wannacry | 84ac0e73d6980f73c61d410013af7fd3615ab730df2168b48a3323ae98c173d3

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
resource tags

arch:x64arch:x86image:win10v2004-20220414-enlocale:en-usos:windows10-2004-x64system
submitted
20-07-2022 01:31

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General

Target

3797c9c2f8a09b948b72ae0267496e93.dll
Size

5.0MB
MD5

3797c9c2f8a09b948b72ae0267496e93
SHA1

31becf765d42b6392738268dd2306b65e65c7ba1
SHA256

84ac0e73d6980f73c61d410013af7fd3615ab730df2168b48a3323ae98c173d3
SHA512

9629ce17170e29250ee9bd969264c49407dea271cf68228706b97f1b701b29d76b41637e42f5e938c935bdf33b4ae1c3067b2bcbb090f91f2eff1c43ce10079b

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3298) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Scanning
T1046
Executes dropped EXE 3 IoCs

Processes:

mssecsvc.exemssecsvc.exetasksche.exe

pid process

1876 mssecsvc.exe
1688 mssecsvc.exe
4412 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 Scanning
T1046
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

pid	process
1876	mssecsvc.exe
1688	mssecsvc.exe
4412	tasksche.exe

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

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 4116 wrote to memory of 4168	4116	rundll32.exe	rundll32.exe
PID 4116 wrote to memory of 4168	4116	rundll32.exe	rundll32.exe
PID 4116 wrote to memory of 4168	4116	rundll32.exe	rundll32.exe
PID 4168 wrote to memory of 1876	4168	rundll32.exe	mssecsvc.exe
PID 4168 wrote to memory of 1876	4168	rundll32.exe	mssecsvc.exe
PID 4168 wrote to memory of 1876	4168	rundll32.exe	mssecsvc.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3797c9c2f8a09b948b72ae0267496e93.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4116

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3797c9c2f8a09b948b72ae0267496e93.dll,#1
2⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4168

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe
3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1876

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
4⤵
- Executes dropped EXE
PID:4412

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
PID:1688

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Scanning

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\WINDOWS\mssecsvc.exe
Filesize
3.6MB

MD5
7582a999f122d2e63122bad5040b8f5b

SHA1
46e377b43cce1328be1ffa3cb5c92336c90e1bbc

SHA256
f196e67bab40d917830bbffb3347826c23305d97b2b1311160923a4803e7074a

SHA512
6fd93b69b5d2a0d39f8858f303aad7afd2445d66bb5716e0b9195c53964d68195e508bfc5047ab528aac8b54ac8c96cec6f6f23c86344af827931db9436524fa

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
7582a999f122d2e63122bad5040b8f5b

SHA1
46e377b43cce1328be1ffa3cb5c92336c90e1bbc

SHA256
f196e67bab40d917830bbffb3347826c23305d97b2b1311160923a4803e7074a

SHA512
6fd93b69b5d2a0d39f8858f303aad7afd2445d66bb5716e0b9195c53964d68195e508bfc5047ab528aac8b54ac8c96cec6f6f23c86344af827931db9436524fa

Download Submit
C:\Windows\mssecsvc.exe
Filesize
3.6MB

MD5
7582a999f122d2e63122bad5040b8f5b

SHA1
46e377b43cce1328be1ffa3cb5c92336c90e1bbc

SHA256
f196e67bab40d917830bbffb3347826c23305d97b2b1311160923a4803e7074a

SHA512
6fd93b69b5d2a0d39f8858f303aad7afd2445d66bb5716e0b9195c53964d68195e508bfc5047ab528aac8b54ac8c96cec6f6f23c86344af827931db9436524fa

Download Submit
C:\Windows\tasksche.exe
Filesize
3.4MB

MD5
6637b0761727686d36acfca7337f2c9c

SHA1
6c3e0d9b765f666fba867d7c4c253c29216e5e01

SHA256
7052c1b6734eeb8dd715c1ee9148e6b32c805f0ddbce2fd4423e39c92d6870d6

SHA512
8a51e4cbd8f985716b00851b0d8306fa2b7079a5f42ad611f89b817841000fb0795120840461a4c3f32485f4a59258a412caa3111acd9bf17814bc67b6b9cfa4

Download Submit
memory/1876-131-0x0000000000000000-mapping.dmp

Download
memory/4168-130-0x0000000000000000-mapping.dmp

Download