vjw0rm | 9285fa6ba7f6cb35a4371d51a11f7c5c7aa582cb1deec294aff20ec5060b0a2d

General

Target

235c68f406aa41b7e1a87e35d83add4c.js
Size

201KB
MD5

235c68f406aa41b7e1a87e35d83add4c
SHA1

dadb5bd81a34b437863e3d744ea0a06c48533b39
SHA256

9285fa6ba7f6cb35a4371d51a11f7c5c7aa582cb1deec294aff20ec5060b0a2d
SHA512

158661fdbd3c48fb3f3dba455833553e0c3c1c64d4007262515a689f755f5b752b34f7ead147834852445f60328e3d66b0ea44bfa79372f1667ea14297fa7d1a
SSDEEP

3072:ucygHBboR/hsrTjXCXJiMJexk0/ouyvTXiPbPN4kAx/cdDQaL:5HBb65CyNJexk0oGPD8KRL

Score

10^/10

vjw0rm discovery persistence trojan worm

Malware Config

Signatures

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

Checks computer location settings 2 TTPs 1 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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

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

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3556	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\ruYArSxXtj.js\""	WScript.exe

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\dll\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\symbols\dll\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\jvm.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\symbols\dll\jvm.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jvm.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\dll\jvm.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\dll\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\symbols\dll\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\dll\jvm.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\symbols\dll\jvm.pdb	javaw.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4704 wrote to memory of 2516	4704	wscript.exe	89
PID 4704 wrote to memory of 2516	4704	wscript.exe	89
PID 4704 wrote to memory of 1760	4704	wscript.exe	91
PID 4704 wrote to memory of 1760	4704	wscript.exe	91
PID 1760 wrote to memory of 3556	1760	javaw.exe	94
PID 1760 wrote to memory of 3556	1760	javaw.exe	94

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\235c68f406aa41b7e1a87e35d83add4c.js
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4704
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\ruYArSxXtj.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:2516
- C:\Program Files\Java\jre-1.8\bin\javaw.exe
  "C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\jmhefkpxy.txt"
  2⤵
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1760
- - C:\Windows\system32\icacls.exe
    C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
    3⤵
    - Modifies file permissions
    PID:3556

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp

Filesize
46B

MD5
45bbde313a610db95aad9256427fc978

SHA1
9bc9b8890826c7b576c316f4c69d1b6a9083e82c

SHA256
94c3d77f55baf77064291915ed9e328826fbdc8f4eb08a22c35446c703ebe978

SHA512
1aba04a6a18b6ee9bbf84db030ceb25cdfc1e43fa60f3d86a3da438a8a6f8e2976c1d8d3cf096c375e12ded96a99e8a6d28202f4a55080f6269ad65d523c7ffc

Download Submit
C:\Users\Admin\AppData\Roaming\jmhefkpxy.txt

Filesize
92KB

MD5
ae4f924072e8dd90687607e7becdde2e

SHA1
225d2c7cf6506bf59d865fe3dba1b6c1736d492b

SHA256
915de15ccb287c58270e6bc23523b0cde9ce077dbc0fef517faca1a1a0313286

SHA512
14da1de2af981af4390e3bb95e29f968f0ef67af011202ce9f598e9f553f822e37013301c965f871ad2660cc451fb7c1ad619bf9533405e7424ad88f199803f0

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

Filesize
9KB

MD5
ca4e11b0bbf70a587e0d653bfceded8c

SHA1
c70eeac3273988740e937e21e11948b003295582

SHA256
d0a3dc9322f9f6f9028f437d45757560de849fd0a0a6dcf8c92beed012b61e0d

SHA512
291bbeb73d3ecacfe5c50aa9fd59f0542eea4950a82d0def79318017d5a0c9bcd3792a49c17309414c7678235ffeae284f29643e2be4b4a368592c0f5f64bdf0

Download Submit
memory/1760-11-0x0000028880000000-0x0000028881000000-memory.dmp

Filesize
16.0MB

Download
memory/1760-19-0x00000288F8470000-0x00000288F8471000-memory.dmp

Filesize
4KB

Download
memory/1760-26-0x0000028880000000-0x0000028881000000-memory.dmp

Filesize
16.0MB

Download
memory/1760-36-0x0000028880000000-0x0000028881000000-memory.dmp

Filesize
16.0MB

Download
memory/1760-37-0x00000288F8470000-0x00000288F8471000-memory.dmp

Filesize
4KB

Download
memory/1760-38-0x0000028880000000-0x0000028881000000-memory.dmp

Filesize
16.0MB

Download
memory/1760-39-0x0000028880000000-0x0000028881000000-memory.dmp

Filesize
16.0MB

Download
memory/1760-40-0x0000028880000000-0x0000028881000000-memory.dmp

Filesize
16.0MB

Download
memory/1760-53-0x00000288F8470000-0x00000288F8471000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads