Analysis
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max time kernel
184s -
max time network
192s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220113 -
submitted
08/02/2022, 18:57
Static task
static1
Behavioral task
behavioral1
Sample
16fb0404e48b8177e15c872b7da4fbef3253012a744de73bc7d8c54a843c5001.exe
Resource
win7-en-20211208
General
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Target
16fb0404e48b8177e15c872b7da4fbef3253012a744de73bc7d8c54a843c5001.exe
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Size
666KB
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MD5
ec820293dd50d7cc377bbc3f86fdd9c4
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SHA1
4ef754aec7e36c38c5b5d9730a097b76438bae53
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SHA256
16fb0404e48b8177e15c872b7da4fbef3253012a744de73bc7d8c54a843c5001
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SHA512
b5c3d7a0358ddc70250c37b717e0ef428a62880597118461aa6a7ffa0ef6d992798f3bd0862ccbd13e0dab3f88a87a2fb2f0388334e6a306af3f7d346247f2a6
Malware Config
Extracted
cryptbot
leribis04.top
moraffdd04.top
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payload_url
http://fsdvddrttload01.top/download.php?file=lm.exe
Signatures
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CryptBot Payload 2 IoCs
resource yara_rule behavioral2/memory/1760-131-0x0000000000D80000-0x0000000000E20000-memory.dmp family_cryptbot behavioral2/memory/1760-132-0x0000000000400000-0x00000000004A4000-memory.dmp family_cryptbot -
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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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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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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Drops file in Windows directory 7 IoCs
description ioc Process File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.edb svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm svchost.exe File opened for modification C:\Windows\SoftwareDistribution\ReportingEvents.log svchost.exe File opened for modification C:\Windows\Logs\CBS\CBS.log TiWorker.exe File opened for modification C:\Windows\WindowsUpdate.log svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk svchost.exe File opened for modification C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log svchost.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.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 16fb0404e48b8177e15c872b7da4fbef3253012a744de73bc7d8c54a843c5001.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 16fb0404e48b8177e15c872b7da4fbef3253012a744de73bc7d8c54a843c5001.exe -
Suspicious use of AdjustPrivilegeToken 9 IoCs
description pid Process Token: SeShutdownPrivilege 700 svchost.exe Token: SeCreatePagefilePrivilege 700 svchost.exe Token: SeShutdownPrivilege 700 svchost.exe Token: SeCreatePagefilePrivilege 700 svchost.exe Token: SeShutdownPrivilege 700 svchost.exe Token: SeCreatePagefilePrivilege 700 svchost.exe Token: SeSecurityPrivilege 2508 TiWorker.exe Token: SeRestorePrivilege 2508 TiWorker.exe Token: SeBackupPrivilege 2508 TiWorker.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 1760 16fb0404e48b8177e15c872b7da4fbef3253012a744de73bc7d8c54a843c5001.exe 1760 16fb0404e48b8177e15c872b7da4fbef3253012a744de73bc7d8c54a843c5001.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\16fb0404e48b8177e15c872b7da4fbef3253012a744de73bc7d8c54a843c5001.exe"C:\Users\Admin\AppData\Local\Temp\16fb0404e48b8177e15c872b7da4fbef3253012a744de73bc7d8c54a843c5001.exe"1⤵
- Checks processor information in registry
- Suspicious use of FindShellTrayWindow
PID:1760
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:700
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C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exeC:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:2508