wannacry | 1266653ad725235eeba63844896b739e51d6ddf7d2dc659db17a684036af0ff3

General

Target

2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Size

2.2MB
MD5

91955908d09c6f83824fc68d561d3347
SHA1

d0e88ca35e881e911ad9bdf95a3a35ed7dce6c8e
SHA256

1266653ad725235eeba63844896b739e51d6ddf7d2dc659db17a684036af0ff3
SHA512

1c9a898a6ee31308ed4da07f7a3ff6590abdade62b3c0cc8f78168deaa6e76bededbb63ae8c12211025bb7b0e77156c3a8350ea6efac43c4e7a64832c49d9e2f
SSDEEP

49152:Qn8EKUacBVQej/1INRx+TSqTdX1HkQo6SAARdhnvn:Q8yfBhz1aRxcSUDk36SAEdhvn

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3327) 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
1120	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 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1316	1120	WerFault.exe	92

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	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\P3P\History	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 1120	2384	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe	92
PID 2384 wrote to memory of 1120	2384	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe	92
PID 2384 wrote to memory of 1120	2384	2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2384
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1120
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1120 -s 596
    3⤵
    - Program crash
    PID:1316

C:\Users\Admin\AppData\Local\Temp\2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-18_91955908d09c6f83824fc68d561d3347_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1120 -ip 1120
1⤵
PID:1116

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=4160,i,4356837537417149674,16553092232944545509,262144 --variations-seed-version --mojo-platform-channel-handle=3820 /prefetch:8
1⤵
PID:4896

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
b8889540b0cc31904270b4c2abd28281

SHA1
01f1ef068225fc3f68dd34ca37891d4174595a2a

SHA256
d707154613a5ffa6717afb3d163ced9c58dbb5d688656da93778f27018408e5d

SHA512
33ad7fd853c6ecf292f5079f4241b68d3f803fdd0b6d5c69da216bb576652330ce3a57d7e22e15676a3a198a8c6722d2ee262f2b66f58c4e4504da1922037a79

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