Analysis
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max time kernel
31s -
max time network
121s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
13-12-2020 07:35
Static task
static1
Behavioral task
behavioral1
Sample
c241a906e50c78a868140398932c5f47.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
c241a906e50c78a868140398932c5f47.exe
Resource
win10v20201028
General
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Target
c241a906e50c78a868140398932c5f47.exe
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Size
528KB
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MD5
c241a906e50c78a868140398932c5f47
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SHA1
16eae974827f9a84de6c82b99232cee06ced4b99
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SHA256
e1676964811c0a12d9a4ef474d150ea11c4141e608cce5aaedef7c019b6f555f
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SHA512
bb734fe4c4170d7815dfc209ed07a1aec618d065cd6d815e2a50a417a9ad5835e023f4e12954e932521c25ac4adfa61e7a408f7ebced89f10b5bb6504c2ae1bc
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/3432-10-0x0000000006640000-0x0000000006664000-memory.dmp family_redline behavioral2/memory/3432-12-0x0000000006850000-0x0000000006873000-memory.dmp family_redline -
Executes dropped EXE 1 IoCs
Processes:
bestof.exepid process 3432 bestof.exe -
Processes:
resource yara_rule C:\Users\Admin\AppData\Roaming\gferrfghvbc\bestof.exe upx C:\Users\Admin\AppData\Roaming\gferrfghvbc\bestof.exe upx -
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 13 ip-api.com 22 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:
c241a906e50c78a868140398932c5f47.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString c241a906e50c78a868140398932c5f47.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 c241a906e50c78a868140398932c5f47.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
bestof.exepid process 3432 bestof.exe 3432 bestof.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
bestof.exedescription pid process Token: SeDebugPrivilege 3432 bestof.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
c241a906e50c78a868140398932c5f47.exedescription pid process target process PID 508 wrote to memory of 3432 508 c241a906e50c78a868140398932c5f47.exe bestof.exe PID 508 wrote to memory of 3432 508 c241a906e50c78a868140398932c5f47.exe bestof.exe PID 508 wrote to memory of 3432 508 c241a906e50c78a868140398932c5f47.exe bestof.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c241a906e50c78a868140398932c5f47.exe"C:\Users\Admin\AppData\Local\Temp\c241a906e50c78a868140398932c5f47.exe"1⤵
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:508 -
C:\Users\Admin\AppData\Roaming\gferrfghvbc\bestof.exebestof.exe2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3432
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
6ff0a848f7054de66fb740182bde821a
SHA1f3f06eb53ef1feaa8975efc3ea5f2c4136574a4b
SHA2564270b29d2c1ac8eebb7f0c4eedce17264e7df2ffa353867666408a79fd5dfbc7
SHA5124c557d2f551be0940dbc4b18e6bbaf63016cb4dda9529e90d6a66b52f484a05a770743cb7f3eeac1d2b2162afe05ecd1913d151bab2ced407d77ceab0ffd2fff
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MD5
6ff0a848f7054de66fb740182bde821a
SHA1f3f06eb53ef1feaa8975efc3ea5f2c4136574a4b
SHA2564270b29d2c1ac8eebb7f0c4eedce17264e7df2ffa353867666408a79fd5dfbc7
SHA5124c557d2f551be0940dbc4b18e6bbaf63016cb4dda9529e90d6a66b52f484a05a770743cb7f3eeac1d2b2162afe05ecd1913d151bab2ced407d77ceab0ffd2fff