wannacry | 1dda7db0c3bc58f1a2bc67b31cb95ad891efe4eef5c6847269cbaea1142280b4

General

Target

2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Size

2.2MB
MD5

dcfa2d9692a946088fd4020314f51e9d
SHA1

2f35b64a0290ce637d8d69e805cfafeb033eca60
SHA256

1dda7db0c3bc58f1a2bc67b31cb95ad891efe4eef5c6847269cbaea1142280b4
SHA512

707920b2148f3857605bfc66457c9fb912fd6282ebb1c640f069e0944a3e720ee4606097bae7dce8a10b3d6d383c452d077a3ce6151fc535ac62d7318253a78f
SSDEEP

49152:QnOQej31sNRx+TSqTdX1HkQo6SAARdhnvn:QKT1+RxcSUDk36SAEdhvn

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3022) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Executes dropped EXE 1 IoCs

pid	Process
1628	tasksche.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\61UXRGTJ.txt	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\TQ350189.txt	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\TQ350189.txt	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Microsoft\Windows\Cookies\61UXRGTJ.txt	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2668	1628	WerFault.exe	31

System Location Discovery: System Language Discovery 1 TTPs 3 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	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0217EB12-0529-4B58-9CCD-AB06BC903E7F}	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0217EB12-0529-4B58-9CCD-AB06BC903E7F}\WpadDecision = "0"	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-ce-0c-55-0c-fb\WpadDecisionReason = "1"	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0217EB12-0529-4B58-9CCD-AB06BC903E7F}\WpadDecisionReason = "1"	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-ce-0c-55-0c-fb\WpadDecision = "0"	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0186000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0217EB12-0529-4B58-9CCD-AB06BC903E7F}\WpadDecisionTime = 30f81e770311db01	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0217EB12-0529-4B58-9CCD-AB06BC903E7F}\26-ce-0c-55-0c-fb	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-ce-0c-55-0c-fb\WpadDecisionTime = 30f81e770311db01	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{0217EB12-0529-4B58-9CCD-AB06BC903E7F}\WpadNetworkName = "Network 2"	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\26-ce-0c-55-0c-fb	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1892 wrote to memory of 1628	1892	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe	31
PID 1892 wrote to memory of 1628	1892	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe	31
PID 1892 wrote to memory of 1628	1892	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe	31
PID 1892 wrote to memory of 1628	1892	2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe	31
PID 1628 wrote to memory of 2668	1628	tasksche.exe	32
PID 1628 wrote to memory of 2668	1628	tasksche.exe	32
PID 1628 wrote to memory of 2668	1628	tasksche.exe	32
PID 1628 wrote to memory of 2668	1628	tasksche.exe	32

C:\Users\Admin\AppData\Local\Temp\2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1892
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1628
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1628 -s 36
    3⤵
    - Program crash
    PID:2668

C:\Users\Admin\AppData\Local\Temp\2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-27_dcfa2d9692a946088fd4020314f51e9d_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

2

T1046

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\tasksche.exe

Filesize
2.0MB

MD5
54fed24cfd24c7e3703c770d23f9a4da

SHA1
8c405ed899110e52c579085f869dab804f8d1e2d

SHA256
197ba84cb91f98f6ff5927f839948f963b869ab8cf4c66a0961c95ef114f0fe6

SHA512
d6b1132bee7a30d8f7e72efd1a856e1a614718354d92da1902226ee1133c49b1e8f68e5f71c60436eb77f565a6d83f27a21f07c198474cd8acd3d7b13015e43d

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