Analysis
- max time kernel
143s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
21/04/2023, 15:48
General
- Target Halkbank_Ekstre_20191102_073809_405251-PDF.exe
- Size 623KB
- Sample230421-s8shmaae2s
- SHA256 dd9b460fcb30009b31df7cafc33c7a3d4b058b2841bf34a4322f1724db932c5f
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
- 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).
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 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\Halkbank_Ekstre_20191102_073809_405251-PDF.exe"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20191102_073809_405251-PDF.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\klvbnsru.exe"C:\Users\Admin\AppData\Local\Temp\klvbnsru.exe" C:\Users\Admin\AppData\Local\Temp\ccnlarjkqs.g2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\klvbnsru.exe"C:\Users\Admin\AppData\Local\Temp\klvbnsru.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
ccnlarjkqs.g
klvbnsru.exe
klvbnsru.exe
klvbnsru.exe
xtizg.emo
memory/1424-148-0x0000000004FB0000-0x0000000005016000-memory.dmp
memory/1424-152-0x00000000023E0000-0x00000000023F0000-memory.dmp
memory/1424-144-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1424-146-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1424-147-0x0000000004970000-0x0000000004F14000-memory.dmp
memory/1424-141-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1424-149-0x00000000023E0000-0x00000000023F0000-memory.dmp
memory/1424-150-0x00000000023E0000-0x00000000023F0000-memory.dmp
memory/1424-151-0x00000000023E0000-0x00000000023F0000-memory.dmp
memory/1424-143-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1424-153-0x0000000006180000-0x0000000006212000-memory.dmp
memory/1424-154-0x0000000006400000-0x000000000640A000-memory.dmp
memory/1424-155-0x0000000006440000-0x0000000006490000-memory.dmp
memory/1424-156-0x00000000064B0000-0x0000000006672000-memory.dmp
memory/1424-158-0x00000000023E0000-0x00000000023F0000-memory.dmp
memory/1424-159-0x00000000023E0000-0x00000000023F0000-memory.dmp
memory/1424-160-0x00000000023E0000-0x00000000023F0000-memory.dmp
memory/1424-161-0x00000000023E0000-0x00000000023F0000-memory.dmp