Analysis
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max time kernel
168s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
21-05-2022 01:37
Static task
static1
Behavioral task
behavioral1
Sample
Karcher FZE statement.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
Karcher FZE statement.exe
Resource
win10v2004-20220414-en
General
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Target
Karcher FZE statement.exe
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Size
394KB
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MD5
b5979c5b2733e419902f4a7955e915b5
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SHA1
99cb3633162c8225a8f7dc292d7b02db13f85c3e
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SHA256
103463e2a6f054957a3f580afcd7fa1020db1e3441c99f51ca36f85da1efad3a
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SHA512
9feed5f2cc2d2aa830a3208354402fcaa412ca98207436f7bfa0a65e3a2e05f775ea92ca8e5c8a1764f7dc48787315ac15f722845e5863ebd51d25756a4c2072
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.yandex.ru - Port:
587 - Username:
[email protected] - Password:
qwerty12345##
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/3520-136-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
RegSvcs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\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-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\BAVLA = "C:\\Users\\Admin\\AppData\\Roaming\\BAVLA\\BAVLA.exe" RegSvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Karcher FZE statement.exedescription pid process target process PID 4872 set thread context of 3520 4872 Karcher FZE statement.exe RegSvcs.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RegSvcs.exepid process 3520 RegSvcs.exe 3520 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegSvcs.exedescription pid process Token: SeDebugPrivilege 3520 RegSvcs.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
Karcher FZE statement.exedescription pid process target process PID 4872 wrote to memory of 3520 4872 Karcher FZE statement.exe RegSvcs.exe PID 4872 wrote to memory of 3520 4872 Karcher FZE statement.exe RegSvcs.exe PID 4872 wrote to memory of 3520 4872 Karcher FZE statement.exe RegSvcs.exe PID 4872 wrote to memory of 3520 4872 Karcher FZE statement.exe RegSvcs.exe PID 4872 wrote to memory of 3520 4872 Karcher FZE statement.exe RegSvcs.exe PID 4872 wrote to memory of 3520 4872 Karcher FZE statement.exe RegSvcs.exe PID 4872 wrote to memory of 3520 4872 Karcher FZE statement.exe RegSvcs.exe PID 4872 wrote to memory of 3520 4872 Karcher FZE statement.exe RegSvcs.exe -
outlook_office_path 1 IoCs
Processes:
RegSvcs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\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-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Karcher FZE statement.exe"C:\Users\Admin\AppData\Local\Temp\Karcher FZE statement.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4872 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:3520
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/3520-135-0x0000000000000000-mapping.dmp
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memory/3520-136-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/3520-137-0x0000000006690000-0x00000000066F6000-memory.dmpFilesize
408KB
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memory/3520-138-0x0000000006CA0000-0x0000000006CF0000-memory.dmpFilesize
320KB
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memory/4872-130-0x0000000000AB0000-0x0000000000B18000-memory.dmpFilesize
416KB
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memory/4872-131-0x0000000005AE0000-0x0000000006084000-memory.dmpFilesize
5.6MB
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memory/4872-132-0x0000000005530000-0x00000000055C2000-memory.dmpFilesize
584KB
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memory/4872-134-0x00000000057A0000-0x000000000583C000-memory.dmpFilesize
624KB
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memory/4872-133-0x00000000054B0000-0x00000000054BA000-memory.dmpFilesize
40KB