vjw0rm | fd12bc99829e1bf6b3d47705419e33055763a3a375e3069ff5e3d9654c5e461b

General

Target

7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee.js
Size

260KB
MD5

d4b928defdafd9c54fe69160ba650cc8
SHA1

041715d3775045016dfbebb68f8e4964c8ad123a
SHA256

7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee
SHA512

a77cc501a0fb679cc407f97e84af603f90dd8451ea66cf49a1cc76698f1fcaddb6f28f08aa090f38f9004763ccc020d16a069ae5f9ec609a982c39042db668c4
SSDEEP

6144:EPP/pyxHpiGSxCXJZTv+jCtMX1/MJIUDKi:EPXpyR17r+jCtMl/kD9

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 33 IoCs

flow	pid	Process
7	3040	wscript.exe
8	5012	wscript.exe
9	2156	wscript.exe
19	2156	wscript.exe
22	2156	wscript.exe
24	3040	wscript.exe
32	5012	wscript.exe
33	3040	wscript.exe
44	2156	wscript.exe
50	3040	wscript.exe
51	2156	wscript.exe
52	5012	wscript.exe
54	3040	wscript.exe
56	2156	wscript.exe
57	5012	wscript.exe
58	3040	wscript.exe
59	2156	wscript.exe
60	3040	wscript.exe
62	2156	wscript.exe
66	2156	wscript.exe
67	5012	wscript.exe
70	3040	wscript.exe
71	2156	wscript.exe
72	5012	wscript.exe
77	3040	wscript.exe
78	2156	wscript.exe
79	5012	wscript.exe
80	5012	wscript.exe
86	5012	wscript.exe
87	3040	wscript.exe
88	2156	wscript.exe
89	5012	wscript.exe
91	3040	wscript.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 5 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\EZIcjnTabV.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\EZIcjnTabV.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\EZIcjnTabV.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\7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee.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
5	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 6 IoCs

description	pid	Process	procid_target
PID 2276 wrote to memory of 2156	2276	wscript.exe	82
PID 2276 wrote to memory of 2156	2276	wscript.exe	82
PID 2276 wrote to memory of 3040	2276	wscript.exe	83
PID 2276 wrote to memory of 3040	2276	wscript.exe	83
PID 3040 wrote to memory of 5012	3040	wscript.exe	84
PID 3040 wrote to memory of 5012	3040	wscript.exe	84

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee.js
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2276
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\EZIcjnTabV.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:2156
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee.js"
  2⤵
  - Blocklisted process makes network request
  - Checks computer location settings
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:3040
- - C:\Windows\System32\wscript.exe
    "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\EZIcjnTabV.js"
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    PID:5012

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee.js

Filesize
260KB

MD5
d4b928defdafd9c54fe69160ba650cc8

SHA1
041715d3775045016dfbebb68f8e4964c8ad123a

SHA256
7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee

SHA512
a77cc501a0fb679cc407f97e84af603f90dd8451ea66cf49a1cc76698f1fcaddb6f28f08aa090f38f9004763ccc020d16a069ae5f9ec609a982c39042db668c4

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

Filesize
6KB

MD5
a46a00fce7c7561dd03f37519c548491

SHA1
d707d5893467538b1ef934900fa7953b0ba3be37

SHA256
db64faff8266eb46d6e649170da234562332aeb11b6e7adc3073739906a8592b

SHA512
61295739a668d5c286bce20c643e2b1498ffc2f4a2873177b655bf9b8fe534c041a12da95ffa0552e1b76ba2ad09344d5bfc70ba09e03a43d08f01a59f992f8c

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

Filesize
6KB

MD5
a46a00fce7c7561dd03f37519c548491

SHA1
d707d5893467538b1ef934900fa7953b0ba3be37

SHA256
db64faff8266eb46d6e649170da234562332aeb11b6e7adc3073739906a8592b

SHA512
61295739a668d5c286bce20c643e2b1498ffc2f4a2873177b655bf9b8fe534c041a12da95ffa0552e1b76ba2ad09344d5bfc70ba09e03a43d08f01a59f992f8c

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee.js

Filesize
260KB

MD5
d4b928defdafd9c54fe69160ba650cc8

SHA1
041715d3775045016dfbebb68f8e4964c8ad123a

SHA256
7a9d74c5d107f2c91ae6414674542a85136b310b3948319ffea6139226eaaaee

SHA512
a77cc501a0fb679cc407f97e84af603f90dd8451ea66cf49a1cc76698f1fcaddb6f28f08aa090f38f9004763ccc020d16a069ae5f9ec609a982c39042db668c4

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

Filesize
6KB

MD5
a46a00fce7c7561dd03f37519c548491

SHA1
d707d5893467538b1ef934900fa7953b0ba3be37

SHA256
db64faff8266eb46d6e649170da234562332aeb11b6e7adc3073739906a8592b

SHA512
61295739a668d5c286bce20c643e2b1498ffc2f4a2873177b655bf9b8fe534c041a12da95ffa0552e1b76ba2ad09344d5bfc70ba09e03a43d08f01a59f992f8c

Download Submit

Analysis

Sharing