Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    04-12-2021 03:36

General

  • Target

    dab3afd4e25abdc582e6325f31257ee8.exe

  • Size

    487KB

  • MD5

    dab3afd4e25abdc582e6325f31257ee8

  • SHA1

    88648132d7f0b1fe59da88c696016e3b1e496fa5

  • SHA256

    e038cd85c9da66e9517bba1e3af819a7cb1cf068fe955b8e125273d1e0533c2b

  • SHA512

    e75b6166812fa7fb5852438a8ee8b2ad0ac48ced215c1bf8990f662efb63777164a731d899ffa743baf45671f90ef2af18c87ea43c5da57b4092536948b8bfc2

Malware Config

Extracted

Family

jester

Botnet

fanyze

C2

http://jesterdcuxzbey4xvlwwheoecpltru5be2mzuk4w7a7nrhckdjjhrbyd.onion/report/fanyze

https://api.anonfiles.com/upload?token=d26d620842507144

Mutex

f9999b04-5f6b-47c3-830e-f07171c30d02

Attributes
  • license_key

    9A554B1F2269B7AF81AF6B074943117B

Signatures

  • Jester

    Jester is an information stealer malware written in C#.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 11 IoCs
  • 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
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

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

  • 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.

  • Modifies system certificate store 2 TTPs 4 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dab3afd4e25abdc582e6325f31257ee8.exe
    "C:\Users\Admin\AppData\Local\Temp\dab3afd4e25abdc582e6325f31257ee8.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1116
    • C:\Users\Admin\AppData\Local\Temp\Jester.exe
      "C:\Users\Admin\AppData\Local\Temp\Jester.exe"
      2⤵
      • Executes dropped EXE
      • Accesses Microsoft Outlook profiles
      • Checks processor information in registry
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:1208
      • C:\Windows\system32\cmd.exe
        "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1316
        • C:\Windows\system32\chcp.com
          chcp 65001
          4⤵
            PID:1612
          • C:\Windows\system32\netsh.exe
            netsh wlan show profile
            4⤵
              PID:1640
            • C:\Windows\system32\findstr.exe
              findstr All
              4⤵
                PID:1532
            • C:\Users\Admin\AppData\Local\Temp\Tor\Tor.exe
              "C:\Users\Admin\AppData\Local\Temp\Tor\Tor.exe"
              3⤵
              • Executes dropped EXE
              • Loads dropped DLL
              PID:1740
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\Jester.exe"
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:1568
              • C:\Windows\system32\chcp.com
                chcp 65001
                4⤵
                  PID:572
                • C:\Windows\system32\PING.EXE
                  ping 127.0.0.1
                  4⤵
                  • Runs ping.exe
                  PID:1648

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\Jester.exe

            MD5

            b7061d79323a4795c17c4ddda7e46da4

            SHA1

            c529ceec64e01721078de2d710dc15d694918266

            SHA256

            3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853

            SHA512

            8c7e531c46f8a41021e73b2c10b19ab7ef90ea4f4d0ed8b2f65def2945be005aeae96c94fa5fde6225ed768fbc7c5bdb52654a6b5b2adaf88dc3700722675bf8

          • C:\Users\Admin\AppData\Local\Temp\Jester.exe

            MD5

            b7061d79323a4795c17c4ddda7e46da4

            SHA1

            c529ceec64e01721078de2d710dc15d694918266

            SHA256

            3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853

            SHA512

            8c7e531c46f8a41021e73b2c10b19ab7ef90ea4f4d0ed8b2f65def2945be005aeae96c94fa5fde6225ed768fbc7c5bdb52654a6b5b2adaf88dc3700722675bf8

          • C:\Users\Admin\AppData\Local\Temp\Tor\libcrypto-1_1.dll

            MD5

            3406f79392c47a72bed2f0067b3ce466

            SHA1

            a8e2940d61fc840441c4e2a835959d197929ffdf

            SHA256

            e4b6b2ca32b1e2ba26959ec7380c4f117418d3a724f60494ff3cb81505fbf43d

            SHA512

            930d794aa8715dcd23fafbead7fe2ec95d2863783b4c52279870cad93d5b6cf02ba8a13e2653d2bf731e9882bf63f43a7e44788ce47505346be3fe8e8b872fa4

          • C:\Users\Admin\AppData\Local\Temp\Tor\libevent-2-1-7.dll

            MD5

            a3bf8e33948d94d490d4613441685eee

            SHA1

            75ed7f6e2855a497f45b15270c3ad4aed6ad02e2

            SHA256

            91c812a33871e40b264761f1418e37ebfeb750fe61ca00cbcbe9f3769a8bf585

            SHA512

            c20ef2efcacb5f8c7e2464de7fde68bf610ab2e0608ff4daed9bf676996375db99bee7e3f26c5bd6cca63f9b2d889ed5460ec25004130887cd1a90b892be2b28

          • C:\Users\Admin\AppData\Local\Temp\Tor\libgcc_s_sjlj-1.dll

            MD5

            bd40ff3d0ce8d338a1fe4501cd8e9a09

            SHA1

            3aae8c33bf0ec9adf5fbf8a361445969de409b49

            SHA256

            ebda776a2a353f8f0690b1c7706b0cdaff3d23e1618515d45e451fc19440501c

            SHA512

            404fb3c107006b832b8e900f6e27873324cd0a7946cdccf4ffeea365a725892d929e8b160379af9782bcd6cfeb4c3c805740e21280b42bb2ce8f39f26792e5a1

          • C:\Users\Admin\AppData\Local\Temp\Tor\libssl-1_1.dll

            MD5

            9e3d55fbf890c6cbffd836f2aef4ba31

            SHA1

            715890ba3bda3431470cca4f4bc492c0f63fa138

            SHA256

            e6f4cf41373e8770c670cf5e85461f25385314ed9d8a2b37381bc84f5c0dd5c0

            SHA512

            9848f28fd96c21dd054cbf3e722e56373696c1f7803c137afc7c7203325d9738fa6b984d95cd49ff78a6d95c8f9406f869af3c3783901da3cc003e2b09497d65

          • C:\Users\Admin\AppData\Local\Temp\Tor\libssp-0.dll

            MD5

            b77328da7cead5f4623748a70727860d

            SHA1

            13b33722c55cca14025b90060e3227db57bf5327

            SHA256

            46541d9e28c18bc11267630920b97c42f104c258b55e2f62e4a02bcd5f03e0e7

            SHA512

            2f1bd13357078454203092ed5ddc23a8baa5e64202fba1e4f98eacf1c3c184616e527468a96ff36d98b9324426dddfa20b62b38cf95c6f5c0dc32513ebace9e2

          • C:\Users\Admin\AppData\Local\Temp\Tor\libwinpthread-1.dll

            MD5

            19d7cc4377f3c09d97c6da06fbabc7dc

            SHA1

            3a3ba8f397fb95ed5df22896b2c53a326662fcc9

            SHA256

            228fcfe9ed0574b8da32dd26eaf2f5dbaef0e1bd2535cb9b1635212ccdcbf84d

            SHA512

            23711285352cdec6815b5dd6e295ec50568fab7614706bc8d5328a4a0b62991c54b16126ed9e522471d2367b6f32fa35feb41bfa77b3402680d9a69f53962a4a

          • C:\Users\Admin\AppData\Local\Temp\Tor\tor.exe

            MD5

            67ab12cf6cabc14588e4f51b21c2134a

            SHA1

            32a4ff564f38bf4b62007e419f19c991e60d6e14

            SHA256

            f0aaae0364306bb7a4681d01935c96c2ac76b3576b7982990f86bcaf811a45ba

            SHA512

            2a1c67e9d23d6b050e35c5a8e159309cf598095239406c60a9f721fddc912e21afab7036cbd9f77197cc4241df5f8fa6aa9d7294762659178c6edeb4699d5bec

          • C:\Users\Admin\AppData\Local\Temp\Tor\zlib1.dll

            MD5

            6f98da9e33cd6f3dd60950413d3638ac

            SHA1

            e630bdf8cebc165aa81464ff20c1d55272d05675

            SHA256

            219d9d5bf0de4c2251439c89dd5f2959ee582e7f9f7d5ff66a29c88753a3a773

            SHA512

            2983faaf7f47a8f79a38122aa617e65e7deddd19ba9a98b62acf17b48e5308099b852f21aaf8ca6fe11e2cc76c36eed7ffa3307877d4e67b1659fe6e4475205c

          • \Users\Admin\AppData\Local\Temp\Jester.exe

            MD5

            b7061d79323a4795c17c4ddda7e46da4

            SHA1

            c529ceec64e01721078de2d710dc15d694918266

            SHA256

            3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853

            SHA512

            8c7e531c46f8a41021e73b2c10b19ab7ef90ea4f4d0ed8b2f65def2945be005aeae96c94fa5fde6225ed768fbc7c5bdb52654a6b5b2adaf88dc3700722675bf8

          • \Users\Admin\AppData\Local\Temp\Jester.exe

            MD5

            b7061d79323a4795c17c4ddda7e46da4

            SHA1

            c529ceec64e01721078de2d710dc15d694918266

            SHA256

            3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853

            SHA512

            8c7e531c46f8a41021e73b2c10b19ab7ef90ea4f4d0ed8b2f65def2945be005aeae96c94fa5fde6225ed768fbc7c5bdb52654a6b5b2adaf88dc3700722675bf8

          • \Users\Admin\AppData\Local\Temp\Jester.exe

            MD5

            b7061d79323a4795c17c4ddda7e46da4

            SHA1

            c529ceec64e01721078de2d710dc15d694918266

            SHA256

            3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853

            SHA512

            8c7e531c46f8a41021e73b2c10b19ab7ef90ea4f4d0ed8b2f65def2945be005aeae96c94fa5fde6225ed768fbc7c5bdb52654a6b5b2adaf88dc3700722675bf8

          • \Users\Admin\AppData\Local\Temp\Jester.exe

            MD5

            b7061d79323a4795c17c4ddda7e46da4

            SHA1

            c529ceec64e01721078de2d710dc15d694918266

            SHA256

            3168f18432106cfaf21f48598c1b26b1026de7a0bac69ae548c79dec67be7853

            SHA512

            8c7e531c46f8a41021e73b2c10b19ab7ef90ea4f4d0ed8b2f65def2945be005aeae96c94fa5fde6225ed768fbc7c5bdb52654a6b5b2adaf88dc3700722675bf8

          • \Users\Admin\AppData\Local\Temp\Tor\libcrypto-1_1.dll

            MD5

            3406f79392c47a72bed2f0067b3ce466

            SHA1

            a8e2940d61fc840441c4e2a835959d197929ffdf

            SHA256

            e4b6b2ca32b1e2ba26959ec7380c4f117418d3a724f60494ff3cb81505fbf43d

            SHA512

            930d794aa8715dcd23fafbead7fe2ec95d2863783b4c52279870cad93d5b6cf02ba8a13e2653d2bf731e9882bf63f43a7e44788ce47505346be3fe8e8b872fa4

          • \Users\Admin\AppData\Local\Temp\Tor\libevent-2-1-7.dll

            MD5

            a3bf8e33948d94d490d4613441685eee

            SHA1

            75ed7f6e2855a497f45b15270c3ad4aed6ad02e2

            SHA256

            91c812a33871e40b264761f1418e37ebfeb750fe61ca00cbcbe9f3769a8bf585

            SHA512

            c20ef2efcacb5f8c7e2464de7fde68bf610ab2e0608ff4daed9bf676996375db99bee7e3f26c5bd6cca63f9b2d889ed5460ec25004130887cd1a90b892be2b28

          • \Users\Admin\AppData\Local\Temp\Tor\libgcc_s_sjlj-1.dll

            MD5

            bd40ff3d0ce8d338a1fe4501cd8e9a09

            SHA1

            3aae8c33bf0ec9adf5fbf8a361445969de409b49

            SHA256

            ebda776a2a353f8f0690b1c7706b0cdaff3d23e1618515d45e451fc19440501c

            SHA512

            404fb3c107006b832b8e900f6e27873324cd0a7946cdccf4ffeea365a725892d929e8b160379af9782bcd6cfeb4c3c805740e21280b42bb2ce8f39f26792e5a1

          • \Users\Admin\AppData\Local\Temp\Tor\libssl-1_1.dll

            MD5

            9e3d55fbf890c6cbffd836f2aef4ba31

            SHA1

            715890ba3bda3431470cca4f4bc492c0f63fa138

            SHA256

            e6f4cf41373e8770c670cf5e85461f25385314ed9d8a2b37381bc84f5c0dd5c0

            SHA512

            9848f28fd96c21dd054cbf3e722e56373696c1f7803c137afc7c7203325d9738fa6b984d95cd49ff78a6d95c8f9406f869af3c3783901da3cc003e2b09497d65

          • \Users\Admin\AppData\Local\Temp\Tor\libssp-0.dll

            MD5

            b77328da7cead5f4623748a70727860d

            SHA1

            13b33722c55cca14025b90060e3227db57bf5327

            SHA256

            46541d9e28c18bc11267630920b97c42f104c258b55e2f62e4a02bcd5f03e0e7

            SHA512

            2f1bd13357078454203092ed5ddc23a8baa5e64202fba1e4f98eacf1c3c184616e527468a96ff36d98b9324426dddfa20b62b38cf95c6f5c0dc32513ebace9e2

          • \Users\Admin\AppData\Local\Temp\Tor\libwinpthread-1.dll

            MD5

            19d7cc4377f3c09d97c6da06fbabc7dc

            SHA1

            3a3ba8f397fb95ed5df22896b2c53a326662fcc9

            SHA256

            228fcfe9ed0574b8da32dd26eaf2f5dbaef0e1bd2535cb9b1635212ccdcbf84d

            SHA512

            23711285352cdec6815b5dd6e295ec50568fab7614706bc8d5328a4a0b62991c54b16126ed9e522471d2367b6f32fa35feb41bfa77b3402680d9a69f53962a4a

          • \Users\Admin\AppData\Local\Temp\Tor\zlib1.dll

            MD5

            6f98da9e33cd6f3dd60950413d3638ac

            SHA1

            e630bdf8cebc165aa81464ff20c1d55272d05675

            SHA256

            219d9d5bf0de4c2251439c89dd5f2959ee582e7f9f7d5ff66a29c88753a3a773

            SHA512

            2983faaf7f47a8f79a38122aa617e65e7deddd19ba9a98b62acf17b48e5308099b852f21aaf8ca6fe11e2cc76c36eed7ffa3307877d4e67b1659fe6e4475205c

          • memory/572-97-0x0000000000000000-mapping.dmp

          • memory/1116-55-0x00000000762D1000-0x00000000762D3000-memory.dmp

            Filesize

            8KB

          • memory/1208-65-0x000000001A800000-0x000000001A802000-memory.dmp

            Filesize

            8KB

          • memory/1208-63-0x00000000002D0000-0x00000000002D1000-memory.dmp

            Filesize

            4KB

          • memory/1208-60-0x0000000000000000-mapping.dmp

          • memory/1316-66-0x0000000000000000-mapping.dmp

          • memory/1532-69-0x0000000000000000-mapping.dmp

          • memory/1568-96-0x0000000000000000-mapping.dmp

          • memory/1612-67-0x0000000000000000-mapping.dmp

          • memory/1640-70-0x000007FEFC1D1000-0x000007FEFC1D3000-memory.dmp

            Filesize

            8KB

          • memory/1640-68-0x0000000000000000-mapping.dmp

          • memory/1648-98-0x0000000000000000-mapping.dmp

          • memory/1740-88-0x00000000750D0000-0x00000000751CB000-memory.dmp

            Filesize

            1004KB

          • memory/1740-91-0x00000000750D0000-0x00000000751CB000-memory.dmp

            Filesize

            1004KB

          • memory/1740-92-0x0000000074BB0000-0x0000000074EA5000-memory.dmp

            Filesize

            3.0MB

          • memory/1740-93-0x0000000074AC0000-0x0000000074BA6000-memory.dmp

            Filesize

            920KB

          • memory/1740-94-0x0000000074A90000-0x0000000074AB6000-memory.dmp

            Filesize

            152KB

          • memory/1740-95-0x00000000012C0000-0x00000000016D3000-memory.dmp

            Filesize

            4.1MB

          • memory/1740-90-0x00000000012C0000-0x00000000016D3000-memory.dmp

            Filesize

            4.1MB

          • memory/1740-89-0x0000000074A90000-0x0000000074AB6000-memory.dmp

            Filesize

            152KB

          • memory/1740-71-0x0000000000000000-mapping.dmp