vjw0rm | 18e730c58a9d2c93e49fa190c3443891e8015f680985a84e7e811790bee24965

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25/09/2024, 21:54

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General

Target
f6edd0eac50f2a0efd32bff77c3af7c7_JaffaCakes118.exe
Size 903KB
Sample240925-1r76razcnp
SHA256 18e730c58a9d2c93e49fa190c3443891e8015f680985a84e7e811790bee24965
MD5 f6edd0eac50f2a0efd32bff77c3af7c7
SHA1 4776b641c07d6320b5657e3e14dfaec2c3ef120a
SHA512 889cc71cd5de0eca2cab5d83aade9734807d30c237dcbbea26e24ea6d2c6cb4c40ce3c501c4ab3084ca16b256c12fff05b6193e53df55198c9bf418b546aa73b
SSDEEP 24576:tAHnh+eWsN3skA4RV1Hom2KXMmHa8TmwHV5:Mh+ZkldoPK8Ya8TmU
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

vjw0rm discovery execution trojan worm

Malware Config

Signatures

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

Blocklisted process makes network request 5 IoCs

flow	pid	Process
36	4264	WScript.exe
42	4264	WScript.exe
44	4264	WScript.exe
49	4264	WScript.exe
50	4264	WScript.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	f6edd0eac50f2a0efd32bff77c3af7c7_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\OneDrive.js	f6edd0eac50f2a0efd32bff77c3af7c7_JaffaCakes118.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f6edd0eac50f2a0efd32bff77c3af7c7_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000_Classes\Local Settings	f6edd0eac50f2a0efd32bff77c3af7c7_JaffaCakes118.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
868	schtasks.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2468 wrote to memory of 4264	2468	f6edd0eac50f2a0efd32bff77c3af7c7_JaffaCakes118.exe	90
PID 2468 wrote to memory of 4264	2468	f6edd0eac50f2a0efd32bff77c3af7c7_JaffaCakes118.exe	90
PID 2468 wrote to memory of 4264	2468	f6edd0eac50f2a0efd32bff77c3af7c7_JaffaCakes118.exe	90
PID 4264 wrote to memory of 868	4264	WScript.exe	91
PID 4264 wrote to memory of 868	4264	WScript.exe	91
PID 4264 wrote to memory of 868	4264	WScript.exe	91

C:\Users\Admin\AppData\Local\Temp\f6edd0eac50f2a0efd32bff77c3af7c7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f6edd0eac50f2a0efd32bff77c3af7c7_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops startup file
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2468
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\OneDrive.js"
  2⤵
  - Blocklisted process makes network request
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4264
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\OneDrive.js
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:868

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

autC14C.tmp

Path C:\Users\Admin\AppData\Local\Temp\autC14C.tmp
Size 6KB
SHA256 661f52553c374d882dbcd5e8b1c7cbe8431e31a56b619b080348dd7e1de46e6d
MD5 ee4ec8513de7ae050c9bb51431a187ee
SHA1 05a2d86a1f73ebc5911cdcef1a95f146bdb08243
SHA512 a7d015deea0091296f2da9cd63d4aa4cffa05c66bca6be0908a87b39fe4664cbbedd19f4ae4201a0426f231afdc64f0d62864421574ecf3ac878752e63b00307
SSDEEP 192:LVGCnDuc2RXbVNVeqaV7aWKlRKPHiMlLn3G+6BX:xRD92RXxNQaTRgh3pc
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads