wannacry | be22645c61949ad6a077373a7d6cd85e3fae44315632f161adc4c99d5a8e6844

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

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General

Target

NexusLoader.exe
Size

224KB
MD5

5c7fb0927db37372da25f270708103a2
SHA1

120ed9279d85cbfa56e5b7779ffa7162074f7a29
SHA256

be22645c61949ad6a077373a7d6cd85e3fae44315632f161adc4c99d5a8e6844
SHA512

a15f97fad744ccf5f620e5aabb81f48507327b898a9aa4287051464019e0f89224c484e9691812e166471af9beaddcfc3deb2ba878658761f4800663beef7206
SSDEEP

3072:Y059femWRwTs/dbelj0X8/j84pcRXPlU3Upt3or4H84lK8PtpLzLsR/EfcZ:+5RwTs/dSXj84mRXPemxdBlPvLzLeZ

Score

10^/10

wannacry defense_evasion discovery execution impact persistence ransomware spyware stealer worm

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\!Please Read Me!.txt

Family

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.
ransomware worm wannacry
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

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.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

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

ransomware

Defacement

T1491

Modify Registry

T1112

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 Information Discovery
T1082

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.

discovery

System Language Discovery

T1614.001

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

evasion

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.
ransomware

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.exe
  C:\Windows\system32\cmd.exe /c 96311722763097.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4688
- - C:\Windows\SysWOW64\cscript.exe
    cscript //nologo c.vbs
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4044
- C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
  !WannaDecryptor!.exe f
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2516
- C:\Windows\SysWOW64\taskkill.exe
  taskkill /f /im MSExchange*
  2⤵
  - System Location Discovery: System Language Discovery
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:952
- C:\Windows\SysWOW64\taskkill.exe
  taskkill /f /im Microsoft.Exchange.*
  2⤵
  - System Location Discovery: System Language Discovery
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:4284
- C:\Windows\SysWOW64\taskkill.exe
  taskkill /f /im sqlserver.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:3540
- C:\Windows\SysWOW64\taskkill.exe
  taskkill /f /im sqlwriter.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:2492
- C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
  !WannaDecryptor!.exe c
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3428
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c start /b !WannaDecryptor!.exe v
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5088
- - C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
    !WannaDecryptor!.exe v
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:404
  - - C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:3528
    - - C:\Windows\SysWOW64\Wbem\WMIC.exe
        
        wmic shadowcopy delete
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:3440
- C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
  !WannaDecryptor!.exe
  2⤵
  - Executes dropped EXE
  - Sets desktop wallpaper using registry
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:1160

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:8
1⤵
PID:2100

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2108

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Defacement

T1491

Inhibit System Recovery

T1490

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Downloads

C:\Users\Admin\AppData\Local\Temp\!Please Read Me!.txt

Filesize
797B

MD5
afa18cf4aa2660392111763fb93a8c3d

SHA1
c219a3654a5f41ce535a09f2a188a464c3f5baf5

SHA256
227082c719fd4394c1f2311a0877d8a302c5b092bcc49f853a5cf3d2945f42b0

SHA512
4161f250d59b7d4d4a6c4f16639d66d21b2a9606de956d22ec00bedb006643fedbbb8e4cde9f6c0c977285918648314883ca91f3442d1125593bf2605f2d5c6b

Download Submit
C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe.lnk

Filesize
1KB

MD5
68ca323d7a72ab75d1d213890e69b286

SHA1
bd86649956c463bb8fbfbdbc1a86d91c900d5d73

SHA256
f1ab4ea23a9f3168c9d9bad224f2350fcb3a23a4e30002e8545f65b96ace07b5

SHA512
7d69d47976176d3f5d028390e790603ff37108315a2b38c005cc74ddddb094438fc792d693624283382358987fe71ebd3823059d7f806829b963831041002dc3

Download Submit
C:\Users\Admin\AppData\Local\Temp\00000000.res

Filesize
136B

MD5
734c3c84bd24834e2183adafb227f890

SHA1
3ba7ff60b660e846ae5550966ea3fcc192565400

SHA256
7512b639ec234482dfd27d7a892aa9ec6dd920850733306a17d8ddb109589a6d

SHA512
ad62357fe384174e387a60670ad623812304975deb48039b2908762337978b72457cf628e69132a2a8ef0ad5e3941ead3303707cb2ae5edaaeeb939db7171b11

Download Submit
C:\Users\Admin\AppData\Local\Temp\00000000.res

Filesize
136B

MD5
4a8f66ba50435a1f37e9898634cb0e53

SHA1
5d296a3f0188a8d6c0d1b3537c90a69c1a34336d

SHA256
fa8e5bde8d79454c40d189a4fb7e2248cd41354c77fd97ac3bc88796fdfe44ff

SHA512
167506375016fe7e6008ac5ef76492750bb35aba33a1a88054e583fbf5c21453b53cd668d0700929185c4228407551beb434c6a6401d80382a87a41f3a15820a

Download Submit
C:\Users\Admin\AppData\Local\Temp\00000000.res

Filesize
136B

MD5
575713e76fedeb19042a8094046c681a

SHA1
47484ad6443c9bd26b0b96ab2c3b07e92041eaea

SHA256
da2fc726303968eea31bccb5ca1af56e6e6ca05dc605ab739e87c4c36425dd91

SHA512
b3a8978162823ff2eb3991d3dfb16d751d8e15c4922db2f1c9bd63018261df46893bf585a5567527a88c6ff4b65438c35d982bd1e587ba4a09131291afc64572

Download Submit
C:\Users\Admin\AppData\Local\Temp\96311722763097.bat

Filesize
336B

MD5
3540e056349c6972905dc9706cd49418

SHA1
492c20442d34d45a6d6790c720349b11ec591cde

SHA256
73872a89440a2cba9d22bf4961c3d499ea2c72979c30c455f942374292fedadc

SHA512
c949d147100aef59e382c03abf7b162ae62a4d43456eebd730fbedcf5f95f5e1a24f6e349690d52d75331878a6ee8f6b88a7162ee9cf2a49e142196b12d0133c

Download Submit
C:\Users\Admin\AppData\Local\Temp\c.vbs

Filesize
219B

MD5
5f6d40ca3c34b470113ed04d06a88ff4

SHA1
50629e7211ae43e32060686d6be17ebd492fd7aa

SHA256
0fb5039a2fe7e90cdf3f22140d7f2103f94689b15609efe0edcc8430dd772fc1

SHA512
4d4aa1abd2c9183202fd3f0a65b37f07ee0166ba6561f094c13c8ea59752c7bdd960e37c49583746d4464bc3b1dc0b63a1fe36a37ce7e5709cd76ed433befe35

Download Submit
C:\Users\Admin\AppData\Local\Temp\c.wry

Filesize
628B

MD5
67ce07ce711254bc077d4929b7713c95

SHA1
0b8ee166f3127aeaa85b701447dceb397c4b9af3

SHA256
d03b682cf0e537af7aa35ecbc22035390138943a9ef2a0d25a623e8a518597db

SHA512
0095971e35752301787ecf361ed8d694d3ae0e342adc4f4c6e9155e43c883b838b9dd3611af73730e05a144c5058721aaed77c6b58ecfb2db911360ee2ccdc10

Download Submit
C:\Users\Admin\AppData\Local\Temp\m.wry

Filesize
42KB

MD5
980b08bac152aff3f9b0136b616affa5

SHA1
2a9c9601ea038f790cc29379c79407356a3d25a3

SHA256
402046ada270528c9ac38bbfa0152836fe30fb8e12192354e53b8397421430d9

SHA512
100cda1f795781042b012498afd783fd6ff03b0068dbd07b2c2e163cd95e6c6e00755ce16b02b017693c9febc149ed02df9df9b607e2b9cca4b07e5bd420f496

Download Submit
C:\Users\Admin\AppData\Local\Temp\u.wry

Filesize
236KB

MD5
cf1416074cd7791ab80a18f9e7e219d9

SHA1
276d2ec82c518d887a8a3608e51c56fa28716ded

SHA256
78e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df

SHA512
0bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5

Download Submit
memory/2896-6-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads