Analysis
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max time kernel
137s -
max time network
145s -
platform
windows10_x64 -
resource
win10-en -
submitted
15-09-2021 07:10
Static task
static1
Behavioral task
behavioral1
Sample
Purchase_Inquiry_pdf.exe
Resource
win7-en
Behavioral task
behavioral2
Sample
Purchase_Inquiry_pdf.exe
Resource
win10-en
General
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Target
Purchase_Inquiry_pdf.exe
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Size
552KB
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MD5
5fc50cecdc7da2761f4ccce4b2c1362f
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SHA1
536420b712568d288112f7f38c4e79792be0c107
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SHA256
107c8bfec5d8a4e23c429692da4204025bb77fe71ff6b56a6804f5f19dc820c1
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SHA512
d0e3660d667eeeb800d305516be5fab496e9ea8aaccb271867c4de41a74298b2031424dbc5aca211aa4f30f9e739923dfa9cd124ea8392f174588d6358aefce0
Malware Config
Extracted
agenttesla
http://bot.statusupdate.one/webpanel-charles/mawa/e22cc3544e8953ec6191.php
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/2540-126-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral2/memory/2540-127-0x000000000043771E-mapping.dmp family_agenttesla -
Drops file in Drivers directory 1 IoCs
Processes:
Purchase_Inquiry_pdf.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts Purchase_Inquiry_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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Suspicious use of SetThreadContext 1 IoCs
Processes:
Purchase_Inquiry_pdf.exedescription pid process target process PID 4044 set thread context of 2540 4044 Purchase_Inquiry_pdf.exe Purchase_Inquiry_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 4 IoCs
Processes:
Purchase_Inquiry_pdf.exePurchase_Inquiry_pdf.exepid process 4044 Purchase_Inquiry_pdf.exe 4044 Purchase_Inquiry_pdf.exe 2540 Purchase_Inquiry_pdf.exe 2540 Purchase_Inquiry_pdf.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Purchase_Inquiry_pdf.exePurchase_Inquiry_pdf.exedescription pid process Token: SeDebugPrivilege 4044 Purchase_Inquiry_pdf.exe Token: SeDebugPrivilege 2540 Purchase_Inquiry_pdf.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Purchase_Inquiry_pdf.exepid process 2540 Purchase_Inquiry_pdf.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
Purchase_Inquiry_pdf.exedescription pid process target process PID 4044 wrote to memory of 3216 4044 Purchase_Inquiry_pdf.exe schtasks.exe PID 4044 wrote to memory of 3216 4044 Purchase_Inquiry_pdf.exe schtasks.exe PID 4044 wrote to memory of 3216 4044 Purchase_Inquiry_pdf.exe schtasks.exe PID 4044 wrote to memory of 2540 4044 Purchase_Inquiry_pdf.exe Purchase_Inquiry_pdf.exe PID 4044 wrote to memory of 2540 4044 Purchase_Inquiry_pdf.exe Purchase_Inquiry_pdf.exe PID 4044 wrote to memory of 2540 4044 Purchase_Inquiry_pdf.exe Purchase_Inquiry_pdf.exe PID 4044 wrote to memory of 2540 4044 Purchase_Inquiry_pdf.exe Purchase_Inquiry_pdf.exe PID 4044 wrote to memory of 2540 4044 Purchase_Inquiry_pdf.exe Purchase_Inquiry_pdf.exe PID 4044 wrote to memory of 2540 4044 Purchase_Inquiry_pdf.exe Purchase_Inquiry_pdf.exe PID 4044 wrote to memory of 2540 4044 Purchase_Inquiry_pdf.exe Purchase_Inquiry_pdf.exe PID 4044 wrote to memory of 2540 4044 Purchase_Inquiry_pdf.exe Purchase_Inquiry_pdf.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Purchase_Inquiry_pdf.exe"C:\Users\Admin\AppData\Local\Temp\Purchase_Inquiry_pdf.exe"1⤵
- 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\TSyRBCYa" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBA4D.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Purchase_Inquiry_pdf.exe"C:\Users\Admin\AppData\Local\Temp\Purchase_Inquiry_pdf.exe"2⤵
- Drops file in Drivers directory
- 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\Microsoft\CLR_v4.0_32\UsageLogs\Purchase_Inquiry_pdf.exe.logMD5
0c2899d7c6746f42d5bbe088c777f94c
SHA1622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1
SHA2565b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458
SHA512ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078
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memory/2540-135-0x0000000005E70000-0x0000000005E71000-memory.dmpFilesize
4KB
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memory/2540-134-0x00000000056C0000-0x00000000056C1000-memory.dmpFilesize
4KB
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memory/2540-133-0x0000000005250000-0x0000000005251000-memory.dmpFilesize
4KB
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memory/2540-127-0x000000000043771E-mapping.dmp
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memory/2540-126-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/3216-125-0x0000000000000000-mapping.dmp
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memory/4044-120-0x0000000004B80000-0x0000000004B81000-memory.dmpFilesize
4KB
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memory/4044-124-0x0000000007C50000-0x0000000007C88000-memory.dmpFilesize
224KB
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memory/4044-123-0x00000000056D0000-0x000000000572C000-memory.dmpFilesize
368KB
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memory/4044-122-0x0000000004B90000-0x0000000004B97000-memory.dmpFilesize
28KB
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memory/4044-121-0x0000000004C60000-0x0000000004C61000-memory.dmpFilesize
4KB
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memory/4044-115-0x0000000000150000-0x0000000000151000-memory.dmpFilesize
4KB
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memory/4044-119-0x0000000002520000-0x00000000025B2000-memory.dmpFilesize
584KB
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memory/4044-118-0x0000000004A20000-0x0000000004A21000-memory.dmpFilesize
4KB
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memory/4044-117-0x00000000050C0000-0x00000000050C1000-memory.dmpFilesize
4KB