wannacry | be22645c61949ad6a077373a7d6cd85e3fae44315632f161adc4c99d5a8e6844

Resubmissions

02-09-2024 01:55

240902-cb6e8azaqf 10

02-09-2024 01:49

240902-b8vjjsybjl 10

02-09-2024 00:25

240902-aqws8awcrr 10

Analysis

max time kernel
146s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02-09-2024 01:49

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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\~SDBBD5.tmp	yourmom.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SDBBFB.tmp	yourmom.exe

Executes dropped EXE 4 IoCs

pid	Process
1416	!WannaDecryptor!.exe
228	!WannaDecryptor!.exe
2744	!WannaDecryptor!.exe
3904	!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-1-5-21-1302416131-1437503476-2806442725-1000\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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WMIC.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	yourmom.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cscript.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	!WannaDecryptor!.exe

Kills process with taskkill 4 IoCs

evasion

pid	Process
3460	taskkill.exe
800	taskkill.exe
3488	taskkill.exe
2500	taskkill.exe

Suspicious use of AdjustPrivilegeToken 49 IoCs

description	pid	Process
Token: SeDebugPrivilege	800	taskkill.exe
Token: SeDebugPrivilege	3460	taskkill.exe
Token: SeDebugPrivilege	3488	taskkill.exe
Token: SeDebugPrivilege	2500	taskkill.exe
Token: SeIncreaseQuotaPrivilege	3000	WMIC.exe
Token: SeSecurityPrivilege	3000	WMIC.exe
Token: SeTakeOwnershipPrivilege	3000	WMIC.exe
Token: SeLoadDriverPrivilege	3000	WMIC.exe
Token: SeSystemProfilePrivilege	3000	WMIC.exe
Token: SeSystemtimePrivilege	3000	WMIC.exe
Token: SeProfSingleProcessPrivilege	3000	WMIC.exe
Token: SeIncBasePriorityPrivilege	3000	WMIC.exe
Token: SeCreatePagefilePrivilege	3000	WMIC.exe
Token: SeBackupPrivilege	3000	WMIC.exe
Token: SeRestorePrivilege	3000	WMIC.exe
Token: SeShutdownPrivilege	3000	WMIC.exe
Token: SeDebugPrivilege	3000	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3000	WMIC.exe
Token: SeRemoteShutdownPrivilege	3000	WMIC.exe
Token: SeUndockPrivilege	3000	WMIC.exe
Token: SeManageVolumePrivilege	3000	WMIC.exe
Token: 33	3000	WMIC.exe
Token: 34	3000	WMIC.exe
Token: 35	3000	WMIC.exe
Token: 36	3000	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3000	WMIC.exe
Token: SeSecurityPrivilege	3000	WMIC.exe
Token: SeTakeOwnershipPrivilege	3000	WMIC.exe
Token: SeLoadDriverPrivilege	3000	WMIC.exe
Token: SeSystemProfilePrivilege	3000	WMIC.exe
Token: SeSystemtimePrivilege	3000	WMIC.exe
Token: SeProfSingleProcessPrivilege	3000	WMIC.exe
Token: SeIncBasePriorityPrivilege	3000	WMIC.exe
Token: SeCreatePagefilePrivilege	3000	WMIC.exe
Token: SeBackupPrivilege	3000	WMIC.exe
Token: SeRestorePrivilege	3000	WMIC.exe
Token: SeShutdownPrivilege	3000	WMIC.exe
Token: SeDebugPrivilege	3000	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3000	WMIC.exe
Token: SeRemoteShutdownPrivilege	3000	WMIC.exe
Token: SeUndockPrivilege	3000	WMIC.exe
Token: SeManageVolumePrivilege	3000	WMIC.exe
Token: 33	3000	WMIC.exe
Token: 34	3000	WMIC.exe
Token: 35	3000	WMIC.exe
Token: 36	3000	WMIC.exe
Token: SeBackupPrivilege	1364	vssvc.exe
Token: SeRestorePrivilege	1364	vssvc.exe
Token: SeAuditPrivilege	1364	vssvc.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3904	!WannaDecryptor!.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
1416	!WannaDecryptor!.exe
1416	!WannaDecryptor!.exe
228	!WannaDecryptor!.exe
228	!WannaDecryptor!.exe
2744	!WannaDecryptor!.exe
2744	!WannaDecryptor!.exe
3904	!WannaDecryptor!.exe
3904	!WannaDecryptor!.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1860 wrote to memory of 976	1860	yourmom.exe	83
PID 1860 wrote to memory of 976	1860	yourmom.exe	83
PID 1860 wrote to memory of 976	1860	yourmom.exe	83
PID 976 wrote to memory of 3188	976	cmd.exe	86
PID 976 wrote to memory of 3188	976	cmd.exe	86
PID 976 wrote to memory of 3188	976	cmd.exe	86
PID 1860 wrote to memory of 1416	1860	yourmom.exe	91
PID 1860 wrote to memory of 1416	1860	yourmom.exe	91
PID 1860 wrote to memory of 1416	1860	yourmom.exe	91
PID 1860 wrote to memory of 3460	1860	yourmom.exe	92
PID 1860 wrote to memory of 3460	1860	yourmom.exe	92
PID 1860 wrote to memory of 3460	1860	yourmom.exe	92
PID 1860 wrote to memory of 800	1860	yourmom.exe	93
PID 1860 wrote to memory of 800	1860	yourmom.exe	93
PID 1860 wrote to memory of 800	1860	yourmom.exe	93
PID 1860 wrote to memory of 3488	1860	yourmom.exe	94
PID 1860 wrote to memory of 3488	1860	yourmom.exe	94
PID 1860 wrote to memory of 3488	1860	yourmom.exe	94
PID 1860 wrote to memory of 2500	1860	yourmom.exe	95
PID 1860 wrote to memory of 2500	1860	yourmom.exe	95
PID 1860 wrote to memory of 2500	1860	yourmom.exe	95
PID 1860 wrote to memory of 228	1860	yourmom.exe	108
PID 1860 wrote to memory of 228	1860	yourmom.exe	108
PID 1860 wrote to memory of 228	1860	yourmom.exe	108
PID 1860 wrote to memory of 1808	1860	yourmom.exe	109
PID 1860 wrote to memory of 1808	1860	yourmom.exe	109
PID 1860 wrote to memory of 1808	1860	yourmom.exe	109
PID 1808 wrote to memory of 2744	1808	cmd.exe	111
PID 1808 wrote to memory of 2744	1808	cmd.exe	111
PID 1808 wrote to memory of 2744	1808	cmd.exe	111
PID 1860 wrote to memory of 3904	1860	yourmom.exe	113
PID 1860 wrote to memory of 3904	1860	yourmom.exe	113
PID 1860 wrote to memory of 3904	1860	yourmom.exe	113
PID 2744 wrote to memory of 4204	2744	!WannaDecryptor!.exe	114
PID 2744 wrote to memory of 4204	2744	!WannaDecryptor!.exe	114
PID 2744 wrote to memory of 4204	2744	!WannaDecryptor!.exe	114
PID 4204 wrote to memory of 3000	4204	cmd.exe	116
PID 4204 wrote to memory of 3000	4204	cmd.exe	116
PID 4204 wrote to memory of 3000	4204	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\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:1860
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c 39571725241768.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:976
- - C:\Windows\SysWOW64\cscript.exe
    cscript //nologo c.vbs
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3188
- 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:1416
- 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:3460
- 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:800
- 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:3488
- 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:2500
- 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:228
- 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:1808
- - 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:2744
  - - 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:4204
    - - C:\Windows\SysWOW64\Wbem\WMIC.exe
        
        wmic shadowcopy delete
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:3000
- 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 FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  PID:3904

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1364

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
6d40cf46f5d77df7c2c8753b908cf81c

SHA1
6119d60dddad78dffd5ebc1cbf8d58aaa4fc9e3d

SHA256
eb9765349620cb7d928916a730450f928cb15427af1678daefdc173454b4ce63

SHA512
9af3b3c16314943ed1137b518278b1bee10331d9d4008a7fdc4bba567504c78c65ab90fe5846d10b94926c8f9df046e29cc6af8bd121e75ff9adab791c8b772b

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

Filesize
136B

MD5
b84116609f67dc02d041dd2860af35c9

SHA1
071f67a400af010b290874fe9f0d9a1d0c928517

SHA256
422c52d1b2d44793daa610c1d366e594f884b6a0931861de9f346aedeef6661b

SHA512
f22603abb4596484da7b414aab557e72b06a5731ae0d3d87d60f3804344e14a12d5e221246224c1e900df78e7725f741722f875bbdea19c845cd553477bd7015

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

Filesize
136B

MD5
df13a82e6c80a64841dc06c9c9280fb5

SHA1
31459e733917c8cc3a89e3e9fc9f622e712a427a

SHA256
e1d46d2d5de3826d6bae28d007d3b7c2f03edec1b5438b50ca18dfdeb8235587

SHA512
0b7350152bceab595b33b88e6bd72d90c53222065a30773e4ea0e7aa86d910ce06b98b39455d3389cee1c99181186e004016e8ef525d457d2460729fd275b898

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

Filesize
136B

MD5
5a5071a617a99bcfbe3953a04cf71367

SHA1
e0d776ea71dd488a181f31e8839fbd85517d3f94

SHA256
5826f249a5ad311806296d48fe77312cfddab09e4c9ff7c04cb1bf6dabcc850d

SHA512
f44e6419efa45ff7192ecfd9b34017dd1a442e622beb73284a6c900a8a926c20f96d8a65e3833099fc5a45fbbfbf11e93b82fc87cf654e259ede38442c1067b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\39571725241768.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
087843e76fd8a3ad855cd3f1229cb869

SHA1
f2eb7742e3a325bfb8b5d6592c67ffe1896f450f

SHA256
eca74329a77624658416a9617be48393822e0f734621009be80f1fa261135946

SHA512
7f3b3d1f4e4c5599b0fd9f1f9ee02bf83033bacea66ea7966b4c09677adfe74ed8e8a635aa2176b98a9afeeb7939363b608360880ae104d5789f3f67a16805c5

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/1860-7-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads