Analysis
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max time kernel
32s -
max time network
28s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
01-11-2020 07:09
Static task
static1
Behavioral task
behavioral1
Sample
c874fdd56be015a88e2601fef012e65b.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
c874fdd56be015a88e2601fef012e65b.exe
Resource
win10v20201028
General
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Target
c874fdd56be015a88e2601fef012e65b.exe
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Size
780KB
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MD5
c874fdd56be015a88e2601fef012e65b
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SHA1
1665a05e0df0e9e7591169c51c9f4786e272ea9f
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SHA256
3a03caf2576c95ca77b28748f1a697e3f8572975500b1c72ca711c489e1d7b12
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SHA512
5bb69f9cb67f7fc0d6c6f91609f513063b2feb03f789c1a39772523d63267ec72da7ea83356e5c43eb1427f46a6edd0c4c7d924e0223e39ddb7e55ad03ee3de0
Malware Config
Signatures
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RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
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RedLine Payload 2 IoCs
Processes:
resource yara_rule behavioral1/memory/1568-15-0x0000000002630000-0x0000000002654000-memory.dmp family_redline behavioral1/memory/1568-16-0x00000000040A0000-0x00000000040C2000-memory.dmp family_redline -
Executes dropped EXE 1 IoCs
Processes:
bestof.exepid process 1568 bestof.exe -
Loads dropped DLL 1 IoCs
Processes:
c874fdd56be015a88e2601fef012e65b.exepid process 288 c874fdd56be015a88e2601fef012e65b.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 8 ip-api.com 14 checkip.amazonaws.com -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
c874fdd56be015a88e2601fef012e65b.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 c874fdd56be015a88e2601fef012e65b.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString c874fdd56be015a88e2601fef012e65b.exe -
Processes:
c874fdd56be015a88e2601fef012e65b.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13 c874fdd56be015a88e2601fef012e65b.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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 c874fdd56be015a88e2601fef012e65b.exe -
Runs ping.exe 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
bestof.exepid process 1568 bestof.exe 1568 bestof.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
bestof.exedescription pid process Token: SeDebugPrivilege 1568 bestof.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
c874fdd56be015a88e2601fef012e65b.exebestof.execmd.exedescription pid process target process PID 288 wrote to memory of 1568 288 c874fdd56be015a88e2601fef012e65b.exe bestof.exe PID 288 wrote to memory of 1568 288 c874fdd56be015a88e2601fef012e65b.exe bestof.exe PID 288 wrote to memory of 1568 288 c874fdd56be015a88e2601fef012e65b.exe bestof.exe PID 288 wrote to memory of 1568 288 c874fdd56be015a88e2601fef012e65b.exe bestof.exe PID 1568 wrote to memory of 1352 1568 bestof.exe cmd.exe PID 1568 wrote to memory of 1352 1568 bestof.exe cmd.exe PID 1568 wrote to memory of 1352 1568 bestof.exe cmd.exe PID 1568 wrote to memory of 1352 1568 bestof.exe cmd.exe PID 1352 wrote to memory of 1556 1352 cmd.exe PING.EXE PID 1352 wrote to memory of 1556 1352 cmd.exe PING.EXE PID 1352 wrote to memory of 1556 1352 cmd.exe PING.EXE PID 1352 wrote to memory of 1556 1352 cmd.exe PING.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\c874fdd56be015a88e2601fef012e65b.exe"C:\Users\Admin\AppData\Local\Temp\c874fdd56be015a88e2601fef012e65b.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\gfersesurity\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
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Roaming\gfersesurity\bestof.exeMD5
6943b3380427465a7998ddf3a96945a0
SHA1abb680ef5e005da1610828d518c15a250b001fd9
SHA25694e489927f1f04b50d80382b4ebbb245d8b0cd55f36dac8d7de3c543cbf361fb
SHA5125c8fb35986df56b3f6f7b850a98455ab3d767372b57838d54c9faf280826975a0f2a0828fa977469a3d5e02ce9f7bea23e8b574cf793f4264f385e871de8277d
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\Users\Admin\AppData\Roaming\gfersesurity\bestof.exeMD5
6943b3380427465a7998ddf3a96945a0
SHA1abb680ef5e005da1610828d518c15a250b001fd9
SHA25694e489927f1f04b50d80382b4ebbb245d8b0cd55f36dac8d7de3c543cbf361fb
SHA5125c8fb35986df56b3f6f7b850a98455ab3d767372b57838d54c9faf280826975a0f2a0828fa977469a3d5e02ce9f7bea23e8b574cf793f4264f385e871de8277d
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memory/288-1-0x0000000003EE0000-0x0000000003EF1000-memory.dmpFilesize
68KB
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memory/288-0-0x0000000002487000-0x0000000002488000-memory.dmpFilesize
4KB
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memory/1332-2-0x000007FEF5E00000-0x000007FEF607A000-memory.dmpFilesize
2.5MB
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memory/1352-18-0x0000000000000000-mapping.dmp
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memory/1556-19-0x0000000000000000-mapping.dmp
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memory/1568-10-0x0000000002789000-0x000000000278A000-memory.dmpFilesize
4KB
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memory/1568-12-0x0000000003DB0000-0x0000000003DC1000-memory.dmpFilesize
68KB
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memory/1568-14-0x0000000073810000-0x0000000073EFE000-memory.dmpFilesize
6.9MB
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memory/1568-15-0x0000000002630000-0x0000000002654000-memory.dmpFilesize
144KB
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memory/1568-16-0x00000000040A0000-0x00000000040C2000-memory.dmpFilesize
136KB
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memory/1568-11-0x0000000003C60000-0x0000000003C71000-memory.dmpFilesize
68KB
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memory/1568-8-0x0000000000000000-mapping.dmp