Analysis
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max time kernel
18s -
max time network
19s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
16-02-2025 23:42
Behavioral task
behavioral1
Sample
2025-02-16_6a5d6de74af2307b9ddb8e7e0a05aec3_wannacry.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
2025-02-16_6a5d6de74af2307b9ddb8e7e0a05aec3_wannacry.exe
Resource
win10v2004-20250211-en
General
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Target
2025-02-16_6a5d6de74af2307b9ddb8e7e0a05aec3_wannacry.exe
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Size
130KB
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MD5
6a5d6de74af2307b9ddb8e7e0a05aec3
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SHA1
a9bb545b11c8b4415359fead7a92ea848f508530
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SHA256
4e44d16e3c4274d3a49d8562299659b7177632e484ca7ba3c0d7a95bc44d686a
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SHA512
bffc0eed72576ac2b0d68410db02d76369bd937d9a4767cc0edd021343cf8f0a81af9813cb0038726ff61ac274f81ae4144f3717148807ba5973b7103408f8f2
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SSDEEP
768:w7zxAmCgnegjDho9Ws82FOfMCwRhOF15utoS:wNCRADq9W3cS/wCFLS
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\read_it.txt
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/1996-1-0x0000000000F50000-0x0000000000F76000-memory.dmp family_chaos behavioral1/files/0x00070000000120fc-6.dat family_chaos behavioral1/memory/2804-8-0x00000000012E0000-0x0000000001306000-memory.dmp family_chaos -
Chaos family
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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 2588 bcdedit.exe 924 bcdedit.exe -
pid Process 2612 wbadmin.exe -
Disables Task Manager via registry modification
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Drops startup file 2 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini DDosYashma.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt DDosYashma.exe -
Executes dropped EXE 1 IoCs
pid Process 2804 DDosYashma.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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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\UpdateTask = "C:\\Users\\Admin\\AppData\\Roaming\\DDosYashma.exe" DDosYashma.exe -
Drops desktop.ini file(s) 64 IoCs
description ioc Process File opened for modification C:\Users\Public\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\BBWU148F\desktop.ini DDosYashma.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\desktop.ini DDosYashma.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini DDosYashma.exe File opened for modification C:\Users\Public\Libraries\desktop.ini DDosYashma.exe File opened for modification C:\Users\Public\Music\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\5O2ZS8DL\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\desktop.ini DDosYashma.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\History.IE5\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\Music\desktop.ini DDosYashma.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\desktop.ini DDosYashma.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini DDosYashma.exe File opened for modification C:\Users\Public\Desktop\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini DDosYashma.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3692679935-4019334568-335155002-1000\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\Searches\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\4TDQSVWU\desktop.ini DDosYashma.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini DDosYashma.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini DDosYashma.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\4KNYJNXZ\desktop.ini DDosYashma.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Ringtones\desktop.ini DDosYashma.exe File opened for modification C:\Users\Public\Pictures\desktop.ini DDosYashma.exe File opened for modification C:\Users\Public\Videos\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\ADWO43R6\desktop.ini DDosYashma.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Games\Desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini DDosYashma.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\Desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini DDosYashma.exe File opened for modification C:\Users\Public\Recorded TV\Sample Media\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\1U7Y9BT8\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\desktop.ini DDosYashma.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini DDosYashma.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini DDosYashma.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini DDosYashma.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini DDosYashma.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini DDosYashma.exe File opened for modification C:\Users\Public\Documents\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\SEGJVAZC\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini DDosYashma.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\Links\desktop.ini DDosYashma.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini DDosYashma.exe File opened for modification C:\Users\Public\Downloads\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\Videos\desktop.ini DDosYashma.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\G0UQMQ1C\desktop.ini DDosYashma.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 2672 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2296 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 1996 2025-02-16_6a5d6de74af2307b9ddb8e7e0a05aec3_wannacry.exe 2804 DDosYashma.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1996 2025-02-16_6a5d6de74af2307b9ddb8e7e0a05aec3_wannacry.exe 2804 DDosYashma.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 1996 2025-02-16_6a5d6de74af2307b9ddb8e7e0a05aec3_wannacry.exe Token: SeDebugPrivilege 2804 DDosYashma.exe Token: SeBackupPrivilege 2700 vssvc.exe Token: SeRestorePrivilege 2700 vssvc.exe Token: SeAuditPrivilege 2700 vssvc.exe Token: SeIncreaseQuotaPrivilege 1624 WMIC.exe Token: SeSecurityPrivilege 1624 WMIC.exe Token: SeTakeOwnershipPrivilege 1624 WMIC.exe Token: SeLoadDriverPrivilege 1624 WMIC.exe Token: SeSystemProfilePrivilege 1624 WMIC.exe Token: SeSystemtimePrivilege 1624 WMIC.exe Token: SeProfSingleProcessPrivilege 1624 WMIC.exe Token: SeIncBasePriorityPrivilege 1624 WMIC.exe Token: SeCreatePagefilePrivilege 1624 WMIC.exe Token: SeBackupPrivilege 1624 WMIC.exe Token: SeRestorePrivilege 1624 WMIC.exe Token: SeShutdownPrivilege 1624 WMIC.exe Token: SeDebugPrivilege 1624 WMIC.exe Token: SeSystemEnvironmentPrivilege 1624 WMIC.exe Token: SeRemoteShutdownPrivilege 1624 WMIC.exe Token: SeUndockPrivilege 1624 WMIC.exe Token: SeManageVolumePrivilege 1624 WMIC.exe Token: 33 1624 WMIC.exe Token: 34 1624 WMIC.exe Token: 35 1624 WMIC.exe Token: SeIncreaseQuotaPrivilege 1624 WMIC.exe Token: SeSecurityPrivilege 1624 WMIC.exe Token: SeTakeOwnershipPrivilege 1624 WMIC.exe Token: SeLoadDriverPrivilege 1624 WMIC.exe Token: SeSystemProfilePrivilege 1624 WMIC.exe Token: SeSystemtimePrivilege 1624 WMIC.exe Token: SeProfSingleProcessPrivilege 1624 WMIC.exe Token: SeIncBasePriorityPrivilege 1624 WMIC.exe Token: SeCreatePagefilePrivilege 1624 WMIC.exe Token: SeBackupPrivilege 1624 WMIC.exe Token: SeRestorePrivilege 1624 WMIC.exe Token: SeShutdownPrivilege 1624 WMIC.exe Token: SeDebugPrivilege 1624 WMIC.exe Token: SeSystemEnvironmentPrivilege 1624 WMIC.exe Token: SeRemoteShutdownPrivilege 1624 WMIC.exe Token: SeUndockPrivilege 1624 WMIC.exe Token: SeManageVolumePrivilege 1624 WMIC.exe Token: 33 1624 WMIC.exe Token: 34 1624 WMIC.exe Token: 35 1624 WMIC.exe Token: SeBackupPrivilege 2968 wbengine.exe Token: SeRestorePrivilege 2968 wbengine.exe Token: SeSecurityPrivilege 2968 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1996 wrote to memory of 2804 1996 2025-02-16_6a5d6de74af2307b9ddb8e7e0a05aec3_wannacry.exe 29 PID 1996 wrote to memory of 2804 1996 2025-02-16_6a5d6de74af2307b9ddb8e7e0a05aec3_wannacry.exe 29 PID 1996 wrote to memory of 2804 1996 2025-02-16_6a5d6de74af2307b9ddb8e7e0a05aec3_wannacry.exe 29 PID 2804 wrote to memory of 2812 2804 DDosYashma.exe 30 PID 2804 wrote to memory of 2812 2804 DDosYashma.exe 30 PID 2804 wrote to memory of 2812 2804 DDosYashma.exe 30 PID 2812 wrote to memory of 2672 2812 cmd.exe 32 PID 2812 wrote to memory of 2672 2812 cmd.exe 32 PID 2812 wrote to memory of 2672 2812 cmd.exe 32 PID 2812 wrote to memory of 1624 2812 cmd.exe 35 PID 2812 wrote to memory of 1624 2812 cmd.exe 35 PID 2812 wrote to memory of 1624 2812 cmd.exe 35 PID 2804 wrote to memory of 1260 2804 DDosYashma.exe 37 PID 2804 wrote to memory of 1260 2804 DDosYashma.exe 37 PID 2804 wrote to memory of 1260 2804 DDosYashma.exe 37 PID 1260 wrote to memory of 2588 1260 cmd.exe 39 PID 1260 wrote to memory of 2588 1260 cmd.exe 39 PID 1260 wrote to memory of 2588 1260 cmd.exe 39 PID 1260 wrote to memory of 924 1260 cmd.exe 40 PID 1260 wrote to memory of 924 1260 cmd.exe 40 PID 1260 wrote to memory of 924 1260 cmd.exe 40 PID 2804 wrote to memory of 3016 2804 DDosYashma.exe 41 PID 2804 wrote to memory of 3016 2804 DDosYashma.exe 41 PID 2804 wrote to memory of 3016 2804 DDosYashma.exe 41 PID 3016 wrote to memory of 2612 3016 cmd.exe 43 PID 3016 wrote to memory of 2612 3016 cmd.exe 43 PID 3016 wrote to memory of 2612 3016 cmd.exe 43 PID 2804 wrote to memory of 2296 2804 DDosYashma.exe 48 PID 2804 wrote to memory of 2296 2804 DDosYashma.exe 48 PID 2804 wrote to memory of 2296 2804 DDosYashma.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\2025-02-16_6a5d6de74af2307b9ddb8e7e0a05aec3_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2025-02-16_6a5d6de74af2307b9ddb8e7e0a05aec3_wannacry.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1996 -
C:\Users\Admin\AppData\Roaming\DDosYashma.exe"C:\Users\Admin\AppData\Roaming\DDosYashma.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops desktop.ini file(s)
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2804 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2812 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2672
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1624
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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:1260 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2588
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:924
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:3016 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2612
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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:2296
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2700
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2968
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2764
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:540
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
582B
MD5ed5cc52876db869de48a4783069c2a5e
SHA1a9d51ceaeff715ace430f9462ab2ee4e7f33e70e
SHA25645726f2f29967ef016f8d556fb6468a577307d67388cc4530295a9ca10fdfa36
SHA5121745aefb9b4db4cdd7c08ee3a7d133db08f35a336fd18b598211519b481ef25ac84a3e8a3da3db06caef9f531288d1cf0ca8d4b2560637945e7953e8b45421f5
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Filesize
130KB
MD56a5d6de74af2307b9ddb8e7e0a05aec3
SHA1a9bb545b11c8b4415359fead7a92ea848f508530
SHA2564e44d16e3c4274d3a49d8562299659b7177632e484ca7ba3c0d7a95bc44d686a
SHA512bffc0eed72576ac2b0d68410db02d76369bd937d9a4767cc0edd021343cf8f0a81af9813cb0038726ff61ac274f81ae4144f3717148807ba5973b7103408f8f2
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0