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Analysis
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max time kernel
104s -
max time network
106s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
05/09/2024, 13:59
Static task
static1
Behavioral task
behavioral1
Sample
RFQ-Al NASR-00388.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
RFQ-Al NASR-00388.exe
Resource
win10v2004-20240802-en
General
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Target
RFQ-Al NASR-00388.exe
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Size
1.4MB
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MD5
a1a7b97334260279dd501040e0d8716c
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SHA1
c3aa5d13b6008b5d44084f53eedc524b77730eb2
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SHA256
8504a16c9bdf57fb23adb5346dd748e53c828472eed8c59d38159f33a3fa112a
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SHA512
fcf9a3923a34dafc09240eb2031a7e35508a40c7547907883717183b833751357c9f2792fb6eb7b1ab2ccc23c6094523e49c76cdb5e0a901631190e4d6c3c513
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SSDEEP
12288:jiQyGxHB+0zSaBBg4E/r1wG1OVW2yc5XzaNnfFiCJ47/Z/hS5ZkMvwYV4:mQyehHzSgBrET1BeeIzaNfMZpDtR
Malware Config
Extracted
Protocol: ftp- Host:
ftp.ercolina-usa.com - Port:
21 - Username:
[email protected] - Password:
uy,o#mZj8$lY
Extracted
agenttesla
Protocol: ftp- Host:
ftp://ftp.ercolina-usa.com - Port:
21 - Username:
[email protected] - Password:
uy,o#mZj8$lY
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
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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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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\newapp = "C:\\Users\\Admin\\AppData\\Roaming\\newapp\\newapp.exe" regasm.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 12 api.ipify.org 13 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2328 set thread context of 1008 2328 RFQ-Al NASR-00388.exe 86 -
System Location Discovery: System Language Discovery 1 TTPs 1 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 regasm.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1008 regasm.exe 1008 regasm.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1008 regasm.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1008 regasm.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 2328 wrote to memory of 1008 2328 RFQ-Al NASR-00388.exe 86 PID 2328 wrote to memory of 1008 2328 RFQ-Al NASR-00388.exe 86 PID 2328 wrote to memory of 1008 2328 RFQ-Al NASR-00388.exe 86 PID 2328 wrote to memory of 1008 2328 RFQ-Al NASR-00388.exe 86 PID 2328 wrote to memory of 1008 2328 RFQ-Al NASR-00388.exe 86 PID 2328 wrote to memory of 1008 2328 RFQ-Al NASR-00388.exe 86 PID 2328 wrote to memory of 1008 2328 RFQ-Al NASR-00388.exe 86 PID 2328 wrote to memory of 1008 2328 RFQ-Al NASR-00388.exe 86 PID 2328 wrote to memory of 4512 2328 RFQ-Al NASR-00388.exe 87 PID 2328 wrote to memory of 4512 2328 RFQ-Al NASR-00388.exe 87 PID 2328 wrote to memory of 4512 2328 RFQ-Al NASR-00388.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\RFQ-Al NASR-00388.exe"C:\Users\Admin\AppData\Local\Temp\RFQ-Al NASR-00388.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2328 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"2⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1008
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"2⤵PID:4512
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Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1