Analysis
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max time kernel
135s -
max time network
47s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 11:59
Static task
static1
Behavioral task
behavioral1
Sample
shipping documents.PDF.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
shipping documents.PDF.exe
Resource
win10v2004-20220414-en
General
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Target
shipping documents.PDF.exe
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Size
433KB
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MD5
9bc66f36baedd02eb6b55e391d90b324
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SHA1
aaa6786ed70237361fb28250da350181d0fd28fe
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SHA256
4b1a13f1b1a0bff19df63d1ebf93a2c1c390896b77db3b724a2e5c03f6007d81
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SHA512
027dbf3d56939ad0d7f4bae865863e9da23d3be4278b2e7a257b8c08b135390322b298c4bece43cda407c6eeec07c4f41a5d5b72bcee4018c65b6530aa3f462e
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.microtechlab.in - Port:
587 - Username:
[email protected] - Password:
pune@123
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/1960-63-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla behavioral1/memory/1960-64-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla behavioral1/memory/1960-65-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla behavioral1/memory/1960-66-0x000000000044CF5E-mapping.dmp family_agenttesla behavioral1/memory/1960-68-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla behavioral1/memory/1960-70-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla -
ReZer0 packer 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
Processes:
resource yara_rule behavioral1/memory/1460-56-0x0000000000A10000-0x0000000000A68000-memory.dmp rezer0 -
Disables Task Manager via registry modification
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Drops file in Drivers directory 1 IoCs
Processes:
RegSvcs.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts RegSvcs.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
RegSvcs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
RegSvcs.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\CpSnJ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CpSnJ\\CpSnJ.exe" RegSvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
shipping documents.PDF.exedescription pid process target process PID 1460 set thread context of 1960 1460 shipping documents.PDF.exe RegSvcs.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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Modifies registry key 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
shipping documents.PDF.exeRegSvcs.exepid process 1460 shipping documents.PDF.exe 1460 shipping documents.PDF.exe 1460 shipping documents.PDF.exe 1960 RegSvcs.exe 1960 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
shipping documents.PDF.exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 1460 shipping documents.PDF.exe Token: SeDebugPrivilege 1960 RegSvcs.exe -
Suspicious use of WriteProcessMemory 24 IoCs
Processes:
shipping documents.PDF.exeRegSvcs.exedescription pid process target process PID 1460 wrote to memory of 1996 1460 shipping documents.PDF.exe schtasks.exe PID 1460 wrote to memory of 1996 1460 shipping documents.PDF.exe schtasks.exe PID 1460 wrote to memory of 1996 1460 shipping documents.PDF.exe schtasks.exe PID 1460 wrote to memory of 1996 1460 shipping documents.PDF.exe schtasks.exe PID 1460 wrote to memory of 1960 1460 shipping documents.PDF.exe RegSvcs.exe PID 1460 wrote to memory of 1960 1460 shipping documents.PDF.exe RegSvcs.exe PID 1460 wrote to memory of 1960 1460 shipping documents.PDF.exe RegSvcs.exe PID 1460 wrote to memory of 1960 1460 shipping documents.PDF.exe RegSvcs.exe PID 1460 wrote to memory of 1960 1460 shipping documents.PDF.exe RegSvcs.exe PID 1460 wrote to memory of 1960 1460 shipping documents.PDF.exe RegSvcs.exe PID 1460 wrote to memory of 1960 1460 shipping documents.PDF.exe RegSvcs.exe PID 1460 wrote to memory of 1960 1460 shipping documents.PDF.exe RegSvcs.exe PID 1460 wrote to memory of 1960 1460 shipping documents.PDF.exe RegSvcs.exe PID 1460 wrote to memory of 1960 1460 shipping documents.PDF.exe RegSvcs.exe PID 1460 wrote to memory of 1960 1460 shipping documents.PDF.exe RegSvcs.exe PID 1460 wrote to memory of 1960 1460 shipping documents.PDF.exe RegSvcs.exe PID 1960 wrote to memory of 1812 1960 RegSvcs.exe REG.exe PID 1960 wrote to memory of 1812 1960 RegSvcs.exe REG.exe PID 1960 wrote to memory of 1812 1960 RegSvcs.exe REG.exe PID 1960 wrote to memory of 1812 1960 RegSvcs.exe REG.exe PID 1960 wrote to memory of 1752 1960 RegSvcs.exe netsh.exe PID 1960 wrote to memory of 1752 1960 RegSvcs.exe netsh.exe PID 1960 wrote to memory of 1752 1960 RegSvcs.exe netsh.exe PID 1960 wrote to memory of 1752 1960 RegSvcs.exe netsh.exe -
outlook_office_path 1 IoCs
Processes:
RegSvcs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe -
outlook_win_path 1 IoCs
Processes:
RegSvcs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\shipping documents.PDF.exe"C:\Users\Admin\AppData\Local\Temp\shipping documents.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\myhqZugPIlg" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEE08.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
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C:\Windows\SysWOW64\REG.exeREG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f3⤵
- Modifies registry key
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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\Temp\tmpEE08.tmpFilesize
1KB
MD5b946dbd1a3eff669ac965e7754ef1160
SHA15409a28fe0b554d94d322b9dc2d28edbda96dd45
SHA256c39062aa15c78d8da3fb60bb18bdaeb5384414c58e17731c3a6a1ec01535f1b1
SHA512f37356fa70978b5985020e11bb032b792a42b7d7af56662656362e37ab8040f2bc7b660de2d8109730b777aeb007554bce49670c58e432052f1a5c0c2d331c86
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memory/1460-54-0x0000000001220000-0x0000000001292000-memory.dmpFilesize
456KB
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memory/1460-55-0x0000000000370000-0x0000000000378000-memory.dmpFilesize
32KB
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memory/1460-56-0x0000000000A10000-0x0000000000A68000-memory.dmpFilesize
352KB
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memory/1460-57-0x00000000763E1000-0x00000000763E3000-memory.dmpFilesize
8KB
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memory/1752-73-0x0000000000000000-mapping.dmp
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memory/1812-72-0x0000000000000000-mapping.dmp
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memory/1960-68-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1960-63-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1960-64-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1960-65-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1960-66-0x000000000044CF5E-mapping.dmp
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memory/1960-61-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1960-70-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1960-60-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1996-58-0x0000000000000000-mapping.dmp