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
1563s -
max time network
1567s -
platform
windows7_x64 -
resource
win7-20240221-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 6 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 2460 -s 30604⤵
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C:\Windows\system32\taskeng.exetaskeng.exe {265FA357-1777-4A60-80C4-BBE5E54F55F5} S-1-5-21-1658372521-4246568289-2509113762-1000:PIRBKNPS\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 2332 -s 31523⤵
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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
MD5e96b1634b170ae70f3d9ae4ac917ae8d
SHA1995c8b8e6f1cd5d1ca0ad16049c77dd28580ca73
SHA256d7f437f7a4739348cad24f55811b247b240f3452d90129ecf1f5662b274bdce5
SHA512a2b1fbeff604e38efe5abb8d2749a6517cb1eae37143e7f4e35f5328ac8810ac5f7441b2b9062e6049c168e6793096b8bd143146b967b3aab551d45dfbbbeec4
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Filesize
344B
MD588e920de14f0215fa1e83f494c729326
SHA1444bf2a35013472523df7ee10d70f436782496b8
SHA256500484c7faf6aecfc73732a446ec45595465ef2bdda65416a6f66d8726228885
SHA512aaf935e4cd0bbd4761063dce3ef520eb05fab6b82549a7cb735f4160f995e9bd93b05ff8a33f60a2a023378371dd6a534c8b4fd161f3fe14d2cb7f93ade0717c
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Filesize
4B
MD5f4e3ce3e7b581ff32e40968298ba013d
SHA169e771474ba5705eb63f0e6a4fa885755279549e
SHA2565b328cf43d53a589fe546b2d4e2d18e962693c58a78fd1e0aa6eb05501dbd81f
SHA51230260997a27ddcbd88b5ea5f72fda94e10a4fd883c8e11b274e940a3065e2fa997b7a4c28be3a41b665841b987459b61fc2370efb5243dfa76ac9b729916267a
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Filesize
250KB
MD524a8408510d9b173b9dc078574261d28
SHA12ecfc788687aadbd9cc42ea311210f7cde5fa064
SHA25667474d56996cadf242c087aeac455357bd33e79545538eeade15ae259fb3e869
SHA512de51ce9f9df68a688e7a8092aa70210ba07a9d7738ea731e2e8a7e724b3fc73cd77e83f63d675f6a1def373b437af533e1fdc688ddf1bfb94477277a8e74a5a9
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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
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
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