Analysis
- max time kernel
133s - max time network
127s - platform
windows10_x64 - resource
win10 - submitted
13/10/2020, 07:55
General
- Target Pictures_logo jpeg jpeg jpeg.exe
- Size 257KB
- Sample201013-mldmcpjzqs
- SHA256 6f0c4fde6a68ef453982bb4958cb5d571cf45179b2bc623fa4cc9a8f69f85823
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.privateemail.com
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Port
587
-
Username
-
Password
manofpeace123
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
- AgentTesla Payload 2 IoCs
- Looks for VirtualBox Guest Additions in registry 2 TTPs
- Looks for VMWare Tools registry key 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Drops startup file 2 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- Suspicious use of NtSetInformationThreadHideFromDebugger 13 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Program crash 1 IoCs
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Pictures_logo jpeg jpeg jpeg.exe"C:\Users\Admin\AppData\Local\Temp\Pictures_logo jpeg jpeg jpeg.exe"1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Drops startup file
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 42⤵
- Delays execution with timeout.exe
-
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C:\Users\Admin\AppData\Local\Temp\Pictures_logo jpeg jpeg jpeg.exe"C:\Users\Admin\AppData\Local\Temp\Pictures_logo jpeg jpeg jpeg.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2896 -s 20002⤵
- Program crash
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1620-9-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1620-17-0x0000000005700000-0x0000000005701000-memory.dmp
memory/1620-11-0x00000000739C0000-0x00000000740AE000-memory.dmp
memory/2588-16-0x0000000004D20000-0x0000000004D21000-memory.dmp
memory/2896-5-0x0000000007930000-0x0000000007931000-memory.dmp
memory/2896-0-0x00000000739C0000-0x00000000740AE000-memory.dmp
memory/2896-7-0x00000000011C0000-0x000000000120D000-memory.dmp
memory/2896-8-0x0000000007890000-0x0000000007891000-memory.dmp
memory/2896-4-0x0000000005400000-0x0000000005401000-memory.dmp
memory/2896-3-0x0000000005420000-0x0000000005421000-memory.dmp
memory/2896-2-0x0000000005830000-0x0000000005831000-memory.dmp
memory/2896-1-0x0000000000BC0000-0x0000000000BC1000-memory.dmp