wannacry | be22645c61949ad6a077373a7d6cd85e3fae44315632f161adc4c99d5a8e6844

Analysis

max time kernel
27s
max time network
18s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
30-08-2024 00:08

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General

Target

yourmom.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\~SDD0F.tmp	yourmom.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SDD26.tmp	yourmom.exe

Executes dropped EXE 4 IoCs

pid	Process
4932	!WannaDecryptor!.exe
4504	!WannaDecryptor!.exe
3652	!WannaDecryptor!.exe
1168	!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\\yourmom.exe\" /r"	yourmom.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-1-5-21-2227988167-2813779459-4240799794-1000\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	cmd.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	!WannaDecryptor!.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	!WannaDecryptor!.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	WMIC.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yourmom.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Kills process with taskkill 4 IoCs

evasion

pid	Process
2000	taskkill.exe
1944	taskkill.exe
3244	taskkill.exe
2784	taskkill.exe

Suspicious use of AdjustPrivilegeToken 49 IoCs

description	pid	Process
Token: SeDebugPrivilege	2784	taskkill.exe
Token: SeDebugPrivilege	1944	taskkill.exe
Token: SeDebugPrivilege	3244	taskkill.exe
Token: SeDebugPrivilege	2000	taskkill.exe
Token: SeIncreaseQuotaPrivilege	3528	WMIC.exe
Token: SeSecurityPrivilege	3528	WMIC.exe
Token: SeTakeOwnershipPrivilege	3528	WMIC.exe
Token: SeLoadDriverPrivilege	3528	WMIC.exe
Token: SeSystemProfilePrivilege	3528	WMIC.exe
Token: SeSystemtimePrivilege	3528	WMIC.exe
Token: SeProfSingleProcessPrivilege	3528	WMIC.exe
Token: SeIncBasePriorityPrivilege	3528	WMIC.exe
Token: SeCreatePagefilePrivilege	3528	WMIC.exe
Token: SeBackupPrivilege	3528	WMIC.exe
Token: SeRestorePrivilege	3528	WMIC.exe
Token: SeShutdownPrivilege	3528	WMIC.exe
Token: SeDebugPrivilege	3528	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3528	WMIC.exe
Token: SeRemoteShutdownPrivilege	3528	WMIC.exe
Token: SeUndockPrivilege	3528	WMIC.exe
Token: SeManageVolumePrivilege	3528	WMIC.exe
Token: 33	3528	WMIC.exe
Token: 34	3528	WMIC.exe
Token: 35	3528	WMIC.exe
Token: 36	3528	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3528	WMIC.exe
Token: SeSecurityPrivilege	3528	WMIC.exe
Token: SeTakeOwnershipPrivilege	3528	WMIC.exe
Token: SeLoadDriverPrivilege	3528	WMIC.exe
Token: SeSystemProfilePrivilege	3528	WMIC.exe
Token: SeSystemtimePrivilege	3528	WMIC.exe
Token: SeProfSingleProcessPrivilege	3528	WMIC.exe
Token: SeIncBasePriorityPrivilege	3528	WMIC.exe
Token: SeCreatePagefilePrivilege	3528	WMIC.exe
Token: SeBackupPrivilege	3528	WMIC.exe
Token: SeRestorePrivilege	3528	WMIC.exe
Token: SeShutdownPrivilege	3528	WMIC.exe
Token: SeDebugPrivilege	3528	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3528	WMIC.exe
Token: SeRemoteShutdownPrivilege	3528	WMIC.exe
Token: SeUndockPrivilege	3528	WMIC.exe
Token: SeManageVolumePrivilege	3528	WMIC.exe
Token: 33	3528	WMIC.exe
Token: 34	3528	WMIC.exe
Token: 35	3528	WMIC.exe
Token: 36	3528	WMIC.exe
Token: SeBackupPrivilege	4856	vssvc.exe
Token: SeRestorePrivilege	4856	vssvc.exe
Token: SeAuditPrivilege	4856	vssvc.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
4932	!WannaDecryptor!.exe
4932	!WannaDecryptor!.exe
4504	!WannaDecryptor!.exe
4504	!WannaDecryptor!.exe
3652	!WannaDecryptor!.exe
3652	!WannaDecryptor!.exe
1168	!WannaDecryptor!.exe
1168	!WannaDecryptor!.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 3944 wrote to memory of 2588	3944	yourmom.exe	80
PID 3944 wrote to memory of 2588	3944	yourmom.exe	80
PID 3944 wrote to memory of 2588	3944	yourmom.exe	80
PID 2588 wrote to memory of 1872	2588	cmd.exe	82
PID 2588 wrote to memory of 1872	2588	cmd.exe	82
PID 2588 wrote to memory of 1872	2588	cmd.exe	82
PID 3944 wrote to memory of 4932	3944	yourmom.exe	84
PID 3944 wrote to memory of 4932	3944	yourmom.exe	84
PID 3944 wrote to memory of 4932	3944	yourmom.exe	84
PID 3944 wrote to memory of 1944	3944	yourmom.exe	86
PID 3944 wrote to memory of 1944	3944	yourmom.exe	86
PID 3944 wrote to memory of 1944	3944	yourmom.exe	86
PID 3944 wrote to memory of 2000	3944	yourmom.exe	87
PID 3944 wrote to memory of 2000	3944	yourmom.exe	87
PID 3944 wrote to memory of 2000	3944	yourmom.exe	87
PID 3944 wrote to memory of 2784	3944	yourmom.exe	88
PID 3944 wrote to memory of 2784	3944	yourmom.exe	88
PID 3944 wrote to memory of 2784	3944	yourmom.exe	88
PID 3944 wrote to memory of 3244	3944	yourmom.exe	89
PID 3944 wrote to memory of 3244	3944	yourmom.exe	89
PID 3944 wrote to memory of 3244	3944	yourmom.exe	89
PID 3944 wrote to memory of 4504	3944	yourmom.exe	98
PID 3944 wrote to memory of 4504	3944	yourmom.exe	98
PID 3944 wrote to memory of 4504	3944	yourmom.exe	98
PID 3944 wrote to memory of 244	3944	yourmom.exe	99
PID 3944 wrote to memory of 244	3944	yourmom.exe	99
PID 3944 wrote to memory of 244	3944	yourmom.exe	99
PID 244 wrote to memory of 3652	244	cmd.exe	101
PID 244 wrote to memory of 3652	244	cmd.exe	101
PID 244 wrote to memory of 3652	244	cmd.exe	101
PID 3944 wrote to memory of 1168	3944	yourmom.exe	102
PID 3944 wrote to memory of 1168	3944	yourmom.exe	102
PID 3944 wrote to memory of 1168	3944	yourmom.exe	102
PID 3652 wrote to memory of 4676	3652	!WannaDecryptor!.exe	104
PID 3652 wrote to memory of 4676	3652	!WannaDecryptor!.exe	104
PID 3652 wrote to memory of 4676	3652	!WannaDecryptor!.exe	104
PID 4676 wrote to memory of 3528	4676	cmd.exe	106
PID 4676 wrote to memory of 3528	4676	cmd.exe	106
PID 4676 wrote to memory of 3528	4676	cmd.exe	106

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\yourmom.exe
"C:\Users\Admin\AppData\Local\Temp\yourmom.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3944
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c 79191724976558.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2588
- - C:\Windows\SysWOW64\cscript.exe
    cscript //nologo c.vbs
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1872
- 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:4932
- 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:1944
- 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:2000
- 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:2784
- 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:3244
- 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:4504
- 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:244
- - 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:3652
  - - 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:4676
    - - C:\Windows\SysWOW64\Wbem\WMIC.exe
        
        wmic shadowcopy delete
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:3528
- 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:1168

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4856

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
4a46ee4d2ad27b3459f6eb04242a7ffc

SHA1
e64282367be42017f12657ad5c2a390cf8f3e679

SHA256
835becc5c354d2362eefd644066f2565106110af0c4c3b9b478c6615c98ab879

SHA512
e8b088e210427717313c762e3dadd1506610e192bc36df6ac6bfce39845e2174b588d936a8f54a546df3757e5746d2bf5b83c1bb62d9a199dda94bbc9f1defae

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

Filesize
136B

MD5
f90ed41c9af811e0452fb3090b5e539c

SHA1
8a04d97de7b6350c52b68d2aaf56c4fefc7b77b4

SHA256
6d156961f4b2275b334b44627e3eec2e4d1093c09f182db59f6c901ba2bf112d

SHA512
8518d7e9d4b701aaef7e7e2bc3f4017695c4f5ce3e7883986ec38bd3eae3f437671dc70353461c52b9496fb01e06585d0125383aab1e8966ec030b78ba4b2c65

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

Filesize
136B

MD5
f097de8e50e36d843f4bfbbef98eeb14

SHA1
3f4fddbef5ea6e6826e136b8537dff017ee01e73

SHA256
7e533c79e3801fa4f9990c6354774da8edef64427e18c4fd166df8f6c546257c

SHA512
e6135b752c5f942833b40a5ecae58b5612af30bd4ebf483a9d7b72c19e592fd4467da80bb5440c2a1fbf0d66f1d6954025fa6abdfdf584019eab47c0a4de1441

Download Submit
C:\Users\Admin\AppData\Local\Temp\79191724976558.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
a3453d263611e1c6b8d284c740f4f9ec

SHA1
a6a89382c0f78ad081d807e8db3a021e93ecea77

SHA256
90e24f4e2bc410aeb8a6a397ae3d218c273f4470fce29eb2141c40cde8ceafda

SHA512
eb14c23c3d92fbcbec231226d5b41cc497b51e7231de01d8f5a8d1b637fb5593b46d74f293627df7ba03b2845e09b24c76353be0b85847398d2edef06ca7b73c

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/3944-6-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads