Analysis
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max time kernel
161s -
max time network
171s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220113 -
submitted
03-02-2022 13:09
Static task
static1
Behavioral task
behavioral1
Sample
fMwgrR8e.exe
Resource
win7-en-20211208
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
fMwgrR8e.exe
Resource
win10v2004-en-20220113
windows10-2004_x64
0 signatures
0 seconds
General
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Target
fMwgrR8e.exe
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Size
79KB
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MD5
92832ae49373b56748817cb5398ed706
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SHA1
61e4505d605882b809d9c7f3dcbf163ff1678382
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SHA256
1e24560100d010c27cc19c59f9fe1531e4286ecb21fe53763165f30c5f58dc90
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SHA512
398ef0e5ffb6f914a2d1df23f12561153ef52ea28d345232cbb2daa84c43d1f1934be0c40d00b2502c2437c2733d0cdf75d24be6a8b47fc69648ad16c0bb4858
Score
10/10
Malware Config
Signatures
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Babuk Locker
RaaS first seen in 2021 initially called Vasa Locker.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies extensions of user files 19 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
fMwgrR8e.exedescription ioc Process File opened for modification C:\Users\Admin\Pictures\DismountWait.tiff fMwgrR8e.exe File renamed C:\Users\Admin\Pictures\DismountWait.tiff => C:\Users\Admin\Pictures\DismountWait.tiff.babyk fMwgrR8e.exe File renamed C:\Users\Admin\Pictures\OptimizeReceive.tiff => C:\Users\Admin\Pictures\OptimizeReceive.tiff.babyk fMwgrR8e.exe File opened for modification C:\Users\Admin\Pictures\UnpublishUndo.png.babyk fMwgrR8e.exe File opened for modification C:\Users\Admin\Pictures\DismountWait.tiff.babyk fMwgrR8e.exe File renamed C:\Users\Admin\Pictures\ExpandTrace.crw => C:\Users\Admin\Pictures\ExpandTrace.crw.babyk fMwgrR8e.exe File renamed C:\Users\Admin\Pictures\UnpublishUndo.png => C:\Users\Admin\Pictures\UnpublishUndo.png.babyk fMwgrR8e.exe File renamed C:\Users\Admin\Pictures\UnpublishWatch.tiff => C:\Users\Admin\Pictures\UnpublishWatch.tiff.babyk fMwgrR8e.exe File opened for modification C:\Users\Admin\Pictures\OptimizeReceive.tiff.babyk fMwgrR8e.exe File renamed C:\Users\Admin\Pictures\StartRemove.raw => C:\Users\Admin\Pictures\StartRemove.raw.babyk fMwgrR8e.exe File opened for modification C:\Users\Admin\Pictures\StartRemove.raw.babyk fMwgrR8e.exe File opened for modification C:\Users\Admin\Pictures\UnpublishWatch.tiff fMwgrR8e.exe File renamed C:\Users\Admin\Pictures\BlockUse.crw => C:\Users\Admin\Pictures\BlockUse.crw.babyk fMwgrR8e.exe File opened for modification C:\Users\Admin\Pictures\BlockUse.crw.babyk fMwgrR8e.exe File opened for modification C:\Users\Admin\Pictures\ExpandTrace.crw.babyk fMwgrR8e.exe File opened for modification C:\Users\Admin\Pictures\OptimizeReceive.tiff fMwgrR8e.exe File opened for modification C:\Users\Admin\Pictures\UnpublishWatch.tiff.babyk fMwgrR8e.exe File renamed C:\Users\Admin\Pictures\RenameMove.raw => C:\Users\Admin\Pictures\RenameMove.raw.babyk fMwgrR8e.exe File opened for modification C:\Users\Admin\Pictures\RenameMove.raw.babyk fMwgrR8e.exe -
Sets service image path in registry 2 TTPs
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
fMwgrR8e.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation fMwgrR8e.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
fMwgrR8e.exedescription ioc Process File opened (read-only) \??\E: fMwgrR8e.exe File opened (read-only) \??\R: fMwgrR8e.exe File opened (read-only) \??\F: fMwgrR8e.exe File opened (read-only) \??\J: fMwgrR8e.exe File opened (read-only) \??\V: fMwgrR8e.exe File opened (read-only) \??\M: fMwgrR8e.exe File opened (read-only) \??\W: fMwgrR8e.exe File opened (read-only) \??\Y: fMwgrR8e.exe File opened (read-only) \??\O: fMwgrR8e.exe File opened (read-only) \??\X: fMwgrR8e.exe File opened (read-only) \??\N: fMwgrR8e.exe File opened (read-only) \??\Q: fMwgrR8e.exe File opened (read-only) \??\U: fMwgrR8e.exe File opened (read-only) \??\I: fMwgrR8e.exe File opened (read-only) \??\P: fMwgrR8e.exe File opened (read-only) \??\A: fMwgrR8e.exe File opened (read-only) \??\G: fMwgrR8e.exe File opened (read-only) \??\H: fMwgrR8e.exe File opened (read-only) \??\Z: fMwgrR8e.exe File opened (read-only) \??\T: fMwgrR8e.exe File opened (read-only) \??\K: fMwgrR8e.exe File opened (read-only) \??\L: fMwgrR8e.exe File opened (read-only) \??\B: fMwgrR8e.exe File opened (read-only) \??\S: fMwgrR8e.exe -
Drops file in Windows directory 6 IoCs
Processes:
svchost.exedescription ioc Process 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 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\WindowsUpdate.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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Interacts with shadow copies 2 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exevssadmin.exepid Process 2608 vssadmin.exe 3492 vssadmin.exe -
Modifies data under HKEY_USERS 41 IoCs
Processes:
WaaSMedicAgent.exedescription ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs WaaSMedicAgent.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs WaaSMedicAgent.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
fMwgrR8e.exepid Process 2784 fMwgrR8e.exe 2784 fMwgrR8e.exe -
Suspicious use of AdjustPrivilegeToken 9 IoCs
Processes:
vssvc.exesvchost.exedescription pid Process Token: SeBackupPrivilege 4408 vssvc.exe Token: SeRestorePrivilege 4408 vssvc.exe Token: SeAuditPrivilege 4408 vssvc.exe Token: SeShutdownPrivilege 3444 svchost.exe Token: SeCreatePagefilePrivilege 3444 svchost.exe Token: SeShutdownPrivilege 3444 svchost.exe Token: SeCreatePagefilePrivilege 3444 svchost.exe Token: SeShutdownPrivilege 3444 svchost.exe Token: SeCreatePagefilePrivilege 3444 svchost.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
fMwgrR8e.execmd.execmd.exedescription pid Process procid_target PID 2784 wrote to memory of 4384 2784 fMwgrR8e.exe 82 PID 2784 wrote to memory of 4384 2784 fMwgrR8e.exe 82 PID 4384 wrote to memory of 3492 4384 cmd.exe 84 PID 4384 wrote to memory of 3492 4384 cmd.exe 84 PID 2784 wrote to memory of 4040 2784 fMwgrR8e.exe 92 PID 2784 wrote to memory of 4040 2784 fMwgrR8e.exe 92 PID 4040 wrote to memory of 2608 4040 cmd.exe 94 PID 4040 wrote to memory of 2608 4040 cmd.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\fMwgrR8e.exe"C:\Users\Admin\AppData\Local\Temp\fMwgrR8e.exe"1⤵
- Modifies extensions of user files
- Checks computer location settings
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2784 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:4384 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:3492
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:4040 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:2608
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4408
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C:\Windows\System32\WaaSMedicAgent.exeC:\Windows\System32\WaaSMedicAgent.exe 80ce0bc29adae12de7c90e0cf9ec6548 EGQR6Syxi0KgZMfZdP4NaQ.0.1.0.0.01⤵
- Modifies data under HKEY_USERS
PID:3060
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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:3444