Analysis
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max time kernel
143s -
max time network
149s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
28-12-2020 07:51
Static task
static1
Behavioral task
behavioral1
Sample
33d0ce7494b4023ca5536ba4213723b6.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
33d0ce7494b4023ca5536ba4213723b6.exe
Resource
win10v20201028
General
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Target
33d0ce7494b4023ca5536ba4213723b6.exe
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Size
595KB
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MD5
33d0ce7494b4023ca5536ba4213723b6
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SHA1
ecf40633aa434da5ed2dba8beed2360d101829c7
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SHA256
e7341f8b61b10ce99efcf7dda7fa6b47dfa9c397c9b2c9f4b1bf09ddcabbfe73
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SHA512
87528f245b192fd3f1f8486f79e21da74fc2957809c489ae2ceb440a66e7b13edb465078382442d553f117d28cf37e638d8b96711e4d1eb5c859cf60220e983f
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 behavioral2/memory/3248-11-0x0000000006D50000-0x0000000006D74000-memory.dmp family_redline behavioral2/memory/3248-13-0x0000000006EB0000-0x0000000006ED2000-memory.dmp family_redline -
Executes dropped EXE 1 IoCs
Processes:
bestof.exepid process 3248 bestof.exe -
Processes:
resource yara_rule C:\Users\Admin\AppData\Roaming\leadentop\bestof.exe upx C:\Users\Admin\AppData\Roaming\leadentop\bestof.exe upx -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
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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 15 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:
33d0ce7494b4023ca5536ba4213723b6.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 33d0ce7494b4023ca5536ba4213723b6.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 33d0ce7494b4023ca5536ba4213723b6.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
bestof.exedescription pid process Token: SeDebugPrivilege 3248 bestof.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
33d0ce7494b4023ca5536ba4213723b6.exedescription pid process target process PID 4760 wrote to memory of 3248 4760 33d0ce7494b4023ca5536ba4213723b6.exe bestof.exe PID 4760 wrote to memory of 3248 4760 33d0ce7494b4023ca5536ba4213723b6.exe bestof.exe PID 4760 wrote to memory of 3248 4760 33d0ce7494b4023ca5536ba4213723b6.exe bestof.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\33d0ce7494b4023ca5536ba4213723b6.exe"C:\Users\Admin\AppData\Local\Temp\33d0ce7494b4023ca5536ba4213723b6.exe"1⤵
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:4760 -
C:\Users\Admin\AppData\Roaming\leadentop\bestof.exebestof.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3248
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
ce62304c3eff639e1b2352667a569b8a
SHA15a5cb774b59befe102fe04e93d9853cfbda3334b
SHA256e8356fad49709d2563d2707dbb09f4f1019e30a0ff5836047a11b3d1d84f4d62
SHA51299d77537f2fade1ca2255c16fcd5d64618f0364f15cddb1b6a48814c9a7e59ccdac72db7f0a1cf4b0eac63180264fd58989e43839373d085ecb42ad2b9fe6f41
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MD5
ce62304c3eff639e1b2352667a569b8a
SHA15a5cb774b59befe102fe04e93d9853cfbda3334b
SHA256e8356fad49709d2563d2707dbb09f4f1019e30a0ff5836047a11b3d1d84f4d62
SHA51299d77537f2fade1ca2255c16fcd5d64618f0364f15cddb1b6a48814c9a7e59ccdac72db7f0a1cf4b0eac63180264fd58989e43839373d085ecb42ad2b9fe6f41