Analysis
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max time kernel
129s -
max time network
22s -
platform
windows7_x64 -
resource
win7v200430 -
submitted
09-07-2020 07:32
Static task
static1
Behavioral task
behavioral1
Sample
RFQ_JULY.PDF.exe
Resource
win7v200430
Behavioral task
behavioral2
Sample
RFQ_JULY.PDF.exe
Resource
win10
General
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Target
RFQ_JULY.PDF.exe
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Size
544KB
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MD5
4b5ba07140a8f5e93a39b915289a1e74
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SHA1
c49028080b8b4fb4546af71438379d4f2ef09368
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SHA256
68f9789527e83e614dc50e0279316745c15b43c7f72f8e7c5d4b99d8a656ff12
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SHA512
72878047cd8eaf504fc81705855176868b59910f925a9a0d0bb8fdf4249a4baadd55d2d48585e4edbc84d6dbc50f099e61adce2be2abc930e33384c4c0e9d8ad
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.pka.co.in - Port:
587 - Username:
[email protected] - Password:
a$yQ&h1Yd6&
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 4 IoCs
Processes:
resource yara_rule behavioral1/memory/836-4-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/836-5-0x000000000044771E-mapping.dmp family_agenttesla behavioral1/memory/836-6-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/836-7-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla -
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.
Processes:
RFQ_JULY.PDF.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion RFQ_JULY.PDF.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion RFQ_JULY.PDF.exe -
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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Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
RFQ_JULY.PDF.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum RFQ_JULY.PDF.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 RFQ_JULY.PDF.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
RFQ_JULY.PDF.exedescription pid process target process PID 376 set thread context of 836 376 RFQ_JULY.PDF.exe RFQ_JULY.PDF.exe -
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
Processes:
RFQ_JULY.PDF.exeRFQ_JULY.PDF.exepid process 376 RFQ_JULY.PDF.exe 836 RFQ_JULY.PDF.exe 836 RFQ_JULY.PDF.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
RFQ_JULY.PDF.exeRFQ_JULY.PDF.exedescription pid process Token: SeDebugPrivilege 376 RFQ_JULY.PDF.exe Token: SeDebugPrivilege 836 RFQ_JULY.PDF.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
RFQ_JULY.PDF.exepid process 836 RFQ_JULY.PDF.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
RFQ_JULY.PDF.exedescription pid process target process PID 376 wrote to memory of 520 376 RFQ_JULY.PDF.exe schtasks.exe PID 376 wrote to memory of 520 376 RFQ_JULY.PDF.exe schtasks.exe PID 376 wrote to memory of 520 376 RFQ_JULY.PDF.exe schtasks.exe PID 376 wrote to memory of 520 376 RFQ_JULY.PDF.exe schtasks.exe PID 376 wrote to memory of 836 376 RFQ_JULY.PDF.exe RFQ_JULY.PDF.exe PID 376 wrote to memory of 836 376 RFQ_JULY.PDF.exe RFQ_JULY.PDF.exe PID 376 wrote to memory of 836 376 RFQ_JULY.PDF.exe RFQ_JULY.PDF.exe PID 376 wrote to memory of 836 376 RFQ_JULY.PDF.exe RFQ_JULY.PDF.exe PID 376 wrote to memory of 836 376 RFQ_JULY.PDF.exe RFQ_JULY.PDF.exe PID 376 wrote to memory of 836 376 RFQ_JULY.PDF.exe RFQ_JULY.PDF.exe PID 376 wrote to memory of 836 376 RFQ_JULY.PDF.exe RFQ_JULY.PDF.exe PID 376 wrote to memory of 836 376 RFQ_JULY.PDF.exe RFQ_JULY.PDF.exe PID 376 wrote to memory of 836 376 RFQ_JULY.PDF.exe RFQ_JULY.PDF.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\RFQ_JULY.PDF.exe"C:\Users\Admin\AppData\Local\Temp\RFQ_JULY.PDF.exe"1⤵
- Checks BIOS information in registry
- 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\cBmrmyGDrZcin" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA5C0.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\RFQ_JULY.PDF.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\tmpA5C0.tmpMD5
e17da94d8ee074f7a5e547d53f199339
SHA1753145c44c477a426c83bd3a3b7c7bc0e4d8d453
SHA256c9e70d3b07aa638b1f1518bee7955f7f8b5c934be408b79d56e371e9d3c19dfe
SHA512070ff8e140ed84212d7567292036872d2d170cb6da52878a4359a655124b6b5cc45d7fd9d93eaa6dfb3ddd6782f11c08ceef0e4848f3e5c034fb50ae8b44293a
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memory/376-1-0x0000000000000000-0x0000000000000000-disk.dmp
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memory/520-2-0x0000000000000000-mapping.dmp
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memory/836-4-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/836-5-0x000000000044771E-mapping.dmp
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memory/836-6-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/836-7-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB