vjw0rm | ae33e9f2e18d4fdd25db5bc30b8b8bdd63b53794e225dbe818ebe65a29b0dc95

General

Target

d82b9d7af67f2ade0c11bfe6bfd69544.jar
Size

129KB
MD5

d82b9d7af67f2ade0c11bfe6bfd69544
SHA1

051c9770aebcc850ae09baa6a223848a7aa3f289
SHA256

ae33e9f2e18d4fdd25db5bc30b8b8bdd63b53794e225dbe818ebe65a29b0dc95
SHA512

fbfc1943e95be1d5c9a536e2aa9267b188eb81e9c9445074c2b69d01f7d092c0d1590e15c8579da0c6ab1ba97e1767cd5a2984a1eb6e08611df3fec5764dc555
SSDEEP

3072:PdaZuzVCyUNstfAQyHuAYWgPNr6K5V3I/Iy7+itIlhGDbmC:PNIsNyH/LgPNrPH4/I7jhGDb

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

Processes:

wscript.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

Processes:

WScript.exe

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

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

4376 icacls.exe

pid	process
4376	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

WScript.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\DGjEIUIodz.js\""	WScript.exe

Drops file in Program Files directory 12 IoCs

Processes:

javaw.exe

description	ioc	process
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\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\ntdll.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\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
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

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

System Information Discovery
T1082
Modifies registry class 1 IoCs

Processes:

wscript.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000_Classes\Local Settings wscript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

java.exewscript.exe

description	pid	process	target process
PID 3896 wrote to memory of 4376	3896	java.exe	icacls.exe
PID 3896 wrote to memory of 4376	3896	java.exe	icacls.exe
PID 3896 wrote to memory of 1476	3896	java.exe	wscript.exe
PID 3896 wrote to memory of 1476	3896	java.exe	wscript.exe
PID 1476 wrote to memory of 3164	1476	wscript.exe	WScript.exe
PID 1476 wrote to memory of 3164	1476	wscript.exe	WScript.exe
PID 1476 wrote to memory of 4628	1476	wscript.exe	javaw.exe
PID 1476 wrote to memory of 4628	1476	wscript.exe	javaw.exe

C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\d82b9d7af67f2ade0c11bfe6bfd69544.jar
1⤵
- Suspicious use of WriteProcessMemory
PID:3896
- C:\Windows\system32\icacls.exe
  C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
  2⤵
  - Modifies file permissions
  PID:4376
- C:\Windows\SYSTEM32\wscript.exe
  wscript C:\Users\Admin\exohdopokf.js
  2⤵
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1476
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\DGjEIUIodz.js"
    3⤵
    - Drops startup file
    - Adds Run key to start application
    PID:3164
- - 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\yicpbfyb.txt"
    3⤵
    - Drops file in Program Files directory
    PID:4628

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
b4554e405bc25dd07c7023354ec13a2e

SHA1
8382813277367910f1043a7475f153614dc1aae0

SHA256
24f7d7e2fb654e747034f6a2ce8a713473d2d8c95eb27638461e00b7634a845c

SHA512
67419b066e0cf15f0e62c7984f1c966098bdf7e8f2859ba186dbf9e04b3b0dcc5d7469e19b46be0fed0fe3375ae2075194faacbbb17017ea4197ce7b719f9505

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

Filesize
10KB

MD5
f38989cc8aaa486a1d20937d3364715c

SHA1
33dd1be185eba1eb4a6c52182c3df3f53ca6e9a5

SHA256
e582d7660be65f8dcfc39688ea515022baaa734b5fb336e7f2a1e4e19071b4d5

SHA512
c619a61774708eb36cf96b634221dad4d72f0fc5f820866508b0540415ee436b9fcb7779795d7a8f7096f68296e41088d650134c1b67f3a77105a31f9026ed0a

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

Filesize
92KB

MD5
af3ce0807ad734c6e6b2f35d7ddf06ad

SHA1
8b771d227019e07a077aaed04d5f1016ed37cb95

SHA256
a586c03463ca23ecb682d1505492ce375e63f3d7bd26cc12272e716a3f0016d3

SHA512
771e3d25082b3d55e10f42008d363a08756ab437f1c7880911f18d73457e5a8aa599eb6dce52c854955faded427ff17c5a37d755c70304a05eff3f0e7eeadd08

Download Submit
C:\Users\Admin\exohdopokf.js

Filesize
207KB

MD5
b8722654a1ef8fcfebf490bce2492392

SHA1
7669dfc5f9bf91b3231fe30cb052adeb60e5f749

SHA256
87d6eb8714fe79b95f2f74649cd2fef28e9d57e4c4e990d7ac0f0f6281b978f8

SHA512
2ceff57cdf708ebe9c4b3735589045730178bf9914bcebef478c5ec8fa14fcd879c71c5543c7b90faff71f70ed477f1376e070785e2d3bbe52f11397aaec1846

Download Submit
memory/3896-4-0x0000024D3E5A0000-0x0000024D3F5A0000-memory.dmp

Filesize
16.0MB

Download
memory/3896-11-0x0000024D3CD30000-0x0000024D3CD31000-memory.dmp

Filesize
4KB

Download
memory/3896-15-0x0000024D3CD30000-0x0000024D3CD31000-memory.dmp

Filesize
4KB

Download
memory/4628-28-0x0000021EE67C0000-0x0000021EE77C0000-memory.dmp

Filesize
16.0MB

Download
memory/4628-33-0x0000021EE4F00000-0x0000021EE4F01000-memory.dmp

Filesize
4KB

Download
memory/4628-35-0x0000021EE4F00000-0x0000021EE4F01000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads