4e0ddcd303f27c01dcc8a35a9bd821c53fb7dcca474ac7f0c84d3c6451e9f778

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240409-qvlrtabe9s 10

09-04-2024 13:34

09-04-2024 13:33

09-04-2024 13:33

07-07-2023 11:45

Analysis

max time kernel
577s
max time network
592s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
14-04-2024 10:31

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General

Target

Antimalware Service Executable.js
Size

713KB
MD5

c958a31d5e439d5b0d01900e5a85992a
SHA1

fc40d0ef637fe55fbaf83e8f4891e008ac736df6
SHA256

e3a33757c2e596f7ee50a4a41ff58f2e64dbdb062257fe5749ca19b955b0baaf
SHA512

2aa0c813b7c17b01e1c18a3a12fb4f3c8ba9c9fee79a3ed66421959fd0440571e0cba5e90569970655342ce2730e823feae23ef6c5da09248f3da68fc0f3cf1c
SSDEEP

12288:KOmMdaDXBuOdAAxcHaMp7yk0AaDhlLBO0Xzaj1B+UquKbLZaQlx+2CRQlD+EhajH:KOmMdaDXBuOdAAxcHaMp7yk0AaDhlLBc

Score

8^/10

persistence

Malware Config

Signatures

Blocklisted process makes network request 24 IoCs

flow	pid	Process
4	1384	wscript.exe
7	1384	wscript.exe
8	1384	wscript.exe
9	1384	wscript.exe
11	1384	wscript.exe
12	1384	wscript.exe
13	1384	wscript.exe
15	1384	wscript.exe
16	1384	wscript.exe
17	1384	wscript.exe
19	1384	wscript.exe
20	1384	wscript.exe
21	1384	wscript.exe
23	1384	wscript.exe
24	1384	wscript.exe
25	1384	wscript.exe
27	1384	wscript.exe
28	1384	wscript.exe
29	1384	wscript.exe
31	1384	wscript.exe
32	1384	wscript.exe
33	1384	wscript.exe
35	1384	wscript.exe
36	1384	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Antimalware Service Executable.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Antimalware Service Executable.js	wscript.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Antimalware Service Executable = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Antimalware Service Executable.js\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Antimalware Service Executable = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Antimalware Service Executable.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Antimalware Service Executable = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Antimalware Service Executable.js\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Antimalware Service Executable = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\Antimalware Service Executable.js\""	wscript.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
3	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2020 wrote to memory of 1384	2020	wscript.exe	28
PID 2020 wrote to memory of 1384	2020	wscript.exe	28
PID 2020 wrote to memory of 1384	2020	wscript.exe	28

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Antimalware Service Executable.js"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\Antimalware Service Executable.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:1384

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Antimalware Service Executable.js

Filesize
713KB

MD5
c958a31d5e439d5b0d01900e5a85992a

SHA1
fc40d0ef637fe55fbaf83e8f4891e008ac736df6

SHA256
e3a33757c2e596f7ee50a4a41ff58f2e64dbdb062257fe5749ca19b955b0baaf

SHA512
2aa0c813b7c17b01e1c18a3a12fb4f3c8ba9c9fee79a3ed66421959fd0440571e0cba5e90569970655342ce2730e823feae23ef6c5da09248f3da68fc0f3cf1c

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads