Analysis
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max time kernel
117s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
02-10-2024 16:16
Static task
static1
Behavioral task
behavioral1
Sample
tmp5inh3zk1.exe
Resource
win7-20240903-en
General
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Target
tmp5inh3zk1.exe
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Size
733KB
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MD5
c80a6ab88197ae041f37e89de88c432c
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SHA1
2ff5a4f5d4c598e910a331e04dcc17a6a8c0cd82
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SHA256
b653369d65923416167ddd72e78411fed77a2b7be24bf6c1eba06512a232594a
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SHA512
7892a721f51a7d686129638ee47c4f7f15cdaaa221004cb4a52fde29111c44aac03b3a7dcc3044ae624f07870cedc00cc0e884e1801432d6bb9e6511acc0cdb9
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SSDEEP
12288:+L7WTG4meL6865A0phF2/lDHwu+yIlohn+9T5FfbsCsaYbRu:MSTVh6RNQIlo03NsCTIR
Malware Config
Extracted
Protocol: smtp- Host:
mail.bonnyriggdentalsurgery.com.au - Port:
587 - Username:
[email protected] - Password:
eL)rV@QBKA#m
Extracted
agenttesla
Protocol: smtp- Host:
mail.bonnyriggdentalsurgery.com.au - Port:
587 - Username:
[email protected] - Password:
eL)rV@QBKA#m - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 208 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation tmp5inh3zk1.exe -
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 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 24 ip-api.com 21 api.ipify.org 22 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1004 set thread context of 972 1004 tmp5inh3zk1.exe 89 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmp5inh3zk1.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmp5inh3zk1.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 972 tmp5inh3zk1.exe 972 tmp5inh3zk1.exe 208 powershell.exe 208 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 972 tmp5inh3zk1.exe Token: SeDebugPrivilege 208 powershell.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 1004 wrote to memory of 208 1004 tmp5inh3zk1.exe 87 PID 1004 wrote to memory of 208 1004 tmp5inh3zk1.exe 87 PID 1004 wrote to memory of 208 1004 tmp5inh3zk1.exe 87 PID 1004 wrote to memory of 972 1004 tmp5inh3zk1.exe 89 PID 1004 wrote to memory of 972 1004 tmp5inh3zk1.exe 89 PID 1004 wrote to memory of 972 1004 tmp5inh3zk1.exe 89 PID 1004 wrote to memory of 972 1004 tmp5inh3zk1.exe 89 PID 1004 wrote to memory of 972 1004 tmp5inh3zk1.exe 89 PID 1004 wrote to memory of 972 1004 tmp5inh3zk1.exe 89 PID 1004 wrote to memory of 972 1004 tmp5inh3zk1.exe 89 PID 1004 wrote to memory of 972 1004 tmp5inh3zk1.exe 89
Processes
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C:\Users\Admin\AppData\Local\Temp\tmp5inh3zk1.exe"C:\Users\Admin\AppData\Local\Temp\tmp5inh3zk1.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1004 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\tmp5inh3zk1.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:208
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C:\Users\Admin\AppData\Local\Temp\tmp5inh3zk1.exe"C:\Users\Admin\AppData\Local\Temp\tmp5inh3zk1.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:972
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Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
4Credentials In Files
3Credentials in Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD58ec831f3e3a3f77e4a7b9cd32b48384c
SHA1d83f09fd87c5bd86e045873c231c14836e76a05c
SHA2567667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA51226bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82