Analysis

  • max time kernel
    46s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 18:49

General

  • Target

    faccfbbdc313a2f4b1d80119de898312b8fd84f586c4d5cf2482382910940f1b.exe

  • Size

    619KB

  • MD5

    aac0d0a0ee44507e808062e7490182ab

  • SHA1

    90c0bad36477ad99961eac4f5eab433821d286d1

  • SHA256

    faccfbbdc313a2f4b1d80119de898312b8fd84f586c4d5cf2482382910940f1b

  • SHA512

    f999ce49df95145891ba3d9e268556d61c50a6b0e75edc39909dac916546bae900b2f35538780b4f5dff005dafe5ec6d043cdb34068836d0ca43e9027aa80124

  • SSDEEP

    3072:sr85CdAnnnnnnnnnnnnnnnnttKR7EEusaY89j+sEoyV5/hH1ARqAnnnnnnnnnnn2:k9d2gR7Tusa99j+qouY2gR7Tusa99j+B

Malware Config

Signatures

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • 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.

  • Kills process with taskkill 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\faccfbbdc313a2f4b1d80119de898312b8fd84f586c4d5cf2482382910940f1b.exe
    "C:\Users\Admin\AppData\Local\Temp\faccfbbdc313a2f4b1d80119de898312b8fd84f586c4d5cf2482382910940f1b.exe"
    1⤵
    • Modifies system executable filetype association
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:980
    • C:\Users\Admin\AppData\Local\Temp\3582-490\faccfbbdc313a2f4b1d80119de898312b8fd84f586c4d5cf2482382910940f1b.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\faccfbbdc313a2f4b1d80119de898312b8fd84f586c4d5cf2482382910940f1b.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1040
      • C:\Windows\system32\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\3582-490\killpatcher.bat""
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:908
        • C:\Windows\system32\taskkill.exe
          TASKKILL /F /IM "faccfbbdc313a2f4b1d80119de898312b8fd84f586c4d5cf2482382910940f1b.exe"
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1488

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Change Default File Association

1
T1042

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\3582-490\faccfbbdc313a2f4b1d80119de898312b8fd84f586c4d5cf2482382910940f1b.exe
    Filesize

    579KB

    MD5

    3f64795b285d66ef47df701eedecd782

    SHA1

    213dd8b0a0fbbb3e22a04ab45e937487acef6a6b

    SHA256

    d0a95f9f6554b6d0dce5b30319c6343617f510a766d0f8aae3f8287c0db15179

    SHA512

    8797625438292bbf32ea58c29ea9a9ab000fb08aa60140a4d1aedf394bda6e01c2df0dae47cd2473af1af47c55e312ca2b0d783f361c49a995e24d280f0cc66f

  • C:\Users\Admin\AppData\Local\Temp\3582-490\faccfbbdc313a2f4b1d80119de898312b8fd84f586c4d5cf2482382910940f1b.exe
    Filesize

    579KB

    MD5

    3f64795b285d66ef47df701eedecd782

    SHA1

    213dd8b0a0fbbb3e22a04ab45e937487acef6a6b

    SHA256

    d0a95f9f6554b6d0dce5b30319c6343617f510a766d0f8aae3f8287c0db15179

    SHA512

    8797625438292bbf32ea58c29ea9a9ab000fb08aa60140a4d1aedf394bda6e01c2df0dae47cd2473af1af47c55e312ca2b0d783f361c49a995e24d280f0cc66f

  • C:\Users\Admin\AppData\Local\Temp\3582-490\killpatcher.bat
    Filesize

    171B

    MD5

    9c5a78a2826530ddb888e64ccf272902

    SHA1

    33df1874f829e88901f6374bb14b59cc62a12ce6

    SHA256

    1f04226648269db2a6a5db210b351c39dd0e9fb57d323b5598ac029c988d9f8e

    SHA512

    6f79f53e3b3aed16ab8b23e600d81aee92fcf62f47551fa95ebebe33f779ea535d4df223fa9cce4b84b005b0da181eca544495ff91dc7c9e75a32b894c8d6fb6

  • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE
    Filesize

    252KB

    MD5

    9e2b9928c89a9d0da1d3e8f4bd96afa7

    SHA1

    ec66cda99f44b62470c6930e5afda061579cde35

    SHA256

    8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

    SHA512

    2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

  • \Users\Admin\AppData\Local\Temp\3582-490\faccfbbdc313a2f4b1d80119de898312b8fd84f586c4d5cf2482382910940f1b.exe
    Filesize

    579KB

    MD5

    3f64795b285d66ef47df701eedecd782

    SHA1

    213dd8b0a0fbbb3e22a04ab45e937487acef6a6b

    SHA256

    d0a95f9f6554b6d0dce5b30319c6343617f510a766d0f8aae3f8287c0db15179

    SHA512

    8797625438292bbf32ea58c29ea9a9ab000fb08aa60140a4d1aedf394bda6e01c2df0dae47cd2473af1af47c55e312ca2b0d783f361c49a995e24d280f0cc66f

  • memory/908-62-0x0000000000000000-mapping.dmp
  • memory/980-54-0x0000000075FB1000-0x0000000075FB3000-memory.dmp
    Filesize

    8KB

  • memory/1040-56-0x0000000000000000-mapping.dmp
  • memory/1040-59-0x000007FEF42B0000-0x000007FEF4CD3000-memory.dmp
    Filesize

    10.1MB

  • memory/1040-60-0x000007FEF2E40000-0x000007FEF3ED6000-memory.dmp
    Filesize

    16.6MB

  • memory/1040-65-0x0000000000B76000-0x0000000000B95000-memory.dmp
    Filesize

    124KB

  • memory/1488-64-0x0000000000000000-mapping.dmp