vjw0rm | ce8e23a1309e4fbe54a48d36c5c68af97df72073acce4a930df3246a34a75f32

Analysis

max time kernel
143s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
22/12/2023, 12:54

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General

Target
9154158d95df39303de36b475a790529.js
Size 207KB
Sample231222-p49dsseab6
SHA256 ce8e23a1309e4fbe54a48d36c5c68af97df72073acce4a930df3246a34a75f32
MD5 9154158d95df39303de36b475a790529
SHA1 b79ad43d110887b9302bbfca092517a1fb0f43f3
SHA512 de36f4d45c7b03f8cb70498bfd7a9285303814eb20a9a7f09a7855db6daacf817e4e6a0f63f6e63dd46b8bff7d4704155daa4fb2e9ca5a4902957dead3ee7a82
SSDEEP 6144:Fsz4hHiD3tMMqaMqKg+CJpjEwIjzHAOweb:FfimpXUJpa3r
MD5 SHA1 SHA512 SSDEEP

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-1-5-21-3791175113-1062217823-1177695025-1000\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\WOChiHyFPM.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WOChiHyFPM.js	WScript.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
4916	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-1-5-21-3791175113-1062217823-1177695025-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\WOChiHyFPM.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\dll\ntdll.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\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\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\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\server\symbols\dll\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-1-5-21-3791175113-1062217823-1177695025-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 940	1924	wscript.exe	91
PID 1924 wrote to memory of 940	1924	wscript.exe	91
PID 1924 wrote to memory of 2608	1924	wscript.exe	92
PID 1924 wrote to memory of 2608	1924	wscript.exe	92
PID 2608 wrote to memory of 4916	2608	javaw.exe	94
PID 2608 wrote to memory of 4916	2608	javaw.exe	94

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\9154158d95df39303de36b475a790529.js
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\WOChiHyFPM.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:940
- 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\ypoxbwojq.txt"
  2⤵
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:2608
- - 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:4916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

3903daac9bc4a3b7.timestamp

Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
Size 46B
SHA256 6cb261b10133750f5a02dccf5ae96c3d50fae9ad3b62e8d80f4adbf70d4969ee
MD5 55644bb2e65b1ea504fc4eeb028b83e1
SHA1 226cc4d5f8843f29f00a727d48559e1ca47afc07
SHA512 085c7d12c25f6c95963ee54283b0f6240530b4f0b8223b418e3384c2883c5dce7013e5e4c32231cace4937d1e8a54252b3e7a06e106512363287e73e92777392
MD5 SHA1 SHA512

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WOChiHyFPM.js

Path C:\Users\Admin\AppData\Roaming\WOChiHyFPM.js
Size 10KB
SHA256 d9d12a49414db2909da558bed4013e0987fe61140f3c4e17501800ac32d422f7
MD5 5f1405a47e8cf0bc0188332a4a791761
SHA1 638fe4be43f13d79266be5ee35b7879fdeafc71a
SHA512 d2e722dea389123c24534bc661352a7bf42188b47428bb24f1507db4b68f0d47e49b3f95d8cab3f7d5470aa31f51fa72be5d63a4560e785d04860d2a5bd54313
SSDEEP 192:Md+WAKOib4YkL5p4dF/J1u5r8mlEkQKUpvRLcJdyiCl3lWQfCGISTwkxb:MrapU/Jkj+kQxZhl3lrISTwkxb
MD5 SHA1 SHA512 SSDEEP

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ypoxbwojq.txt

Path C:\Users\Admin\AppData\Roaming\ypoxbwojq.txt
Size 92KB
SHA256 6b723bd260b53c68c716ef218c78718d3e99ab4d4238a4bd823fd0cd6ec8007b
MD5 2e458a59025b390fbdf7d3717314b507
SHA1 d5a84f501bfa81682ebde5e31a68794140141785
SHA512 2b463bc4ef98264560abad47053549c463fc9ee098c97cd60d58c959ba67f4ddf2ca60856f6564802a9f056740fbedbb6bdc829388c136c13b334563465d1f22
SSDEEP 1536:vs/x1Af8P1j9QP1+j8ucLnnGS0Ps2ap0cpLs2jrT/Z3heJDgHGvAvxJp8HrC7:vsMf8P1RQQjIGRPfaec9s2/TeJDJvlLC
MD5 SHA1 SHA512 SSDEEP

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memory/2608-11-0x0000018066720000-0x0000018067720000-memory.dmp

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memory/2608-19-0x0000018066700000-0x0000018066701000-memory.dmp

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memory/2608-27-0x00000180669B0000-0x00000180669C0000-memory.dmp

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memory/2608-26-0x0000018066720000-0x0000018067720000-memory.dmp

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memory/2608-28-0x00000180669A0000-0x00000180669B0000-memory.dmp

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memory/2608-29-0x00000180669C0000-0x00000180669D0000-memory.dmp

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memory/2608-30-0x0000018066720000-0x0000018067720000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads