Analysis
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max time kernel
118s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
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submitted
12/02/2024, 12:03
General
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Target
Ynstr.exe
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Size
718KB
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MD5
43a00ef10637139c060f1139df3b9cc1
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SHA1
f717df8434925d25e03512c91385bc528576339e
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SHA256
f2a3d321b3fbb2d3be23e5416a82b92d9aa73c3573ef0630d0570483ced8a731
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SHA512
19c9ea8f334c2ff21ae39339e94603f7245feb67784d22ab551c809d8d7dd364941b18c8e649476b9a260d89f8005ba9ebb5b9baf401327ef6c6a44c33602bbc
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SSDEEP
12288:RCcj8EhT1GrAjbadQSIVCXfUWQBZoeAfeDlV25x3nGxYcBa8k:Icj8EzCdQSIkXsWQE4lV259Gx
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.emulines.biz - Port:
587 - Username:
[email protected] - Password:
7FZLGL7DTG0F - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Detect ZGRat V1 34 IoCs
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ZGRat
ZGRat is remote access trojan written in C#.
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Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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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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Adds Run key to start application 2 TTPs 2 IoCs
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Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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Suspicious use of SetThreadContext 1 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 9 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Ynstr.exe"C:\Users\Admin\AppData\Local\Temp\Ynstr.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Ynstr.exeC:\Users\Admin\AppData\Local\Temp\Ynstr.exe2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
264KB
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Filesize
256KB
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Filesize
6.9MB
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Filesize
256KB
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Filesize
6.9MB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
744KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
256KB
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Filesize
4KB
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Filesize
264KB
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Filesize
304KB
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Filesize
6.9MB
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Filesize
712KB
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Filesize
712KB
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Filesize
712KB
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Filesize
736KB
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Filesize
6.9MB