Analysis
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max time kernel
121s -
max time network
122s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
09-11-2020 19:37
General
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Target
New Request.exe
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Size
553KB
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MD5
abf16f4f5482738b53393f835dd6b9f9
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SHA1
989529e1969a6b971a632a176862d5291fc5e2a1
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SHA256
0b6118c17d89a24512971b9190cf4e76b54e0f02cb06d23d899a17feb9fc64f3
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SHA512
e8dca4d90155c920b11cb2ebf44f65b93374b532a1c5f757937676939f68f254234318aa057b67ae32fdeae31f334f99218c2cb51fed27d3d1bf490317e42e04
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
dmkozlovd@yandex.ru - Password:
Starboy@22
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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CoreEntity .NET Packer 1 IoCs
A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.
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AgentTesla Payload 4 IoCs
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rezer0 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
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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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Suspicious use of SetThreadContext 1 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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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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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of SetWindowsHookEx 3 IoCs
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Suspicious use of WriteProcessMemory 13 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\New Request.exe"C:\Users\Admin\AppData\Local\Temp\New Request.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\suCEFwS" /XML "C:\Users\Admin\AppData\Local\Temp\tmp71D6.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\New Request.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp71D6.tmpMD5
09ba1b23c9f4041f827016e25343cef2
SHA1d3f70c58fc7e3c193becb2a9a185a57dda172af2
SHA2569da1d0d89c05eee67becaac80ec8b7cf11f8dd6f53e0e868176307911b8049f0
SHA512f3a7d7be440aa13baafce58795e0ad32f496f9eafca35705089bfe63ec8c4302d10a30bf931f43a9ad1c62c544c34e611344741ca3ef234528cf4e742cc315c6
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memory/436-7-0x0000000000000000-mapping.dmp
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memory/644-10-0x000000000044A6CE-mapping.dmp
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memory/644-9-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/644-11-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/644-12-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/644-13-0x0000000074900000-0x0000000074FEE000-memory.dmpFilesize
6.9MB
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memory/1040-5-0x0000000000270000-0x0000000000273000-memory.dmpFilesize
12KB
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memory/1040-6-0x0000000007F00000-0x0000000007F51000-memory.dmpFilesize
324KB
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memory/1040-3-0x0000000000960000-0x00000000009BB000-memory.dmpFilesize
364KB
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memory/1040-1-0x00000000000E0000-0x00000000000E1000-memory.dmpFilesize
4KB
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memory/1040-0-0x0000000074900000-0x0000000074FEE000-memory.dmpFilesize
6.9MB
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memory/1592-4-0x000007FEF7880000-0x000007FEF7AFA000-memory.dmpFilesize
2.5MB