wannacry | 2a3e56e54485fd90e8e27cfa83953c78d3aa6afd2426e11aa8c46b07877ab416

General

Target

2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Size

3.6MB
MD5

639c25eed03a1311f732f0138dc6c757
SHA1

8aa6c610b56c1aaaa169eae4a8c737228d9ee464
SHA256

2a3e56e54485fd90e8e27cfa83953c78d3aa6afd2426e11aa8c46b07877ab416
SHA512

939cb13a2b5f5b19b5aee958096c3d412fb3f49d7646ba1340b54542b354aa6a633c492101b21145310dd47d0dc45169e65f463e614ae373929fe02e13460bc5
SSDEEP

49152:2nAQq3+D7VQej0W8Rx+TSqTdX1Hpe7PGvxJM0H9FPG/iEau3R8yAH1Furi:yDqO7hJ8RxcSUDppxWa9U3R8yAVEi

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3255) 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
2768	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	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-09-26_639c25eed03a1311f732f0138dc6c757_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	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7550CE52-E5DA-447E-B76C-BDF604CEB25C}\WpadDecisionTime = 50c9565e5810db01	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00d1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a6-29-fb-d4-29-22	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a6-29-fb-d4-29-22\WpadDecisionReason = "1"	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7550CE52-E5DA-447E-B76C-BDF604CEB25C}\WpadDecision = "0"	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7550CE52-E5DA-447E-B76C-BDF604CEB25C}\a6-29-fb-d4-29-22	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a6-29-fb-d4-29-22\WpadDecision = "0"	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7550CE52-E5DA-447E-B76C-BDF604CEB25C}	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7550CE52-E5DA-447E-B76C-BDF604CEB25C}\WpadDecisionReason = "1"	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{7550CE52-E5DA-447E-B76C-BDF604CEB25C}\WpadNetworkName = "Network 3"	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a6-29-fb-d4-29-22\WpadDecisionTime = 50c9565e5810db01	2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:1636
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2768

C:\Users\Admin\AppData\Local\Temp\2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-09-26_639c25eed03a1311f732f0138dc6c757_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2560

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
218cdd5b3d53e4fcc7dd2b58c0dcaa90

SHA1
36736b44a7cebc194d8943f93083ab6a77a80f50

SHA256
3fd8878e74e3de49dc0c24a03e2104d5c8bfc1291f832805f6582b3d5dc4e927

SHA512
669f6388b07b1b4538eb3032db95add08232ddbb5881927dff5795a99bc464bafd53fa89be75845bf6172324d50d4202635a27976bb35c994323648096cd2976

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Analysis

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