wannacry | 1b519d3c9e1032164f405a499e5bab8bb1679b8ef545c910ef967c4961148edd

Analysis

max time kernel
151s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
08/09/2022, 19:49

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General

Target
13c48f1c0755effc4376bfa52f387d3c.exe
Size 2.2MB
Sample220908-yjpy4afff5
SHA256 1b519d3c9e1032164f405a499e5bab8bb1679b8ef545c910ef967c4961148edd
MD5 13c48f1c0755effc4376bfa52f387d3c
SHA1 0ac1498a610347334450f1918bab617579914612
SHA512 447867c298fc7b02c7fdfdaaa3e15ae1b9aa7c924ebf07d8567c4b5c18ecd16f9303c7e1c24e9521381f5f0027c40552bcaf7c5497d53395b830ecbce529e9ad
SSDEEP 49152:QnsdEKUacBVQej/1INRx+TSqTdX1HkQo6SAARdhnvn:QCyfBhz1aRxcSUDk36SAEdhvn
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3206) 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 1 IoCs

pid	Process
1648	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 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	13c48f1c0755effc4376bfa52f387d3c.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3132	1648	WerFault.exe	82

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	13c48f1c0755effc4376bfa52f387d3c.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	13c48f1c0755effc4376bfa52f387d3c.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	13c48f1c0755effc4376bfa52f387d3c.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	13c48f1c0755effc4376bfa52f387d3c.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	13c48f1c0755effc4376bfa52f387d3c.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3500 wrote to memory of 1648	3500	13c48f1c0755effc4376bfa52f387d3c.exe	82
PID 3500 wrote to memory of 1648	3500	13c48f1c0755effc4376bfa52f387d3c.exe	82
PID 3500 wrote to memory of 1648	3500	13c48f1c0755effc4376bfa52f387d3c.exe	82

C:\Users\Admin\AppData\Local\Temp\13c48f1c0755effc4376bfa52f387d3c.exe
"C:\Users\Admin\AppData\Local\Temp\13c48f1c0755effc4376bfa52f387d3c.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3500
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:1648
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1648 -s 596
    3⤵
    - Program crash
    PID:3132

C:\Users\Admin\AppData\Local\Temp\13c48f1c0755effc4376bfa52f387d3c.exe
C:\Users\Admin\AppData\Local\Temp\13c48f1c0755effc4376bfa52f387d3c.exe -m security
1⤵
- Modifies data under HKEY_USERS
PID:4692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 1648 -ip 1648
1⤵
PID:1164

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

tasksche.exe

Path C:\WINDOWS\tasksche.exe
Size 2.0MB
SHA256 1f219a2df3d2eb0a9cf4a624c6ecc128d3dfce19134b6fe7c20d329a415a7153
MD5 9cbde1a45c70eb9a71afe6c68b1c554d
SHA1 6ae0c0a8a03f114997568ff0396d1ded9c33e15c
SHA512 ba863bc87a9d87044fe99238ba76384e4989d356b0aee04bb70a132c8e840568dcff0c2525c4d0f981eab6fb275c03a0d7181cef73fd75592e5ccdf4f429f2c1
SSDEEP 49152:SdEKUacBVQej/1INRx+TSqTdX1HkQo6SAARdhnvm:gyfBhz1aRxcSUDk36SAEdhvm
MD5 SHA1 SHA512 SSDEEP

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