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
363s -
max time network
534s -
platform
windows7_x64 -
resource
win7-20240319-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 7 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 2844 -s 30044⤵
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C:\Windows\system32\taskeng.exetaskeng.exe {89470DDB-611E-484A-B378-B5E0F843EDE7} S-1-5-21-2610426812-2871295383-373749122-1000:UEITMFAB\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 2164 -s 31443⤵
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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
MD5ceeccea469dce0d2c53be2bf168153b9
SHA13acbc0fea9b757cb2abf216dcbaa204762ca2e73
SHA256a6c3ef3305a59608f9538cd019a20ade2673fd635fb11ff2a975f389beb0599f
SHA512d80d9c565a75be80887dbe9188d1b28e3b3d857cb1586e1cc443ce4f996273508fa7b0cdab4e251e90e030eee1aff629123727659f379a079e42259b454e3bdf
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Filesize
4B
MD52107931de60c5a7c5d526bd1d6a8a34d
SHA1615be3324c09aff50c6983202ac46e957cccd504
SHA256854c9a6ae8327b65e20b7a636a0071eced0dc06bdab7f73466123e6e5eb9b80c
SHA5126dc8ea88bba684e9513e2ffa333134013027978befe188695329bdbef9a82c491ce34417f754aaa54cec126af1dadbb89a2ed06b06fd2d6c2d54dc2dcd8dcf1a
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Filesize
250KB
MD524a8408510d9b173b9dc078574261d28
SHA12ecfc788687aadbd9cc42ea311210f7cde5fa064
SHA25667474d56996cadf242c087aeac455357bd33e79545538eeade15ae259fb3e869
SHA512de51ce9f9df68a688e7a8092aa70210ba07a9d7738ea731e2e8a7e724b3fc73cd77e83f63d675f6a1def373b437af533e1fdc688ddf1bfb94477277a8e74a5a9
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Filesize
67KB
MD5753df6889fd7410a2e9fe333da83a429
SHA13c425f16e8267186061dd48ac1c77c122962456e
SHA256b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78
SHA5129d56f79410ad0cf852c74c3ef9454e7ae86e80bdd6ff67773994b48ccac71142bcf5c90635da6a056e1406e81e64674db9584928e867c55b77b59e2851cf6444
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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
512KB
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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
512KB
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Filesize
9.9MB
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Filesize
512KB