Analysis
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max time kernel
60s -
max time network
59s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
30-10-2020 19:35
Static task
static1
Behavioral task
behavioral1
Sample
76448bb2fbeda3e0e7c2befbb66ca778.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
76448bb2fbeda3e0e7c2befbb66ca778.exe
Resource
win10v20201028
General
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Target
76448bb2fbeda3e0e7c2befbb66ca778.exe
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Size
582KB
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MD5
76448bb2fbeda3e0e7c2befbb66ca778
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SHA1
9a8c6d78d5f67e2e79c198ece6da39f7fd898773
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SHA256
40e054c5c315d144c46e4caab2eb10d61f71c8f3cb97a85e81b96ce6a306463d
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SHA512
c8e1747f5c8a4979372b1cab52b0c0d09c98bba2cbacf24fac9ca0d6a419e64100169e03cb0c8e865ad72018910e624a69cee3b77f5e30bd8761a1c09fbca41e
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 4 IoCs
Processes:
resource yara_rule behavioral1/memory/1552-12-0x0000000000400000-0x0000000000426000-memory.dmp family_redline behavioral1/memory/1552-13-0x000000000042064E-mapping.dmp family_redline behavioral1/memory/1552-16-0x0000000000400000-0x0000000000426000-memory.dmp family_redline behavioral1/memory/1552-15-0x0000000000400000-0x0000000000426000-memory.dmp family_redline -
Executes dropped EXE 2 IoCs
Processes:
bestof.exebestof.exepid process 752 bestof.exe 1552 bestof.exe -
Loads dropped DLL 1 IoCs
Processes:
76448bb2fbeda3e0e7c2befbb66ca778.exepid process 288 76448bb2fbeda3e0e7c2befbb66ca778.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 14 checkip.amazonaws.com -
Suspicious use of SetThreadContext 1 IoCs
Processes:
bestof.exedescription pid process target process PID 752 set thread context of 1552 752 bestof.exe bestof.exe -
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:
76448bb2fbeda3e0e7c2befbb66ca778.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 76448bb2fbeda3e0e7c2befbb66ca778.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 76448bb2fbeda3e0e7c2befbb66ca778.exe -
Processes:
76448bb2fbeda3e0e7c2befbb66ca778.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13 76448bb2fbeda3e0e7c2befbb66ca778.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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 76448bb2fbeda3e0e7c2befbb66ca778.exe -
Runs ping.exe 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
bestof.exepid process 1552 bestof.exe 1552 bestof.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
bestof.exebestof.exedescription pid process Token: SeDebugPrivilege 752 bestof.exe Token: SeDebugPrivilege 1552 bestof.exe -
Suspicious use of WriteProcessMemory 21 IoCs
Processes:
76448bb2fbeda3e0e7c2befbb66ca778.exebestof.exebestof.execmd.exedescription pid process target process PID 288 wrote to memory of 752 288 76448bb2fbeda3e0e7c2befbb66ca778.exe bestof.exe PID 288 wrote to memory of 752 288 76448bb2fbeda3e0e7c2befbb66ca778.exe bestof.exe PID 288 wrote to memory of 752 288 76448bb2fbeda3e0e7c2befbb66ca778.exe bestof.exe PID 288 wrote to memory of 752 288 76448bb2fbeda3e0e7c2befbb66ca778.exe bestof.exe PID 752 wrote to memory of 1552 752 bestof.exe bestof.exe PID 752 wrote to memory of 1552 752 bestof.exe bestof.exe PID 752 wrote to memory of 1552 752 bestof.exe bestof.exe PID 752 wrote to memory of 1552 752 bestof.exe bestof.exe PID 752 wrote to memory of 1552 752 bestof.exe bestof.exe PID 752 wrote to memory of 1552 752 bestof.exe bestof.exe PID 752 wrote to memory of 1552 752 bestof.exe bestof.exe PID 752 wrote to memory of 1552 752 bestof.exe bestof.exe PID 752 wrote to memory of 1552 752 bestof.exe bestof.exe PID 1552 wrote to memory of 1600 1552 bestof.exe cmd.exe PID 1552 wrote to memory of 1600 1552 bestof.exe cmd.exe PID 1552 wrote to memory of 1600 1552 bestof.exe cmd.exe PID 1552 wrote to memory of 1600 1552 bestof.exe cmd.exe PID 1600 wrote to memory of 1452 1600 cmd.exe PING.EXE PID 1600 wrote to memory of 1452 1600 cmd.exe PING.EXE PID 1600 wrote to memory of 1452 1600 cmd.exe PING.EXE PID 1600 wrote to memory of 1452 1600 cmd.exe PING.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\76448bb2fbeda3e0e7c2befbb66ca778.exe"C:\Users\Admin\AppData\Local\Temp\76448bb2fbeda3e0e7c2befbb66ca778.exe"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious use of WriteProcessMemory
PID:288 -
C:\Users\Admin\AppData\Roaming\gfersesurity\bestof.exebestof.exe2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:752 -
C:\Users\Admin\AppData\Roaming\gfersesurity\bestof.exe"C:\Users\Admin\AppData\Roaming\gfersesurity\bestof.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1552 -
C:\Windows\SysWOW64\cmd.exe"cmd.exe" /C ping 127.0.0.1 -n 3 > nul & del "C:\Users\Admin\AppData\Roaming\gfersesurity\bestof.exe"4⤵
- Suspicious use of WriteProcessMemory
PID:1600 -
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 35⤵
- Runs ping.exe
PID:1452
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
ae71797ed71a11f172c9d03701ae88c7
SHA110a0cc04fbed99c4f0f1f908979455da6868f1eb
SHA2560215f9dd19951e07aaa5ddfed10c4b46af716a8e3ce1ccb853f0992d14ee3e34
SHA5127f6fa1d06268a9b1a3541f19f1a2636be3579d6bcb8eb6f54f53bfdd380f1a7150e32a61799aefec5b52b920e8b39213d5dacf8e24654559b1022f6fd51a5d77
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MD5
ae71797ed71a11f172c9d03701ae88c7
SHA110a0cc04fbed99c4f0f1f908979455da6868f1eb
SHA2560215f9dd19951e07aaa5ddfed10c4b46af716a8e3ce1ccb853f0992d14ee3e34
SHA5127f6fa1d06268a9b1a3541f19f1a2636be3579d6bcb8eb6f54f53bfdd380f1a7150e32a61799aefec5b52b920e8b39213d5dacf8e24654559b1022f6fd51a5d77
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MD5
ae71797ed71a11f172c9d03701ae88c7
SHA110a0cc04fbed99c4f0f1f908979455da6868f1eb
SHA2560215f9dd19951e07aaa5ddfed10c4b46af716a8e3ce1ccb853f0992d14ee3e34
SHA5127f6fa1d06268a9b1a3541f19f1a2636be3579d6bcb8eb6f54f53bfdd380f1a7150e32a61799aefec5b52b920e8b39213d5dacf8e24654559b1022f6fd51a5d77
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MD5
ae71797ed71a11f172c9d03701ae88c7
SHA110a0cc04fbed99c4f0f1f908979455da6868f1eb
SHA2560215f9dd19951e07aaa5ddfed10c4b46af716a8e3ce1ccb853f0992d14ee3e34
SHA5127f6fa1d06268a9b1a3541f19f1a2636be3579d6bcb8eb6f54f53bfdd380f1a7150e32a61799aefec5b52b920e8b39213d5dacf8e24654559b1022f6fd51a5d77