cbac3e598d3493c1736f3abc684d4735ad290b6ede81d50e4944c727b77d93d0

Analysis

max time kernel
151s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
02/12/2022, 19:54

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General

Target

Annabelle.exe
Size

15.9MB
MD5

0f743287c9911b4b1c726c7c7edcaf7d
SHA1

9760579e73095455fcbaddfe1e7e98a2bb28bfe0
SHA256

716335ba5cd1e7186c40295b199190e2b6655e48f1c1cbe12139ba67faa5e1ac
SHA512

2a6dd6288303700ef9cb06ae1efeb1e121c89c97708e5ecd15ed9b2a35d0ecff03d8da58b30daeadad89bd38dc4649521ada149fb457408e5a2bdf1512f88677
SSDEEP

393216:UMwm0qBknxdEX+LbMUgoSZmWSmh4aaRN22ChHCMNku1y:UMcKX+Lbjgd7W1RNVC9ku1

Score

10^/10

evasion persistence ransomware trojan

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Annabelle.exe"	Annabelle.exe

Modifies Windows Defender Real-time Protection settings 3 TTPs 2 IoCs

evasion trojan

Modify Registry

T1112

Modify Existing Service

T1031

Disabling Security Tools

T1089

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	Annabelle.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	Annabelle.exe

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Annabelle.exe

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Disables RegEdit via registry modification 2 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	Annabelle.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	Annabelle.exe

Disables Task Manager via registry modification
evasion
Disables use of System Restore points 1 TTPs
evasion

Inhibit System Recovery
T1490

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1096	NetSh.exe

Modifies extensions of user files 4 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\ReadStart.raw.ANNABELLE	Annabelle.exe
File opened for modification	C:\Users\Admin\Pictures\RedoMount.raw.ANNABELLE	Annabelle.exe
File opened for modification	C:\Users\Admin\Pictures\CompressSave.png.ANNABELLE	Annabelle.exe
File opened for modification	C:\Users\Admin\Pictures\JoinPop.png.ANNABELLE	Annabelle.exe

Sets file execution options in registry 2 TTPs 64 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\cmd.exe	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\microsoftedgecp.exe	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\notepad.exe	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\notepad.exe\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\sethc.exe\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rasman.dll\Debugger = "RIP"	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rasman.dll	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\webcheck.dll	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mmc.exe\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\attrib.exe\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\cabinet.dll\Debugger = "RIP"	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\chkdsk.exe	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\DCIMAN32.exe	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\wmplayer.exe	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\firefox.exe\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\bcdedit.exe\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rundll32.exe\Debugger = "RIP"	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mpg4dmod.dll	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\webcheck.dll\Debugger = "RIP"	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MSASCuiL.exe	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MSASCuiL.exe\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mpg4dmod.dll\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\logoff.exe\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\microsoftedge.exe\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\url.dll\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\chrome.exe\Debugger = "RIP"	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mmc.exe	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\systemexplorer.exe\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskkill.exe\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rundll.exe\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\wmplayer.exe\Debugger = "RIP"	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Autoruns.exe	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\yandex.exe	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rundll32.exe	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\shellstyle.dll\Debugger = "RIP"	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\recoverydrive.exe	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\dllhost.exe\Debugger = "RIP"	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\cabinet.dll	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\DBGHELP.exe	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\control.exe	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\notepad++.exe	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\systemexplorer.exe	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\yandex.exe\Debugger = "RIP"	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\shellstyle.dll	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\firefox.exe	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\opera.exe	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\iexplore.exe\Debugger = "RIP"	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\gpedit.msc	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\UserAccountControlSettings.exe\Debugger = "RIP"	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mydocs.dll	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\DBGHELP.exe\Debugger = "RIP"	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\secpol.msc	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe\Debugger = "RIP"	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskkill.exe	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\powershell.exe	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\bcdedit.exe	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\dllhost.exe	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\secpol.msc\Debugger = "RIP"	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\usbui.dll	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\usbui.dll\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\DCIMAN32.exe\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\control.exe\Debugger = "RIP"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\opera.exe\Debugger = "RIP"	Annabelle.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\UpdateBackup = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Annabelle.exe"	Annabelle.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\UpdateBackup = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Annabelle.exe"	Annabelle.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\UpdateBackup = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Annabelle.exe"	Annabelle.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Annabelle.exe

Interacts with shadow copies 2 TTPs 3 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
1228	vssadmin.exe
1320	vssadmin.exe
1928	vssadmin.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	516	vssvc.exe
Token: SeRestorePrivilege	516	vssvc.exe
Token: SeAuditPrivilege	516	vssvc.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1908 wrote to memory of 1228	1908	Annabelle.exe	28
PID 1908 wrote to memory of 1228	1908	Annabelle.exe	28
PID 1908 wrote to memory of 1228	1908	Annabelle.exe	28
PID 1908 wrote to memory of 1320	1908	Annabelle.exe	30
PID 1908 wrote to memory of 1320	1908	Annabelle.exe	30
PID 1908 wrote to memory of 1320	1908	Annabelle.exe	30
PID 1908 wrote to memory of 1928	1908	Annabelle.exe	34
PID 1908 wrote to memory of 1928	1908	Annabelle.exe	34
PID 1908 wrote to memory of 1928	1908	Annabelle.exe	34
PID 1908 wrote to memory of 1096	1908	Annabelle.exe	32
PID 1908 wrote to memory of 1096	1908	Annabelle.exe	32
PID 1908 wrote to memory of 1096	1908	Annabelle.exe	32

System policy modification 1 TTPs 9 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableTaskMgr = "1"	Annabelle.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoControlPanel = "1"	Annabelle.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoRun = "1"	Annabelle.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	Annabelle.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\WindowsDefenderMAJ = "1"	Annabelle.exe
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer	Annabelle.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	Annabelle.exe
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System	Annabelle.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	Annabelle.exe

C:\Users\Admin\AppData\Local\Temp\Annabelle.exe
"C:\Users\Admin\AppData\Local\Temp\Annabelle.exe"
1⤵
- Modifies WinLogon for persistence
- Modifies Windows Defender Real-time Protection settings
- UAC bypass
- Disables RegEdit via registry modification
- Modifies extensions of user files
- Sets file execution options in registry
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1908
- C:\Windows\system32\vssadmin.exe
  vssadmin delete shadows /all /quiet
  2⤵
  - Interacts with shadow copies
  PID:1228
- C:\Windows\system32\vssadmin.exe
  vssadmin delete shadows /all /quiet
  2⤵
  - Interacts with shadow copies
  PID:1320
- C:\Windows\system32\NetSh.exe
  NetSh Advfirewall set allprofiles state off
  2⤵
  - Modifies Windows Firewall
  PID:1096
- C:\Windows\system32\vssadmin.exe
  vssadmin delete shadows /all /quiet
  2⤵
  - Interacts with shadow copies
  PID:1928

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:516

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

T1089

File Deletion

T1107

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

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Downloads

memory/1096-60-0x000007FEFC421000-0x000007FEFC423000-memory.dmp

Filesize
8KB

Download
memory/1908-54-0x000000013FAE0000-0x0000000140AD4000-memory.dmp

Filesize
16.0MB

Download
memory/1908-55-0x000000001BAF0000-0x000000001D07E000-memory.dmp

Filesize
21.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads