wannacry | 5eb23c2a876f49268b7b57028338d7d84a1f6ce1696079d6e659a9990ed1db0d

General

Target

2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Size

3.6MB
MD5

8cd91440c27fbc447f07b1be280d4f6b
SHA1

32b4c0383fa45d218367aa2e9ebfcf3410e10787
SHA256

5eb23c2a876f49268b7b57028338d7d84a1f6ce1696079d6e659a9990ed1db0d
SHA512

10032785648f8879816e3d08148d08890aa01e67dc5d614d208236291e189a7f2e300adc8c745857a3870bb1b5467aab83f7ecc1c74b93603a8877d5612933de
SSDEEP

12288:GvbLgPlu+QhMbaIMu7L5NVErCA4z2g6rTcbckPU82900Ve7ToyoMoZq02:2bLgddQhfdmMSirYbcMNge2m

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3228) 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
1540	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 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{92F7C9E8-F056-4FBA-A791-4147CB7B9EE2}\4a-ca-24-3b-ab-ef	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-ca-24-3b-ab-ef\WpadDecisionTime = 4021da480111db01	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-ca-24-3b-ab-ef\WpadDecision = "0"	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-ca-24-3b-ab-ef\WpadDecisionReason = "1"	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00ae000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4a-ca-24-3b-ab-ef	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{92F7C9E8-F056-4FBA-A791-4147CB7B9EE2}	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{92F7C9E8-F056-4FBA-A791-4147CB7B9EE2}\WpadDecisionReason = "1"	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{92F7C9E8-F056-4FBA-A791-4147CB7B9EE2}\WpadDecisionTime = 4021da480111db01	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{92F7C9E8-F056-4FBA-A791-4147CB7B9EE2}\WpadDecision = "0"	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{92F7C9E8-F056-4FBA-A791-4147CB7B9EE2}\WpadNetworkName = "Network 3"	2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2692
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:1540

C:\Users\Admin\AppData\Local\Temp\2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-27_8cd91440c27fbc447f07b1be280d4f6b_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2088

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
3.4MB

MD5
c24aa7c75a5a4338b39b9f9a46eebb85

SHA1
d416ac20736fbcf683b2b3361da244af6ab21fd7

SHA256
c602080d03c947167a37f3abfd6d733f90cf34ce156d7bc9ab9d110612255704

SHA512
66fe69c2a618c3bf89ac32374a9249d74ee34989a3553225f9950eeaef168bef19e4494a802e4e09ab0e927850bf575d456abaa536a9d2363ab2350dd05b5097

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Analysis

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