Analysis
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max time kernel
152s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
20-05-2022 22:38
General
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Target
AF mixer - datasheet.exe
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Size
590KB
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MD5
6f2d4c88af5aa275984eebefbd42ceac
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SHA1
2879c6b0af7f620844eb84b3e76f62e60e51f11b
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SHA256
a4a7810facb6a01422c96f844bf7a537f4b6968190bc1c1de57810e73caa58ff
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SHA512
02df5a1a4b2fdb991b94ec256e685a2038078e6b07c767d37cae5426b01ae0170e9f9505501e612b8f92ffb685e28ea5ace3d04f2121d435e9df5a01365692f2
Malware Config
Extracted
Protocol: smtp- Host:
Smtp.yandex.ru - Port:
587 - Username:
[email protected] - Password:
shawama1000
Extracted
agenttesla
Protocol: smtp- Host:
Smtp.yandex.ru - Port:
587 - Username:
[email protected] - Password:
shawama1000
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 1 IoCs
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Looks for VirtualBox Guest Additions in registry 2 TTPs
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Looks for VMWare Tools registry key 2 TTPs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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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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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
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Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
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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 6 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 11 IoCs
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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\AF mixer - datasheet.exe"C:\Users\Admin\AppData\Local\Temp\AF mixer - datasheet.exe"1⤵
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ybycDnSdh" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5BD.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\AF mixer - datasheet.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\AF mixer - datasheet.exe.logFilesize
599B
MD5a56b1681d95f33a909d6f34c33f706fb
SHA1e996e63f53e9041910f84a4246085c7e76d8ea37
SHA2567d87bc567d369a8c708b33966c428845d44ce433d2a6445ca4ccf6449482b3a7
SHA512f0d7998ccb520c7229f95ed26a714b07e6a87c16d097546751f7a0f61678b0abb3fbfcc0caa8eba66fa19c09ad659f89475f0f071f3b249bd1bee07a7cd665a2
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C:\Users\Admin\AppData\Local\Temp\tmp5BD.tmpFilesize
1KB
MD5b76e58cefeeeaf17441d7bfbe942bfbc
SHA19721f28b8afbd0f28b116d2a78f5ad556ca7d8cb
SHA25674ab6b7aa6bd840c9987b4b9be04e5ed49e9507ab59e2dbb0e90e29c7739a24f
SHA512599d5983ebc3206c39c73a597303ff42e8bda30aa349770019d56607594237b804680066c72158fa79c512efaf57fd91e37b511f06712c53f78ea7b82a9a619c
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memory/2576-130-0x0000000000F80000-0x000000000101A000-memory.dmpFilesize
616KB
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memory/2576-131-0x0000000005E30000-0x00000000063D4000-memory.dmpFilesize
5.6MB
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memory/2576-132-0x0000000005880000-0x0000000005912000-memory.dmpFilesize
584KB
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memory/2576-133-0x0000000006480000-0x000000000651C000-memory.dmpFilesize
624KB
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memory/2576-134-0x0000000006B90000-0x0000000006BF6000-memory.dmpFilesize
408KB
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memory/4628-135-0x0000000000000000-mapping.dmp
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memory/4956-137-0x0000000000000000-mapping.dmp
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memory/4956-138-0x0000000000400000-0x0000000000466000-memory.dmpFilesize
408KB
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memory/4956-140-0x0000000006920000-0x0000000006970000-memory.dmpFilesize
320KB
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memory/4956-141-0x0000000007020000-0x000000000702A000-memory.dmpFilesize
40KB