Analysis
- max time kernel
147s - max time network
128s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system - submitted
04/08/2024, 09:17
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
NexusLoader.exe
Resource
win7-20240704-en
17 signatures
150 seconds
Behavioral task
behavioral2
Sample
NexusLoader.exe
Resource
win10v2004-20240802-en
14 signatures
150 seconds
General
- Target NexusLoader.exe
- Size 224KB
- Sample240804-k9gthswdrc
- SHA256 be22645c61949ad6a077373a7d6cd85e3fae44315632f161adc4c99d5a8e6844
- MD5 5c7fb0927db37372da25f270708103a2
- SHA1 120ed9279d85cbfa56e5b7779ffa7162074f7a29
- SHA512 a15f97fad744ccf5f620e5aabb81f48507327b898a9aa4287051464019e0f89224c484e9691812e166471af9beaddcfc3deb2ba878658761f4800663beef7206
- SSDEEP 3072:Y059femWRwTs/dbelj0X8/j84pcRXPlU3Upt3or4H84lK8PtpLzLsR/EfcZ:+5RwTs/dSXj84mRXPemxdBlPvLzLeZ
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
Path
-
C:\Users\Admin\AppData\Local\Temp\!Please Read Me!.txt
-
wannacry
Ransom Note
- Q: What's wrong with my files? A: Ooops, your important files are encrypted. It means you will not be able to access them anymore until they are decrypted. If you follow our instructions we guarantee that you can decrypt all your files quickly and safely! Let's start decrypting! Q: What do I do? A: First, you need to pay service fees for the decryption. Please send $300 worth of bitcoin to this bitcoin address: 15zGqZCTcys6eCjDkE3DypCjXi6QWRV6V1 Next, please find the decrypt software on your desktop, an executable file named "!WannaDecryptor!.exe". If it does not exsit, download the software from the address below. (You may need to disable your antivirus for a while.) rar password: wcry123 Run and follow the instructions! �
Wallets
-
15zGqZCTcys6eCjDkE3DypCjXi6QWRV6V1
Signatures
- Wannacry
WannaCry is a ransomware cryptoworm.
- Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
- Drops startup file 2 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SD61E5.tmp NexusLoader.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SD61EC.tmp NexusLoader.exe - Executes dropped EXE 4 IoCs
pid Process 2516 !WannaDecryptor!.exe 3428 !WannaDecryptor!.exe 404 !WannaDecryptor!.exe 1160 !WannaDecryptor!.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Microsoft Update Task Scheduler = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\NexusLoader.exe\" /r" NexusLoader.exe - Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\!WannaCryptor!.bmp" !WannaDecryptor!.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 14 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language NexusLoader.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cscript.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language WMIC.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language !WannaDecryptor!.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language !WannaDecryptor!.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language !WannaDecryptor!.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language !WannaDecryptor!.exe - Kills process with taskkill 4 IoCs
pid Process 4284 taskkill.exe 3540 taskkill.exe 2492 taskkill.exe 952 taskkill.exe - Suspicious use of AdjustPrivilegeToken 49 IoCs
description pid Process Token: SeDebugPrivilege 4284 taskkill.exe Token: SeDebugPrivilege 3540 taskkill.exe Token: SeDebugPrivilege 952 taskkill.exe Token: SeDebugPrivilege 2492 taskkill.exe Token: SeIncreaseQuotaPrivilege 3440 WMIC.exe Token: SeSecurityPrivilege 3440 WMIC.exe Token: SeTakeOwnershipPrivilege 3440 WMIC.exe Token: SeLoadDriverPrivilege 3440 WMIC.exe Token: SeSystemProfilePrivilege 3440 WMIC.exe Token: SeSystemtimePrivilege 3440 WMIC.exe Token: SeProfSingleProcessPrivilege 3440 WMIC.exe Token: SeIncBasePriorityPrivilege 3440 WMIC.exe Token: SeCreatePagefilePrivilege 3440 WMIC.exe Token: SeBackupPrivilege 3440 WMIC.exe Token: SeRestorePrivilege 3440 WMIC.exe Token: SeShutdownPrivilege 3440 WMIC.exe Token: SeDebugPrivilege 3440 WMIC.exe Token: SeSystemEnvironmentPrivilege 3440 WMIC.exe Token: SeRemoteShutdownPrivilege 3440 WMIC.exe Token: SeUndockPrivilege 3440 WMIC.exe Token: SeManageVolumePrivilege 3440 WMIC.exe Token: 33 3440 WMIC.exe Token: 34 3440 WMIC.exe Token: 35 3440 WMIC.exe Token: 36 3440 WMIC.exe Token: SeIncreaseQuotaPrivilege 3440 WMIC.exe Token: SeSecurityPrivilege 3440 WMIC.exe Token: SeTakeOwnershipPrivilege 3440 WMIC.exe Token: SeLoadDriverPrivilege 3440 WMIC.exe Token: SeSystemProfilePrivilege 3440 WMIC.exe Token: SeSystemtimePrivilege 3440 WMIC.exe Token: SeProfSingleProcessPrivilege 3440 WMIC.exe Token: SeIncBasePriorityPrivilege 3440 WMIC.exe Token: SeCreatePagefilePrivilege 3440 WMIC.exe Token: SeBackupPrivilege 3440 WMIC.exe Token: SeRestorePrivilege 3440 WMIC.exe Token: SeShutdownPrivilege 3440 WMIC.exe Token: SeDebugPrivilege 3440 WMIC.exe Token: SeSystemEnvironmentPrivilege 3440 WMIC.exe Token: SeRemoteShutdownPrivilege 3440 WMIC.exe Token: SeUndockPrivilege 3440 WMIC.exe Token: SeManageVolumePrivilege 3440 WMIC.exe Token: 33 3440 WMIC.exe Token: 34 3440 WMIC.exe Token: 35 3440 WMIC.exe Token: 36 3440 WMIC.exe Token: SeBackupPrivilege 2108 vssvc.exe Token: SeRestorePrivilege 2108 vssvc.exe Token: SeAuditPrivilege 2108 vssvc.exe - Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 2516 !WannaDecryptor!.exe 2516 !WannaDecryptor!.exe 3428 !WannaDecryptor!.exe 3428 !WannaDecryptor!.exe 404 !WannaDecryptor!.exe 404 !WannaDecryptor!.exe 1160 !WannaDecryptor!.exe 1160 !WannaDecryptor!.exe - Suspicious use of WriteProcessMemory 39 IoCs
description pid Process procid_target PID 2896 wrote to memory of 4688 2896 NexusLoader.exe 92 PID 2896 wrote to memory of 4688 2896 NexusLoader.exe 92 PID 2896 wrote to memory of 4688 2896 NexusLoader.exe 92 PID 4688 wrote to memory of 4044 4688 cmd.exe 94 PID 4688 wrote to memory of 4044 4688 cmd.exe 94 PID 4688 wrote to memory of 4044 4688 cmd.exe 94 PID 2896 wrote to memory of 2516 2896 NexusLoader.exe 96 PID 2896 wrote to memory of 2516 2896 NexusLoader.exe 96 PID 2896 wrote to memory of 2516 2896 NexusLoader.exe 96 PID 2896 wrote to memory of 952 2896 NexusLoader.exe 97 PID 2896 wrote to memory of 952 2896 NexusLoader.exe 97 PID 2896 wrote to memory of 952 2896 NexusLoader.exe 97 PID 2896 wrote to memory of 4284 2896 NexusLoader.exe 98 PID 2896 wrote to memory of 4284 2896 NexusLoader.exe 98 PID 2896 wrote to memory of 4284 2896 NexusLoader.exe 98 PID 2896 wrote to memory of 3540 2896 NexusLoader.exe 99 PID 2896 wrote to memory of 3540 2896 NexusLoader.exe 99 PID 2896 wrote to memory of 3540 2896 NexusLoader.exe 99 PID 2896 wrote to memory of 2492 2896 NexusLoader.exe 100 PID 2896 wrote to memory of 2492 2896 NexusLoader.exe 100 PID 2896 wrote to memory of 2492 2896 NexusLoader.exe 100 PID 2896 wrote to memory of 3428 2896 NexusLoader.exe 108 PID 2896 wrote to memory of 3428 2896 NexusLoader.exe 108 PID 2896 wrote to memory of 3428 2896 NexusLoader.exe 108 PID 2896 wrote to memory of 5088 2896 NexusLoader.exe 109 PID 2896 wrote to memory of 5088 2896 NexusLoader.exe 109 PID 2896 wrote to memory of 5088 2896 NexusLoader.exe 109 PID 5088 wrote to memory of 404 5088 cmd.exe 111 PID 5088 wrote to memory of 404 5088 cmd.exe 111 PID 5088 wrote to memory of 404 5088 cmd.exe 111 PID 2896 wrote to memory of 1160 2896 NexusLoader.exe 113 PID 2896 wrote to memory of 1160 2896 NexusLoader.exe 113 PID 2896 wrote to memory of 1160 2896 NexusLoader.exe 113 PID 404 wrote to memory of 3528 404 !WannaDecryptor!.exe 114 PID 404 wrote to memory of 3528 404 !WannaDecryptor!.exe 114 PID 404 wrote to memory of 3528 404 !WannaDecryptor!.exe 114 PID 3528 wrote to memory of 3440 3528 cmd.exe 116 PID 3528 wrote to memory of 3440 3528 cmd.exe 116 PID 3528 wrote to memory of 3440 3528 cmd.exe 116 - 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\NexusLoader.exe"C:\Users\Admin\AppData\Local\Temp\NexusLoader.exe"1⤵
- Drops startup file
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2896 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c 96311722763097.bat2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4688 -
C:\Windows\SysWOW64\cscript.execscript //nologo c.vbs3⤵
- System Location Discovery: System Language Discovery
PID:4044
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-
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C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe f2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:2516
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C:\Windows\SysWOW64\taskkill.exetaskkill /f /im MSExchange*2⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:952
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C:\Windows\SysWOW64\taskkill.exetaskkill /f /im Microsoft.Exchange.*2⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4284
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C:\Windows\SysWOW64\taskkill.exetaskkill /f /im sqlserver.exe2⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3540
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C:\Windows\SysWOW64\taskkill.exetaskkill /f /im sqlwriter.exe2⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2492
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C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe c2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:3428
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C:\Windows\SysWOW64\cmd.execmd.exe /c start /b !WannaDecryptor!.exe v2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5088 -
C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe v3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:404 -
C:\Windows\SysWOW64\cmd.execmd.exe /c vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3528 -
C:\Windows\SysWOW64\Wbem\WMIC.exewmic shadowcopy delete5⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3440
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-
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C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe2⤵
- Executes dropped EXE
- Sets desktop wallpaper using registry
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:1160
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4412,i,1602949858158667699,12464335823361976127,262144 --variations-seed-version --mojo-platform-channel-handle=1000 /prefetch:81⤵PID:2100
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2108
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\!Please Read Me!.txt
- Size 797B
- SHA256 227082c719fd4394c1f2311a0877d8a302c5b092bcc49f853a5cf3d2945f42b0
- MD5 afa18cf4aa2660392111763fb93a8c3d
- SHA1 c219a3654a5f41ce535a09f2a188a464c3f5baf5
- SHA512 4161f250d59b7d4d4a6c4f16639d66d21b2a9606de956d22ec00bedb006643fedbbb8e4cde9f6c0c977285918648314883ca91f3442d1125593bf2605f2d5c6b
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe.lnk
- Size 1KB
- SHA256 f1ab4ea23a9f3168c9d9bad224f2350fcb3a23a4e30002e8545f65b96ace07b5
- MD5 68ca323d7a72ab75d1d213890e69b286
- SHA1 bd86649956c463bb8fbfbdbc1a86d91c900d5d73
- SHA512 7d69d47976176d3f5d028390e790603ff37108315a2b38c005cc74ddddb094438fc792d693624283382358987fe71ebd3823059d7f806829b963831041002dc3
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\00000000.res
- Size 136B
- SHA256 7512b639ec234482dfd27d7a892aa9ec6dd920850733306a17d8ddb109589a6d
- MD5 734c3c84bd24834e2183adafb227f890
- SHA1 3ba7ff60b660e846ae5550966ea3fcc192565400
- SHA512 ad62357fe384174e387a60670ad623812304975deb48039b2908762337978b72457cf628e69132a2a8ef0ad5e3941ead3303707cb2ae5edaaeeb939db7171b11
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\00000000.res
- Size 136B
- SHA256 fa8e5bde8d79454c40d189a4fb7e2248cd41354c77fd97ac3bc88796fdfe44ff
- MD5 4a8f66ba50435a1f37e9898634cb0e53
- SHA1 5d296a3f0188a8d6c0d1b3537c90a69c1a34336d
- SHA512 167506375016fe7e6008ac5ef76492750bb35aba33a1a88054e583fbf5c21453b53cd668d0700929185c4228407551beb434c6a6401d80382a87a41f3a15820a
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\00000000.res
- Size 136B
- SHA256 da2fc726303968eea31bccb5ca1af56e6e6ca05dc605ab739e87c4c36425dd91
- MD5 575713e76fedeb19042a8094046c681a
- SHA1 47484ad6443c9bd26b0b96ab2c3b07e92041eaea
- SHA512 b3a8978162823ff2eb3991d3dfb16d751d8e15c4922db2f1c9bd63018261df46893bf585a5567527a88c6ff4b65438c35d982bd1e587ba4a09131291afc64572
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\96311722763097.bat
- Size 336B
- SHA256 73872a89440a2cba9d22bf4961c3d499ea2c72979c30c455f942374292fedadc
- MD5 3540e056349c6972905dc9706cd49418
- SHA1 492c20442d34d45a6d6790c720349b11ec591cde
- SHA512 c949d147100aef59e382c03abf7b162ae62a4d43456eebd730fbedcf5f95f5e1a24f6e349690d52d75331878a6ee8f6b88a7162ee9cf2a49e142196b12d0133c
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\c.vbs
- Size 219B
- SHA256 0fb5039a2fe7e90cdf3f22140d7f2103f94689b15609efe0edcc8430dd772fc1
- MD5 5f6d40ca3c34b470113ed04d06a88ff4
- SHA1 50629e7211ae43e32060686d6be17ebd492fd7aa
- SHA512 4d4aa1abd2c9183202fd3f0a65b37f07ee0166ba6561f094c13c8ea59752c7bdd960e37c49583746d4464bc3b1dc0b63a1fe36a37ce7e5709cd76ed433befe35
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\c.wry
- Size 628B
- SHA256 d03b682cf0e537af7aa35ecbc22035390138943a9ef2a0d25a623e8a518597db
- MD5 67ce07ce711254bc077d4929b7713c95
- SHA1 0b8ee166f3127aeaa85b701447dceb397c4b9af3
- SHA512 0095971e35752301787ecf361ed8d694d3ae0e342adc4f4c6e9155e43c883b838b9dd3611af73730e05a144c5058721aaed77c6b58ecfb2db911360ee2ccdc10
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\m.wry
- Size 42KB
- SHA256 402046ada270528c9ac38bbfa0152836fe30fb8e12192354e53b8397421430d9
- MD5 980b08bac152aff3f9b0136b616affa5
- SHA1 2a9c9601ea038f790cc29379c79407356a3d25a3
- SHA512 100cda1f795781042b012498afd783fd6ff03b0068dbd07b2c2e163cd95e6c6e00755ce16b02b017693c9febc149ed02df9df9b607e2b9cca4b07e5bd420f496
- SSDEEP 384:S9sLTK3SWTsPzy3EFejoJQBO21z4oCTeo75Y3kmA31dv61QyU:S9s3mjoJb21zZrS14I
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\u.wry
- Size 236KB
- SHA256 78e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df
- MD5 cf1416074cd7791ab80a18f9e7e219d9
- SHA1 276d2ec82c518d887a8a3608e51c56fa28716ded
- SHA512 0bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5
- SSDEEP 3072:KeJJ0eIVAnbWOECR+uJ/0EJzBelG4t1nXFnQamKNQHFZde5tHEGaa:bqrVOEgZJcYelG4tQamKN2ex
- MD5 SHA1 SHA512 SSDEEP