Resubmissions
10-04-2024 02:56
240410-dff7kacd24 1010-04-2024 02:56
240410-de3zyacc96 1010-04-2024 02:56
240410-de3deaff6t 1010-04-2024 02:56
240410-de23msff6s 1009-09-2023 14:35
230909-rx47lsbh52 10Analysis
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max time kernel
359s -
max time network
542s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
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submitted
10-04-2024 02:56
General
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Target
a245b51ab711d20b944edca262659dba3a0ee6d1590c8f55a858ce82e2a1c647exe_JC.exe
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Size
119KB
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MD5
369204590ce91e77109e21a298753522
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SHA1
e981f0c86c42e9e8fcbc7dcff0e05c35887a3869
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SHA256
a245b51ab711d20b944edca262659dba3a0ee6d1590c8f55a858ce82e2a1c647
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SHA512
bf4367a692eb1f4c31533ee1391cfc1708c75bf726dd5287ac0fa2e602664fa3a74458ded18c1831db16f0462b202f79b10d0f82f3bcb98423a460002e04cf32
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SSDEEP
3072:P56Q4BB1q/hJcq4YZRKsySYSLLx9yLjj6TG6WVt9bm+EFyW43LORzMJS/3:Fha6BuQdwLKTGLt9bmhD4q1Mc
Malware Config
Signatures
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Detect Gurcu Stealer V3 payload 3 IoCs
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Gurcu, WhiteSnake
Gurcu is a malware stealer written in C#.
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Deletes itself 1 IoCs
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Executes dropped EXE 2 IoCs
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Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 6 IoCs
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Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Modifies system certificate store 2 TTPs 6 IoCs
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Runs ping.exe 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious use of AdjustPrivilegeToken 3 IoCs
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Suspicious use of WriteProcessMemory 24 IoCs
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Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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outlook_office_path 1 IoCs
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outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\a245b51ab711d20b944edca262659dba3a0ee6d1590c8f55a858ce82e2a1c647exe_JC.exe"C:\Users\Admin\AppData\Local\Temp\a245b51ab711d20b944edca262659dba3a0ee6d1590c8f55a858ce82e2a1c647exe_JC.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "a245b51ab711d20b944edca262659dba3a0ee6d1590c8f55a858ce82e2a1c647exe_JC" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\EsetSecurity\a245b51ab711d20b944edca262659dba3a0ee6d1590c8f55a858ce82e2a1c647exe_JC.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\a245b51ab711d20b944edca262659dba3a0ee6d1590c8f55a858ce82e2a1c647exe_JC.exe" &&START "" "C:\Users\Admin\AppData\Local\EsetSecurity\a245b51ab711d20b944edca262659dba3a0ee6d1590c8f55a858ce82e2a1c647exe_JC.exe"2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\chcp.comchcp 650013⤵
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C:\Windows\system32\PING.EXEping 127.0.0.13⤵
- Runs ping.exe
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C:\Windows\system32\schtasks.exeschtasks /create /tn "a245b51ab711d20b944edca262659dba3a0ee6d1590c8f55a858ce82e2a1c647exe_JC" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\EsetSecurity\a245b51ab711d20b944edca262659dba3a0ee6d1590c8f55a858ce82e2a1c647exe_JC.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\EsetSecurity\a245b51ab711d20b944edca262659dba3a0ee6d1590c8f55a858ce82e2a1c647exe_JC.exe"C:\Users\Admin\AppData\Local\EsetSecurity\a245b51ab711d20b944edca262659dba3a0ee6d1590c8f55a858ce82e2a1c647exe_JC.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 2664 -s 32204⤵
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C:\Windows\system32\taskeng.exetaskeng.exe {8C41D59A-5C0F-4044-B8EC-93D7FFC36425} S-1-5-21-3787592910-3720486031-2929222812-1000:HSNHLVYA\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\EsetSecurity\a245b51ab711d20b944edca262659dba3a0ee6d1590c8f55a858ce82e2a1c647exe_JC.exeC:\Users\Admin\AppData\Local\EsetSecurity\a245b51ab711d20b944edca262659dba3a0ee6d1590c8f55a858ce82e2a1c647exe_JC.exe2⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 2096 -s 32163⤵
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
68KB
MD529f65ba8e88c063813cc50a4ea544e93
SHA105a7040d5c127e68c25d81cc51271ffb8bef3568
SHA2561ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
SHA512e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa
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Filesize
344B
MD5dc397c64d3d6d3afd6eebdafcf30787d
SHA1e7e5a13e74407600c57652009eb79fbf38479d11
SHA2568444f721fc4039dd54597f87b07e332203d18e0d394071447f69801e02520ed6
SHA512fb9ca3a06b9383cba1b71a3e7df3547f277a32e25c7a636a35774160e0acb97f84a4d993dab575fa878559af1416609cfe9763a49876e1a0cbd8b2df33f10434
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Filesize
344B
MD592edaa14cc26105300c4301ea596edec
SHA16ac9730c3c718df3ab41b66afe6dad24daec62f6
SHA2563472421fdcca2d8de35f480943f1c55beea1c11d6993e29c1df202c641c30ed7
SHA512ea940f218f1783ef0f3ae7732ddf167a2fe2bd5351b027f2b35f3b587b1c56c5ef98fc2ab7451824d2f7c48a4759d4cd1cb191181d3fbf30c45ebf98da497315
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Filesize
4B
MD5ecb287ff763c169694f682af52c1f309
SHA187472edf63b780b71c01a9eb57221e5ce2021a7e
SHA25685e88d473301ed963019bf2225cec1ac4883463191ea9d77ee19dbb34a4fc44e
SHA5129bebd72584d6673c2a853cbb7e9ec67fe7c1cf60306aa20d0d56dad35365e22e5b1ff4c967e63bde0c788ab8b821e2136cc294ab6d0033552b5f6ea1cdc2f4ef
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Filesize
119KB
MD5369204590ce91e77109e21a298753522
SHA1e981f0c86c42e9e8fcbc7dcff0e05c35887a3869
SHA256a245b51ab711d20b944edca262659dba3a0ee6d1590c8f55a858ce82e2a1c647
SHA512bf4367a692eb1f4c31533ee1391cfc1708c75bf726dd5287ac0fa2e602664fa3a74458ded18c1831db16f0462b202f79b10d0f82f3bcb98423a460002e04cf32
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Filesize
65KB
MD5ac05d27423a85adc1622c714f2cb6184
SHA1b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA256c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
SHA5126d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d
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Filesize
177KB
MD5435a9ac180383f9fa094131b173a2f7b
SHA176944ea657a9db94f9a4bef38f88c46ed4166983
SHA25667dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
SHA5121a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a
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Filesize
82B
MD51d2c0986ba3c3af924ad4b8776a45190
SHA1e4199810598c592fb4304eb37cf90d2ce2065a11
SHA2568f8cc850ea7e227ba100ad943c4c9000857e39d66a0aa6a245f599e6868d04c2
SHA512275f4de2999bc947be2a179aab2ed6e33d7591d3464d3ba43d3ca1b6fc0ada3aae2090f39dc3620bfcfa57824e26aba7b401145137f87115bbd4c3589a291524
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Filesize
144KB
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Filesize
9.9MB
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Filesize
9.9MB
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Filesize
512KB
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Filesize
9.9MB
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Filesize
9.9MB
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Filesize
144KB
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Filesize
512KB
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Filesize
9.9MB
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Filesize
9.9MB
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Filesize
512KB