vjw0rm | 145f869eddd77064bf0238142318242b67d4b8f0d731595a2c85560696486ea6

General

Target

17a841e42f40423054ffebc9b5e61103.js
Size

218KB
MD5

17a841e42f40423054ffebc9b5e61103
SHA1

8c51a8dcd3580b80ceb7b9d90d19853c77bcb3eb
SHA256

145f869eddd77064bf0238142318242b67d4b8f0d731595a2c85560696486ea6
SHA512

4a80a7b1905734e961a1d9e0210f77be62ca6f5002f2a7d5a2f755b4c23eb693ccea593a910bcb6c723f02e3f1f4c83dda07e8a710131b79fd2e41a558ecdc66
SSDEEP

3072:wYrEQw480xR5JClJsw4Kd9CPSqSgPCamwYBOz++ucpqH5PSfL2a5YgjTZctPUIw5:qQq0P5SGwrG6qBnpucpqZPoP5YKZTV

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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

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

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3992	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-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\huhTRxnPDW.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\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\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\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
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\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\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-1-5-21-983843758-932321429-1636175382-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4772 wrote to memory of 1240	4772	wscript.exe	90
PID 4772 wrote to memory of 1240	4772	wscript.exe	90
PID 4772 wrote to memory of 632	4772	wscript.exe	91
PID 4772 wrote to memory of 632	4772	wscript.exe	91
PID 632 wrote to memory of 3992	632	javaw.exe	94
PID 632 wrote to memory of 3992	632	javaw.exe	94

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\17a841e42f40423054ffebc9b5e61103.js
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4772
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\huhTRxnPDW.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:1240
- 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\rrgmazo.txt"
  2⤵
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:632
- - 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:3992

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
d0cb11fbf4eb5a7f1e28d6642324a9e6

SHA1
c59bd55b1003d8cca8905485e570b0b7e656ab2b

SHA256
fd2688c850ccbdaadcb9b85fd6692b7864949c4f04a059bb731843563c594b7b

SHA512
6d176e392e639f03c991f3f8c116783dd66274a5e8f7993183f99301d24eabe99e307fba85a2b80cd5ccaee4aa3d3fd276c00dc322a5a0bf79fa6302a14a5661

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

Filesize
9KB

MD5
751a1e074de98bcbbf4bfc91cc6dcf7e

SHA1
d225c87ba8d6e5d4ce0186b978801221c762e5e4

SHA256
4d1c15c3b7a5f3b6d40947e82cb9f8f42235274ccf31b6cb3ae635b0fc2b7605

SHA512
b55d3017d3386733c255652a682287082bb05508324db33b93dddaec7bed1c55e0488d9825c292c9a503f7c80e497d04ec1bc2233fa14d15692dfaa151bf54f5

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

Filesize
102KB

MD5
d30db43fa4de3d1c86d88199fd218672

SHA1
f87e903271b69f5dc3dc5b1da84dca781a838247

SHA256
e3c140f5c4fa10ef365115cfa71f73b3a503313cf94068365472bb431e91e7e1

SHA512
ba7a5fb9a375a5e1edaf9821d3de2d466a2649cfc4a690170c0c295b7b98fdad9577427a45f6938a7c4ecd827e7554e70175a36f4dfbeb2f7d25f8d22de707ca

Download Submit
memory/632-50-0x000001FC00340000-0x000001FC00350000-memory.dmp

Filesize
64KB

Download
memory/632-47-0x000001FC00000000-0x000001FC01000000-memory.dmp

Filesize
16.0MB

Download
memory/632-21-0x000001FC76B60000-0x000001FC76B61000-memory.dmp

Filesize
4KB

Download
memory/632-24-0x000001FC00000000-0x000001FC01000000-memory.dmp

Filesize
16.0MB

Download
memory/632-33-0x000001FC00000000-0x000001FC01000000-memory.dmp

Filesize
16.0MB

Download
memory/632-38-0x000001FC76B60000-0x000001FC76B61000-memory.dmp

Filesize
4KB

Download
memory/632-48-0x000001FC00280000-0x000001FC00290000-memory.dmp

Filesize
64KB

Download
memory/632-11-0x000001FC00000000-0x000001FC01000000-memory.dmp

Filesize
16.0MB

Download
memory/632-49-0x000001FC002F0000-0x000001FC00300000-memory.dmp

Filesize
64KB

Download
memory/632-18-0x000001FC76B60000-0x000001FC76B61000-memory.dmp

Filesize
4KB

Download
memory/632-51-0x000001FC002B0000-0x000001FC002C0000-memory.dmp

Filesize
64KB

Download
memory/632-52-0x000001FC002C0000-0x000001FC002D0000-memory.dmp

Filesize
64KB

Download
memory/632-53-0x000001FC002D0000-0x000001FC002E0000-memory.dmp

Filesize
64KB

Download
memory/632-54-0x000001FC002E0000-0x000001FC002F0000-memory.dmp

Filesize
64KB

Download
memory/632-55-0x000001FC00310000-0x000001FC00320000-memory.dmp

Filesize
64KB

Download
memory/632-56-0x000001FC00320000-0x000001FC00330000-memory.dmp

Filesize
64KB

Download
memory/632-57-0x000001FC00330000-0x000001FC00340000-memory.dmp

Filesize
64KB

Download
memory/632-59-0x000001FC00350000-0x000001FC00360000-memory.dmp

Filesize
64KB

Download
memory/632-58-0x000001FC00000000-0x000001FC01000000-memory.dmp

Filesize
16.0MB

Download
memory/632-60-0x000001FC00000000-0x000001FC01000000-memory.dmp

Filesize
16.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads