Analysis
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max time kernel
135s -
max time network
137s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
01-11-2020 07:01
Static task
static1
Behavioral task
behavioral1
Sample
cb4255d73d0fd4ce9a13464ddae05d54.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
cb4255d73d0fd4ce9a13464ddae05d54.exe
Resource
win10v20201028
General
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Target
cb4255d73d0fd4ce9a13464ddae05d54.exe
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Size
781KB
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MD5
cb4255d73d0fd4ce9a13464ddae05d54
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SHA1
75c531c0bf974395be88ea678b95561de4e8966d
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SHA256
7b6c0334b1cc26e87e6a071ed278dd0781634460e0de56245fc306624340fb21
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SHA512
63b885330de0e8a07919a267b751cab364c302a35d093ca73a42ca4599365675a7cdb4278134b7bb10fe2dc72d039ad3704e7bc0eca8ac9db93ed7ee0dd56ed4
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/1380-10-0x0000000003E70000-0x0000000003E94000-memory.dmp family_redline behavioral1/memory/1380-11-0x0000000003F00000-0x0000000003F22000-memory.dmp family_redline -
Executes dropped EXE 1 IoCs
Processes:
bestof.exepid process 1380 bestof.exe -
Loads dropped DLL 1 IoCs
Processes:
cb4255d73d0fd4ce9a13464ddae05d54.exepid process 300 cb4255d73d0fd4ce9a13464ddae05d54.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 9 ip-api.com 15 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:
cb4255d73d0fd4ce9a13464ddae05d54.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 cb4255d73d0fd4ce9a13464ddae05d54.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString cb4255d73d0fd4ce9a13464ddae05d54.exe -
Processes:
cb4255d73d0fd4ce9a13464ddae05d54.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13 cb4255d73d0fd4ce9a13464ddae05d54.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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 cb4255d73d0fd4ce9a13464ddae05d54.exe -
Runs ping.exe 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
bestof.exepid process 1380 bestof.exe 1380 bestof.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
bestof.exedescription pid process Token: SeDebugPrivilege 1380 bestof.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
cb4255d73d0fd4ce9a13464ddae05d54.exebestof.execmd.exedescription pid process target process PID 300 wrote to memory of 1380 300 cb4255d73d0fd4ce9a13464ddae05d54.exe bestof.exe PID 300 wrote to memory of 1380 300 cb4255d73d0fd4ce9a13464ddae05d54.exe bestof.exe PID 300 wrote to memory of 1380 300 cb4255d73d0fd4ce9a13464ddae05d54.exe bestof.exe PID 300 wrote to memory of 1380 300 cb4255d73d0fd4ce9a13464ddae05d54.exe bestof.exe PID 1380 wrote to memory of 1476 1380 bestof.exe cmd.exe PID 1380 wrote to memory of 1476 1380 bestof.exe cmd.exe PID 1380 wrote to memory of 1476 1380 bestof.exe cmd.exe PID 1380 wrote to memory of 1476 1380 bestof.exe cmd.exe PID 1476 wrote to memory of 1056 1476 cmd.exe PING.EXE PID 1476 wrote to memory of 1056 1476 cmd.exe PING.EXE PID 1476 wrote to memory of 1056 1476 cmd.exe PING.EXE PID 1476 wrote to memory of 1056 1476 cmd.exe PING.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\cb4255d73d0fd4ce9a13464ddae05d54.exe"C:\Users\Admin\AppData\Local\Temp\cb4255d73d0fd4ce9a13464ddae05d54.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/300-1-0x0000000003D50000-0x0000000003D61000-memory.dmpFilesize
68KB
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memory/1056-14-0x0000000000000000-mapping.dmp
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memory/1288-2-0x000007FEF7D40000-0x000007FEF7FBA000-memory.dmpFilesize
2.5MB
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memory/1380-7-0x0000000003C30000-0x0000000003C41000-memory.dmpFilesize
68KB
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memory/1380-6-0x00000000002C9000-0x00000000002CA000-memory.dmpFilesize
4KB
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memory/1380-8-0x0000000003F70000-0x0000000003F81000-memory.dmpFilesize
68KB
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memory/1380-9-0x0000000074520000-0x0000000074C0E000-memory.dmpFilesize
6.9MB
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memory/1380-10-0x0000000003E70000-0x0000000003E94000-memory.dmpFilesize
144KB
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memory/1380-11-0x0000000003F00000-0x0000000003F22000-memory.dmpFilesize
136KB
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memory/1380-4-0x0000000000000000-mapping.dmp
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memory/1476-12-0x0000000000000000-mapping.dmp