Analysis
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max time kernel
129s -
max time network
49s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 00:19
Static task
static1
Behavioral task
behavioral1
Sample
cataloco ECOR 2 Dl2.pdf.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
cataloco ECOR 2 Dl2.pdf.exe
Resource
win10v2004-20220414-en
General
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Target
cataloco ECOR 2 Dl2.pdf.exe
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Size
439KB
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MD5
4ef34b916c5b6593e719a6b9a17481d1
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SHA1
25aeecfaeca807ec26d0ba461cba1c29f8137da4
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SHA256
1a5841a21e616296c4aafe372c36998c9e46c1f79513a379e59ee7aedc7a2535
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SHA512
a2c3c775b2153f9697834123eb7555c8978c613353291f2eb73b69a5c3675dd37599f9d969d9dec4cb05ef8b30d2cb40cd6e78a8e8b926f98dddd83aa4a44d71
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.cosur.pe - Port:
587 - Username:
[email protected] - Password:
C0m3rc14l%
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 6 IoCs
Processes:
resource yara_rule behavioral1/memory/872-65-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/872-64-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/872-66-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/872-67-0x000000000044702E-mapping.dmp family_agenttesla behavioral1/memory/872-69-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/872-71-0x0000000000400000-0x000000000044C000-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:
cataloco ECOR 2 Dl2.pdf.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion cataloco ECOR 2 Dl2.pdf.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion cataloco ECOR 2 Dl2.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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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
cataloco ECOR 2 Dl2.pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 cataloco ECOR 2 Dl2.pdf.exe Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 cataloco ECOR 2 Dl2.pdf.exe Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 cataloco ECOR 2 Dl2.pdf.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
cataloco ECOR 2 Dl2.pdf.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum cataloco ECOR 2 Dl2.pdf.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 cataloco ECOR 2 Dl2.pdf.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
cataloco ECOR 2 Dl2.pdf.exedescription pid process target process PID 1684 set thread context of 872 1684 cataloco ECOR 2 Dl2.pdf.exe cataloco ECOR 2 Dl2.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 5 IoCs
Processes:
cataloco ECOR 2 Dl2.pdf.execataloco ECOR 2 Dl2.pdf.exepid process 1684 cataloco ECOR 2 Dl2.pdf.exe 1684 cataloco ECOR 2 Dl2.pdf.exe 1684 cataloco ECOR 2 Dl2.pdf.exe 872 cataloco ECOR 2 Dl2.pdf.exe 872 cataloco ECOR 2 Dl2.pdf.exe -
Suspicious behavior: RenamesItself 1 IoCs
Processes:
cataloco ECOR 2 Dl2.pdf.exepid process 872 cataloco ECOR 2 Dl2.pdf.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
cataloco ECOR 2 Dl2.pdf.execataloco ECOR 2 Dl2.pdf.exedescription pid process Token: SeDebugPrivilege 1684 cataloco ECOR 2 Dl2.pdf.exe Token: SeDebugPrivilege 872 cataloco ECOR 2 Dl2.pdf.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
cataloco ECOR 2 Dl2.pdf.exedescription pid process target process PID 1684 wrote to memory of 1784 1684 cataloco ECOR 2 Dl2.pdf.exe schtasks.exe PID 1684 wrote to memory of 1784 1684 cataloco ECOR 2 Dl2.pdf.exe schtasks.exe PID 1684 wrote to memory of 1784 1684 cataloco ECOR 2 Dl2.pdf.exe schtasks.exe PID 1684 wrote to memory of 1784 1684 cataloco ECOR 2 Dl2.pdf.exe schtasks.exe PID 1684 wrote to memory of 872 1684 cataloco ECOR 2 Dl2.pdf.exe cataloco ECOR 2 Dl2.pdf.exe PID 1684 wrote to memory of 872 1684 cataloco ECOR 2 Dl2.pdf.exe cataloco ECOR 2 Dl2.pdf.exe PID 1684 wrote to memory of 872 1684 cataloco ECOR 2 Dl2.pdf.exe cataloco ECOR 2 Dl2.pdf.exe PID 1684 wrote to memory of 872 1684 cataloco ECOR 2 Dl2.pdf.exe cataloco ECOR 2 Dl2.pdf.exe PID 1684 wrote to memory of 872 1684 cataloco ECOR 2 Dl2.pdf.exe cataloco ECOR 2 Dl2.pdf.exe PID 1684 wrote to memory of 872 1684 cataloco ECOR 2 Dl2.pdf.exe cataloco ECOR 2 Dl2.pdf.exe PID 1684 wrote to memory of 872 1684 cataloco ECOR 2 Dl2.pdf.exe cataloco ECOR 2 Dl2.pdf.exe PID 1684 wrote to memory of 872 1684 cataloco ECOR 2 Dl2.pdf.exe cataloco ECOR 2 Dl2.pdf.exe PID 1684 wrote to memory of 872 1684 cataloco ECOR 2 Dl2.pdf.exe cataloco ECOR 2 Dl2.pdf.exe -
outlook_office_path 1 IoCs
Processes:
cataloco ECOR 2 Dl2.pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 cataloco ECOR 2 Dl2.pdf.exe -
outlook_win_path 1 IoCs
Processes:
cataloco ECOR 2 Dl2.pdf.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 cataloco ECOR 2 Dl2.pdf.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\cataloco ECOR 2 Dl2.pdf.exe"C:\Users\Admin\AppData\Local\Temp\cataloco ECOR 2 Dl2.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\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB56B.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\cataloco ECOR 2 Dl2.pdf.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- 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\Temp\tmpB56B.tmpFilesize
1KB
MD5d2aa72e1e0a9b7dcb81af5082540153a
SHA169f84c985fea812daa2fcfd1941a7d60facb4a7e
SHA256c7a368be198491672c06e17b5626878b39a06de3bb28c0f028cc3aff46e43d3d
SHA512541bbb3c838c14bfc2c91d1394a99a72f76ad8c3534da1215336ffdc3d63922d456af573ced60d5dff7f9e70fc1f7c8f3cd8ad997374356ecb784695ea312692
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memory/872-65-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/872-66-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/872-71-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/872-69-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/872-67-0x000000000044702E-mapping.dmp
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memory/872-64-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/872-61-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/872-62-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1684-54-0x0000000000850000-0x00000000008C4000-memory.dmpFilesize
464KB
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memory/1684-55-0x00000000752D1000-0x00000000752D3000-memory.dmpFilesize
8KB
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memory/1684-56-0x0000000000230000-0x0000000000238000-memory.dmpFilesize
32KB
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memory/1684-58-0x0000000004410000-0x0000000004466000-memory.dmpFilesize
344KB
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memory/1684-57-0x0000000005F80000-0x0000000005FEA000-memory.dmpFilesize
424KB
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memory/1784-59-0x0000000000000000-mapping.dmp