73bf4bc9513d1d20

    SHA1

    1800976d6fd154f7c5a135dabd3bdf0a3a4d3ca1

    SHA256

    3f18fe131a670dac791e316b5f159afdfe34ddb1ce2ca57e55aaad1a3f2e8837

    SHA512

    fda562b9c3320ad8c4a10065f4b607b85a191b13ca63f33f3a4b2450cdce634269bc20a519404eb9bcb9dc76abd2a924fe240b8d76f79f0c79f3555f30f2e220

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  • C:\Users\Admin\AppData\Local\Temp\3f18fe131a670dac791e316b5f159afdfe34ddb1ce2ca57e55aaad1a3f2e8837N.exe
    Filesize

    5.9MB

    MD5

    d7ebb78bf1f0e4a8278b2d63013b1134

    SHA1

    498b315dcba9bf4403d6748be61453d5d8991b61

    SHA256

    c5a685088c44b1fbd01f49587af753b6a0f8f793de8d3b3d7e170574fef27ba8

    SHA512

    ead20a19b5262ce34f13bae9c9d1082ce5bf740759ea82042d83600094e38de7aea87d7533fdd7660369ec5bb8549e107aff562fa477711515eb9c15c9c93312

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  • C:\Users\Admin\AppData\Local\Temp\cln83E6.tmp
    Filesize

    49KB

    MD5

    abee4387ab69da821ed9397cc651597d

    SHA1

    5d14f4afdbe15448bf884b528ffffab874f920a7

    SHA256

    ac1dfd38d2fa61e28211e196cd3d754f6ccfb220e8c1beba52e54825cf615e22

    SHA512

    e014294cb60b66bd259f4a6ce262fc9eca30a30e7674dae178dbac6132ba464120e5d1076ee81c1210a2f42f819d94373733172cef9fda77c9effb4eed53a904

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  • C:\Users\Public\Desktop\Чистилка.lnk
    Filesize

    1KB

    MD5

    611af0718140c50ff06c4ca7e4900acd

    SHA1

    d609b503a00ace16250c16a37cb6256b26b9821a

    SHA256

    8d3467ba6f942ceab725322ff16a47dda00c2b3c3c2852ceaf6fdd032ed967c3

    SHA512

    1da2b0891e4523ae1305b611147a80b030f06b51149c00fa3ffc806355240c805575061f68a98c46d62e5f887a4ed8f847f8e01641ac8a5f394ed19f31577cc9

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  • C:\WINDOWS\FONTS\PNS.TTF
    Filesize

    127KB

    MD5

    df8c626474a73ab7a8b511655597c7c4

    SHA1

    5de28f387ea88553d195d1978286d43c33231969

    SHA256

    723091ba5a1b8e65164075516d69c00c71225c6dde61ffc32dd4047803ab42b5

    SHA512

    c8f7d1577cb70610c40b96c835faca6b916c4924b5061351c8a67287567556b2014efb7c73cdcc4fb6533829541cd0264b8a9e428d3c572e29c06b0d96633d59

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  • memory/3348-44-0x0000000000F00000-0x000000000135E000-memory.dmp

    Filesize

    4.4MB

    Download