Analysis
- max time kernel
138s - max time network
126s - platform
windows7_x64 - resource
win7 - submitted
14/09/2020, 05:56
Static task
static1
Behavioral task
behavioral1
Sample
906e5190816f545d0a3f9d416d8e1706.exe
Resource
win7
Behavioral task
behavioral2
Sample
906e5190816f545d0a3f9d416d8e1706.exe
Resource
win10v200722
General
- Target 906e5190816f545d0a3f9d416d8e1706.exe
- Size 1.2MB
- Sample200914-45v5cqa33a
- SHA256 33116366ba07e00a86a84e5de1a4f0b39c9af17f5c777111f61b4b02b638e5e6
- MD5 906e5190816f545d0a3f9d416d8e1706
- SHA1 7e97d17f2b5c58e6e2d8a8b71771a7c8a839c136
- SHA512 4110cadd3ac102f510d430abf2a381634fcc570da6378a806d4da3eb162a8fab232a57fb0060ee70623f728874925243fc0bcabcccb8e0f2a5510ce9fe9eb904
- MD5 SHA1 SHA512
Malware Config
Extracted
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agenttesla
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Protocol
smtp
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Host
mail.b.hostedemail.com
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Port
587
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Username
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Password
Malaysia147
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 4 IoCs
resource yara_rule behavioral1/memory/628-17-0x0000000000400000-0x0000000000466000-memory.dmp family_agenttesla behavioral1/memory/628-18-0x000000000046123E-mapping.dmp family_agenttesla behavioral1/memory/628-20-0x0000000000400000-0x0000000000466000-memory.dmp family_agenttesla behavioral1/memory/628-21-0x0000000000400000-0x0000000000466000-memory.dmp family_agenttesla - Executes dropped EXE 2 IoCs
pid Process 1448 ndsg.exe 628 AddInProcess32.exe - Loads dropped DLL 2 IoCs
pid Process 1612 906e5190816f545d0a3f9d416d8e1706.exe 1448 ndsg.exe - Obfuscated with Agile.Net obfuscator 1 IoCs
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
resource yara_rule behavioral1/memory/1612-3-0x00000000003E0000-0x00000000003EB000-memory.dmp agile_net - Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Adds Run key to start application 2 TTPs 3 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\57QwA12 = "C:\\Users\\Admin\\AppData\\Roaming\\57QwA12\\57QwA12.exe" AddInProcess32.exe Key created \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run reg.exe Set value (str) \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\nsmu = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\ndsg.exe" reg.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1448 set thread context of 628 1448 ndsg.exe 32 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 1612 906e5190816f545d0a3f9d416d8e1706.exe 1612 906e5190816f545d0a3f9d416d8e1706.exe 1448 ndsg.exe 1448 ndsg.exe 1448 ndsg.exe 628 AddInProcess32.exe 628 AddInProcess32.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1612 906e5190816f545d0a3f9d416d8e1706.exe Token: SeDebugPrivilege 1448 ndsg.exe Token: SeDebugPrivilege 628 AddInProcess32.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 628 AddInProcess32.exe - Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 1612 wrote to memory of 2024 1612 906e5190816f545d0a3f9d416d8e1706.exe 28 PID 1612 wrote to memory of 2024 1612 906e5190816f545d0a3f9d416d8e1706.exe 28 PID 1612 wrote to memory of 2024 1612 906e5190816f545d0a3f9d416d8e1706.exe 28 PID 1612 wrote to memory of 2024 1612 906e5190816f545d0a3f9d416d8e1706.exe 28 PID 2024 wrote to memory of 2016 2024 cmd.exe 30 PID 2024 wrote to memory of 2016 2024 cmd.exe 30 PID 2024 wrote to memory of 2016 2024 cmd.exe 30 PID 2024 wrote to memory of 2016 2024 cmd.exe 30 PID 1612 wrote to memory of 1448 1612 906e5190816f545d0a3f9d416d8e1706.exe 31 PID 1612 wrote to memory of 1448 1612 906e5190816f545d0a3f9d416d8e1706.exe 31 PID 1612 wrote to memory of 1448 1612 906e5190816f545d0a3f9d416d8e1706.exe 31 PID 1612 wrote to memory of 1448 1612 906e5190816f545d0a3f9d416d8e1706.exe 31 PID 1448 wrote to memory of 628 1448 ndsg.exe 32 PID 1448 wrote to memory of 628 1448 ndsg.exe 32 PID 1448 wrote to memory of 628 1448 ndsg.exe 32 PID 1448 wrote to memory of 628 1448 ndsg.exe 32 PID 1448 wrote to memory of 628 1448 ndsg.exe 32 PID 1448 wrote to memory of 628 1448 ndsg.exe 32 PID 1448 wrote to memory of 628 1448 ndsg.exe 32 PID 1448 wrote to memory of 628 1448 ndsg.exe 32 PID 1448 wrote to memory of 628 1448 ndsg.exe 32
Processes
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C:\Users\Admin\AppData\Local\Temp\906e5190816f545d0a3f9d416d8e1706.exe"C:\Users\Admin\AppData\Local\Temp\906e5190816f545d0a3f9d416d8e1706.exe"1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1612 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v nsmu /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\ndsg.exe"2⤵
- Suspicious use of WriteProcessMemory
PID:2024 -
C:\Windows\SysWOW64\reg.exeREG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v nsmu /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\ndsg.exe"3⤵
- Adds Run key to start application
PID:2016
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C:\Users\Admin\ndsg.exe"C:\Users\Admin\ndsg.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1448 -
C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:628
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