vjw0rm | dd4296bc6397703d32c73bbda6dd2c497efc93af64a4e014b4803a00454225bf

General

Target

__output.js
Size

193KB
MD5

4318853a176d5131f68bb12610cf3c97
SHA1

79d939eefc5aede217e216934bc8b83271507aa8
SHA256

dd4296bc6397703d32c73bbda6dd2c497efc93af64a4e014b4803a00454225bf
SHA512

eac3796038e521799ad8e043fcac06e35b7f980530b5e34cd44b7e876f591223aaf21ff280b3249e01550d66d8922f589cf019a04884b2c3a69f3da1c7f3f4ca

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 64 IoCs

Processes:

WScript.exe

flow	pid	process
6	3940	WScript.exe
17	3940	WScript.exe
18	3940	WScript.exe
19	3940	WScript.exe
20	3940	WScript.exe
21	3940	WScript.exe
22	3940	WScript.exe
23	3940	WScript.exe
24	3940	WScript.exe
25	3940	WScript.exe
26	3940	WScript.exe
27	3940	WScript.exe
28	3940	WScript.exe
29	3940	WScript.exe
30	3940	WScript.exe
31	3940	WScript.exe
32	3940	WScript.exe
33	3940	WScript.exe
34	3940	WScript.exe
35	3940	WScript.exe
36	3940	WScript.exe
37	3940	WScript.exe
38	3940	WScript.exe
39	3940	WScript.exe
40	3940	WScript.exe
41	3940	WScript.exe
42	3940	WScript.exe
43	3940	WScript.exe
50	3940	WScript.exe
51	3940	WScript.exe
52	3940	WScript.exe
53	3940	WScript.exe
54	3940	WScript.exe
55	3940	WScript.exe
56	3940	WScript.exe
58	3940	WScript.exe
59	3940	WScript.exe
60	3940	WScript.exe
61	3940	WScript.exe
62	3940	WScript.exe
63	3940	WScript.exe
64	3940	WScript.exe
65	3940	WScript.exe
66	3940	WScript.exe
67	3940	WScript.exe
68	3940	WScript.exe
69	3940	WScript.exe
70	3940	WScript.exe
71	3940	WScript.exe
72	3940	WScript.exe
73	3940	WScript.exe
74	3940	WScript.exe
75	3940	WScript.exe
76	3940	WScript.exe
77	3940	WScript.exe
78	3940	WScript.exe
79	3940	WScript.exe
80	3940	WScript.exe
81	3940	WScript.exe
82	3940	WScript.exe
83	3940	WScript.exe
84	3940	WScript.exe
85	3940	WScript.exe
86	3940	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\GySjyuTJbo.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\GySjyuTJbo.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-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\GySjyuTJbo.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

3256 3888 WerFault.exe javaw.exe
Modifies registry class 1 IoCs

Processes:

wscript.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings wscript.exe

pid	pid_target	process	target process
3256	3888	WerFault.exe	javaw.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings	wscript.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

WerFault.exe

pid	process
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe
3256	WerFault.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WerFault.exe

description pid process

Token: SeDebugPrivilege 3256 WerFault.exe

description	pid	process
Token: SeDebugPrivilege	3256	WerFault.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 620 wrote to memory of 3940	620	wscript.exe	WScript.exe
PID 620 wrote to memory of 3940	620	wscript.exe	WScript.exe
PID 620 wrote to memory of 3888	620	wscript.exe	javaw.exe
PID 620 wrote to memory of 3888	620	wscript.exe	javaw.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\__output.js
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:620

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\GySjyuTJbo.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:3940

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\axlkoc.txt"
2⤵
PID:3888

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 3888 -s 356
3⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3256

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\GySjyuTJbo.js

MD5
f62440f09898b39fea134065ef66629f

SHA1
6481a10130d0f04b618edffe25e447f361b610bd

SHA256
44c4da720bcd803731900f96e48662ea55da18b4fdcf1152192ca4322b9cb328

SHA512
cfdd9fe2ab94e698d6616e1a4143a0ecbb970f01259ce555fded0673a605e1b0799ed877a77c011b9ce0cf912c3fc3d693bb9796253199321606e9136b38b33f

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

MD5
468ec549c270898563a0d61e42a3bd17

SHA1
6bbd046226d2a87abd4e24d9831e029d97f5e0c7

SHA256
ba97fd311dcae06ced279a1a5503252c7c0986a28e4168f0f96b4afcbcb7f79b

SHA512
e9071cd00f5c12810e08655f9dedd740fa3052132467a1596056d986a505d980fde4a0bac0d9ff573b630fd0c5b4aeec05b878bd3d05c549e9745fe26dbc8039

Download Submit
memory/3888-116-0x0000000000000000-mapping.dmp

Download
memory/3940-114-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads