Analysis
- max time kernel
60s - max time network
105s - platform
windows10_x64 - resource
win10v20201028 - submitted
09/11/2020, 20:19
Static task
static1
Behavioral task
behavioral1
Sample
PI for requested order pdf.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
PI for requested order pdf.exe
Resource
win10v20201028
General
- Target PI for requested order pdf.exe
- Size 478KB
- Sample201109-2f4gy2xt7x
- SHA256 6b28cef94075f6c39522b87d945eb0f895387e217a6cd7f6f3e260eef60f32f6
- MD5 47e2e13fff82210841602e2c3691b1ed
- SHA1 1b3cab38ac7a04dc9ea1a98453de4aa21df5f24f
- SHA512 507c378feb95d9a5a597beece841ad21ecddfa2f9f4f916720544ebceabc2aa0426136327285d338766d2f11e362f6b1df8e35d8cb4490906df6ceacc587f41b
- MD5 SHA1 SHA512
Malware Config
Extracted
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agenttesla
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Protocol
smtp
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Host
us2.smtp.mailhostbox.com
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Port
587
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Username
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Password
lFAvm@p#@z92
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
resource yara_rule behavioral2/memory/3176-2-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla behavioral2/memory/3176-3-0x000000000044C3DE-mapping.dmp family_agenttesla - 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 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\MJVkSQ = "C:\\Users\\Admin\\AppData\\Roaming\\MJVkSQ\\MJVkSQ.exe" PI for requested order pdf.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1192 set thread context of 3176 1192 PI for requested order pdf.exe 80 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2604 schtasks.exe - Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1192 PI for requested order pdf.exe 1192 PI for requested order pdf.exe 1192 PI for requested order pdf.exe 1192 PI for requested order pdf.exe 3176 PI for requested order pdf.exe 3176 PI for requested order pdf.exe - Suspicious behavior: RenamesItself 1 IoCs
pid Process 3176 PI for requested order pdf.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1192 PI for requested order pdf.exe Token: SeDebugPrivilege 3176 PI for requested order pdf.exe - Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 1192 wrote to memory of 2604 1192 PI for requested order pdf.exe 76 PID 1192 wrote to memory of 2604 1192 PI for requested order pdf.exe 76 PID 1192 wrote to memory of 2604 1192 PI for requested order pdf.exe 76 PID 1192 wrote to memory of 2432 1192 PI for requested order pdf.exe 78 PID 1192 wrote to memory of 2432 1192 PI for requested order pdf.exe 78 PID 1192 wrote to memory of 2432 1192 PI for requested order pdf.exe 78 PID 1192 wrote to memory of 328 1192 PI for requested order pdf.exe 79 PID 1192 wrote to memory of 328 1192 PI for requested order pdf.exe 79 PID 1192 wrote to memory of 328 1192 PI for requested order pdf.exe 79 PID 1192 wrote to memory of 3176 1192 PI for requested order pdf.exe 80 PID 1192 wrote to memory of 3176 1192 PI for requested order pdf.exe 80 PID 1192 wrote to memory of 3176 1192 PI for requested order pdf.exe 80 PID 1192 wrote to memory of 3176 1192 PI for requested order pdf.exe 80 PID 1192 wrote to memory of 3176 1192 PI for requested order pdf.exe 80 PID 1192 wrote to memory of 3176 1192 PI for requested order pdf.exe 80 PID 1192 wrote to memory of 3176 1192 PI for requested order pdf.exe 80 PID 1192 wrote to memory of 3176 1192 PI for requested order pdf.exe 80 PID 3176 wrote to memory of 1188 3176 PI for requested order pdf.exe 84 PID 3176 wrote to memory of 1188 3176 PI for requested order pdf.exe 84 PID 3176 wrote to memory of 1188 3176 PI for requested order pdf.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\PI for requested order pdf.exe"C:\Users\Admin\AppData\Local\Temp\PI for requested order pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1192 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ErgokyipIesDW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6353.tmp"2⤵
- Creates scheduled task(s)
PID:2604
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C:\Users\Admin\AppData\Local\Temp\PI for requested order pdf.exe"{path}"2⤵PID:2432
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C:\Users\Admin\AppData\Local\Temp\PI for requested order pdf.exe"{path}"2⤵PID:328
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C:\Users\Admin\AppData\Local\Temp\PI for requested order pdf.exe"{path}"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3176 -
C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵PID:1188
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