Analysis
- max time kernel
150s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
01/06/2023, 06:05
General
- Target 667ee35c50d1fa03505b45d7937f97b1.exe
- Size 735KB
- Sample230601-gs581ach52
- SHA256 fe304cb0925bffe7c7314fb8c4bc50c15b82e49c81fe176c8482ea1ed6f51bc8
Malware Config
Extracted
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agenttesla
-
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
kV$bSqJ1 daniel
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Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 7 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\667ee35c50d1fa03505b45d7937f97b1.exe"C:\Users\Admin\AppData\Local\Temp\667ee35c50d1fa03505b45d7937f97b1.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\KQArZb.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KQArZb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp248F.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\667ee35c50d1fa03505b45d7937f97b1.exe"C:\Users\Admin\AppData\Local\Temp\667ee35c50d1fa03505b45d7937f97b1.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\667ee35c50d1fa03505b45d7937f97b1.exe"C:\Users\Admin\AppData\Local\Temp\667ee35c50d1fa03505b45d7937f97b1.exe"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
__PSScriptPolicyTest_iptt4waj.ybv.ps1
tmp248F.tmp
memory/2200-162-0x00000000057B0000-0x00000000057C0000-memory.dmp
memory/2200-148-0x0000000000400000-0x0000000000430000-memory.dmp
memory/2200-190-0x00000000057B0000-0x00000000057C0000-memory.dmp
memory/2200-184-0x0000000007830000-0x00000000079F2000-memory.dmp
memory/2200-183-0x0000000007610000-0x0000000007660000-memory.dmp
memory/3044-164-0x00000000052A0000-0x00000000052B0000-memory.dmp
memory/3044-163-0x0000000006640000-0x000000000665E000-memory.dmp
memory/3044-146-0x00000000052A0000-0x00000000052B0000-memory.dmp
memory/3044-147-0x00000000058E0000-0x0000000005F08000-memory.dmp
memory/3044-144-0x0000000002CF0000-0x0000000002D26000-memory.dmp
memory/3044-150-0x0000000005870000-0x0000000005892000-memory.dmp
memory/3044-187-0x0000000007C60000-0x0000000007C68000-memory.dmp
memory/3044-157-0x0000000005FF0000-0x0000000006056000-memory.dmp
memory/3044-156-0x0000000005F80000-0x0000000005FE6000-memory.dmp
memory/3044-186-0x0000000007C80000-0x0000000007C9A000-memory.dmp
memory/3044-185-0x0000000007B70000-0x0000000007B7E000-memory.dmp
memory/3044-166-0x0000000070DD0000-0x0000000070E1C000-memory.dmp
memory/3044-165-0x0000000006C20000-0x0000000006C52000-memory.dmp
memory/3044-182-0x0000000007BC0000-0x0000000007C56000-memory.dmp
memory/3044-176-0x0000000006BE0000-0x0000000006BFE000-memory.dmp
memory/3044-178-0x0000000007F80000-0x00000000085FA000-memory.dmp
memory/3044-179-0x0000000007940000-0x000000000795A000-memory.dmp
memory/3044-180-0x000000007F410000-0x000000007F420000-memory.dmp
memory/3044-181-0x00000000079B0000-0x00000000079BA000-memory.dmp
memory/4300-135-0x0000000005810000-0x00000000058A2000-memory.dmp
memory/4300-139-0x0000000008650000-0x00000000086EC000-memory.dmp
memory/4300-138-0x00000000056D0000-0x00000000056E0000-memory.dmp
memory/4300-133-0x0000000000E20000-0x0000000000EDE000-memory.dmp
memory/4300-136-0x00000000056D0000-0x00000000056E0000-memory.dmp
memory/4300-134-0x0000000005D20000-0x00000000062C4000-memory.dmp
memory/4300-137-0x0000000005770000-0x000000000577A000-memory.dmp