Resubmissions
23/05/2023, 08:29
230523-kdl4csfd51 1022/05/2023, 02:20
230522-csp5kade76 1022/05/2023, 01:46
230522-b6968agc4z 10Analysis
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max time kernel
368s -
max time network
334s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
22/05/2023, 02:20
Static task
static1
Behavioral task
behavioral1
Sample
3a2b0d7aa2a94d6d537838a2a18fa25890c2df97c7708e895f7c566f7a65ab76.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
3a2b0d7aa2a94d6d537838a2a18fa25890c2df97c7708e895f7c566f7a65ab76.exe
Resource
win10v2004-20230220-en
General
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Target
3a2b0d7aa2a94d6d537838a2a18fa25890c2df97c7708e895f7c566f7a65ab76.exe
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Size
1.1MB
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MD5
d6cf5f8289eac27c551334578e6e4d9f
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SHA1
25f581c79b08f85ffe729bfec35fdc1ba6ef0add
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SHA256
3a2b0d7aa2a94d6d537838a2a18fa25890c2df97c7708e895f7c566f7a65ab76
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SHA512
258c276fe07b76e1dd1fea7ad1edef73fe95942ed912b91ef1bae70a8a600f5cdce28ced0d4e124f29068ec51adc2c92dad8455481ce9f55b138e3a8d96d13f9
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SSDEEP
24576:CDmzI+4jJk5xYsx+1itfzYpjJU1P2UjStlezy:COIfaxLx+EEC2UVz
Malware Config
Extracted
C:\Users\Admin\Downloads\readme.txt
Signatures
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 1988 bcdedit.exe 1488 bcdedit.exe -
Renames multiple (197) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 1372 wbadmin.exe -
Modifies extensions of user files 2 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\SplitTest.png => C:\Users\Admin\Pictures\SplitTest.png.Alphaware svchost.exe File renamed C:\Users\Admin\Pictures\UninstallPing.tif => C:\Users\Admin\Pictures\UninstallPing.tif.Alphaware svchost.exe -
Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\readme.txt svchost.exe -
Executes dropped EXE 2 IoCs
pid Process 1648 svchost.exe 1308 svchost.exe -
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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Drops desktop.ini file(s) 33 IoCs
description ioc Process File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\s14i9c8xt.jpg" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 968 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1840 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1648 svchost.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 744 3a2b0d7aa2a94d6d537838a2a18fa25890c2df97c7708e895f7c566f7a65ab76.exe 1648 svchost.exe 1648 svchost.exe 1308 svchost.exe -
Suspicious use of AdjustPrivilegeToken 53 IoCs
description pid Process Token: SeDebugPrivilege 744 3a2b0d7aa2a94d6d537838a2a18fa25890c2df97c7708e895f7c566f7a65ab76.exe Token: SeDebugPrivilege 1648 svchost.exe Token: SeBackupPrivilege 428 vssvc.exe Token: SeRestorePrivilege 428 vssvc.exe Token: SeAuditPrivilege 428 vssvc.exe Token: SeIncreaseQuotaPrivilege 544 WMIC.exe Token: SeSecurityPrivilege 544 WMIC.exe Token: SeTakeOwnershipPrivilege 544 WMIC.exe Token: SeLoadDriverPrivilege 544 WMIC.exe Token: SeSystemProfilePrivilege 544 WMIC.exe Token: SeSystemtimePrivilege 544 WMIC.exe Token: SeProfSingleProcessPrivilege 544 WMIC.exe Token: SeIncBasePriorityPrivilege 544 WMIC.exe Token: SeCreatePagefilePrivilege 544 WMIC.exe Token: SeBackupPrivilege 544 WMIC.exe Token: SeRestorePrivilege 544 WMIC.exe Token: SeShutdownPrivilege 544 WMIC.exe Token: SeDebugPrivilege 544 WMIC.exe Token: SeSystemEnvironmentPrivilege 544 WMIC.exe Token: SeRemoteShutdownPrivilege 544 WMIC.exe Token: SeUndockPrivilege 544 WMIC.exe Token: SeManageVolumePrivilege 544 WMIC.exe Token: 33 544 WMIC.exe Token: 34 544 WMIC.exe Token: 35 544 WMIC.exe Token: SeIncreaseQuotaPrivilege 544 WMIC.exe Token: SeSecurityPrivilege 544 WMIC.exe Token: SeTakeOwnershipPrivilege 544 WMIC.exe Token: SeLoadDriverPrivilege 544 WMIC.exe Token: SeSystemProfilePrivilege 544 WMIC.exe Token: SeSystemtimePrivilege 544 WMIC.exe Token: SeProfSingleProcessPrivilege 544 WMIC.exe Token: SeIncBasePriorityPrivilege 544 WMIC.exe Token: SeCreatePagefilePrivilege 544 WMIC.exe Token: SeBackupPrivilege 544 WMIC.exe Token: SeRestorePrivilege 544 WMIC.exe Token: SeShutdownPrivilege 544 WMIC.exe Token: SeDebugPrivilege 544 WMIC.exe Token: SeSystemEnvironmentPrivilege 544 WMIC.exe Token: SeRemoteShutdownPrivilege 544 WMIC.exe Token: SeUndockPrivilege 544 WMIC.exe Token: SeManageVolumePrivilege 544 WMIC.exe Token: 33 544 WMIC.exe Token: 34 544 WMIC.exe Token: 35 544 WMIC.exe Token: SeBackupPrivilege 800 wbengine.exe Token: SeRestorePrivilege 800 wbengine.exe Token: SeSecurityPrivilege 800 wbengine.exe Token: 33 564 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 564 AUDIODG.EXE Token: 33 564 AUDIODG.EXE Token: SeIncBasePriorityPrivilege 564 AUDIODG.EXE Token: SeDebugPrivilege 1308 svchost.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1840 NOTEPAD.EXE -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 744 wrote to memory of 1648 744 3a2b0d7aa2a94d6d537838a2a18fa25890c2df97c7708e895f7c566f7a65ab76.exe 28 PID 744 wrote to memory of 1648 744 3a2b0d7aa2a94d6d537838a2a18fa25890c2df97c7708e895f7c566f7a65ab76.exe 28 PID 744 wrote to memory of 1648 744 3a2b0d7aa2a94d6d537838a2a18fa25890c2df97c7708e895f7c566f7a65ab76.exe 28 PID 1648 wrote to memory of 1936 1648 svchost.exe 30 PID 1648 wrote to memory of 1936 1648 svchost.exe 30 PID 1648 wrote to memory of 1936 1648 svchost.exe 30 PID 1936 wrote to memory of 968 1936 cmd.exe 32 PID 1936 wrote to memory of 968 1936 cmd.exe 32 PID 1936 wrote to memory of 968 1936 cmd.exe 32 PID 1936 wrote to memory of 544 1936 cmd.exe 36 PID 1936 wrote to memory of 544 1936 cmd.exe 36 PID 1936 wrote to memory of 544 1936 cmd.exe 36 PID 1648 wrote to memory of 1000 1648 svchost.exe 38 PID 1648 wrote to memory of 1000 1648 svchost.exe 38 PID 1648 wrote to memory of 1000 1648 svchost.exe 38 PID 1000 wrote to memory of 1988 1000 cmd.exe 40 PID 1000 wrote to memory of 1988 1000 cmd.exe 40 PID 1000 wrote to memory of 1988 1000 cmd.exe 40 PID 1000 wrote to memory of 1488 1000 cmd.exe 41 PID 1000 wrote to memory of 1488 1000 cmd.exe 41 PID 1000 wrote to memory of 1488 1000 cmd.exe 41 PID 1648 wrote to memory of 1196 1648 svchost.exe 42 PID 1648 wrote to memory of 1196 1648 svchost.exe 42 PID 1648 wrote to memory of 1196 1648 svchost.exe 42 PID 1196 wrote to memory of 1372 1196 cmd.exe 44 PID 1196 wrote to memory of 1372 1196 cmd.exe 44 PID 1196 wrote to memory of 1372 1196 cmd.exe 44 PID 1648 wrote to memory of 1840 1648 svchost.exe 48 PID 1648 wrote to memory of 1840 1648 svchost.exe 48 PID 1648 wrote to memory of 1840 1648 svchost.exe 48 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\3a2b0d7aa2a94d6d537838a2a18fa25890c2df97c7708e895f7c566f7a65ab76.exe"C:\Users\Admin\AppData\Local\Temp\3a2b0d7aa2a94d6d537838a2a18fa25890c2df97c7708e895f7c566f7a65ab76.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:744 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Modifies extensions of user files
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1648 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1936 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:968
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:544
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no3⤵
- Suspicious use of WriteProcessMemory
PID:1000 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1988
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1488
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1196 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1372
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\readme.txt3⤵
- Opens file in notepad (likely ransom note)
- Suspicious use of FindShellTrayWindow
PID:1840
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:428
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:800
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1668
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1404
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x3041⤵
- Suspicious use of AdjustPrivilegeToken
PID:564
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C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1308
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
1KB
MD5ec607b3314664a69da75c6c3578480d5
SHA171051888da2de56b1014c900fec172c5a4f80ee0
SHA2561f07fbece71d67c140a10aa9993f1d5bba5250f21b7cfafcc39e4ea60689223c
SHA512343075967c4dec8acf245a606b9c8af151f64928a28ca50a525743d5daccf7b6b51b61da56506962a94afb9f6e22bed8ed48aefe7bcc484b8b4f6b86655e0d58
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Filesize
1.1MB
MD5d6cf5f8289eac27c551334578e6e4d9f
SHA125f581c79b08f85ffe729bfec35fdc1ba6ef0add
SHA2563a2b0d7aa2a94d6d537838a2a18fa25890c2df97c7708e895f7c566f7a65ab76
SHA512258c276fe07b76e1dd1fea7ad1edef73fe95942ed912b91ef1bae70a8a600f5cdce28ced0d4e124f29068ec51adc2c92dad8455481ce9f55b138e3a8d96d13f9
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Filesize
1.1MB
MD5d6cf5f8289eac27c551334578e6e4d9f
SHA125f581c79b08f85ffe729bfec35fdc1ba6ef0add
SHA2563a2b0d7aa2a94d6d537838a2a18fa25890c2df97c7708e895f7c566f7a65ab76
SHA512258c276fe07b76e1dd1fea7ad1edef73fe95942ed912b91ef1bae70a8a600f5cdce28ced0d4e124f29068ec51adc2c92dad8455481ce9f55b138e3a8d96d13f9
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Filesize
1.1MB
MD5d6cf5f8289eac27c551334578e6e4d9f
SHA125f581c79b08f85ffe729bfec35fdc1ba6ef0add
SHA2563a2b0d7aa2a94d6d537838a2a18fa25890c2df97c7708e895f7c566f7a65ab76
SHA512258c276fe07b76e1dd1fea7ad1edef73fe95942ed912b91ef1bae70a8a600f5cdce28ced0d4e124f29068ec51adc2c92dad8455481ce9f55b138e3a8d96d13f9
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Filesize
1KB
MD5ec607b3314664a69da75c6c3578480d5
SHA171051888da2de56b1014c900fec172c5a4f80ee0
SHA2561f07fbece71d67c140a10aa9993f1d5bba5250f21b7cfafcc39e4ea60689223c
SHA512343075967c4dec8acf245a606b9c8af151f64928a28ca50a525743d5daccf7b6b51b61da56506962a94afb9f6e22bed8ed48aefe7bcc484b8b4f6b86655e0d58