Analysis
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max time kernel
90s -
max time network
143s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
17-06-2024 16:48
Static task
static1
Behavioral task
behavioral1
Sample
z27FACTURA09654700.BAT.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
z27FACTURA09654700.BAT.exe
Resource
win10v2004-20240611-en
General
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Target
z27FACTURA09654700.BAT.exe
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Size
1.0MB
-
MD5
aed00ff3e85dbf1bbf99939966939b3a
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SHA1
d02a5bc420207a7958e34a4740968439969f5b19
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SHA256
b772162c5b510c5427be045abfdc43c29756217e2ed924ce4c4388bd457a4987
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SHA512
08ad4f11a67a9e8228d83e96fbcccd98910d53ff2929e2d70d336b8e808d4d7e37f90d157e2747b744eb19b451aba2a0985022207a68ff50dcbd8cdef5e1f50a
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SSDEEP
24576:HAHnh+eWsN3skA4RV1Hom2KXMmHauOVaz7jxokZf4vFEGR5:6h+ZkldoPK8YauOIzHxokZfqFEo
Malware Config
Extracted
agenttesla
Protocol: ftp- Host:
ftp://ftp.antoniomayol.com:21 - Port:
21 - Username:
[email protected] - Password:
cMhKDQUk1{;%
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Drops startup file 1 IoCs
Processes:
corynteria.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\corynteria.vbs corynteria.exe -
Executes dropped EXE 1 IoCs
Processes:
corynteria.exepid process 4344 corynteria.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 19 ip-api.com -
AutoIT Executable 1 IoCs
AutoIT scripts compiled to PE executables.
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\obtenebrate\corynteria.exe autoit_exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
corynteria.exedescription pid process target process PID 4344 set thread context of 1664 4344 corynteria.exe RegSvcs.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
RegSvcs.exepid process 1664 RegSvcs.exe 1664 RegSvcs.exe -
Suspicious behavior: MapViewOfSection 2 IoCs
Processes:
corynteria.exepid process 4344 corynteria.exe 4344 corynteria.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegSvcs.exedescription pid process Token: SeDebugPrivilege 1664 RegSvcs.exe -
Suspicious use of FindShellTrayWindow 4 IoCs
Processes:
z27FACTURA09654700.BAT.execorynteria.exepid process 3620 z27FACTURA09654700.BAT.exe 3620 z27FACTURA09654700.BAT.exe 4344 corynteria.exe 4344 corynteria.exe -
Suspicious use of SendNotifyMessage 4 IoCs
Processes:
z27FACTURA09654700.BAT.execorynteria.exepid process 3620 z27FACTURA09654700.BAT.exe 3620 z27FACTURA09654700.BAT.exe 4344 corynteria.exe 4344 corynteria.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
z27FACTURA09654700.BAT.execorynteria.exedescription pid process target process PID 3620 wrote to memory of 4344 3620 z27FACTURA09654700.BAT.exe corynteria.exe PID 3620 wrote to memory of 4344 3620 z27FACTURA09654700.BAT.exe corynteria.exe PID 3620 wrote to memory of 4344 3620 z27FACTURA09654700.BAT.exe corynteria.exe PID 4344 wrote to memory of 1664 4344 corynteria.exe RegSvcs.exe PID 4344 wrote to memory of 1664 4344 corynteria.exe RegSvcs.exe PID 4344 wrote to memory of 1664 4344 corynteria.exe RegSvcs.exe PID 4344 wrote to memory of 1664 4344 corynteria.exe RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\z27FACTURA09654700.BAT.exe"C:\Users\Admin\AppData\Local\Temp\z27FACTURA09654700.BAT.exe"1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3620 -
C:\Users\Admin\AppData\Local\obtenebrate\corynteria.exe"C:\Users\Admin\AppData\Local\Temp\z27FACTURA09654700.BAT.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4344 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Users\Admin\AppData\Local\Temp\z27FACTURA09654700.BAT.exe"3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1664
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
239KB
MD500370753943d9a11be05b9d18ee97197
SHA11555b2a50202f4f46fa796277c269fe3d8cb90fa
SHA256a1f5563609a0d55bf813d88b864cdef5ea91c0012de215db73e4f72428596a75
SHA5124d42176734391d746d2b6df9c8b2e293e9bcbd49a5cd0fc1be8c7ae36def70b0740dbe1dbf88406f65937a1eaf8dedd9897a5f365d15a67f365b780ce40a2bc7
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Filesize
28KB
MD59ba42eb54f59dbd92ea3603a8ce31beb
SHA163a08b907e72b79b4781848aa25f76bdaf3103d9
SHA25606d40c1d942dc7d5827d4098943c1d9088a47bda344cd79275f7c8518d390bc9
SHA512791fe6f2de331e0edfb1068c67fa051bc5e60540018c264aa609321a83d64c6bff97e3e96d3d598c7f7a0967087f09d22a0c282dfad1be34033e4f2ebc7d1e58
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Filesize
1.0MB
MD5aed00ff3e85dbf1bbf99939966939b3a
SHA1d02a5bc420207a7958e34a4740968439969f5b19
SHA256b772162c5b510c5427be045abfdc43c29756217e2ed924ce4c4388bd457a4987
SHA51208ad4f11a67a9e8228d83e96fbcccd98910d53ff2929e2d70d336b8e808d4d7e37f90d157e2747b744eb19b451aba2a0985022207a68ff50dcbd8cdef5e1f50a