wannacry | 99ffa3f3e2912ab2127858cb203a9bd7e97efcb7038fdffd8996647e9b3920b1

General

Target

2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Size

5.0MB
MD5

85d92d485be05e909941bb490b46aabc
SHA1

63a7f1389db34145caf912cf2ef73873c5a66f58
SHA256

99ffa3f3e2912ab2127858cb203a9bd7e97efcb7038fdffd8996647e9b3920b1
SHA512

352a2fe781bbeebe8c8fa5f3922f82687bb6e84a5f7b46e7bf21214bd05bb55f9ee38ae071f960de7224f61c224510dd66ffb1160ed6ac31c8b40d80b534d898
SSDEEP

6144:GE9l9ynqIYVTH5DgSg8ajldktM0XXrP2QhMV9qbBLIwYQuy8DLq1eNVDvMr:GebLgPlu+QhMbaIMu7L5NVE

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3213) 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
2844	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	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2024-08-21_85d92d485be05e909941bb490b46aabc_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	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe

Modifies data under HKEY_USERS 24 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3BF7F99E-EA00-4901-9DB9-AC5E1107BC78}\9e-14-0f-1f-e1-04	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3BF7F99E-EA00-4901-9DB9-AC5E1107BC78}\WpadDecisionTime = 80f00ca49ff3da01	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-14-0f-1f-e1-04\WpadDecisionReason = "1"	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-14-0f-1f-e1-04\WpadDecision = "0"	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3BF7F99E-EA00-4901-9DB9-AC5E1107BC78}	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0076000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3BF7F99E-EA00-4901-9DB9-AC5E1107BC78}\WpadDecisionReason = "1"	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3BF7F99E-EA00-4901-9DB9-AC5E1107BC78}\WpadNetworkName = "Network 3"	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-14-0f-1f-e1-04	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\9e-14-0f-1f-e1-04\WpadDecisionTime = 80f00ca49ff3da01	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{3BF7F99E-EA00-4901-9DB9-AC5E1107BC78}\WpadDecision = "0"	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:2388
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2844

C:\Users\Admin\AppData\Local\Temp\2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-08-21_85d92d485be05e909941bb490b46aabc_wannacry.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2472

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
e57f0ef1f0b4f849f78ca7f53f94e188

SHA1
b3812fa0ceb0c7f7bddd0da8312af6d7dcad49f3

SHA256
c794b70af08b30ed5b3f8d5001f45dc0346a13112a0c7090f82015449fa855f5

SHA512
d54d818a4ed2e40e911ea9eff52cdc0dc959b9f23ce391851a79b3ce85373d2f59c208648d714f9554a27e937594381b8e2bf2d0f9e1df650a6d2e6f95f359d8

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Analysis

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