Resubmissions

14-04-2023 09:46

230414-lrmgqaag8s 10

14-04-2023 09:39

230414-lm3yxaag6y 10

13-04-2023 06:38

230413-hd2spshh29 10

Analysis

  • max time kernel
    145s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    13-04-2023 06:38

General

  • Target

    bin-cr.exe

  • Size

    2.1MB

  • MD5

    50d9ad764597d6970f0480b58c4cf88e

  • SHA1

    72c210f8b80c755a6f5198ca6dea509872dee98a

  • SHA256

    57ba6e0a9c0804c9a3d239dc6fb2a6742f3a91b762741772dd3571e1cbec45f8

  • SHA512

    6d8bb209d50ec7a2349174255faa33696826d9c31eab7a22c63840afdc8711dd44bf42a35dad58c99f4ed1c057f4adaa913fe7e292afc1bee9482b5d08a02e07

  • SSDEEP

    24576:opwU6X5VuMFwg1SkQpRzFabsmVnR/ChijkYHGo5ExFNIprhIw0cNN4CJP6SSTzny:owVuMF5rbNWijJmA0cP42Jr

Malware Config

Extracted

Family

azorult

C2

http://dblg023.shop/bill1/index.php

Extracted

Family

quasar

Version

1.3.0.0

Botnet

APR

C2

19ap22.duckdns.org:100

Mutex

QSR_MUTEX_KuRNqiBWI63hLvM1k8

Attributes
  • encryption_key

    TMHR4yuB8MoZH2RLARpT

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Signatures

  • Azorult

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

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar payload 8 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 19 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 Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

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

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bin-cr.exe
    "C:\Users\Admin\AppData\Local\Temp\bin-cr.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1100
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1140
    • C:\Users\Admin\AppData\Local\Temp\bin-cr.exe
      C:\Users\Admin\AppData\Local\Temp\bin-cr.exe
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1640
      • C:\Users\Admin\AppData\Local\Temp\FB_F8F0.tmp.exe
        "C:\Users\Admin\AppData\Local\Temp\FB_F8F0.tmp.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Accesses Microsoft Outlook profiles
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        • outlook_office_path
        • outlook_win_path
        PID:896
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe" /c C:\Windows\system32\timeout.exe 3 & del "FB_F8F0.tmp.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1752
          • C:\Windows\SysWOW64\timeout.exe
            C:\Windows\system32\timeout.exe 3
            5⤵
            • Delays execution with timeout.exe
            PID:1900
      • C:\Users\Admin\AppData\Local\Temp\FB_F9CB.tmp.exe
        "C:\Users\Admin\AppData\Local\Temp\FB_F9CB.tmp.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1620

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\FB_F8F0.tmp.exe

    Filesize

    112KB

    MD5

    4eac73bc748b791e7226f2437bcc7373

    SHA1

    d42622daea1be5854c63be3def25152bd8dfb632

    SHA256

    c33105209acd4b1f2cf3280624beb53cf5ca7232bea0ab225089fa976e8660f7

    SHA512

    b1ef3d3b93c902c55a8a2e235a993b6aadd6cd2814539864bb19cf80aa65fc77979dc56b32ad8bac8738e93ecf53ee4162268cda6e0db9aceacddefabb1434fe

  • C:\Users\Admin\AppData\Local\Temp\FB_F8F0.tmp.exe

    Filesize

    112KB

    MD5

    4eac73bc748b791e7226f2437bcc7373

    SHA1

    d42622daea1be5854c63be3def25152bd8dfb632

    SHA256

    c33105209acd4b1f2cf3280624beb53cf5ca7232bea0ab225089fa976e8660f7

    SHA512

    b1ef3d3b93c902c55a8a2e235a993b6aadd6cd2814539864bb19cf80aa65fc77979dc56b32ad8bac8738e93ecf53ee4162268cda6e0db9aceacddefabb1434fe

  • C:\Users\Admin\AppData\Local\Temp\FB_F8F0.tmp.exe

    Filesize

    112KB

    MD5

    4eac73bc748b791e7226f2437bcc7373

    SHA1

    d42622daea1be5854c63be3def25152bd8dfb632

    SHA256

    c33105209acd4b1f2cf3280624beb53cf5ca7232bea0ab225089fa976e8660f7

    SHA512

    b1ef3d3b93c902c55a8a2e235a993b6aadd6cd2814539864bb19cf80aa65fc77979dc56b32ad8bac8738e93ecf53ee4162268cda6e0db9aceacddefabb1434fe

  • C:\Users\Admin\AppData\Local\Temp\FB_F9CB.tmp.exe

    Filesize

    348KB

    MD5

    c3cd641d73ea502521a565e9f0c07ac3

    SHA1

    685fa71f8b7528f8365103241b8ff85d9e58eddc

    SHA256

    110ae9a133457252d8305ef438e614b756ac827bb8d6bde4c57c9b2d8c8c7fc3

    SHA512

    8cfa85526d97b12367bb9c115cebf5e9bfe2d01b956cf469c8d92561a44333950bcd9de8b225abd335de7b1c8c8683c572d74e5e76c46c8a58a508a0d1072ed2

  • C:\Users\Admin\AppData\Local\Temp\FB_F9CB.tmp.exe

    Filesize

    348KB

    MD5

    c3cd641d73ea502521a565e9f0c07ac3

    SHA1

    685fa71f8b7528f8365103241b8ff85d9e58eddc

    SHA256

    110ae9a133457252d8305ef438e614b756ac827bb8d6bde4c57c9b2d8c8c7fc3

    SHA512

    8cfa85526d97b12367bb9c115cebf5e9bfe2d01b956cf469c8d92561a44333950bcd9de8b225abd335de7b1c8c8683c572d74e5e76c46c8a58a508a0d1072ed2

  • \Users\Admin\AppData\Local\Temp\846C1246\api-ms-win-crt-convert-l1-1-0.dll

    Filesize

    21KB

    MD5

    72e28c902cd947f9a3425b19ac5a64bd

    SHA1

    9b97f7a43d43cb0f1b87fc75fef7d9eeea11e6f7

    SHA256

    3cc1377d495260c380e8d225e5ee889cbb2ed22e79862d4278cfa898e58e44d1

    SHA512

    58ab6fedce2f8ee0970894273886cb20b10d92979b21cda97ae0c41d0676cc0cd90691c58b223bce5f338e0718d1716e6ce59a106901fe9706f85c3acf7855ff

  • \Users\Admin\AppData\Local\Temp\846C1246\api-ms-win-crt-environment-l1-1-0.dll

    Filesize

    18KB

    MD5

    ac290dad7cb4ca2d93516580452eda1c

    SHA1

    fa949453557d0049d723f9615e4f390010520eda

    SHA256

    c0d75d1887c32a1b1006b3cffc29df84a0d73c435cdcb404b6964be176a61382

    SHA512

    b5e2b9f5a9dd8a482169c7fc05f018ad8fe6ae27cb6540e67679272698bfca24b2ca5a377fa61897f328b3deac10237cafbd73bc965bf9055765923aba9478f8

  • \Users\Admin\AppData\Local\Temp\846C1246\api-ms-win-crt-filesystem-l1-1-0.dll

    Filesize

    19KB

    MD5

    aec2268601470050e62cb8066dd41a59

    SHA1

    363ed259905442c4e3b89901bfd8a43b96bf25e4

    SHA256

    7633774effe7c0add6752ffe90104d633fc8262c87871d096c2fc07c20018ed2

    SHA512

    0c14d160bfa3ac52c35ff2f2813b85f8212c5f3afbcfe71a60ccc2b9e61e51736f0bf37ca1f9975b28968790ea62ed5924fae4654182f67114bd20d8466c4b8f

  • \Users\Admin\AppData\Local\Temp\846C1246\api-ms-win-crt-heap-l1-1-0.dll

    Filesize

    18KB

    MD5

    93d3da06bf894f4fa21007bee06b5e7d

    SHA1

    1e47230a7ebcfaf643087a1929a385e0d554ad15

    SHA256

    f5cf623ba14b017af4aec6c15eee446c647ab6d2a5dee9d6975adc69994a113d

    SHA512

    72bd6d46a464de74a8dac4c346c52d068116910587b1c7b97978df888925216958ce77be1ae049c3dccf5bf3fffb21bc41a0ac329622bc9bbc190df63abb25c6

  • \Users\Admin\AppData\Local\Temp\846C1246\api-ms-win-crt-locale-l1-1-0.dll

    Filesize

    18KB

    MD5

    a2f2258c32e3ba9abf9e9e38ef7da8c9

    SHA1

    116846ca871114b7c54148ab2d968f364da6142f

    SHA256

    565a2eec5449eeeed68b430f2e9b92507f979174f9c9a71d0c36d58b96051c33

    SHA512

    e98cbc8d958e604effa614a3964b3d66b6fc646bdca9aa679ea5e4eb92ec0497b91485a40742f3471f4ff10de83122331699edc56a50f06ae86f21fad70953fe

  • \Users\Admin\AppData\Local\Temp\846C1246\api-ms-win-crt-math-l1-1-0.dll

    Filesize

    28KB

    MD5

    8b0ba750e7b15300482ce6c961a932f0

    SHA1

    71a2f5d76d23e48cef8f258eaad63e586cfc0e19

    SHA256

    bece7bab83a5d0ec5c35f0841cbbf413e01ac878550fbdb34816ed55185dcfed

    SHA512

    fb646cdcdb462a347ed843312418f037f3212b2481f3897a16c22446824149ee96eb4a4b47a903ca27b1f4d7a352605d4930df73092c380e3d4d77ce4e972c5a

  • \Users\Admin\AppData\Local\Temp\846C1246\api-ms-win-crt-multibyte-l1-1-0.dll

    Filesize

    25KB

    MD5

    35fc66bd813d0f126883e695664e7b83

    SHA1

    2fd63c18cc5dc4defc7ea82f421050e668f68548

    SHA256

    66abf3a1147751c95689f5bc6a259e55281ec3d06d3332dd0ba464effa716735

    SHA512

    65f8397de5c48d3df8ad79baf46c1d3a0761f727e918ae63612ea37d96adf16cc76d70d454a599f37f9ba9b4e2e38ebc845df4c74fc1e1131720fd0dcb881431

  • \Users\Admin\AppData\Local\Temp\846C1246\api-ms-win-crt-runtime-l1-1-0.dll

    Filesize

    22KB

    MD5

    41a348f9bedc8681fb30fa78e45edb24

    SHA1

    66e76c0574a549f293323dd6f863a8a5b54f3f9b

    SHA256

    c9bbc07a033bab6a828ecc30648b501121586f6f53346b1cd0649d7b648ea60b

    SHA512

    8c2cb53ccf9719de87ee65ed2e1947e266ec7e8343246def6429c6df0dc514079f5171acd1aa637276256c607f1063144494b992d4635b01e09ddea6f5eef204

  • \Users\Admin\AppData\Local\Temp\846C1246\api-ms-win-crt-stdio-l1-1-0.dll

    Filesize

    23KB

    MD5

    fefb98394cb9ef4368da798deab00e21

    SHA1

    316d86926b558c9f3f6133739c1a8477b9e60740

    SHA256

    b1e702b840aebe2e9244cd41512d158a43e6e9516cd2015a84eb962fa3ff0df7

    SHA512

    57476fe9b546e4cafb1ef4fd1cbd757385ba2d445d1785987afb46298acbe4b05266a0c4325868bc4245c2f41e7e2553585bfb5c70910e687f57dac6a8e911e8

  • \Users\Admin\AppData\Local\Temp\846C1246\api-ms-win-crt-string-l1-1-0.dll

    Filesize

    22KB

    MD5

    404604cd100a1e60dfdaf6ecf5ba14c0

    SHA1

    58469835ab4b916927b3cabf54aee4f380ff6748

    SHA256

    73cc56f20268bfb329ccd891822e2e70dd70fe21fc7101deb3fa30c34a08450c

    SHA512

    da024ccb50d4a2a5355b7712ba896df850cee57aa4ada33aad0bae6960bcd1e5e3cee9488371ab6e19a2073508fbb3f0b257382713a31bc0947a4bf1f7a20be4

  • \Users\Admin\AppData\Local\Temp\846C1246\api-ms-win-crt-time-l1-1-0.dll

    Filesize

    20KB

    MD5

    849f2c3ebf1fcba33d16153692d5810f

    SHA1

    1f8eda52d31512ebfdd546be60990b95c8e28bfb

    SHA256

    69885fd581641b4a680846f93c2dd21e5dd8e3ba37409783bc5b3160a919cb5d

    SHA512

    44dc4200a653363c9a1cb2bdd3da5f371f7d1fb644d1ce2ff5fe57d939b35130ac8ae27a3f07b82b3428233f07f974628027b0e6b6f70f7b2a8d259be95222f5

  • \Users\Admin\AppData\Local\Temp\846C1246\api-ms-win-crt-utility-l1-1-0.dll

    Filesize

    18KB

    MD5

    b52a0ca52c9c207874639b62b6082242

    SHA1

    6fb845d6a82102ff74bd35f42a2844d8c450413b

    SHA256

    a1d1d6b0cb0a8421d7c0d1297c4c389c95514493cd0a386b49dc517ac1b9a2b0

    SHA512

    18834d89376d703bd461edf7738eb723ad8d54cb92acc9b6f10cbb55d63db22c2a0f2f3067fe2cc6feb775db397030606608ff791a46bf048016a1333028d0a4

  • \Users\Admin\AppData\Local\Temp\846C1246\mozglue.dll

    Filesize

    135KB

    MD5

    9e682f1eb98a9d41468fc3e50f907635

    SHA1

    85e0ceca36f657ddf6547aa0744f0855a27527ee

    SHA256

    830533bb569594ec2f7c07896b90225006b90a9af108f49d6fb6bebd02428b2d

    SHA512

    230230722d61ac1089fabf3f2decfa04f9296498f8e2a2a49b1527797dca67b5a11ab8656f04087acadf873fa8976400d57c77c404eba4aff89d92b9986f32ed

  • \Users\Admin\AppData\Local\Temp\846C1246\msvcp140.dll

    Filesize

    429KB

    MD5

    109f0f02fd37c84bfc7508d4227d7ed5

    SHA1

    ef7420141bb15ac334d3964082361a460bfdb975

    SHA256

    334e69ac9367f708ce601a6f490ff227d6c20636da5222f148b25831d22e13d4

    SHA512

    46eb62b65817365c249b48863d894b4669e20fcb3992e747cd5c9fdd57968e1b2cf7418d1c9340a89865eadda362b8db51947eb4427412eb83b35994f932fd39

  • \Users\Admin\AppData\Local\Temp\846C1246\nss3.dll

    Filesize

    1.2MB

    MD5

    556ea09421a0f74d31c4c0a89a70dc23

    SHA1

    f739ba9b548ee64b13eb434a3130406d23f836e3

    SHA256

    f0e6210d4a0d48c7908d8d1c270449c91eb4523e312a61256833bfeaf699abfb

    SHA512

    2481fc80dffa8922569552c3c3ebaef8d0341b80427447a14b291ec39ea62ab9c05a75e85eef5ea7f857488cab1463c18586f9b076e2958c5a314e459045ede2

  • \Users\Admin\AppData\Local\Temp\846C1246\vcruntime140.dll

    Filesize

    81KB

    MD5

    7587bf9cb4147022cd5681b015183046

    SHA1

    f2106306a8f6f0da5afb7fc765cfa0757ad5a628

    SHA256

    c40bb03199a2054dabfc7a8e01d6098e91de7193619effbd0f142a7bf031c14d

    SHA512

    0b63e4979846ceba1b1ed8470432ea6aa18cca66b5f5322d17b14bc0dfa4b2ee09ca300a016e16a01db5123e4e022820698f46d9bad1078bd24675b4b181e91f

  • \Users\Admin\AppData\Local\Temp\FB_F8F0.tmp.exe

    Filesize

    112KB

    MD5

    4eac73bc748b791e7226f2437bcc7373

    SHA1

    d42622daea1be5854c63be3def25152bd8dfb632

    SHA256

    c33105209acd4b1f2cf3280624beb53cf5ca7232bea0ab225089fa976e8660f7

    SHA512

    b1ef3d3b93c902c55a8a2e235a993b6aadd6cd2814539864bb19cf80aa65fc77979dc56b32ad8bac8738e93ecf53ee4162268cda6e0db9aceacddefabb1434fe

  • \Users\Admin\AppData\Local\Temp\FB_F8F0.tmp.exe

    Filesize

    112KB

    MD5

    4eac73bc748b791e7226f2437bcc7373

    SHA1

    d42622daea1be5854c63be3def25152bd8dfb632

    SHA256

    c33105209acd4b1f2cf3280624beb53cf5ca7232bea0ab225089fa976e8660f7

    SHA512

    b1ef3d3b93c902c55a8a2e235a993b6aadd6cd2814539864bb19cf80aa65fc77979dc56b32ad8bac8738e93ecf53ee4162268cda6e0db9aceacddefabb1434fe

  • \Users\Admin\AppData\Local\Temp\FB_F9CB.tmp.exe

    Filesize

    348KB

    MD5

    c3cd641d73ea502521a565e9f0c07ac3

    SHA1

    685fa71f8b7528f8365103241b8ff85d9e58eddc

    SHA256

    110ae9a133457252d8305ef438e614b756ac827bb8d6bde4c57c9b2d8c8c7fc3

    SHA512

    8cfa85526d97b12367bb9c115cebf5e9bfe2d01b956cf469c8d92561a44333950bcd9de8b225abd335de7b1c8c8683c572d74e5e76c46c8a58a508a0d1072ed2

  • memory/896-226-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/896-177-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/1100-57-0x0000000000A50000-0x0000000000AE2000-memory.dmp

    Filesize

    584KB

  • memory/1100-56-0x0000000000860000-0x00000000008AE000-memory.dmp

    Filesize

    312KB

  • memory/1100-58-0x0000000004C90000-0x0000000004CD0000-memory.dmp

    Filesize

    256KB

  • memory/1100-54-0x0000000000B70000-0x0000000000D8E000-memory.dmp

    Filesize

    2.1MB

  • memory/1100-55-0x0000000004DF0000-0x0000000004F5E000-memory.dmp

    Filesize

    1.4MB

  • memory/1100-63-0x0000000004C90000-0x0000000004CD0000-memory.dmp

    Filesize

    256KB

  • memory/1140-62-0x00000000026A0000-0x00000000026E0000-memory.dmp

    Filesize

    256KB

  • memory/1140-61-0x00000000026A0000-0x00000000026E0000-memory.dmp

    Filesize

    256KB

  • memory/1620-92-0x0000000004E30000-0x0000000004E70000-memory.dmp

    Filesize

    256KB

  • memory/1620-228-0x0000000004E30000-0x0000000004E70000-memory.dmp

    Filesize

    256KB

  • memory/1620-91-0x00000000003C0000-0x000000000041E000-memory.dmp

    Filesize

    376KB

  • memory/1640-69-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1640-67-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1640-65-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1640-89-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1640-68-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1640-73-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1640-70-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1640-71-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB

  • memory/1640-66-0x0000000000400000-0x0000000000478000-memory.dmp

    Filesize

    480KB