Resubmissions
10-04-2024 02:29
240410-cy22baca54 1010-04-2024 02:29
240410-cy2esafc8z 1010-04-2024 02:29
240410-cy1s9aca52 1010-04-2024 02:29
240410-cy1hgsfc8x 1014-10-2023 01:29
231014-bwm9pshg4t 10Analysis
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max time kernel
837s -
max time network
837s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
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submitted
10-04-2024 02:29
General
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Target
D5f0a5d17c7420fe49da676.exe
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Size
250KB
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MD5
24a8408510d9b173b9dc078574261d28
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SHA1
2ecfc788687aadbd9cc42ea311210f7cde5fa064
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SHA256
67474d56996cadf242c087aeac455357bd33e79545538eeade15ae259fb3e869
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SHA512
de51ce9f9df68a688e7a8092aa70210ba07a9d7738ea731e2e8a7e724b3fc73cd77e83f63d675f6a1def373b437af533e1fdc688ddf1bfb94477277a8e74a5a9
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SSDEEP
6144:PY6+lYxyWoekN4B2We2TxT8jWHgf8YJkVHC++VeQPBZnq0LZYSwFxQx9tjQ9bMXq:PxpmWHgf8Y6/Qp1nLiDKhFX
Malware Config
Signatures
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Detect Gurcu Stealer V3 payload 5 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\D5f0a5d17c7420fe49da676.exe"C:\Users\Admin\AppData\Local\Temp\D5f0a5d17c7420fe49da676.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 "D5f0a5d17c7420fe49da676" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\EsetSecurity\D5f0a5d17c7420fe49da676.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\D5f0a5d17c7420fe49da676.exe" &&START "" "C:\Users\Admin\AppData\Local\EsetSecurity\D5f0a5d17c7420fe49da676.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 "D5f0a5d17c7420fe49da676" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\EsetSecurity\D5f0a5d17c7420fe49da676.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\EsetSecurity\D5f0a5d17c7420fe49da676.exe"C:\Users\Admin\AppData\Local\EsetSecurity\D5f0a5d17c7420fe49da676.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 2772 -s 29924⤵
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C:\Windows\system32\taskeng.exetaskeng.exe {6F639529-0B2C-4152-AC3F-45BCE4CB1B11} S-1-5-21-3627615824-4061627003-3019543961-1000:SCFGBRBT\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\EsetSecurity\D5f0a5d17c7420fe49da676.exeC:\Users\Admin\AppData\Local\EsetSecurity\D5f0a5d17c7420fe49da676.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 2060 -s 30803⤵
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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
1KB
MD5a266bb7dcc38a562631361bbf61dd11b
SHA13b1efd3a66ea28b16697394703a72ca340a05bd5
SHA256df545bf919a2439c36983b54cdfc903dfa4f37d3996d8d84b4c31eec6f3c163e
SHA5120da8ef4f8f6ed3d16d2bc8eb816b9e6e1345dfe2d91160196c47e6149a1d6aedaafadcefd66acdea7f72dcf0832770192ceac15b0c559c4ccc2c0e5581d5aefc
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Filesize
344B
MD537ef89dd053d1fbbbe543186fae272e7
SHA114f369999be0bded7dd6e33efcda9c20f8249600
SHA25681a31386cace589d0ba4453811f1ee39651765cea86b849b71677e84bcb53e32
SHA5125e8548db99ab474d84cc7a459d45ce0e65e4358960caf2969783a3e913c249cb1010a2a20868319da7f2683e9a261f44c2cbc0f4709c4543ef91862e06a8af15
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Filesize
344B
MD5f6011bb04287b584c2ed1649d078152d
SHA1335c86ad722f52b69786e8a379b2d6e6506b31eb
SHA256e502706f1a1d64c0ac0de9415dd0b036d35cee7ea53b0e0d863a8187e894513e
SHA5125f8f46181acc1ce224803ed292f78ff9b0b05e324a8db62f6594fe8eb3a643437f7f9f8db459b08f59ce77dc44f7b6f45d18215473ec5d01e7589269763398e9
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Filesize
242B
MD579aa8e4053032901e8f871e6a604237d
SHA167ffc2a5d989851fe5c002a82ba994d54a600198
SHA256112b7f4b50afd782d8be5041831612d8faf5477a1e7d21836081ca32122b0910
SHA512f2af8caefe138b3ff9f9a9c6767741fd60fc457a42ad30e0a22263118b5513980d651468d54375c4d40f346c77e8b1fb5f6e3e7e29b5be9f09249b1bf6eb9223
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Filesize
4B
MD55a99158e0c52f9e7d290906c9d08268d
SHA192478578ea3b5ff51120bba9153fa3997f603cdb
SHA256f652f5c87c84f33899f9be3b2f62607ce5b61c68cac1f70bb4cdbb40d79b6904
SHA512a049854deb93aadded095b6bc0ddf52b242f95034964b21483d91e75d80095b174306c25eeeab5b517155ae0f8760ea487836ef30cbb9f997bdc264e802cb655
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Filesize
250KB
MD524a8408510d9b173b9dc078574261d28
SHA12ecfc788687aadbd9cc42ea311210f7cde5fa064
SHA25667474d56996cadf242c087aeac455357bd33e79545538eeade15ae259fb3e869
SHA512de51ce9f9df68a688e7a8092aa70210ba07a9d7738ea731e2e8a7e724b3fc73cd77e83f63d675f6a1def373b437af533e1fdc688ddf1bfb94477277a8e74a5a9
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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
9.9MB
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Filesize
9.9MB
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Filesize
272KB
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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
512KB
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Filesize
9.9MB
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Filesize
272KB
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Filesize
9.9MB
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Filesize
512KB