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Analysis
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max time kernel
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max time network
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platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
06/04/2024, 15:35
Behavioral task
behavioral1
Sample
2024-04-06_4c5cb08f2367e302ecb42531c36776a0_wannacry.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-04-06_4c5cb08f2367e302ecb42531c36776a0_wannacry.exe
Resource
win10v2004-20240226-en
General
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Target
2024-04-06_4c5cb08f2367e302ecb42531c36776a0_wannacry.exe
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Size
280KB
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MD5
4c5cb08f2367e302ecb42531c36776a0
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SHA1
4f1d06dd3cb123214aa25aba3fd3d142cdc1e8dc
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SHA256
2dec9e4e6c2b23869ee65cacc7f0011dc3592c5c2ba2da8358063741671a4ad6
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SHA512
a79f4808e48872b65262aa3a57f1239eb0698c86f3f48f619d6cb6349d85c6e4007228e67eccc4e4158c83cc4fa4498066d26bf95fa9934c8ad2224ac10c0be4
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SSDEEP
6144:qr9L8jq2Gteiy0KhK6bClLmlJNZtHim/WnA/77FfA4RL4xLZTogzI:jPGteiy0cKeeLmlJNZtCmGM7FfxLctTr
Malware Config
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 4 IoCs
resource yara_rule behavioral1/memory/2184-0-0x0000000000040000-0x000000000008C000-memory.dmp family_chaos behavioral1/files/0x000c000000012331-5.dat family_chaos behavioral1/memory/1672-7-0x0000000001090000-0x00000000010DC000-memory.dmp family_chaos behavioral1/memory/1672-11-0x000000001AEF0000-0x000000001AF70000-memory.dmp family_chaos -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Detects command variations typically used by ransomware 4 IoCs
resource yara_rule behavioral1/memory/2184-0-0x0000000000040000-0x000000000008C000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral1/files/0x000c000000012331-5.dat INDICATOR_SUSPICIOUS_GENRansomware behavioral1/memory/1672-7-0x0000000001090000-0x00000000010DC000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral1/memory/1672-11-0x000000001AEF0000-0x000000001AF70000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 2128 bcdedit.exe 1236 bcdedit.exe -
pid Process 1688 wbadmin.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\read_it.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 1672 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) 34 IoCs
description ioc Process 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\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\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 for United States\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\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\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\Documents\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2721934792-624042501-2768869379-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\Administrative Tools\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\Pictures\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\Public\Pictures\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\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\Recent\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\d1blibsnh.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 2892 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1728 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1672 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2184 2024-04-06_4c5cb08f2367e302ecb42531c36776a0_wannacry.exe 2184 2024-04-06_4c5cb08f2367e302ecb42531c36776a0_wannacry.exe 1672 svchost.exe 1672 svchost.exe 1672 svchost.exe 1672 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2184 2024-04-06_4c5cb08f2367e302ecb42531c36776a0_wannacry.exe Token: SeDebugPrivilege 1672 svchost.exe Token: SeBackupPrivilege 1360 vssvc.exe Token: SeRestorePrivilege 1360 vssvc.exe Token: SeAuditPrivilege 1360 vssvc.exe Token: SeIncreaseQuotaPrivilege 1856 WMIC.exe Token: SeSecurityPrivilege 1856 WMIC.exe Token: SeTakeOwnershipPrivilege 1856 WMIC.exe Token: SeLoadDriverPrivilege 1856 WMIC.exe Token: SeSystemProfilePrivilege 1856 WMIC.exe Token: SeSystemtimePrivilege 1856 WMIC.exe Token: SeProfSingleProcessPrivilege 1856 WMIC.exe Token: SeIncBasePriorityPrivilege 1856 WMIC.exe Token: SeCreatePagefilePrivilege 1856 WMIC.exe Token: SeBackupPrivilege 1856 WMIC.exe Token: SeRestorePrivilege 1856 WMIC.exe Token: SeShutdownPrivilege 1856 WMIC.exe Token: SeDebugPrivilege 1856 WMIC.exe Token: SeSystemEnvironmentPrivilege 1856 WMIC.exe Token: SeRemoteShutdownPrivilege 1856 WMIC.exe Token: SeUndockPrivilege 1856 WMIC.exe Token: SeManageVolumePrivilege 1856 WMIC.exe Token: 33 1856 WMIC.exe Token: 34 1856 WMIC.exe Token: 35 1856 WMIC.exe Token: SeIncreaseQuotaPrivilege 1856 WMIC.exe Token: SeSecurityPrivilege 1856 WMIC.exe Token: SeTakeOwnershipPrivilege 1856 WMIC.exe Token: SeLoadDriverPrivilege 1856 WMIC.exe Token: SeSystemProfilePrivilege 1856 WMIC.exe Token: SeSystemtimePrivilege 1856 WMIC.exe Token: SeProfSingleProcessPrivilege 1856 WMIC.exe Token: SeIncBasePriorityPrivilege 1856 WMIC.exe Token: SeCreatePagefilePrivilege 1856 WMIC.exe Token: SeBackupPrivilege 1856 WMIC.exe Token: SeRestorePrivilege 1856 WMIC.exe Token: SeShutdownPrivilege 1856 WMIC.exe Token: SeDebugPrivilege 1856 WMIC.exe Token: SeSystemEnvironmentPrivilege 1856 WMIC.exe Token: SeRemoteShutdownPrivilege 1856 WMIC.exe Token: SeUndockPrivilege 1856 WMIC.exe Token: SeManageVolumePrivilege 1856 WMIC.exe Token: 33 1856 WMIC.exe Token: 34 1856 WMIC.exe Token: 35 1856 WMIC.exe Token: SeBackupPrivilege 2752 wbengine.exe Token: SeRestorePrivilege 2752 wbengine.exe Token: SeSecurityPrivilege 2752 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2184 wrote to memory of 1672 2184 2024-04-06_4c5cb08f2367e302ecb42531c36776a0_wannacry.exe 28 PID 2184 wrote to memory of 1672 2184 2024-04-06_4c5cb08f2367e302ecb42531c36776a0_wannacry.exe 28 PID 2184 wrote to memory of 1672 2184 2024-04-06_4c5cb08f2367e302ecb42531c36776a0_wannacry.exe 28 PID 1672 wrote to memory of 2328 1672 svchost.exe 30 PID 1672 wrote to memory of 2328 1672 svchost.exe 30 PID 1672 wrote to memory of 2328 1672 svchost.exe 30 PID 2328 wrote to memory of 2892 2328 cmd.exe 32 PID 2328 wrote to memory of 2892 2328 cmd.exe 32 PID 2328 wrote to memory of 2892 2328 cmd.exe 32 PID 2328 wrote to memory of 1856 2328 cmd.exe 35 PID 2328 wrote to memory of 1856 2328 cmd.exe 35 PID 2328 wrote to memory of 1856 2328 cmd.exe 35 PID 1672 wrote to memory of 2096 1672 svchost.exe 37 PID 1672 wrote to memory of 2096 1672 svchost.exe 37 PID 1672 wrote to memory of 2096 1672 svchost.exe 37 PID 2096 wrote to memory of 2128 2096 cmd.exe 39 PID 2096 wrote to memory of 2128 2096 cmd.exe 39 PID 2096 wrote to memory of 2128 2096 cmd.exe 39 PID 2096 wrote to memory of 1236 2096 cmd.exe 40 PID 2096 wrote to memory of 1236 2096 cmd.exe 40 PID 2096 wrote to memory of 1236 2096 cmd.exe 40 PID 1672 wrote to memory of 2468 1672 svchost.exe 41 PID 1672 wrote to memory of 2468 1672 svchost.exe 41 PID 1672 wrote to memory of 2468 1672 svchost.exe 41 PID 2468 wrote to memory of 1688 2468 cmd.exe 43 PID 2468 wrote to memory of 1688 2468 cmd.exe 43 PID 2468 wrote to memory of 1688 2468 cmd.exe 43 PID 1672 wrote to memory of 1728 1672 svchost.exe 47 PID 1672 wrote to memory of 1728 1672 svchost.exe 47 PID 1672 wrote to memory of 1728 1672 svchost.exe 47 -
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\2024-04-06_4c5cb08f2367e302ecb42531c36776a0_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-06_4c5cb08f2367e302ecb42531c36776a0_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2184 -
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)
- Sets desktop wallpaper using registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1672 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2328 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2892
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1856
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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:2096 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2128
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1236
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2468 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1688
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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:1728
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1360
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2752
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2200
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1924
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
280KB
MD54c5cb08f2367e302ecb42531c36776a0
SHA14f1d06dd3cb123214aa25aba3fd3d142cdc1e8dc
SHA2562dec9e4e6c2b23869ee65cacc7f0011dc3592c5c2ba2da8358063741671a4ad6
SHA512a79f4808e48872b65262aa3a57f1239eb0698c86f3f48f619d6cb6349d85c6e4007228e67eccc4e4158c83cc4fa4498066d26bf95fa9934c8ad2224ac10c0be4
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Filesize
984B
MD5a9025b6c8b3bd35e386bb0f8b97c6f2f
SHA1322cfbb0af7316d54ba22d2db71ad7e9cede073e
SHA256c88315ca4262a30f70a14fc49729c31e78c5cd40c6a34660964b0c121d064954
SHA51248072e27249be0b3ec835de962c2b1a842748d1541c06a439a1f3fe61afed4e45051c641bb2e4975b71664e79be61e9982dcb0d6e2000b3ab413c445e5850d40