vjw0rm | 8e0718cf9229c3ec7a9bca40b38b5b0e61031e2fdee4511c8de665170c153598

Analysis

max time kernel
148s
max time network
146s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07-04-2024 13:34

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General

Target

e50cc2184078acbb9886740526f92975_JaffaCakes118.js
Size

26KB
MD5

e50cc2184078acbb9886740526f92975
SHA1

64b74fe23a2eff712000b258f15e92e4dcb0ae28
SHA256

8e0718cf9229c3ec7a9bca40b38b5b0e61031e2fdee4511c8de665170c153598
SHA512

7fc55bc3271bf8dbf9adb52727d25953ffe170ab098dad8f83b75d2f7631651765b81224cfa5e47406d36e6c10591529a2eef2e25eac8e272dc9d0840988b915
SSDEEP

384:TjzwwfHfEZVuf5ZYs9x7Gt2n4oumCMPts8yeB4KXTpnnVJE/1tx0PdbziY0z/+3x:XzX6QftWk4o9Cv6CKFnF30z/+320

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 32 IoCs

Processes:

wscript.exe

flow	pid	process
5	2752	wscript.exe
7	2752	wscript.exe
9	2752	wscript.exe
10	2752	wscript.exe
13	2752	wscript.exe
14	2752	wscript.exe
17	2752	wscript.exe
18	2752	wscript.exe
21	2752	wscript.exe
22	2752	wscript.exe
24	2752	wscript.exe
25	2752	wscript.exe
29	2752	wscript.exe
30	2752	wscript.exe
32	2752	wscript.exe
33	2752	wscript.exe
35	2752	wscript.exe
36	2752	wscript.exe
40	2752	wscript.exe
41	2752	wscript.exe
43	2752	wscript.exe
44	2752	wscript.exe
47	2752	wscript.exe
48	2752	wscript.exe
51	2752	wscript.exe
52	2752	wscript.exe
55	2752	wscript.exe
56	2752	wscript.exe
58	2752	wscript.exe
59	2752	wscript.exe
63	2752	wscript.exe
64	2752	wscript.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

wscript.exewscript.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\QFBaDfPcbm.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\R343ND8XDN = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\e50cc2184078acbb9886740526f92975_JaffaCakes118.js\""	wscript.exe

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

Processes:

wscript.exe

description	pid	process	target process
PID 2752 wrote to memory of 2880	2752	wscript.exe	wscript.exe
PID 2752 wrote to memory of 2880	2752	wscript.exe	wscript.exe
PID 2752 wrote to memory of 2880	2752	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\e50cc2184078acbb9886740526f92975_JaffaCakes118.js
1⤵
- Blocklisted process makes network request
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2752
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\QFBaDfPcbm.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:2880

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\QFBaDfPcbm.js

Filesize
9KB

MD5
1bd5ec41b28ca7cec093e8dfadef1d5b

SHA1
86fc74ba456c6fad7aca84f8f88046ea5fe0d519

SHA256
450211bd8dd2d26ed399750d602b70a3a35200bafd0398b6c6a63cf7c95e8d46

SHA512
3de650150406c1d421f06976e8afae0c7f694d2f7c368dbc7471179f82401a64fee143807ac1f9316a0815ee5abf5d34a6f3a8f65173af53961fdf9217313778

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