wannacry | 063305b5396c457f97a8495acae31379e258a28184c2cea9e1a9d8fe0d10dbf2

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220718-en
resource tags

arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system
submitted
20/07/2022, 07:30

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General

Target
3beb8a3e32189c22dea897f8a1ae34ea.dll
Size 5.0MB
Sample220720-jbt6hsdbb7
SHA256 063305b5396c457f97a8495acae31379e258a28184c2cea9e1a9d8fe0d10dbf2
MD5 3beb8a3e32189c22dea897f8a1ae34ea
SHA1 101609731c7fc179cd97237811ec73d1c58fc90b
SHA512 dd92301e511663a5f9c448afaa58870a37938334f7a5573a970f9a5f4c4d4ac57590dd8abf07041ee0002524adb8ca38b95018d82922906c8e19305610b5b4c9
MD5 SHA1 SHA512

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3322) 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

pid	Process
4128	mssecsvc.exe
2932	mssecsvc.exe
3128	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

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

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 4376	1184	rundll32.exe	77
PID 1184 wrote to memory of 4376	1184	rundll32.exe	77
PID 1184 wrote to memory of 4376	1184	rundll32.exe	77
PID 4376 wrote to memory of 4128	4376	rundll32.exe	78
PID 4376 wrote to memory of 4128	4376	rundll32.exe	78
PID 4376 wrote to memory of 4128	4376	rundll32.exe	78

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3beb8a3e32189c22dea897f8a1ae34ea.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\3beb8a3e32189c22dea897f8a1ae34ea.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:4376
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:4128
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:3128

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:2932

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

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Downloads

mssecsvc.exe

Path C:\WINDOWS\mssecsvc.exe
Size 3.6MB
SHA256 0b1e6f82d4a0e10d19bfd4f3ba3d3c398eb74f2f2bbd8bec1812d4726c663594
MD5 63dc3e43071e60efe2ec0d0e7b458f05
SHA1 7a5b58539995dbd4e36c0ff8a8a7aa705d90324d
SHA512 8f872a67bc6d789a6815f4539ac4fc2e303928ad03dd9ec917c3c2bf1d02bd6b9edcab5bfc70a5a9975b39c9c2e5d96b5146667d3658a5a35f603f1b6d18cf32
SSDEEP 98304:XD6oBhz1aRxcSUDk36SAEdhvxWa9P5DFtPlcd91Gyb2553l39QoHVT:XD6e1Cxcxk3ZAEUadmKT
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 0b1e6f82d4a0e10d19bfd4f3ba3d3c398eb74f2f2bbd8bec1812d4726c663594
MD5 63dc3e43071e60efe2ec0d0e7b458f05
SHA1 7a5b58539995dbd4e36c0ff8a8a7aa705d90324d
SHA512 8f872a67bc6d789a6815f4539ac4fc2e303928ad03dd9ec917c3c2bf1d02bd6b9edcab5bfc70a5a9975b39c9c2e5d96b5146667d3658a5a35f603f1b6d18cf32
SSDEEP 98304:XD6oBhz1aRxcSUDk36SAEdhvxWa9P5DFtPlcd91Gyb2553l39QoHVT:XD6e1Cxcxk3ZAEUadmKT
MD5 SHA1 SHA512 SSDEEP

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mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 0b1e6f82d4a0e10d19bfd4f3ba3d3c398eb74f2f2bbd8bec1812d4726c663594
MD5 63dc3e43071e60efe2ec0d0e7b458f05
SHA1 7a5b58539995dbd4e36c0ff8a8a7aa705d90324d
SHA512 8f872a67bc6d789a6815f4539ac4fc2e303928ad03dd9ec917c3c2bf1d02bd6b9edcab5bfc70a5a9975b39c9c2e5d96b5146667d3658a5a35f603f1b6d18cf32
SSDEEP 98304:XD6oBhz1aRxcSUDk36SAEdhvxWa9P5DFtPlcd91Gyb2553l39QoHVT:XD6e1Cxcxk3ZAEUadmKT
MD5 SHA1 SHA512 SSDEEP

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 8d374ab772f3ef95d88f66abc12e329b7256e5d402ae996dc2d39a4b4f896465
MD5 84e36f16df19c81b6583b4995c759e91
SHA1 4e04c5514c5b0ced2331f94ca565d099a68a4d24
SHA512 2025f71f36593ec5675485a17781e1d0c945ca7f055a4be487262bb04a8cd788edb00b45d3e1d78e044bd7e1553236212c20d6fe99fdbce7ce513b3675c9dff8
SSDEEP 98304:Q6oBhz1aRxcSUDk36SAEdhvxWa9P5DFtPlcd91Gyb2553l39QoHV2:Q6e1Cxcxk3ZAEUadmK2
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads