Analysis
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max time kernel
90s -
max time network
127s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 12:25
General
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Target
Facturas Pagadas al Vencimiento.exe
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Size
440KB
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MD5
194b1225cd1efbc86b7f980fd051f4ab
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SHA1
e0d239503372670ee76df673bb3755e503287ddf
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SHA256
d8972963e61f138278d2f2c45982444f682428c6de5d3cdcf5d0f46797754949
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SHA512
1c3dbb023a4a9adf3a8d88677948d98d538cbc1eb14e7a26157102a83b936e18e437972f3410f0be0abe2eb521691da2c103e59660becf1f94341418379260ef
Malware Config
Extracted
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
off1ce.box@yandex.com - Password:
kroskofile
Extracted
agenttesla
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
off1ce.box@yandex.com - Password:
kroskofile
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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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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Suspicious use of SetThreadContext 1 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of SetWindowsHookEx 1 IoCs
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Suspicious use of WriteProcessMemory 8 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\Facturas Pagadas al Vencimiento.exe"C:\Users\Admin\AppData\Local\Temp\Facturas Pagadas al Vencimiento.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Facturas Pagadas al Vencimiento.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- 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\Facturas Pagadas al Vencimiento.exe.logFilesize
1KB
MD58ec831f3e3a3f77e4a7b9cd32b48384c
SHA1d83f09fd87c5bd86e045873c231c14836e76a05c
SHA2567667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA51226bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
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memory/1340-130-0x0000000000AB0000-0x0000000000B24000-memory.dmpFilesize
464KB
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memory/1340-131-0x0000000005B40000-0x00000000060E4000-memory.dmpFilesize
5.6MB
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memory/1340-132-0x00000000054C0000-0x0000000005552000-memory.dmpFilesize
584KB
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memory/1340-133-0x0000000005570000-0x000000000557A000-memory.dmpFilesize
40KB
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memory/1340-134-0x0000000009090000-0x000000000912C000-memory.dmpFilesize
624KB
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memory/4392-135-0x0000000000000000-mapping.dmp
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memory/4392-136-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/4392-138-0x0000000005DE0000-0x0000000005E46000-memory.dmpFilesize
408KB
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memory/4392-139-0x0000000006430000-0x0000000006480000-memory.dmpFilesize
320KB