Analysis
- max time kernel
142s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20230621-en - resource tags
- submitted
22/06/2023, 07:47
General
- Target SecuriteInfo.com.Gen.Variant.Nemesis.22775.16398.31863.exe
- Size 368KB
- Sample230622-jmh8dsed8z
- SHA256 ada8b68992f2e54fecfd3a003562da77b9d643f3cc1acb1fe1f2560a32b593db
Malware Config
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Loads dropped DLL 1 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
- 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).
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Gen.Variant.Nemesis.22775.16398.31863.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Gen.Variant.Nemesis.22775.16398.31863.exe"1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Gen.Variant.Nemesis.22775.16398.31863.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Gen.Variant.Nemesis.22775.16398.31863.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
ujqesxs.dll
memory/3800-141-0x0000000000400000-0x0000000000441000-memory.dmp
memory/3800-142-0x0000000000400000-0x0000000000441000-memory.dmp
memory/3800-143-0x0000000000400000-0x0000000000441000-memory.dmp
memory/3800-144-0x0000000000400000-0x0000000000441000-memory.dmp
memory/3800-145-0x0000000004A40000-0x0000000004FE4000-memory.dmp
memory/3800-146-0x0000000004FF0000-0x0000000005056000-memory.dmp
memory/3800-147-0x0000000004A30000-0x0000000004A40000-memory.dmp
memory/3800-148-0x0000000004A30000-0x0000000004A40000-memory.dmp
memory/3800-149-0x0000000004A30000-0x0000000004A40000-memory.dmp
memory/3800-150-0x0000000005CD0000-0x0000000005D20000-memory.dmp
memory/3800-151-0x0000000005D20000-0x0000000005EE2000-memory.dmp
memory/3800-152-0x0000000005F00000-0x0000000005F92000-memory.dmp
memory/3800-153-0x0000000006010000-0x000000000601A000-memory.dmp
memory/3800-155-0x0000000004A30000-0x0000000004A40000-memory.dmp
memory/3800-156-0x0000000004A30000-0x0000000004A40000-memory.dmp
memory/3800-157-0x0000000004A30000-0x0000000004A40000-memory.dmp