Analysis
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max time kernel
92s -
max time network
159s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 11:56
General
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Target
20200603_PO_97890_EXPORTFCLpdf.exe
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Size
454KB
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MD5
73eff0ef28208f340480056565e52406
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SHA1
6c97fd2aeaf672b55306147ed028c4ba044287c6
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SHA256
c34a5fb5cb1ee666b5a59c8fd67368b2b3f826b3b8ed19e597dc8beb91416c52
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SHA512
7277bd32980e6822b846f986c7e3c648443034d840463148d66b4ac8e169ecee64ae1444571da4a440c0f296fe36c9506512bc986393074539d2c45a2c3c1270
Malware Config
Extracted
Protocol: smtp- Host:
mail.sesan.com.vn - Port:
587 - Username:
info@sesan.com.vn - Password:
123456
Extracted
agenttesla
Protocol: smtp- Host:
mail.sesan.com.vn - Port:
587 - Username:
info@sesan.com.vn - Password:
123456
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 3 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 14 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\20200603_PO_97890_EXPORTFCLpdf.exe"C:\Users\Admin\AppData\Local\Temp\20200603_PO_97890_EXPORTFCLpdf.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\RRWlmmsFeghNI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1657.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\20200603_PO_97890_EXPORTFCLpdf.exe"{path}"2⤵
- 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\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
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\20200603_PO_97890_EXPORTFCLpdf.exe.logFilesize
1KB
MD5e08f822522c617a40840c62e4b0fb45e
SHA1ae516dca4da5234be6676d3f234c19ec55725be7
SHA256bd9d5e9f7fe6fcff17d873555d4077d15f7d6cdda1183e7f7d278b735ffe1fd7
SHA512894a7fb7bbc18ac6ba13378f58a7db80ad00d6080be9a66b01cae8e23e41d9d2d4cd53c1e20669356b73590c8a3ebfda4bdda3258f81240db56c4a81b7313fe4
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C:\Users\Admin\AppData\Local\Temp\tmp1657.tmpFilesize
1KB
MD50e92da1affa03a67c742424423cab484
SHA198778252316ac18b6c236a45a8ba9041d8b34921
SHA25617fee867824947316509371bd69290bf71de9f6d62c1fa003b76eee88e75cb9e
SHA512e00afd1b11e89e050a85a75ec6163c4161a191a3b3fb4a65177e055c25d3501416ee69848a090582abce3a1d1cafd65f1cedba39525cc89756840453262e54d3
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memory/1832-136-0x0000000000000000-mapping.dmp
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memory/1844-141-0x0000000000000000-mapping.dmp
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memory/2036-133-0x0000000005BC0000-0x0000000005BCA000-memory.dmpFilesize
40KB
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memory/2036-135-0x0000000009B80000-0x0000000009BE6000-memory.dmpFilesize
408KB
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memory/2036-134-0x00000000099E0000-0x0000000009A7C000-memory.dmpFilesize
624KB
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memory/2036-130-0x0000000000FE0000-0x0000000001058000-memory.dmpFilesize
480KB
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memory/2036-132-0x0000000005A20000-0x0000000005AB2000-memory.dmpFilesize
584KB
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memory/2036-131-0x0000000005FD0000-0x0000000006574000-memory.dmpFilesize
5.6MB
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memory/4528-138-0x0000000000000000-mapping.dmp
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memory/4528-139-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/4528-142-0x0000000006990000-0x00000000069E0000-memory.dmpFilesize
320KB