Analysis
- max time kernel
142s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
20/03/2023, 09:56
General
- Target Tender QUOTATION_ LH22000309AA2023.exe
- Size 309KB
- Sample230320-lyck4ach23
- SHA256 b4a5e199a29723b27c6aced8f28c7b39f29738bfb2ea3ada079e38c4aad366f4
Malware Config
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Executes dropped EXE 2 IoCs
- 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\Tender QUOTATION_ LH22000309AA2023.exe"C:\Users\Admin\AppData\Local\Temp\Tender QUOTATION_ LH22000309AA2023.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\rtvzitvzef.exe"C:\Users\Admin\AppData\Local\Temp\rtvzitvzef.exe" C:\Users\Admin\AppData\Local\Temp\ggbdhaflcbm.cer2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\rtvzitvzef.exe"C:\Users\Admin\AppData\Local\Temp\rtvzitvzef.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
buvzkr.sej
ggbdhaflcbm.cer
rtvzitvzef.exe
rtvzitvzef.exe
rtvzitvzef.exe
memory/3556-148-0x00000000048B0000-0x0000000004916000-memory.dmp
memory/3556-151-0x0000000004A20000-0x0000000004A30000-memory.dmp
memory/3556-144-0x0000000000400000-0x0000000000441000-memory.dmp
memory/3556-146-0x0000000000400000-0x0000000000441000-memory.dmp
memory/3556-147-0x0000000004A30000-0x0000000004FD4000-memory.dmp
memory/3556-141-0x0000000000400000-0x0000000000441000-memory.dmp
memory/3556-149-0x0000000004A20000-0x0000000004A30000-memory.dmp
memory/3556-150-0x0000000004A20000-0x0000000004A30000-memory.dmp
memory/3556-152-0x0000000004A20000-0x0000000004A30000-memory.dmp
memory/3556-143-0x0000000000400000-0x0000000000441000-memory.dmp
memory/3556-153-0x0000000005740000-0x00000000057D2000-memory.dmp
memory/3556-154-0x0000000005830000-0x000000000583A000-memory.dmp
memory/3556-155-0x0000000005880000-0x00000000058D0000-memory.dmp
memory/3556-157-0x0000000004A20000-0x0000000004A30000-memory.dmp
memory/3556-158-0x0000000004A20000-0x0000000004A30000-memory.dmp
memory/3556-159-0x0000000004A20000-0x0000000004A30000-memory.dmp
memory/3556-160-0x0000000004A20000-0x0000000004A30000-memory.dmp