Analysis
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max time kernel
28s -
max time network
29s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
01-11-2020 07:24
Static task
static1
Behavioral task
behavioral1
Sample
aef69fb757dba463a759afb95ef12ce5.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
aef69fb757dba463a759afb95ef12ce5.exe
Resource
win10v20201028
General
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Target
aef69fb757dba463a759afb95ef12ce5.exe
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Size
777KB
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MD5
aef69fb757dba463a759afb95ef12ce5
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SHA1
2d0c0e966d28cecc2b60eae9ea8eeb194153c923
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SHA256
676f868c46ee3dd5106b23d5c5a8dc882348bbdc342519fb756fd28418b4a9e2
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SHA512
27fe86cc65c1d40e7a4260432006d9016453ee60408c3cb949bf2ca89356fdf2417e75f1f2aa794f677591ec242b617c15fc83ae0814827f7f407457718c96d8
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/268-10-0x00000000023C0000-0x00000000023E4000-memory.dmp family_redline behavioral1/memory/268-16-0x0000000002590000-0x00000000025B2000-memory.dmp family_redline -
Executes dropped EXE 1 IoCs
Processes:
bestof.exepid process 268 bestof.exe -
Loads dropped DLL 1 IoCs
Processes:
aef69fb757dba463a759afb95ef12ce5.exepid process 1744 aef69fb757dba463a759afb95ef12ce5.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 14 checkip.amazonaws.com 8 ip-api.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:
aef69fb757dba463a759afb95ef12ce5.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 aef69fb757dba463a759afb95ef12ce5.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString aef69fb757dba463a759afb95ef12ce5.exe -
Processes:
aef69fb757dba463a759afb95ef12ce5.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13 aef69fb757dba463a759afb95ef12ce5.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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 aef69fb757dba463a759afb95ef12ce5.exe -
Runs ping.exe 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
bestof.exepid process 268 bestof.exe 268 bestof.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
bestof.exedescription pid process Token: SeDebugPrivilege 268 bestof.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
aef69fb757dba463a759afb95ef12ce5.exebestof.execmd.exedescription pid process target process PID 1744 wrote to memory of 268 1744 aef69fb757dba463a759afb95ef12ce5.exe bestof.exe PID 1744 wrote to memory of 268 1744 aef69fb757dba463a759afb95ef12ce5.exe bestof.exe PID 1744 wrote to memory of 268 1744 aef69fb757dba463a759afb95ef12ce5.exe bestof.exe PID 1744 wrote to memory of 268 1744 aef69fb757dba463a759afb95ef12ce5.exe bestof.exe PID 268 wrote to memory of 1620 268 bestof.exe cmd.exe PID 268 wrote to memory of 1620 268 bestof.exe cmd.exe PID 268 wrote to memory of 1620 268 bestof.exe cmd.exe PID 268 wrote to memory of 1620 268 bestof.exe cmd.exe PID 1620 wrote to memory of 1748 1620 cmd.exe PING.EXE PID 1620 wrote to memory of 1748 1620 cmd.exe PING.EXE PID 1620 wrote to memory of 1748 1620 cmd.exe PING.EXE PID 1620 wrote to memory of 1748 1620 cmd.exe PING.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\aef69fb757dba463a759afb95ef12ce5.exe"C:\Users\Admin\AppData\Local\Temp\aef69fb757dba463a759afb95ef12ce5.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious use of WriteProcessMemory
PID:1744 -
C:\Users\Admin\AppData\Roaming\gfersesurity\bestof.exebestof.exe2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:268 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C ping 127.0.0.1 -n 3 > nul & del ""3⤵
- Suspicious use of WriteProcessMemory
PID:1620 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 34⤵
- Runs ping.exe
PID:1748
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
6943b3380427465a7998ddf3a96945a0
SHA1abb680ef5e005da1610828d518c15a250b001fd9
SHA25694e489927f1f04b50d80382b4ebbb245d8b0cd55f36dac8d7de3c543cbf361fb
SHA5125c8fb35986df56b3f6f7b850a98455ab3d767372b57838d54c9faf280826975a0f2a0828fa977469a3d5e02ce9f7bea23e8b574cf793f4264f385e871de8277d
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MD5
6943b3380427465a7998ddf3a96945a0
SHA1abb680ef5e005da1610828d518c15a250b001fd9
SHA25694e489927f1f04b50d80382b4ebbb245d8b0cd55f36dac8d7de3c543cbf361fb
SHA5125c8fb35986df56b3f6f7b850a98455ab3d767372b57838d54c9faf280826975a0f2a0828fa977469a3d5e02ce9f7bea23e8b574cf793f4264f385e871de8277d