vjw0rm | 519955052dbc780a8715890a897911b2131a541fa438cf4903a0e79e3d1976d2

General

Target

INVOICE_73764683737____________.pdf.js
Size

205KB
MD5

bdb8cdd6ed624b3dcbaab3d71df0f0e1
SHA1

89318e4ecb5972b34aca0798dccc9f3c1eebcbce
SHA256

519955052dbc780a8715890a897911b2131a541fa438cf4903a0e79e3d1976d2
SHA512

e5a61f533688207e80e65b3fe02cb247cdce3225c055d7a36167742cb981ac932a221d85aa3bdf6ac6ed5a5b4d383b4c1e9e0c35b01263e4d0e25ca23d1fca81

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Signatures

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

Blocklisted process makes network request 19 IoCs

Processes:

WScript.exe

flow	pid	process
8	4824	WScript.exe
17	4824	WScript.exe
20	4824	WScript.exe
21	4824	WScript.exe
22	4824	WScript.exe
23	4824	WScript.exe
24	4824	WScript.exe
25	4824	WScript.exe
26	4824	WScript.exe
27	4824	WScript.exe
28	4824	WScript.exe
29	4824	WScript.exe
30	4824	WScript.exe
31	4824	WScript.exe
32	4824	WScript.exe
33	4824	WScript.exe
34	4824	WScript.exe
35	4824	WScript.exe
36	4824	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\GrZIvQNaOU.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\GrZIvQNaOU.js	WScript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

WScript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\GrZIvQNaOU.js\""	WScript.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

5048 4904 WerFault.exe javaw.exe
Modifies registry class 1 IoCs

Processes:

wscript.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings wscript.exe

pid	pid_target	process	target process
5048	4904	WerFault.exe	javaw.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings	wscript.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

WerFault.exe

pid	process
5048	WerFault.exe
5048	WerFault.exe
5048	WerFault.exe
5048	WerFault.exe
5048	WerFault.exe
5048	WerFault.exe
5048	WerFault.exe
5048	WerFault.exe
5048	WerFault.exe
5048	WerFault.exe
5048	WerFault.exe
5048	WerFault.exe
5048	WerFault.exe
5048	WerFault.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 5048 WerFault.exe

description	pid	process
Token: SeDebugPrivilege	5048	WerFault.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 4460 wrote to memory of 4824	4460	wscript.exe	WScript.exe
PID 4460 wrote to memory of 4824	4460	wscript.exe	WScript.exe
PID 4460 wrote to memory of 4904	4460	wscript.exe	javaw.exe
PID 4460 wrote to memory of 4904	4460	wscript.exe	javaw.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\INVOICE_73764683737____________.pdf.js
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4460

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\GrZIvQNaOU.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:4824

C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe
"C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\fcripmbi.txt"
2⤵
PID:4904

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 4904 -s 352
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5048

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\GrZIvQNaOU.js
MD5
d90968188c569763a8539c1ea7ba2d6b

SHA1
4c8f3907474292c50561cfdfe469e926b5d27910

SHA256
78ecdd57e761e4d0c9336643bcd95d5b5946c05efd752c5b803681f5083eb0bb

SHA512
bb28eca56a5b57f8c0cdb1c86928598a13428dd652a0a37fc9039ecd57d2e17d80519c94cf2adf3f5fce37ee726c861a4c10d3f3e106b3fa08ef02375850b953

Download Submit
C:\Users\Admin\AppData\Roaming\fcripmbi.txt
MD5
2e458a59025b390fbdf7d3717314b507

SHA1
d5a84f501bfa81682ebde5e31a68794140141785

SHA256
6b723bd260b53c68c716ef218c78718d3e99ab4d4238a4bd823fd0cd6ec8007b

SHA512
2b463bc4ef98264560abad47053549c463fc9ee098c97cd60d58c959ba67f4ddf2ca60856f6564802a9f056740fbedbb6bdc829388c136c13b334563465d1f22

Download Submit
memory/4824-114-0x0000000000000000-mapping.dmp

Download
memory/4904-116-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads