vjw0rm | 3beb5d47b8a2cf4b5dc8f442445fae8c26898add6427ea86c27c3af2797356bb

Analysis

max time kernel
151s
max time network
154s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
09-04-2023 07:08

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General

Target

INVOICE.PDF.js
Size

2.7MB
MD5

42a42d7b66691e3fff3e691d70703ce5
SHA1

9e57f573570d068b964c84b5d7cdbf1fb010e3d9
SHA256

3beb5d47b8a2cf4b5dc8f442445fae8c26898add6427ea86c27c3af2797356bb
SHA512

bd6691d8853434c30b6e6716d5d2d3bca316bc9ea0b4defface0fd4aaa6fd2bf517db1a53f84ea98d9e16510f27410764adca13a70ba1f0d4707147683949d7d
SSDEEP

24576:ydSySTD8C4AeGIfkZP5Xog8NWtQVNmxE/imwx+pBUqyO57ZPUm:nnuLh

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Blocklisted process makes network request 38 IoCs

flow	pid	Process
10	528	wscript.exe
11	776	wscript.exe
13	528	wscript.exe
14	1832	wscript.exe
15	776	wscript.exe
17	1832	wscript.exe
18	1832	wscript.exe
20	776	wscript.exe
25	528	wscript.exe
27	1832	wscript.exe
29	776	wscript.exe
30	776	wscript.exe
31	1832	wscript.exe
34	1832	wscript.exe
35	776	wscript.exe
39	528	wscript.exe
41	776	wscript.exe
42	1832	wscript.exe
44	776	wscript.exe
46	1832	wscript.exe
47	776	wscript.exe
48	1832	wscript.exe
54	528	wscript.exe
56	776	wscript.exe
58	1832	wscript.exe
59	776	wscript.exe
61	1832	wscript.exe
62	776	wscript.exe
66	1832	wscript.exe
69	528	wscript.exe
70	776	wscript.exe
72	1832	wscript.exe
73	776	wscript.exe
74	1832	wscript.exe
76	776	wscript.exe
80	1832	wscript.exe
83	528	wscript.exe
84	776	wscript.exe

Drops startup file 5 IoCs

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

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\INVOICE = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\INVOICE.PDF.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Windows\CurrentVersion\Run\INVOICE = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\INVOICE.PDF.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\INVOICE = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\INVOICE.PDF.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Windows\CurrentVersion\Run\INVOICE = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\INVOICE.PDF.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
8	ip-api.com

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 920 wrote to memory of 776	920	wscript.exe	28
PID 920 wrote to memory of 776	920	wscript.exe	28
PID 920 wrote to memory of 776	920	wscript.exe	28
PID 920 wrote to memory of 528	920	wscript.exe	29
PID 920 wrote to memory of 528	920	wscript.exe	29
PID 920 wrote to memory of 528	920	wscript.exe	29
PID 528 wrote to memory of 1832	528	wscript.exe	31
PID 528 wrote to memory of 1832	528	wscript.exe	31
PID 528 wrote to memory of 1832	528	wscript.exe	31

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\INVOICE.PDF.js
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:920
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\QziJnhNNpM.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:776
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\INVOICE.PDF.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:528
- - C:\Windows\System32\wscript.exe
    "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\QziJnhNNpM.js"
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    PID:1832

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\INVOICE.PDF.js

Filesize
2.7MB

MD5
42a42d7b66691e3fff3e691d70703ce5

SHA1
9e57f573570d068b964c84b5d7cdbf1fb010e3d9

SHA256
3beb5d47b8a2cf4b5dc8f442445fae8c26898add6427ea86c27c3af2797356bb

SHA512
bd6691d8853434c30b6e6716d5d2d3bca316bc9ea0b4defface0fd4aaa6fd2bf517db1a53f84ea98d9e16510f27410764adca13a70ba1f0d4707147683949d7d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\INVOICE.PDF.js

Filesize
2.7MB

MD5
42a42d7b66691e3fff3e691d70703ce5

SHA1
9e57f573570d068b964c84b5d7cdbf1fb010e3d9

SHA256
3beb5d47b8a2cf4b5dc8f442445fae8c26898add6427ea86c27c3af2797356bb

SHA512
bd6691d8853434c30b6e6716d5d2d3bca316bc9ea0b4defface0fd4aaa6fd2bf517db1a53f84ea98d9e16510f27410764adca13a70ba1f0d4707147683949d7d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\INVOICE.PDF.js

Filesize
2.7MB

MD5
42a42d7b66691e3fff3e691d70703ce5

SHA1
9e57f573570d068b964c84b5d7cdbf1fb010e3d9

SHA256
3beb5d47b8a2cf4b5dc8f442445fae8c26898add6427ea86c27c3af2797356bb

SHA512
bd6691d8853434c30b6e6716d5d2d3bca316bc9ea0b4defface0fd4aaa6fd2bf517db1a53f84ea98d9e16510f27410764adca13a70ba1f0d4707147683949d7d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\QziJnhNNpM.js

Filesize
346KB

MD5
c92fd5c5868d3b5074bdafb4d00bdcc0

SHA1
e5b37d03eaffa0abd95fee227dbc8430d44897d2

SHA256
d97f4e5a8d586a62c824a0a351fa35084a22718cc958897d559625cabc067967

SHA512
580fea0230467e4b88d92aac86fcc187e6f1689020f9045080cb9f2481f69c83055e2bb69c3e4e2b5354b8380c81b1aa33dcfbad29a5f898e1ac79c3ea444aab

Download Submit
C:\Users\Admin\AppData\Roaming\QziJnhNNpM.js

Filesize
346KB

MD5
c92fd5c5868d3b5074bdafb4d00bdcc0

SHA1
e5b37d03eaffa0abd95fee227dbc8430d44897d2

SHA256
d97f4e5a8d586a62c824a0a351fa35084a22718cc958897d559625cabc067967

SHA512
580fea0230467e4b88d92aac86fcc187e6f1689020f9045080cb9f2481f69c83055e2bb69c3e4e2b5354b8380c81b1aa33dcfbad29a5f898e1ac79c3ea444aab

Download Submit
C:\Users\Admin\AppData\Roaming\QziJnhNNpM.js

Filesize
346KB

MD5
c92fd5c5868d3b5074bdafb4d00bdcc0

SHA1
e5b37d03eaffa0abd95fee227dbc8430d44897d2

SHA256
d97f4e5a8d586a62c824a0a351fa35084a22718cc958897d559625cabc067967

SHA512
580fea0230467e4b88d92aac86fcc187e6f1689020f9045080cb9f2481f69c83055e2bb69c3e4e2b5354b8380c81b1aa33dcfbad29a5f898e1ac79c3ea444aab

Download Submit