Malware Analysis Report

2024-10-16 03:24

Sample ID 210702-dkwt3m6rjs
Target zasawuheb.exe
SHA256 c94a81fdf688d220827320e88cc0b89af8690142abe5c602131b6659297c7d24
Tags
babuk ransomware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

c94a81fdf688d220827320e88cc0b89af8690142abe5c602131b6659297c7d24

Threat Level: Known bad

The file zasawuheb.exe was found to be: Known bad.

Malicious Activity Summary

babuk ransomware

Babuk Locker

Deletes shadow copies

Modifies extensions of user files

Enumerates connected drives

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Interacts with shadow copies

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-07-02 02:47

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-07-02 02:47

Reported

2021-07-02 02:50

Platform

win7v20210410

Max time kernel

123s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe"

Signatures

Babuk Locker

ransomware babuk

Deletes shadow copies

ransomware

Modifies extensions of user files

ransomware
Description Indicator Process Target
File opened for modification C:\Users\Admin\Pictures\ProtectNew.crw.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File renamed C:\Users\Admin\Pictures\StepCompare.png => C:\Users\Admin\Pictures\StepCompare.png.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\StepCompare.png.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File renamed C:\Users\Admin\Pictures\InitializeExport.raw => C:\Users\Admin\Pictures\InitializeExport.raw.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\InitializeExport.raw.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File renamed C:\Users\Admin\Pictures\ProtectNew.crw => C:\Users\Admin\Pictures\ProtectNew.crw.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A

Enumerates physical storage devices

Interacts with shadow copies

ransomware
Description Indicator Process Target
N/A N/A C:\Windows\system32\vssadmin.exe N/A
N/A N/A C:\Windows\system32\vssadmin.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1360 wrote to memory of 1248 N/A C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe C:\Windows\System32\cmd.exe
PID 1360 wrote to memory of 1248 N/A C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe C:\Windows\System32\cmd.exe
PID 1360 wrote to memory of 1248 N/A C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe C:\Windows\System32\cmd.exe
PID 1360 wrote to memory of 1248 N/A C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe C:\Windows\System32\cmd.exe
PID 1248 wrote to memory of 316 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1248 wrote to memory of 316 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1248 wrote to memory of 316 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 1360 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe C:\Windows\System32\cmd.exe
PID 1360 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe C:\Windows\System32\cmd.exe
PID 1360 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe C:\Windows\System32\cmd.exe
PID 1360 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe C:\Windows\System32\cmd.exe
PID 824 wrote to memory of 1584 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 824 wrote to memory of 1584 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe
PID 824 wrote to memory of 1584 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\vssadmin.exe

Processes

C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe

"C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet

C:\Windows\system32\vssadmin.exe

vssadmin.exe delete shadows /all /quiet

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet

C:\Windows\system32\vssadmin.exe

vssadmin.exe delete shadows /all /quiet

Network

N/A

Files

memory/1360-59-0x00000000752B1000-0x00000000752B3000-memory.dmp

memory/1248-60-0x0000000000000000-mapping.dmp

memory/316-61-0x0000000000000000-mapping.dmp

memory/1360-62-0x00000000002B0000-0x00000000002C5000-memory.dmp

memory/1360-63-0x0000000000400000-0x0000000000455000-memory.dmp

memory/824-64-0x0000000000000000-mapping.dmp

memory/1584-65-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2021-07-02 02:47

Reported

2021-07-02 02:50

Platform

win10v20210408

Max time kernel

16s

Max time network

65s

Command Line

"C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe"

Signatures

Babuk Locker

ransomware babuk

Deletes shadow copies

ransomware

Modifies extensions of user files

ransomware
Description Indicator Process Target
File opened for modification C:\Users\Admin\Pictures\WatchUninstall.tiff C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File renamed C:\Users\Admin\Pictures\GetSubmit.crw => C:\Users\Admin\Pictures\GetSubmit.crw.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File renamed C:\Users\Admin\Pictures\RegisterSplit.png => C:\Users\Admin\Pictures\RegisterSplit.png.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\RegisterSplit.png.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File renamed C:\Users\Admin\Pictures\AssertStop.raw => C:\Users\Admin\Pictures\AssertStop.raw.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\UseDebug.crw.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File renamed C:\Users\Admin\Pictures\OpenResume.png => C:\Users\Admin\Pictures\OpenResume.png.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\OpenResume.png.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\DisableEnable.tiff C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\EnterComplete.tiff C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\InstallCompress.png.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\OpenProtect.tiff C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File renamed C:\Users\Admin\Pictures\OpenProtect.tiff => C:\Users\Admin\Pictures\OpenProtect.tiff.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\WatchUninstall.tiff.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File renamed C:\Users\Admin\Pictures\EditSet.tiff => C:\Users\Admin\Pictures\EditSet.tiff.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File renamed C:\Users\Admin\Pictures\EnterComplete.tiff => C:\Users\Admin\Pictures\EnterComplete.tiff.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\EditSet.tiff.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File renamed C:\Users\Admin\Pictures\WatchUninstall.tiff => C:\Users\Admin\Pictures\WatchUninstall.tiff.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\AssertStop.raw.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\EditSet.tiff C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\GetSubmit.crw.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\OpenProtect.tiff.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File renamed C:\Users\Admin\Pictures\UseDebug.crw => C:\Users\Admin\Pictures\UseDebug.crw.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File renamed C:\Users\Admin\Pictures\DisableEnable.tiff => C:\Users\Admin\Pictures\DisableEnable.tiff.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File renamed C:\Users\Admin\Pictures\InstallCompress.png => C:\Users\Admin\Pictures\InstallCompress.png.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\DisableEnable.tiff.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened for modification C:\Users\Admin\Pictures\EnterComplete.tiff.babyk C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\Q: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\H: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\J: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\L: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\X: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\V: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\B: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\W: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\E: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\Y: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\U: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\I: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\A: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\O: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\P: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\S: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\K: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\R: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\T: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\G: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\N: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
File opened (read-only) \??\M: C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A

Enumerates physical storage devices

Interacts with shadow copies

ransomware
Description Indicator Process Target
N/A N/A C:\Windows\system32\vssadmin.exe N/A
N/A N/A C:\Windows\system32\vssadmin.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe

"C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet

C:\Windows\system32\vssadmin.exe

vssadmin.exe delete shadows /all /quiet

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet

C:\Windows\system32\vssadmin.exe

vssadmin.exe delete shadows /all /quiet

Network

N/A

Files

memory/528-115-0x0000000000400000-0x0000000000455000-memory.dmp

memory/528-114-0x0000000000510000-0x00000000005BE000-memory.dmp

memory/220-116-0x0000000000000000-mapping.dmp

memory/2060-117-0x0000000000000000-mapping.dmp

memory/2112-118-0x0000000000000000-mapping.dmp

memory/2780-119-0x0000000000000000-mapping.dmp