Analysis
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max time kernel
172s -
max time network
196s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 00:57
Static task
static1
Behavioral task
behavioral1
Sample
2001016641..exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
2001016641..exe
Resource
win10v2004-20220414-en
General
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Target
2001016641..exe
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Size
470KB
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MD5
084de63048b0bf916e1f67db05c27937
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SHA1
b36fccbc2bb51f77e609d2b06248c8c121db7245
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SHA256
d2cc2b6ba20f79d6fcb9c05d24b99d492ae1f4c6d12fe836e5aa05f32bb68beb
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SHA512
2f851d6e3cfeb1297886927d9cf964a388df9e3969fabd62f9f6849db7cf8467f139c791679f2aa9ee37a5a68ca9cd2f8a7aba6f70f100d7aff0ecb23d8800bd
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.rezuit.pro - Port:
587 - Username:
[email protected] - Password:
grace1234
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
Processes:
resource yara_rule behavioral2/memory/3956-134-0x0000000000400000-0x000000000045A000-memory.dmp family_agenttesla -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2001016641..exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation 2001016641..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:
2001016641..exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2001016641..exe Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2001016641..exe Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2001016641..exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
2001016641..exedescription pid process target process PID 2336 set thread context of 3956 2336 2001016641..exe 2001016641..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:
2001016641..exe2001016641..exepid process 2336 2001016641..exe 2336 2001016641..exe 2336 2001016641..exe 3956 2001016641..exe 3956 2001016641..exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
2001016641..exe2001016641..exedescription pid process Token: SeDebugPrivilege 2336 2001016641..exe Token: SeDebugPrivilege 3956 2001016641..exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
2001016641..exedescription pid process target process PID 2336 wrote to memory of 1908 2336 2001016641..exe schtasks.exe PID 2336 wrote to memory of 1908 2336 2001016641..exe schtasks.exe PID 2336 wrote to memory of 1908 2336 2001016641..exe schtasks.exe PID 2336 wrote to memory of 3956 2336 2001016641..exe 2001016641..exe PID 2336 wrote to memory of 3956 2336 2001016641..exe 2001016641..exe PID 2336 wrote to memory of 3956 2336 2001016641..exe 2001016641..exe PID 2336 wrote to memory of 3956 2336 2001016641..exe 2001016641..exe PID 2336 wrote to memory of 3956 2336 2001016641..exe 2001016641..exe PID 2336 wrote to memory of 3956 2336 2001016641..exe 2001016641..exe PID 2336 wrote to memory of 3956 2336 2001016641..exe 2001016641..exe PID 2336 wrote to memory of 3956 2336 2001016641..exe 2001016641..exe -
outlook_office_path 1 IoCs
Processes:
2001016641..exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2001016641..exe -
outlook_win_path 1 IoCs
Processes:
2001016641..exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2001016641..exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2001016641..exe"C:\Users\Admin\AppData\Local\Temp\2001016641..exe"1⤵
- Checks computer location settings
- 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\AQTZrvQoByJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA8A4.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\2001016641..exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\tmpA8A4.tmpFilesize
1KB
MD5fea278eff88c6da3e9ed5946cd46f4ae
SHA1fbf491344f71a670c183c9ce742791f6979c5416
SHA2566908a3205e4cce289cd97598facff4a040a8f54682c284b7c95dab8368212812
SHA512fc2d175dd224bee37c38863af09e4f372a017427eb5d8cecf1d83f13a0e9e002da70fc7cfce7ab947c4db2e7964910be12f48c17079303b6fbf3341ae5be11b9
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memory/1908-131-0x0000000000000000-mapping.dmp
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memory/2336-130-0x0000000074C10000-0x00000000751C1000-memory.dmpFilesize
5.7MB
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memory/3956-133-0x0000000000000000-mapping.dmp
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memory/3956-134-0x0000000000400000-0x000000000045A000-memory.dmpFilesize
360KB
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memory/3956-135-0x0000000074C10000-0x00000000751C1000-memory.dmpFilesize
5.7MB