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
147s
max time network
137s
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 01:55

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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\~SDE842.tmp	yourmom.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SDE859.tmp	yourmom.exe

Executes dropped EXE 4 IoCs

pid	Process
3116	!WannaDecryptor!.exe
2356	!WannaDecryptor!.exe
4500	!WannaDecryptor!.exe
2656	!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-1-5-21-656926755-4116854191-210765258-1000\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	cscript.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	!WannaDecryptor!.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	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	!WannaDecryptor!.exe

Kills process with taskkill 4 IoCs

evasion

pid	Process
4028	taskkill.exe
3496	taskkill.exe
1544	taskkill.exe
4852	taskkill.exe

Suspicious use of AdjustPrivilegeToken 49 IoCs

description	pid	Process
Token: SeDebugPrivilege	1544	taskkill.exe
Token: SeDebugPrivilege	4852	taskkill.exe
Token: SeDebugPrivilege	4028	taskkill.exe
Token: SeDebugPrivilege	3496	taskkill.exe
Token: SeIncreaseQuotaPrivilege	1036	WMIC.exe
Token: SeSecurityPrivilege	1036	WMIC.exe
Token: SeTakeOwnershipPrivilege	1036	WMIC.exe
Token: SeLoadDriverPrivilege	1036	WMIC.exe
Token: SeSystemProfilePrivilege	1036	WMIC.exe
Token: SeSystemtimePrivilege	1036	WMIC.exe
Token: SeProfSingleProcessPrivilege	1036	WMIC.exe
Token: SeIncBasePriorityPrivilege	1036	WMIC.exe
Token: SeCreatePagefilePrivilege	1036	WMIC.exe
Token: SeBackupPrivilege	1036	WMIC.exe
Token: SeRestorePrivilege	1036	WMIC.exe
Token: SeShutdownPrivilege	1036	WMIC.exe
Token: SeDebugPrivilege	1036	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1036	WMIC.exe
Token: SeRemoteShutdownPrivilege	1036	WMIC.exe
Token: SeUndockPrivilege	1036	WMIC.exe
Token: SeManageVolumePrivilege	1036	WMIC.exe
Token: 33	1036	WMIC.exe
Token: 34	1036	WMIC.exe
Token: 35	1036	WMIC.exe
Token: 36	1036	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1036	WMIC.exe
Token: SeSecurityPrivilege	1036	WMIC.exe
Token: SeTakeOwnershipPrivilege	1036	WMIC.exe
Token: SeLoadDriverPrivilege	1036	WMIC.exe
Token: SeSystemProfilePrivilege	1036	WMIC.exe
Token: SeSystemtimePrivilege	1036	WMIC.exe
Token: SeProfSingleProcessPrivilege	1036	WMIC.exe
Token: SeIncBasePriorityPrivilege	1036	WMIC.exe
Token: SeCreatePagefilePrivilege	1036	WMIC.exe
Token: SeBackupPrivilege	1036	WMIC.exe
Token: SeRestorePrivilege	1036	WMIC.exe
Token: SeShutdownPrivilege	1036	WMIC.exe
Token: SeDebugPrivilege	1036	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1036	WMIC.exe
Token: SeRemoteShutdownPrivilege	1036	WMIC.exe
Token: SeUndockPrivilege	1036	WMIC.exe
Token: SeManageVolumePrivilege	1036	WMIC.exe
Token: 33	1036	WMIC.exe
Token: 34	1036	WMIC.exe
Token: 35	1036	WMIC.exe
Token: 36	1036	WMIC.exe
Token: SeBackupPrivilege	5004	vssvc.exe
Token: SeRestorePrivilege	5004	vssvc.exe
Token: SeAuditPrivilege	5004	vssvc.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
3116	!WannaDecryptor!.exe
3116	!WannaDecryptor!.exe
2356	!WannaDecryptor!.exe
2356	!WannaDecryptor!.exe
4500	!WannaDecryptor!.exe
4500	!WannaDecryptor!.exe
2656	!WannaDecryptor!.exe
2656	!WannaDecryptor!.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 4600	2340	yourmom.exe	86
PID 2340 wrote to memory of 4600	2340	yourmom.exe	86
PID 2340 wrote to memory of 4600	2340	yourmom.exe	86
PID 4600 wrote to memory of 3344	4600	cmd.exe	89
PID 4600 wrote to memory of 3344	4600	cmd.exe	89
PID 4600 wrote to memory of 3344	4600	cmd.exe	89
PID 2340 wrote to memory of 3116	2340	yourmom.exe	91
PID 2340 wrote to memory of 3116	2340	yourmom.exe	91
PID 2340 wrote to memory of 3116	2340	yourmom.exe	91
PID 2340 wrote to memory of 1544	2340	yourmom.exe	92
PID 2340 wrote to memory of 1544	2340	yourmom.exe	92
PID 2340 wrote to memory of 1544	2340	yourmom.exe	92
PID 2340 wrote to memory of 3496	2340	yourmom.exe	93
PID 2340 wrote to memory of 3496	2340	yourmom.exe	93
PID 2340 wrote to memory of 3496	2340	yourmom.exe	93
PID 2340 wrote to memory of 4028	2340	yourmom.exe	94
PID 2340 wrote to memory of 4028	2340	yourmom.exe	94
PID 2340 wrote to memory of 4028	2340	yourmom.exe	94
PID 2340 wrote to memory of 4852	2340	yourmom.exe	95
PID 2340 wrote to memory of 4852	2340	yourmom.exe	95
PID 2340 wrote to memory of 4852	2340	yourmom.exe	95
PID 2340 wrote to memory of 2356	2340	yourmom.exe	106
PID 2340 wrote to memory of 2356	2340	yourmom.exe	106
PID 2340 wrote to memory of 2356	2340	yourmom.exe	106
PID 2340 wrote to memory of 900	2340	yourmom.exe	107
PID 2340 wrote to memory of 900	2340	yourmom.exe	107
PID 2340 wrote to memory of 900	2340	yourmom.exe	107
PID 900 wrote to memory of 4500	900	cmd.exe	109
PID 900 wrote to memory of 4500	900	cmd.exe	109
PID 900 wrote to memory of 4500	900	cmd.exe	109
PID 2340 wrote to memory of 2656	2340	yourmom.exe	112
PID 2340 wrote to memory of 2656	2340	yourmom.exe	112
PID 2340 wrote to memory of 2656	2340	yourmom.exe	112
PID 4500 wrote to memory of 4840	4500	!WannaDecryptor!.exe	114
PID 4500 wrote to memory of 4840	4500	!WannaDecryptor!.exe	114
PID 4500 wrote to memory of 4840	4500	!WannaDecryptor!.exe	114
PID 4840 wrote to memory of 1036	4840	cmd.exe	116
PID 4840 wrote to memory of 1036	4840	cmd.exe	116
PID 4840 wrote to memory of 1036	4840	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:2340
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c 68561725242129.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4600
- - C:\Windows\SysWOW64\cscript.exe
    cscript //nologo c.vbs
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3344
- 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:3116
- 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:1544
- 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:3496
- 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:4028
- 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:4852
- 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:2356
- 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:900
- - 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:4500
  - - 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:4840
    - - C:\Windows\SysWOW64\Wbem\WMIC.exe
        
        wmic shadowcopy delete
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:1036
- 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:2656

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5004

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
2c9b56b7fadd57ee08afec19808e826c

SHA1
d1f5b394d45e86802c1550a9ff9ee52728dc2fc4

SHA256
566ae63039c7857145daf1770a7b57f1e953877a886e30d15cf23dfd2c9108f8

SHA512
60a00d513d96f0450e2da4f5096293abb0fdcb482eb65b003381d2523e15c7d3bc3004cb9698d0af6d78b0e55361b42b92fa832f6a0e71b215d5d649348912b1

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

Filesize
136B

MD5
9dd06e2901b6a801e5023834dece177b

SHA1
a12490beb9569f7052d66e1e91d1e685e1b65f49

SHA256
9d307c4ab18f5bdea4d9747f2cf50150bffe448a38b7b5d62b9266624cdd9c5e

SHA512
61ef0f18dd25874586986b55d9853568d12ccf5955c87679ac529043e6e92333e70b29256bde836f2352bb4d0ee717aa551fa7fe5168139ef748d42db870064e

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

Filesize
136B

MD5
6a0e2468854d76ff6bc71c9c32eeaa5b

SHA1
7c175ef8ab0930557cbd31b8ee713a469df1e262

SHA256
042ab53956eb8a7859a94a322aa0495b998239c2cffb9ef50f2d542816d30468

SHA512
62201a9520c153b5b0e674bb2edc9ff7585be9e92a5b3a840169b0b337be79b71e6a8662c64f8c8eef99d682c0897280855568e4d96f9c04399a4f54f2279191

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

Filesize
136B

MD5
1debab222a151da239eec9178656f833

SHA1
7984a2051363b4114efc83ba552c9274ec89333d

SHA256
4f00cb86702786a5739fb23553ec61f8d22cb3d22147d387b0c9d5363216db39

SHA512
eb8aff3aae21677a6b7e2af31efc2601b7e0380b3c70230f9614580abe2797ac960052989bf72555d8bca8a120b379895123006c8322ffb0312f990193edc817

Download Submit
C:\Users\Admin\AppData\Local\Temp\68561725242129.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
7b7d56c76373cefa0d58f710534e3f76

SHA1
4400e4a1be9a0c0617c433faaf100c73737093b8

SHA256
e169423036c6b8c3f5d6e85a81d46b9120b52536b0829e1c9124b74e114dde40

SHA512
eb7851f5f2c99aa9709f3c5cf4a9c8c36ef1801a62a121573e1d320f6b189220e9fce0c0e18edf07aa868af09733dc54ec0ad52dab54e3e11b40491a450bfb09

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/2340-6-0x0000000010000000-0x0000000010012000-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