wannacry | 6b215ba58f2847b525c44f3302ad51177512fcdfc2af82d5d2d64bf447d86edc

General

Target

ab0048b9856d6fb658eb8e042be8c4bd_JaffaCakes118.dll
Size

5.0MB
MD5

ab0048b9856d6fb658eb8e042be8c4bd
SHA1

99d0077d459fd6760aa5e531ec4978c79260ff1e
SHA256

6b215ba58f2847b525c44f3302ad51177512fcdfc2af82d5d2d64bf447d86edc
SHA512

f8262a984d58b07d8802abaa59bfe2fe25edc42ea2f7655da0cee30beb43528bdc590a88f95f31f1a71818721b174f2d7a0ce5137f06c6a15df6b69bbe319abd
SSDEEP

12288:yvbLgPlu+QhMbaIMu7L5NVErCA4z2g6rTcbckPU82900:SbLgddQhfdmMSirYbcMN

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3155) 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 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

2224 mssecsvc.exe
2520 mssecsvc.exe
2432 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

pid	process
2224	mssecsvc.exe
2520	mssecsvc.exe
2432	tasksche.exe

Drops file in System32 directory 1 IoCs

Processes:

mssecsvc.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	mssecsvc.exe

Drops file in Windows directory 2 IoCs

Processes:

rundll32.exemssecsvc.exe

description ioc process

File created C:\WINDOWS\mssecsvc.exe rundll32.exe
File created C:\WINDOWS\tasksche.exe mssecsvc.exe

description	ioc	process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

Modifies data under HKEY_USERS 24 IoCs

Processes:

mssecsvc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{34447DAD-C7FA-4577-89CC-D35CA78B8802}\WpadDecisionReason = "1"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\62-c7-b8-aa-c0-d1\WpadDecisionTime = d0657da183beda01	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{34447DAD-C7FA-4577-89CC-D35CA78B8802}\WpadDecisionTime = d0657da183beda01	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{34447DAD-C7FA-4577-89CC-D35CA78B8802}\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0132000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\62-c7-b8-aa-c0-d1	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{34447DAD-C7FA-4577-89CC-D35CA78B8802}\62-c7-b8-aa-c0-d1	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{34447DAD-C7FA-4577-89CC-D35CA78B8802}	mssecsvc.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{34447DAD-C7FA-4577-89CC-D35CA78B8802}\WpadNetworkName = "Network 3"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\62-c7-b8-aa-c0-d1\WpadDecisionReason = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\62-c7-b8-aa-c0-d1\WpadDecision = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2908 wrote to memory of 1668	2908	rundll32.exe	rundll32.exe
PID 2908 wrote to memory of 1668	2908	rundll32.exe	rundll32.exe
PID 2908 wrote to memory of 1668	2908	rundll32.exe	rundll32.exe
PID 2908 wrote to memory of 1668	2908	rundll32.exe	rundll32.exe
PID 2908 wrote to memory of 1668	2908	rundll32.exe	rundll32.exe
PID 2908 wrote to memory of 1668	2908	rundll32.exe	rundll32.exe
PID 2908 wrote to memory of 1668	2908	rundll32.exe	rundll32.exe
PID 1668 wrote to memory of 2224	1668	rundll32.exe	mssecsvc.exe
PID 1668 wrote to memory of 2224	1668	rundll32.exe	mssecsvc.exe
PID 1668 wrote to memory of 2224	1668	rundll32.exe	mssecsvc.exe
PID 1668 wrote to memory of 2224	1668	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ab0048b9856d6fb658eb8e042be8c4bd_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2908

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ab0048b9856d6fb658eb8e042be8c4bd_JaffaCakes118.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1668

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2224

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:2432

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:2520

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\mssecsvc.exe

Filesize
3.6MB

MD5
c8258c48cbeef8f95df45452de3a4799

SHA1
ebaf8e324c6129b00f708480c4677467ceaa8c06

SHA256
ec4d6c08fc843b9f1c00d6e0c70e8732e54f85818a107c397b53d5f66e5f8356

SHA512
dfaeb9f336ea6f107bc90c8f49a65a78729de311dc7f4adbf3c826a7a09e48834ab4a331405080a0c1ac8f2a42a38df4954c175660cdfa0d7e7642381f48667f

Download Submit
C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
0983e10da094d242ab67b2eb84c03dd1

SHA1
82725733486da4b36b8467b30d96b170a0dce764

SHA256
ae26fb52093752b3abbbcf86849dc01fcf0a0d83bc09443275a6964769437c66

SHA512
b9a31ecf66bc159f4b3049c2628400e8a7ad731478560302901d64311e380eff0cd2acf2fc6cde26a7969ba749754c699ceabe40eb4931445e96fd14ef7dccfe

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads