Analysis

  • max time kernel
    102s
  • max time network
    129s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    22-04-2021 09:03

General

  • Target

    G019 & G022 SPEC SHEET.exe

Malware Config

Extracted

Family

oski

C2

45.144.225.118

Extracted

Family

azorult

C2

http://lexusbiscuit.com/OiuBn/index.php

Signatures

  • Azorult

    An information stealer that was first discovered in 2016, targeting browsing history and passwords.

  • Oski

    Oski is an infostealer targeting browser data, crypto wallets.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 9 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • NSIS installer 6 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Kills process with taskkill 1 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\G019 & G022 SPEC SHEET.exe
    "C:\Users\Admin\AppData\Local\Temp\G019 & G022 SPEC SHEET.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:3152
    • C:\Users\Admin\AppData\Local\Temp\G019 & G022 SPEC SHEET.exe
      "C:\Users\Admin\AppData\Local\Temp\G019 & G022 SPEC SHEET.exe"
      2⤵
      • Loads dropped DLL
      • Checks processor information in registry
      • NTFS ADS
      • Suspicious use of WriteProcessMemory
      PID:3704
      • C:\ProgramData\956355477847.exe
        "C:\ProgramData\956355477847.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:4092
        • C:\ProgramData\956355477847.exe
          "C:\ProgramData\956355477847.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          PID:3376
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c taskkill /pid 3704 & erase C:\Users\Admin\AppData\Local\Temp\G019 & G022 SPEC SHEET.exe & RD /S /Q C:\\ProgramData\\151132557526115\\* & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3416
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /pid 3704
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:740

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

5
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

5
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\956355477847.exe
    MD5

    719969e204f366a74528dd16a0c47239

    SHA1

    5feff5edf982b227be840c7c4bdd3f8695ab520e

    SHA256

    d6bce670eedb3e82eaceb6ec24f159f3e8f805b42a2ff61c688edb686e0ff490

    SHA512

    459ca353837d9810168410e5d92a2ee4c5934c894d0d666c9d519a0a6ae9cba841c9c074f9ca5d27774f15ba64366ff9a0466951c3054e7b40f4934fc58f6f33

  • C:\ProgramData\956355477847.exe
    MD5

    719969e204f366a74528dd16a0c47239

    SHA1

    5feff5edf982b227be840c7c4bdd3f8695ab520e

    SHA256

    d6bce670eedb3e82eaceb6ec24f159f3e8f805b42a2ff61c688edb686e0ff490

    SHA512

    459ca353837d9810168410e5d92a2ee4c5934c894d0d666c9d519a0a6ae9cba841c9c074f9ca5d27774f15ba64366ff9a0466951c3054e7b40f4934fc58f6f33

  • C:\ProgramData\956355477847.exe
    MD5

    719969e204f366a74528dd16a0c47239

    SHA1

    5feff5edf982b227be840c7c4bdd3f8695ab520e

    SHA256

    d6bce670eedb3e82eaceb6ec24f159f3e8f805b42a2ff61c688edb686e0ff490

    SHA512

    459ca353837d9810168410e5d92a2ee4c5934c894d0d666c9d519a0a6ae9cba841c9c074f9ca5d27774f15ba64366ff9a0466951c3054e7b40f4934fc58f6f33

  • \ProgramData\mozglue.dll
    MD5

    8f73c08a9660691143661bf7332c3c27

    SHA1

    37fa65dd737c50fda710fdbde89e51374d0c204a

    SHA256

    3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

    SHA512

    0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

  • \ProgramData\nss3.dll
    MD5

    bfac4e3c5908856ba17d41edcd455a51

    SHA1

    8eec7e888767aa9e4cca8ff246eb2aacb9170428

    SHA256

    e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

    SHA512

    2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

  • \ProgramData\sqlite3.dll
    MD5

    e477a96c8f2b18d6b5c27bde49c990bf

    SHA1

    e980c9bf41330d1e5bd04556db4646a0210f7409

    SHA256

    16574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660

    SHA512

    335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c

  • \Users\Admin\AppData\Local\Temp\8093A008\mozglue.dll
    MD5

    9e682f1eb98a9d41468fc3e50f907635

    SHA1

    85e0ceca36f657ddf6547aa0744f0855a27527ee

    SHA256

    830533bb569594ec2f7c07896b90225006b90a9af108f49d6fb6bebd02428b2d

    SHA512

    230230722d61ac1089fabf3f2decfa04f9296498f8e2a2a49b1527797dca67b5a11ab8656f04087acadf873fa8976400d57c77c404eba4aff89d92b9986f32ed

  • \Users\Admin\AppData\Local\Temp\8093A008\msvcp140.dll
    MD5

    109f0f02fd37c84bfc7508d4227d7ed5

    SHA1

    ef7420141bb15ac334d3964082361a460bfdb975

    SHA256

    334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

    SHA512

    46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

  • \Users\Admin\AppData\Local\Temp\8093A008\nss3.dll
    MD5

    556ea09421a0f74d31c4c0a89a70dc23

    SHA1

    f739ba9b548ee64b13eb434a3130406d23f836e3

    SHA256

    f0e6210d4a0d48c7908d8d1c270449c91eb4523e312a61256833bfeaf699abfb

    SHA512

    2481fc80dffa8922569552c3c3ebaef8d0341b80427447a14b291ec39ea62ab9c05a75e85eef5ea7f857488cab1463c18586f9b076e2958c5a314e459045ede2

  • \Users\Admin\AppData\Local\Temp\8093A008\vcruntime140.dll
    MD5

    7587bf9cb4147022cd5681b015183046

    SHA1

    f2106306a8f6f0da5afb7fc765cfa0757ad5a628

    SHA256

    c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

    SHA512

    0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

  • \Users\Admin\AppData\Local\Temp\nsi1024.tmp\ih00nh5vdje.dll
    MD5

    75827fcdd708129b5c89d50bfadaea2b

    SHA1

    ba5358cb7b09a03822285102f169a8746c23afc5

    SHA256

    1d170e17ca916be17c00fa577c34cfdab0b85d19f1b2511fb28032984aac1563

    SHA512

    c03fd009270a0491d07881db52b8dc5b56fe90af939d3bbb4a1c40b1a3b20f160f70e25ce863772da2197c438b7fa1dca9145c521f8ff736f1b016ca744637a3

  • \Users\Admin\AppData\Local\Temp\nsr261D.tmp\6vw4w93.dll
    MD5

    21d6078eafde0f1eaaf1f80d8c5602cd

    SHA1

    99b147793badc5d138b7b870ddceb5474975391c

    SHA256

    6df1241eb9c87a5cb4ae26a7bf94b53ab41e20bad8d1fff241cd0d301d337803

    SHA512

    9f4cd37521fdd3208345debfc1276c8657c5f5d46e339c4a44496b041dea4fc15447ba3c231785c844512ea3d05ecd03b37a1667aaebf1504a12c7e421769465

  • memory/740-126-0x0000000000000000-mapping.dmp
  • memory/3152-116-0x00000000009D0000-0x00000000009D2000-memory.dmp
    Filesize

    8KB

  • memory/3376-128-0x000000000041A684-mapping.dmp
  • memory/3376-130-0x0000000000400000-0x0000000000420000-memory.dmp
    Filesize

    128KB

  • memory/3416-125-0x0000000000000000-mapping.dmp
  • memory/3704-115-0x000000000040717B-mapping.dmp
  • memory/3704-117-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/4092-127-0x0000000000950000-0x0000000000952000-memory.dmp
    Filesize

    8KB

  • memory/4092-121-0x0000000000000000-mapping.dmp