vjw0rm | 8b89ccf2aeee269572578f39cbe44d8b9eb1e90d6625be8bb005cc5296abc629

General

Target

fc81b118b986d065514814c62ce2959c_JaffaCakes118.js
Size

199KB
MD5

fc81b118b986d065514814c62ce2959c
SHA1

a8c1ed074cc533c5aa6b71a3a527ffbc0493e225
SHA256

8b89ccf2aeee269572578f39cbe44d8b9eb1e90d6625be8bb005cc5296abc629
SHA512

5bf826d4cfbdd6613e4955d4eee3ef0851ad48f0ab3c8eada4c4d57b0b815af8e854d08a95eaf196316fd91f8c84aa2ec7ed5cfef8913757c19ea077e3c4a6e7
SSDEEP

3072:lritC+1MYgCc1doOgng49ooBP/GmhWi5eTIQ+vZzMd3efZeb9sHts649mPnhXe:4ggnTWq/TH1AsW6Ksle

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-1-5-21-2288054676-1871194608-3559553667-1000\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\QUKoVKgJQp.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\QUKoVKgJQp.js	WScript.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3572	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-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\QUKoVKgJQp.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\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\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\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
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\ntdll.pdb	javaw.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\dll\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-1-5-21-2288054676-1871194608-3559553667-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4884 wrote to memory of 2024	4884	wscript.exe	85
PID 4884 wrote to memory of 2024	4884	wscript.exe	85
PID 4884 wrote to memory of 2216	4884	wscript.exe	86
PID 4884 wrote to memory of 2216	4884	wscript.exe	86
PID 2216 wrote to memory of 3572	2216	javaw.exe	88
PID 2216 wrote to memory of 3572	2216	javaw.exe	88

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\fc81b118b986d065514814c62ce2959c_JaffaCakes118.js
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4884
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\QUKoVKgJQp.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:2024
- 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\rtxclbgn.txt"
  2⤵
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:2216
- - 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:3572

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
4cd135f3dbacfb4a2f944e7be7881b9f

SHA1
f8e52fe96c741380f682d5e334175d0498edb399

SHA256
e59063f3dcb8dc22aa22635dc1159998f697e9b72b48c57b64d2cb9a1aa8f943

SHA512
9dd1e3d9195b771ea0872eef76523b8b177b9c70c2656724461de181631ab04a962940bcee9fc2459dcd2908c9c62a0b378604ed974fd20fd1fbbce6744020c4

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

Filesize
10KB

MD5
20db8f29d1db93e67b8b2ad6196d9e37

SHA1
ce499527cae2ea611057d5dc952132b0d948eba4

SHA256
349e780cca53f741459e1da002e177b536bf4eb7c69f5d3efaa6c4287bcfa985

SHA512
71950c00ace082834e8b13ccc869a5d13c1ee0fe83e170ea3714b0a4279bad2d560f2dd6c2f200bddd4a00b241ff6553db9f6c8156cda7b60f0c08629512bfd3

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

Filesize
89KB

MD5
7873269dd388d4ff3dbe9f020e121e89

SHA1
d50b0740bab0ebc4cf6b3cc4c586632f6dc9e13e

SHA256
bc12cbf509a1f5bff1dea9896aae44b9bc119115bf38349f6caabbbf99e0e919

SHA512
36fdd31209b3448dc32100f733c048b063521bade50a5dd8a3945b7acc5b504115036a6c37bf37ac99b31cf4f94a63b7040224bcf5d8b0c3d2bc93e4bb0fc818

Download Submit
memory/2216-11-0x0000023A346D0000-0x0000023A356D0000-memory.dmp

Filesize
16.0MB

Download
memory/2216-19-0x0000023A32E90000-0x0000023A32E91000-memory.dmp

Filesize
4KB

Download
memory/2216-23-0x0000023A346D0000-0x0000023A356D0000-memory.dmp

Filesize
16.0MB

Download
memory/2216-24-0x0000023A346D0000-0x0000023A356D0000-memory.dmp

Filesize
16.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads