Analysis
- max time kernel
143s - max time network
129s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
28/02/2023, 14:00
General
- Target SO# A56DX04471 JOB#SZYC23021891.exe
- Size 316KB
- Sample230228-razzdabc4y
- SHA256 7581026b5d2f0521ed0e40ef5ad28dec7c9b3e2b113cceea5eb63483af1463d6
Malware Config
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Executes dropped EXE 2 IoCs
- 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
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SO# A56DX04471 JOB#SZYC23021891.exe"C:\Users\Admin\AppData\Local\Temp\SO# A56DX04471 JOB#SZYC23021891.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\egozsz.exe"C:\Users\Admin\AppData\Local\Temp\egozsz.exe" C:\Users\Admin\AppData\Local\Temp\khgdkzhrck.yg2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\egozsz.exe"C:\Users\Admin\AppData\Local\Temp\egozsz.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- 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
egozsz.exe
egozsz.exe
egozsz.exe
khgdkzhrck.yg
rsbqtfznjok.b
memory/5108-149-0x00000000049E0000-0x0000000004A46000-memory.dmp
memory/5108-153-0x0000000004A50000-0x0000000004A60000-memory.dmp
memory/5108-145-0x0000000000400000-0x0000000000441000-memory.dmp
memory/5108-147-0x0000000000400000-0x0000000000441000-memory.dmp
memory/5108-148-0x0000000004A60000-0x0000000005004000-memory.dmp
memory/5108-142-0x0000000000400000-0x0000000000441000-memory.dmp
memory/5108-152-0x0000000004A50000-0x0000000004A60000-memory.dmp
memory/5108-151-0x0000000004A50000-0x0000000004A60000-memory.dmp
memory/5108-150-0x0000000004A50000-0x0000000004A60000-memory.dmp
memory/5108-144-0x0000000000400000-0x0000000000441000-memory.dmp
memory/5108-154-0x0000000005880000-0x0000000005912000-memory.dmp
memory/5108-155-0x00000000059B0000-0x00000000059BA000-memory.dmp
memory/5108-156-0x00000000059F0000-0x0000000005A40000-memory.dmp
memory/5108-157-0x0000000005C20000-0x0000000005DE2000-memory.dmp
memory/5108-159-0x0000000004A50000-0x0000000004A60000-memory.dmp
memory/5108-160-0x0000000004A50000-0x0000000004A60000-memory.dmp
memory/5108-161-0x0000000004A50000-0x0000000004A60000-memory.dmp
memory/5108-162-0x0000000004A50000-0x0000000004A60000-memory.dmp