Analysis
- max time kernel
20s - max time network
114s - platform
windows10_x64 - resource
win10v20201028 - submitted
24/12/2020, 16:54
General
- Target fab3a68fedd9933f998263cab59dc44c.exe
- Size 689KB
- Sample201224-wpsfr7wc4s
- SHA256 034b2bece85b5055df0d14320162c2f400807df76df7dc93a059b9f0b7c54ec2
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\fab3a68fedd9933f998263cab59dc44c.exe"C:\Users\Admin\AppData\Local\Temp\fab3a68fedd9933f998263cab59dc44c.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/504-14-0x0000000009E40000-0x0000000009E41000-memory.dmp
memory/504-10-0x0000000072E00000-0x00000000734EE000-memory.dmp
memory/504-25-0x000000000BFB0000-0x000000000BFB1000-memory.dmp
memory/504-7-0x00000000053D1000-0x00000000053D2000-memory.dmp
memory/504-8-0x00000000054C0000-0x00000000054C1000-memory.dmp
memory/504-9-0x0000000007050000-0x0000000007051000-memory.dmp
memory/504-15-0x00000000097B0000-0x00000000097B1000-memory.dmp
memory/504-11-0x0000000006E10000-0x0000000006E34000-memory.dmp
memory/504-12-0x0000000009940000-0x0000000009941000-memory.dmp
memory/504-13-0x0000000006ED0000-0x0000000006EF2000-memory.dmp
memory/504-24-0x000000000BD70000-0x000000000BD71000-memory.dmp
memory/504-20-0x000000000B3A0000-0x000000000B3A1000-memory.dmp
memory/504-17-0x0000000009840000-0x0000000009841000-memory.dmp
memory/504-18-0x000000000A4E0000-0x000000000A4E1000-memory.dmp
memory/504-19-0x000000000B1D0000-0x000000000B1D1000-memory.dmp
memory/504-16-0x00000000097F0000-0x00000000097F1000-memory.dmp
memory/504-21-0x000000000B9E0000-0x000000000B9E1000-memory.dmp
memory/504-22-0x000000000BA80000-0x000000000BA81000-memory.dmp
memory/504-23-0x000000000BB10000-0x000000000BB11000-memory.dmp
memory/4700-2-0x00000000052B4000-0x00000000052B5000-memory.dmp
memory/4700-3-0x0000000005590000-0x0000000005591000-memory.dmp