Analysis

  • max time kernel
    8s
  • max time network
    7s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    10-07-2021 06:22

Errors

Reason
Remote task has failed: Machine shutdown

General

  • Target

    repack by xatab.exe

  • Size

    222KB

  • MD5

    e2aaff3cf5f2b9fee6061eddf55620b9

  • SHA1

    f780afcca44c836dc48619dece8374882521bbb1

  • SHA256

    90413227e6a42728248b5adf7c8930491a3ef2c7ec3b21d93f5da52a8f126f6d

  • SHA512

    8827152335018563b4091ed5aebac7d26ff0eae478a848eb8659c9fe9a4ffcd9599457587b3b4310253d85571fe385d3ac4499366e621326092be1b178039834

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-3686645723-710336880-414668232-1000\HOW TO DECRYPT FILES.txt

Ransom Note
The harddisks of your computer have been encrypted with an military grade encryption algorithm. There is no way to restore your data without a special key. You can purchase this key To purchase your key and restore your data, please follow these three easy steps: 1.Create btc wallet and send 350 $ to Happy walentine day nohing personal Please make my life easier write in the them of transaction your email adress

Signatures

  • Executes dropped EXE 4 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • 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.

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Modifies data under HKEY_USERS 15 IoCs
  • Modifies registry class 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\repack by xatab.exe
    "C:\Users\Admin\AppData\Local\Temp\repack by xatab.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3424
    • C:\Users\Admin\AppData\Local\Temp\DECRYPTOR V0.2D.EXE
      "C:\Users\Admin\AppData\Local\Temp\DECRYPTOR V0.2D.EXE"
      2⤵
      • Executes dropped EXE
      PID:1880
    • C:\Users\Admin\AppData\Local\Temp\UPDATE.EXE
      "C:\Users\Admin\AppData\Local\Temp\UPDATE.EXE"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Modifies registry class
      PID:2356
    • C:\Users\Admin\AppData\Local\Temp\UPDATE12.EXE
      "C:\Users\Admin\AppData\Local\Temp\UPDATE12.EXE"
      2⤵
      • Executes dropped EXE
      PID:2664
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2664 -s 700
        3⤵
        • Program crash
        PID:4048
    • C:\Users\Admin\AppData\Local\Temp\MISHA.EXE
      "C:\Users\Admin\AppData\Local\Temp\MISHA.EXE"
      2⤵
      • Executes dropped EXE
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of WriteProcessMemory
      PID:2056
  • C:\Windows\SysWOW64\shutdown.exe
    shutdown.exe -r -f -t 0
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2496
  • C:\Windows\SysWOW64\shutdown.exe
    C:\Windows\System32\shutdown.exe -r -f -t 0
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2644
  • C:\Windows\system32\LogonUI.exe
    "LogonUI.exe" /flags:0x0 /state0:0xa3ac8855 /state1:0x41c64e6d
    1⤵
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:220

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Bootkit

1
T1067

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\DECRYPTOR V0.2D.EXE
    MD5

    921c02dd77c3725fa59905cae1d62ef4

    SHA1

    209e0fe763362b71399c079a441459bde0e8ba74

    SHA256

    8e0f3044d45b6ba6a1eab878f9197670bc7b2d93b61ef7830f97b5bb918c8c12

    SHA512

    c207cd799f4244d4d550e2df5a4625cdaf0e230cbf43e36a5f02e7ab786ede53d9069e4d615f144b84c3c79b955194ad64015b3f3adf235a0278de4664dd60d5

  • C:\Users\Admin\AppData\Local\Temp\DECRYPTOR V0.2D.EXE
    MD5

    921c02dd77c3725fa59905cae1d62ef4

    SHA1

    209e0fe763362b71399c079a441459bde0e8ba74

    SHA256

    8e0f3044d45b6ba6a1eab878f9197670bc7b2d93b61ef7830f97b5bb918c8c12

    SHA512

    c207cd799f4244d4d550e2df5a4625cdaf0e230cbf43e36a5f02e7ab786ede53d9069e4d615f144b84c3c79b955194ad64015b3f3adf235a0278de4664dd60d5

  • C:\Users\Admin\AppData\Local\Temp\MISHA.EXE
    MD5

    3702ab9f6561e836d97e1bc28f68543e

    SHA1

    5ebdcfb324eb0cca288c63e8f8d8b0fa3c92cbe8

    SHA256

    58019901083bce520e1e454ecc82e46f4de32dc721b546ab1e418328ef93f860

    SHA512

    d1bcc7649941b913000dd6d88d76d0eee6883fb81774c46c06e1043e9da026864cd3cb6c7b6aeda8079e264a95afab1c6732b1e8aba4f589379803c0a071562f

  • C:\Users\Admin\AppData\Local\Temp\MISHA.EXE
    MD5

    3702ab9f6561e836d97e1bc28f68543e

    SHA1

    5ebdcfb324eb0cca288c63e8f8d8b0fa3c92cbe8

    SHA256

    58019901083bce520e1e454ecc82e46f4de32dc721b546ab1e418328ef93f860

    SHA512

    d1bcc7649941b913000dd6d88d76d0eee6883fb81774c46c06e1043e9da026864cd3cb6c7b6aeda8079e264a95afab1c6732b1e8aba4f589379803c0a071562f

  • C:\Users\Admin\AppData\Local\Temp\UPDATE.EXE
    MD5

    e4bb04fe99f81331aa57a5c17b4c9111

    SHA1

    989f8c30ceade5cc839100e673f0818c2070a107

    SHA256

    c70ed86ee62c96b7e5e78874810bc3050a2ecb6cda159bb556f830da720bd835

    SHA512

    2beea8f344f0cae1e2f6eb8b3420a3764db9c9361d86673a9a10971b1dfc9dafd616b8b26f79d27d3cbd7351d274c67b29ba114300f6cc78fa0a92afb1baec6c

  • C:\Users\Admin\AppData\Local\Temp\UPDATE.EXE
    MD5

    e4bb04fe99f81331aa57a5c17b4c9111

    SHA1

    989f8c30ceade5cc839100e673f0818c2070a107

    SHA256

    c70ed86ee62c96b7e5e78874810bc3050a2ecb6cda159bb556f830da720bd835

    SHA512

    2beea8f344f0cae1e2f6eb8b3420a3764db9c9361d86673a9a10971b1dfc9dafd616b8b26f79d27d3cbd7351d274c67b29ba114300f6cc78fa0a92afb1baec6c

  • C:\Users\Admin\AppData\Local\Temp\UPDATE12.EXE
    MD5

    5d85c23d3bcbba39ad63b98be64a688f

    SHA1

    bd7651d157480f122f106ae4991947c5f008d0cf

    SHA256

    06ed693d7f86ea5b484efb53ef469292a69d682fe0a68b0dd7a69fad6a736ada

    SHA512

    82ed8436517aa412064ebe426f4125aa485996650f863d88fb8e7cd4c18cc4394441fde4ab9d24606a558d56e07d4c6f185978fe55ca27dfcac6d25c824856a3

  • C:\Users\Admin\AppData\Local\Temp\UPDATE12.EXE
    MD5

    5d85c23d3bcbba39ad63b98be64a688f

    SHA1

    bd7651d157480f122f106ae4991947c5f008d0cf

    SHA256

    06ed693d7f86ea5b484efb53ef469292a69d682fe0a68b0dd7a69fad6a736ada

    SHA512

    82ed8436517aa412064ebe426f4125aa485996650f863d88fb8e7cd4c18cc4394441fde4ab9d24606a558d56e07d4c6f185978fe55ca27dfcac6d25c824856a3

  • memory/1880-130-0x0000000000250000-0x0000000000251000-memory.dmp
    Filesize

    4KB

  • memory/1880-114-0x0000000000000000-mapping.dmp
  • memory/1880-133-0x0000000004A90000-0x0000000004A91000-memory.dmp
    Filesize

    4KB

  • memory/1880-132-0x0000000005090000-0x0000000005091000-memory.dmp
    Filesize

    4KB

  • memory/2056-117-0x0000000000000000-mapping.dmp
  • memory/2356-119-0x0000000000000000-mapping.dmp
  • memory/2496-121-0x0000000000000000-mapping.dmp
  • memory/2644-122-0x0000000000000000-mapping.dmp
  • memory/2664-123-0x0000000000000000-mapping.dmp
  • memory/2664-128-0x00000000009A0000-0x00000000009A1000-memory.dmp
    Filesize

    4KB