4e0ddcd303f27c01dcc8a35a9bd821c53fb7dcca474ac7f0c84d3c6451e9f778

Analysis

max time kernel
1798s
max time network
1798s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/04/2024, 13:34

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General

Target
Antimalware Service Executable.js
Size 713KB
Sample240409-qvlrtabe9s
SHA256 e3a33757c2e596f7ee50a4a41ff58f2e64dbdb062257fe5749ca19b955b0baaf
MD5 c958a31d5e439d5b0d01900e5a85992a
SHA1 fc40d0ef637fe55fbaf83e8f4891e008ac736df6
SHA512 2aa0c813b7c17b01e1c18a3a12fb4f3c8ba9c9fee79a3ed66421959fd0440571e0cba5e90569970655342ce2730e823feae23ef6c5da09248f3da68fc0f3cf1c
SSDEEP 12288:KOmMdaDXBuOdAAxcHaMp7yk0AaDhlLBO0Xzaj1B+UquKbLZaQlx+2CRQlD+EhajH:KOmMdaDXBuOdAAxcHaMp7yk0AaDhlLBc
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

persistence

Malware Config

Signatures

Blocklisted process makes network request 64 IoCs

flow	pid	Process
4	2204	wscript.exe
6	2204	wscript.exe
8	2204	wscript.exe
9	2204	wscript.exe
11	2204	wscript.exe
12	2204	wscript.exe
13	2204	wscript.exe
15	2204	wscript.exe
16	2204	wscript.exe
17	2204	wscript.exe
19	2204	wscript.exe
20	2204	wscript.exe
21	2204	wscript.exe
23	2204	wscript.exe
24	2204	wscript.exe
25	2204	wscript.exe
27	2204	wscript.exe
28	2204	wscript.exe
29	2204	wscript.exe
31	2204	wscript.exe
32	2204	wscript.exe
33	2204	wscript.exe
35	2204	wscript.exe
36	2204	wscript.exe
37	2204	wscript.exe
39	2204	wscript.exe
40	2204	wscript.exe
41	2204	wscript.exe
43	2204	wscript.exe
44	2204	wscript.exe
45	2204	wscript.exe
47	2204	wscript.exe
48	2204	wscript.exe
49	2204	wscript.exe
51	2204	wscript.exe
52	2204	wscript.exe
53	2204	wscript.exe
55	2204	wscript.exe
56	2204	wscript.exe
57	2204	wscript.exe
59	2204	wscript.exe
60	2204	wscript.exe
61	2204	wscript.exe
63	2204	wscript.exe
64	2204	wscript.exe
65	2204	wscript.exe
67	2204	wscript.exe
68	2204	wscript.exe
69	2204	wscript.exe
71	2204	wscript.exe
72	2204	wscript.exe
73	2204	wscript.exe
75	2204	wscript.exe
76	2204	wscript.exe
77	2204	wscript.exe
79	2204	wscript.exe
80	2204	wscript.exe
81	2204	wscript.exe
83	2204	wscript.exe
84	2204	wscript.exe
85	2204	wscript.exe
87	2204	wscript.exe
88	2204	wscript.exe
89	2204	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-1-5-21-2297530677-1229052932-2803917579-1000\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-1-5-21-2297530677-1229052932-2803917579-1000\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 2112 wrote to memory of 2204	2112	wscript.exe	28
PID 2112 wrote to memory of 2204	2112	wscript.exe	28
PID 2112 wrote to memory of 2204	2112	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:2112
- 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:2204

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

Antimalware Service Executable.js

Path C:\Users\Admin\AppData\Roaming\Antimalware Service Executable.js
Size 713KB
SHA256 e3a33757c2e596f7ee50a4a41ff58f2e64dbdb062257fe5749ca19b955b0baaf
MD5 c958a31d5e439d5b0d01900e5a85992a
SHA1 fc40d0ef637fe55fbaf83e8f4891e008ac736df6
SHA512 2aa0c813b7c17b01e1c18a3a12fb4f3c8ba9c9fee79a3ed66421959fd0440571e0cba5e90569970655342ce2730e823feae23ef6c5da09248f3da68fc0f3cf1c
SSDEEP 12288:KOmMdaDXBuOdAAxcHaMp7yk0AaDhlLBO0Xzaj1B+UquKbLZaQlx+2CRQlD+EhajH:KOmMdaDXBuOdAAxcHaMp7yk0AaDhlLBc
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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