Analysis
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max time kernel
122s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
18-10-2024 18:24
Behavioral task
behavioral1
Sample
2024-10-18_796e7bcc691f6c21d235ae0c301b1081_destroyer_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-10-18_796e7bcc691f6c21d235ae0c301b1081_destroyer_wannacry.exe
Resource
win10v2004-20241007-en
General
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Target
2024-10-18_796e7bcc691f6c21d235ae0c301b1081_destroyer_wannacry.exe
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Size
23KB
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MD5
796e7bcc691f6c21d235ae0c301b1081
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SHA1
7ef3bf6e556cbe7261abe797a0a3bb588cd09067
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SHA256
ff231952158f7314a3e73e46b92843e98ceff8d396092873d02eb98d0705da49
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SHA512
e5e7848208ed1377de2af39aeedf1e40a684de52699faa0c4445f66037f7c7ee884d96fb2d159f7432dbb2794a651c0e9375e7bb6152c68a423b14c631d245eb
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SSDEEP
384:+3Mg/bqo2Y5FOieDopGSkobJJ3r91CvpIBVjqe0:8qo2+FOBopjH3r9KIB4e0
Malware Config
Extracted
C:\Users\Admin\Documents\read_it.txt
https://tox.chat/download.html
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 3 IoCs
resource yara_rule behavioral1/memory/764-1-0x0000000000F80000-0x0000000000F8C000-memory.dmp family_chaos behavioral1/memory/2428-7-0x00000000000C0000-0x00000000000CC000-memory.dmp family_chaos behavioral1/files/0x0007000000012118-6.dat family_chaos -
Deletes shadow copies 3 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 1816 bcdedit.exe 820 bcdedit.exe -
pid Process 1876 wbadmin.exe -
Drops startup file 3 IoCs
description ioc Process 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\read_it.txt svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2428 svchost.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops desktop.ini file(s) 34 IoCs
description ioc Process File opened for modification C:\Users\Admin\Links\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\Music\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\SendTo\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\Music\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\Downloads\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\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\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\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\AppData\Roaming\Microsoft\Windows\Start Menu\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\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\Windows\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-1488793075-819845221-1497111674-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini 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 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1796 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2364 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2428 svchost.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 764 2024-10-18_796e7bcc691f6c21d235ae0c301b1081_destroyer_wannacry.exe 764 2024-10-18_796e7bcc691f6c21d235ae0c301b1081_destroyer_wannacry.exe 764 2024-10-18_796e7bcc691f6c21d235ae0c301b1081_destroyer_wannacry.exe 2428 svchost.exe 2428 svchost.exe 2428 svchost.exe 2428 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 764 2024-10-18_796e7bcc691f6c21d235ae0c301b1081_destroyer_wannacry.exe Token: SeDebugPrivilege 2428 svchost.exe Token: SeBackupPrivilege 1736 vssvc.exe Token: SeRestorePrivilege 1736 vssvc.exe Token: SeAuditPrivilege 1736 vssvc.exe Token: SeIncreaseQuotaPrivilege 1336 WMIC.exe Token: SeSecurityPrivilege 1336 WMIC.exe Token: SeTakeOwnershipPrivilege 1336 WMIC.exe Token: SeLoadDriverPrivilege 1336 WMIC.exe Token: SeSystemProfilePrivilege 1336 WMIC.exe Token: SeSystemtimePrivilege 1336 WMIC.exe Token: SeProfSingleProcessPrivilege 1336 WMIC.exe Token: SeIncBasePriorityPrivilege 1336 WMIC.exe Token: SeCreatePagefilePrivilege 1336 WMIC.exe Token: SeBackupPrivilege 1336 WMIC.exe Token: SeRestorePrivilege 1336 WMIC.exe Token: SeShutdownPrivilege 1336 WMIC.exe Token: SeDebugPrivilege 1336 WMIC.exe Token: SeSystemEnvironmentPrivilege 1336 WMIC.exe Token: SeRemoteShutdownPrivilege 1336 WMIC.exe Token: SeUndockPrivilege 1336 WMIC.exe Token: SeManageVolumePrivilege 1336 WMIC.exe Token: 33 1336 WMIC.exe Token: 34 1336 WMIC.exe Token: 35 1336 WMIC.exe Token: SeIncreaseQuotaPrivilege 1336 WMIC.exe Token: SeSecurityPrivilege 1336 WMIC.exe Token: SeTakeOwnershipPrivilege 1336 WMIC.exe Token: SeLoadDriverPrivilege 1336 WMIC.exe Token: SeSystemProfilePrivilege 1336 WMIC.exe Token: SeSystemtimePrivilege 1336 WMIC.exe Token: SeProfSingleProcessPrivilege 1336 WMIC.exe Token: SeIncBasePriorityPrivilege 1336 WMIC.exe Token: SeCreatePagefilePrivilege 1336 WMIC.exe Token: SeBackupPrivilege 1336 WMIC.exe Token: SeRestorePrivilege 1336 WMIC.exe Token: SeShutdownPrivilege 1336 WMIC.exe Token: SeDebugPrivilege 1336 WMIC.exe Token: SeSystemEnvironmentPrivilege 1336 WMIC.exe Token: SeRemoteShutdownPrivilege 1336 WMIC.exe Token: SeUndockPrivilege 1336 WMIC.exe Token: SeManageVolumePrivilege 1336 WMIC.exe Token: 33 1336 WMIC.exe Token: 34 1336 WMIC.exe Token: 35 1336 WMIC.exe Token: SeBackupPrivilege 892 wbengine.exe Token: SeRestorePrivilege 892 wbengine.exe Token: SeSecurityPrivilege 892 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 764 wrote to memory of 2428 764 2024-10-18_796e7bcc691f6c21d235ae0c301b1081_destroyer_wannacry.exe 30 PID 764 wrote to memory of 2428 764 2024-10-18_796e7bcc691f6c21d235ae0c301b1081_destroyer_wannacry.exe 30 PID 764 wrote to memory of 2428 764 2024-10-18_796e7bcc691f6c21d235ae0c301b1081_destroyer_wannacry.exe 30 PID 2428 wrote to memory of 1724 2428 svchost.exe 32 PID 2428 wrote to memory of 1724 2428 svchost.exe 32 PID 2428 wrote to memory of 1724 2428 svchost.exe 32 PID 1724 wrote to memory of 1796 1724 cmd.exe 34 PID 1724 wrote to memory of 1796 1724 cmd.exe 34 PID 1724 wrote to memory of 1796 1724 cmd.exe 34 PID 1724 wrote to memory of 1336 1724 cmd.exe 38 PID 1724 wrote to memory of 1336 1724 cmd.exe 38 PID 1724 wrote to memory of 1336 1724 cmd.exe 38 PID 2428 wrote to memory of 2596 2428 svchost.exe 40 PID 2428 wrote to memory of 2596 2428 svchost.exe 40 PID 2428 wrote to memory of 2596 2428 svchost.exe 40 PID 2596 wrote to memory of 820 2596 cmd.exe 42 PID 2596 wrote to memory of 820 2596 cmd.exe 42 PID 2596 wrote to memory of 820 2596 cmd.exe 42 PID 2596 wrote to memory of 1816 2596 cmd.exe 43 PID 2596 wrote to memory of 1816 2596 cmd.exe 43 PID 2596 wrote to memory of 1816 2596 cmd.exe 43 PID 2428 wrote to memory of 1428 2428 svchost.exe 44 PID 2428 wrote to memory of 1428 2428 svchost.exe 44 PID 2428 wrote to memory of 1428 2428 svchost.exe 44 PID 1428 wrote to memory of 1876 1428 cmd.exe 46 PID 1428 wrote to memory of 1876 1428 cmd.exe 46 PID 1428 wrote to memory of 1876 1428 cmd.exe 46 PID 2428 wrote to memory of 2364 2428 svchost.exe 50 PID 2428 wrote to memory of 2364 2428 svchost.exe 50 PID 2428 wrote to memory of 2364 2428 svchost.exe 50 -
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\2024-10-18_796e7bcc691f6c21d235ae0c301b1081_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-18_796e7bcc691f6c21d235ae0c301b1081_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:764 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2428 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1724 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1796
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1336
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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:2596 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:820
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1816
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1428 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1876
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt3⤵
- Opens file in notepad (likely ransom note)
PID:2364
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1736
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:892
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1740
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1392
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
23KB
MD5796e7bcc691f6c21d235ae0c301b1081
SHA17ef3bf6e556cbe7261abe797a0a3bb588cd09067
SHA256ff231952158f7314a3e73e46b92843e98ceff8d396092873d02eb98d0705da49
SHA512e5e7848208ed1377de2af39aeedf1e40a684de52699faa0c4445f66037f7c7ee884d96fb2d159f7432dbb2794a651c0e9375e7bb6152c68a423b14c631d245eb
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Filesize
815B
MD56ace40f2b0e2fa58f8a98bc1fadf70f2
SHA10e83b61f2a0a2b68fa9a530cf16a1bb40300d7f5
SHA256bc4e8b349bbba233664452506649d78668edc1969f0bccb74991b04531cd4fa1
SHA51296bc866ace3e07f02471090e85e2ebd2670ca627d5b2de3c73a4094bf7d5619c5b4358f867bcfd290235bc69e7ff880b614e34a5abeecf9f9b6970d4cce8a01c