vjw0rm | 7a2fd40a032e726bde8638b079963c499d20c7c197a0f91544f458977fbd3304

General

Target

8fed7262f75ec7c978a03e8177dfadab.js
Size

469KB
MD5

8fed7262f75ec7c978a03e8177dfadab
SHA1

3c95b2b69114082581b28a34533cbcddefd72516
SHA256

7a2fd40a032e726bde8638b079963c499d20c7c197a0f91544f458977fbd3304
SHA512

22a2ca24da0dd5d7a665d84fc58cc36013716d4605518f3c035d0bc5e6944825267e332708eb26623cba4e2d7b57b395caab6c5628b9e88f510fb23a8871e9f2
SSDEEP

6144:Qy6COPsZV2SvRmFgI9smdixnlahHhUgy6COPsZV2SvRmFgI9smdixnlahHhUt:wux5mFg6slxuKAux5mFg6slxuKt

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-1-5-21-2398549320-3657759451-817663969-1000\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\kgjBVaIrAu.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\kgjBVaIrAu.js	WScript.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
468	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-1-5-21-2398549320-3657759451-817663969-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\0HKX5ALWLG = "\"C:\\Users\\Admin\\AppData\\Roaming\\kgjBVaIrAu.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\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\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\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\symbols\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\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

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-1-5-21-2398549320-3657759451-817663969-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4844 wrote to memory of 4812	4844	wscript.exe	84
PID 4844 wrote to memory of 4812	4844	wscript.exe	84
PID 4844 wrote to memory of 4888	4844	wscript.exe	85
PID 4844 wrote to memory of 4888	4844	wscript.exe	85
PID 4888 wrote to memory of 468	4888	javaw.exe	88
PID 4888 wrote to memory of 468	4888	javaw.exe	88

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\8fed7262f75ec7c978a03e8177dfadab.js
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4844
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\kgjBVaIrAu.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:4812
- 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\yvoyewuofo.txt"
  2⤵
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4888
- - 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:468

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
800cf5038ad09ac4c132a38b060be8f5

SHA1
dab81aa263e5630a031d0cb0ec9ab10adb88bdd1

SHA256
debcae1e85604209102bf1a6016aa11587692e247e4d0254daf08cf86d5b32c1

SHA512
033a58509adef2ef8c9608acc881fdd4b43a739abe30c8a250b52341fc4fa8d7704ea42e5749f4b00298df4c323d4cb448e4208c299f64c262a369ade538731f

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

Filesize
14KB

MD5
f74ee95cc8fbe51c705384a7dcc5a701

SHA1
b15a636ca2ce2f45dd466e5ee463f1cfed9fd64b

SHA256
a86309235858dbc9f91f1a8405a3599a70f2394b7671889c9f6a1b05831c3407

SHA512
e68783102258f983e31d4ffd7f4b532957072207dad9b892f388924d17e8909ac21cb59d823cd3dcedb066f69ac9053c8992cc40204f86798932eef2179d3ad6

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

Filesize
107KB

MD5
e38670aa13e73105b5b518779c4983df

SHA1
dbed21eea88ad1574999e3db2b6d7eb19b5a2979

SHA256
e0141d12da8d9172a5ea7bad725a5f0c4a766473b914d1f6b2b1485a7eeadf8f

SHA512
f2fa507968f7c817ca55001215610a39cebd35ab76696593f87efc7f504572e2da3cdf5355c80cb420eb767dee950b5a7b71f83ba898ac08ac11f6be099c397e

Download Submit
memory/4888-38-0x000002ABA3790000-0x000002ABA3791000-memory.dmp

Filesize
4KB

Download
memory/4888-19-0x000002ABA3790000-0x000002ABA3791000-memory.dmp

Filesize
4KB

Download
memory/4888-25-0x000002ABA5060000-0x000002ABA6060000-memory.dmp

Filesize
16.0MB

Download
memory/4888-11-0x000002ABA5060000-0x000002ABA6060000-memory.dmp

Filesize
16.0MB

Download
memory/4888-39-0x000002ABA5060000-0x000002ABA6060000-memory.dmp

Filesize
16.0MB

Download
memory/4888-50-0x000002ABA3790000-0x000002ABA3791000-memory.dmp

Filesize
4KB

Download
memory/4888-54-0x000002ABA5060000-0x000002ABA6060000-memory.dmp

Filesize
16.0MB

Download
memory/4888-53-0x000002ABA3790000-0x000002ABA3791000-memory.dmp

Filesize
4KB

Download
memory/4888-59-0x000002ABA5060000-0x000002ABA6060000-memory.dmp

Filesize
16.0MB

Download
memory/4888-62-0x000002ABA3790000-0x000002ABA3791000-memory.dmp

Filesize
4KB

Download
memory/4888-64-0x000002ABA5060000-0x000002ABA6060000-memory.dmp

Filesize
16.0MB

Download
memory/4888-116-0x000002ABA5410000-0x000002ABA5420000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads