Analysis
- max time kernel
23s - max time network
113s - platform
windows10_x64 - resource
win10v20201028 - submitted
25/12/2020, 08:47
General
- Target 1a6760ebbff9dfbd8cff877a303df66a.exe
- Size 689KB
- Sample201225-lxc2n4hhhs
- SHA256 96bbdcb417228948effc7c21ddc3a08addcaa2421dca8870b64ea4f9f691dddd
Malware Config
Signatures
- RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
- RedLine Payload 2 IoCs
- Executes dropped EXE 1 IoCs
- UPX packed file 2 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Runs ping.exe 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\1a6760ebbff9dfbd8cff877a303df66a.exe"C:\Users\Admin\AppData\Local\Temp\1a6760ebbff9dfbd8cff877a303df66a.exe"1⤵
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\leadentop\bestof.exebestof.exe2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C ping 127.0.0.1 -n 3 > nul & del ""3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 34⤵
- Runs ping.exe
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2916-15-0x0000000009CD0000-0x0000000009CD1000-memory.dmp
memory/2916-18-0x000000000A360000-0x000000000A361000-memory.dmp
memory/2916-9-0x0000000005430000-0x0000000005431000-memory.dmp
memory/2916-10-0x0000000007190000-0x0000000007191000-memory.dmp
memory/2916-11-0x0000000072A60000-0x000000007314E000-memory.dmp
memory/2916-12-0x0000000006F60000-0x0000000006F84000-memory.dmp
memory/2916-13-0x00000000097D0000-0x00000000097D1000-memory.dmp
memory/2916-14-0x00000000072D0000-0x00000000072F2000-memory.dmp
memory/2916-16-0x000000000A2E0000-0x000000000A2E1000-memory.dmp
memory/2916-17-0x000000000A320000-0x000000000A321000-memory.dmp
memory/2916-8-0x00000000051F1000-0x00000000051F2000-memory.dmp
memory/2916-19-0x000000000A4E0000-0x000000000A4E1000-memory.dmp
memory/2916-20-0x000000000B1D0000-0x000000000B1D1000-memory.dmp
memory/2916-21-0x000000000B3A0000-0x000000000B3A1000-memory.dmp
memory/2916-22-0x000000000B9E0000-0x000000000B9E1000-memory.dmp
memory/2916-23-0x000000000BA80000-0x000000000BA81000-memory.dmp
memory/2916-24-0x000000000BB10000-0x000000000BB11000-memory.dmp
memory/2916-25-0x000000000BD70000-0x000000000BD71000-memory.dmp
memory/2916-26-0x000000000CFD0000-0x000000000CFD1000-memory.dmp
memory/3084-2-0x0000000005444000-0x0000000005445000-memory.dmp
memory/3084-3-0x0000000005690000-0x0000000005691000-memory.dmp