Analysis
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max time kernel
134s -
max time network
49s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 00:28
Static task
static1
Behavioral task
behavioral1
Sample
oCuh3V3aoPBhwtd.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
oCuh3V3aoPBhwtd.exe
Resource
win10v2004-20220414-en
General
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Target
oCuh3V3aoPBhwtd.exe
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Size
562KB
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MD5
55f13cb30ae279d01c841d5d1df254a5
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SHA1
d5c921d2852869fe6a56b044280edf0b18c2fc3b
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SHA256
141f6b77ca73edeb173fee8e7d07dcf4655a6160c47e471ba6939a3807ec258c
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SHA512
614738b95e4781cc792311fc411bf5b011f4690666f312f2b7472e026ef98fc64a010f61992bfcc32620dbbf55f3fdd73038a665914ecde433b432111498cb36
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.aiotecs.com - Port:
587 - Username:
[email protected] - Password:
IWDma!*4
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/1732-64-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1732-65-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1732-66-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1732-67-0x000000000044681E-mapping.dmp family_agenttesla behavioral1/memory/1732-69-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1732-71-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla -
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:
oCuh3V3aoPBhwtd.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 oCuh3V3aoPBhwtd.exe Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 oCuh3V3aoPBhwtd.exe Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 oCuh3V3aoPBhwtd.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
oCuh3V3aoPBhwtd.exedescription pid process target process PID 1648 set thread context of 1732 1648 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.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:
oCuh3V3aoPBhwtd.exeoCuh3V3aoPBhwtd.exepid process 1648 oCuh3V3aoPBhwtd.exe 1648 oCuh3V3aoPBhwtd.exe 1648 oCuh3V3aoPBhwtd.exe 1732 oCuh3V3aoPBhwtd.exe 1732 oCuh3V3aoPBhwtd.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
oCuh3V3aoPBhwtd.exeoCuh3V3aoPBhwtd.exedescription pid process Token: SeDebugPrivilege 1648 oCuh3V3aoPBhwtd.exe Token: SeDebugPrivilege 1732 oCuh3V3aoPBhwtd.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
oCuh3V3aoPBhwtd.exedescription pid process target process PID 1648 wrote to memory of 824 1648 oCuh3V3aoPBhwtd.exe schtasks.exe PID 1648 wrote to memory of 824 1648 oCuh3V3aoPBhwtd.exe schtasks.exe PID 1648 wrote to memory of 824 1648 oCuh3V3aoPBhwtd.exe schtasks.exe PID 1648 wrote to memory of 824 1648 oCuh3V3aoPBhwtd.exe schtasks.exe PID 1648 wrote to memory of 1732 1648 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe PID 1648 wrote to memory of 1732 1648 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe PID 1648 wrote to memory of 1732 1648 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe PID 1648 wrote to memory of 1732 1648 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe PID 1648 wrote to memory of 1732 1648 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe PID 1648 wrote to memory of 1732 1648 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe PID 1648 wrote to memory of 1732 1648 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe PID 1648 wrote to memory of 1732 1648 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe PID 1648 wrote to memory of 1732 1648 oCuh3V3aoPBhwtd.exe oCuh3V3aoPBhwtd.exe -
outlook_office_path 1 IoCs
Processes:
oCuh3V3aoPBhwtd.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 oCuh3V3aoPBhwtd.exe -
outlook_win_path 1 IoCs
Processes:
oCuh3V3aoPBhwtd.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 oCuh3V3aoPBhwtd.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\oCuh3V3aoPBhwtd.exe"C:\Users\Admin\AppData\Local\Temp\oCuh3V3aoPBhwtd.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\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD154.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\oCuh3V3aoPBhwtd.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\tmpD154.tmpFilesize
1KB
MD5d2aa72e1e0a9b7dcb81af5082540153a
SHA169f84c985fea812daa2fcfd1941a7d60facb4a7e
SHA256c7a368be198491672c06e17b5626878b39a06de3bb28c0f028cc3aff46e43d3d
SHA512541bbb3c838c14bfc2c91d1394a99a72f76ad8c3534da1215336ffdc3d63922d456af573ced60d5dff7f9e70fc1f7c8f3cd8ad997374356ecb784695ea312692
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memory/824-59-0x0000000000000000-mapping.dmp
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memory/1648-57-0x0000000000C90000-0x0000000000D04000-memory.dmpFilesize
464KB
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memory/1648-54-0x0000000000ED0000-0x0000000000F62000-memory.dmpFilesize
584KB
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memory/1648-58-0x0000000004810000-0x0000000004866000-memory.dmpFilesize
344KB
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memory/1648-56-0x0000000000440000-0x0000000000448000-memory.dmpFilesize
32KB
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memory/1648-55-0x0000000075BA1000-0x0000000075BA3000-memory.dmpFilesize
8KB
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memory/1732-61-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1732-62-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1732-64-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1732-65-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1732-66-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1732-67-0x000000000044681E-mapping.dmp
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memory/1732-69-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1732-71-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB