Analysis
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max time kernel
141s -
max time network
50s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
15-09-2021 06:53
Static task
static1
Behavioral task
behavioral1
Sample
required.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
required.exe
Resource
win10-en
General
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Target
required.exe
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Size
1.0MB
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MD5
08a652c3adb52cc860c1b35dc2838f23
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SHA1
6d630ca20b831dfa6db2b33ea1f0a256a1d13e60
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SHA256
63e6198cee195250e7ef3aedecfacdfeb6fdbce9e4f3fd9c1260ef67075819a3
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SHA512
7df0d8df46a9b44652a239c969f2da6bc81f15b91cc6ecfef9b904caf27dc73fa37494113651931f5c866e1f8b42503279addb0d209997a13cd646421d198c5f
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.rosaritoindustries.com - Port:
587 - Username:
inquiry@rosaritoindustries.com - Password:
aircondivision2019
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/1160-68-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/1160-69-0x000000000043784E-mapping.dmp family_agenttesla behavioral1/memory/1160-70-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla -
Drops file in Drivers directory 1 IoCs
Processes:
RegSvcs.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts RegSvcs.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
RegSvcs.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\tKZVPq = "C:\\Users\\Admin\\AppData\\Roaming\\tKZVPq\\tKZVPq.exe" RegSvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
required.exedescription pid process target process PID 1972 set thread context of 1160 1972 required.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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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
required.exeRegSvcs.exepid process 1972 required.exe 1160 RegSvcs.exe 1160 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
required.exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 1972 required.exe Token: SeDebugPrivilege 1160 RegSvcs.exe -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
required.exedescription pid process target process PID 1972 wrote to memory of 856 1972 required.exe schtasks.exe PID 1972 wrote to memory of 856 1972 required.exe schtasks.exe PID 1972 wrote to memory of 856 1972 required.exe schtasks.exe PID 1972 wrote to memory of 856 1972 required.exe schtasks.exe PID 1972 wrote to memory of 1160 1972 required.exe RegSvcs.exe PID 1972 wrote to memory of 1160 1972 required.exe RegSvcs.exe PID 1972 wrote to memory of 1160 1972 required.exe RegSvcs.exe PID 1972 wrote to memory of 1160 1972 required.exe RegSvcs.exe PID 1972 wrote to memory of 1160 1972 required.exe RegSvcs.exe PID 1972 wrote to memory of 1160 1972 required.exe RegSvcs.exe PID 1972 wrote to memory of 1160 1972 required.exe RegSvcs.exe PID 1972 wrote to memory of 1160 1972 required.exe RegSvcs.exe PID 1972 wrote to memory of 1160 1972 required.exe RegSvcs.exe PID 1972 wrote to memory of 1160 1972 required.exe RegSvcs.exe PID 1972 wrote to memory of 1160 1972 required.exe RegSvcs.exe PID 1972 wrote to memory of 1160 1972 required.exe RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\required.exe"C:\Users\Admin\AppData\Local\Temp\required.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\PkrqkOSPOWZhCz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9914.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
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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\tmp9914.tmpMD5
7c736aa7c2da3cb57b9328f7e058dc31
SHA10b613460d9f2fdeb506b8ac2edbe7989a6ecb44b
SHA25679df27f59f9fa883a3c6c8f58102764530e8e4e7a195ac54c7e9ba834fc868a1
SHA512dece70d828feccec17d131313170c79123f0b7855d7b1778b9737f7c3ad92cd1ab9183bb88809efd83b9e5f720e68398ed2c1092f9281c7a341b0cab6b263efd
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memory/856-66-0x0000000000000000-mapping.dmp
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memory/1160-68-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1160-69-0x000000000043784E-mapping.dmp
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memory/1160-70-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/1160-72-0x0000000004A30000-0x0000000004A31000-memory.dmpFilesize
4KB
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memory/1160-73-0x0000000004A31000-0x0000000004A32000-memory.dmpFilesize
4KB
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memory/1972-60-0x0000000000E90000-0x0000000000E91000-memory.dmpFilesize
4KB
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memory/1972-62-0x0000000000C60000-0x0000000000C61000-memory.dmpFilesize
4KB
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memory/1972-63-0x0000000000480000-0x000000000048E000-memory.dmpFilesize
56KB
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memory/1972-64-0x0000000007BC0000-0x0000000007C3D000-memory.dmpFilesize
500KB
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memory/1972-65-0x0000000000CA0000-0x0000000000CDA000-memory.dmpFilesize
232KB