Analysis
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max time kernel
88s -
max time network
52s -
platform
windows7_x64 -
resource
win7v200430 -
submitted
10/07/2020, 07:06
Static task
static1
Behavioral task
behavioral1
Sample
po=593624.exe
Resource
win7v200430
Behavioral task
behavioral2
Sample
po=593624.exe
Resource
win10
General
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Target
po=593624.exe
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Size
410KB
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MD5
ba0ebf1fef1d06e21378af70a1e8babe
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SHA1
b0d07ccd59b84569841d2aa3a0529cedb7d7ecc4
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SHA256
744b624507df8e9bccf72af6cc834130ad75deb8c1beff8084cd101605c8eec1
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SHA512
ce49bc92c10916afbc9f7c8bc1d9c34184f674f62f03ac02b600c335aec5873c4dcaaa6dd275f539bafa088f8ae79dd197269c85bb7b59e8b3598c8c0ed5954a
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
web2.changeip.com - Port:
587 - Username:
[email protected] - Password:
OGywVbROjkvK
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 4 IoCs
resource yara_rule behavioral1/memory/1604-4-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1604-5-0x0000000000446B5E-mapping.dmp family_agenttesla behavioral1/memory/1604-6-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1604-7-0x0000000000400000-0x000000000044C000-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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Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1064 set thread context of 1604 1064 po=593624.exe 26 -
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.
pid Process 772 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1604 po=593624.exe 1604 po=593624.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1604 po=593624.exe -
Suspicious use of WriteProcessMemory 13 IoCs
description pid Process procid_target PID 1064 wrote to memory of 772 1064 po=593624.exe 24 PID 1064 wrote to memory of 772 1064 po=593624.exe 24 PID 1064 wrote to memory of 772 1064 po=593624.exe 24 PID 1064 wrote to memory of 772 1064 po=593624.exe 24 PID 1064 wrote to memory of 1604 1064 po=593624.exe 26 PID 1064 wrote to memory of 1604 1064 po=593624.exe 26 PID 1064 wrote to memory of 1604 1064 po=593624.exe 26 PID 1064 wrote to memory of 1604 1064 po=593624.exe 26 PID 1064 wrote to memory of 1604 1064 po=593624.exe 26 PID 1064 wrote to memory of 1604 1064 po=593624.exe 26 PID 1064 wrote to memory of 1604 1064 po=593624.exe 26 PID 1064 wrote to memory of 1604 1064 po=593624.exe 26 PID 1064 wrote to memory of 1604 1064 po=593624.exe 26
Processes
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C:\Users\Admin\AppData\Local\Temp\po=593624.exe"C:\Users\Admin\AppData\Local\Temp\po=593624.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1064 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CzVjnXZqugxQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF102.tmp"2⤵
- Creates scheduled task(s)
PID:772
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C:\Users\Admin\AppData\Local\Temp\po=593624.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1604
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