Analysis
-
max time kernel
120s -
max time network
121s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
24-12-2020 16:40
Static task
static1
Behavioral task
behavioral1
Sample
87d557bfd2d8ec6c148f7ab47ee89d28.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
87d557bfd2d8ec6c148f7ab47ee89d28.exe
Resource
win10v20201028
General
-
Target
87d557bfd2d8ec6c148f7ab47ee89d28.exe
-
Size
689KB
-
MD5
87d557bfd2d8ec6c148f7ab47ee89d28
-
SHA1
60e82a3efc232f93bc05762d25915d89726ba4cc
-
SHA256
29197441b575d43a6acc86da8d4169458502f08ed7de1c052a1b300af2012936
-
SHA512
eee5c74d3cf67aa6553023d0bdcc8ada985d02bc898d4cbd48124df0a0a1d6db8a4ef16fafb3b629e05db82f8e2507ac9c85a994e65ca6f437e191030309182e
Malware Config
Signatures
-
RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
-
RedLine Payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/488-11-0x0000000007030000-0x0000000007054000-memory.dmp family_redline behavioral2/memory/488-13-0x00000000072D0000-0x00000000072F2000-memory.dmp family_redline -
Executes dropped EXE 1 IoCs
Processes:
bestof.exepid process 488 bestof.exe -
Processes:
resource yara_rule C:\Users\Admin\AppData\Roaming\leadentop\bestof.exe upx C:\Users\Admin\AppData\Roaming\leadentop\bestof.exe upx -
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.
Processes:
flow ioc 16 ip-api.com -
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.
Processes:
87d557bfd2d8ec6c148f7ab47ee89d28.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 87d557bfd2d8ec6c148f7ab47ee89d28.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 87d557bfd2d8ec6c148f7ab47ee89d28.exe -
Runs ping.exe 1 TTPs 1 IoCs
-
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
bestof.exepid process 488 bestof.exe 488 bestof.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
bestof.exedescription pid process Token: SeDebugPrivilege 488 bestof.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
87d557bfd2d8ec6c148f7ab47ee89d28.exebestof.execmd.exedescription pid process target process PID 732 wrote to memory of 488 732 87d557bfd2d8ec6c148f7ab47ee89d28.exe bestof.exe PID 732 wrote to memory of 488 732 87d557bfd2d8ec6c148f7ab47ee89d28.exe bestof.exe PID 732 wrote to memory of 488 732 87d557bfd2d8ec6c148f7ab47ee89d28.exe bestof.exe PID 488 wrote to memory of 3892 488 bestof.exe cmd.exe PID 488 wrote to memory of 3892 488 bestof.exe cmd.exe PID 488 wrote to memory of 3892 488 bestof.exe cmd.exe PID 3892 wrote to memory of 1160 3892 cmd.exe PING.EXE PID 3892 wrote to memory of 1160 3892 cmd.exe PING.EXE PID 3892 wrote to memory of 1160 3892 cmd.exe PING.EXE
Processes
-
C:\Users\Admin\AppData\Local\Temp\87d557bfd2d8ec6c148f7ab47ee89d28.exe"C:\Users\Admin\AppData\Local\Temp\87d557bfd2d8ec6c148f7ab47ee89d28.exe"1⤵
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:732 -
C:\Users\Admin\AppData\Roaming\leadentop\bestof.exebestof.exe2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:488 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C ping 127.0.0.1 -n 3 > nul & del ""3⤵
- Suspicious use of WriteProcessMemory
PID:3892 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 34⤵
- Runs ping.exe
PID:1160
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
MD5
e8cf0e1662dbf0059e06baa644cfe52c
SHA18b278efbe3666da07725a7dfd512c7aa9e12379b
SHA25613b4456c19c9552d5986582cb97c22888d70f93b88d4f7445ad1c126ef27f5f7
SHA5125d508d4f98cf6184870e4b476638d09ddeef777e0e372a59c3e97428d54df1496640d2948538cc4243f8fd293ac0a48d14cba1ec6620a888d533fb23fdd7db02
-
MD5
e8cf0e1662dbf0059e06baa644cfe52c
SHA18b278efbe3666da07725a7dfd512c7aa9e12379b
SHA25613b4456c19c9552d5986582cb97c22888d70f93b88d4f7445ad1c126ef27f5f7
SHA5125d508d4f98cf6184870e4b476638d09ddeef777e0e372a59c3e97428d54df1496640d2948538cc4243f8fd293ac0a48d14cba1ec6620a888d533fb23fdd7db02