vjw0rm | cd6b788372fc6c577a7f0de514ee7a4ed42da59b866581ddeb0e6c38228428d3

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
23/12/2022, 17:40

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General

Target

AWB#75698789.pdf.js
Size

260KB
MD5

ec87b49270ad1afb170890fc4644bd59
SHA1

997f47e7d0bd7bc4ba59c2b737c0b5e108858b62
SHA256

cd6b788372fc6c577a7f0de514ee7a4ed42da59b866581ddeb0e6c38228428d3
SHA512

2daa9b36563380a3d55f2a0ec8ddbd1b8fe5d045acb9b98fb210af0e861ed523adef67ee791680e9a9608733e89ba274507ed2405ac9191f62e01f709f19162f
SSDEEP

6144:EPP/pyxHpiGSxCXJZTv+jCtMX1/MJIUDKi:EPHpyR17r+jCtMl/kD9

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 53 IoCs

flow	pid	Process
10	1380	wscript.exe
12	1380	wscript.exe
13	1112	wscript.exe
14	1516	wscript.exe
16	1380	wscript.exe
17	1112	wscript.exe
18	1516	wscript.exe
21	1380	wscript.exe
23	1112	wscript.exe
24	1516	wscript.exe
29	1380	wscript.exe
32	1516	wscript.exe
33	1112	wscript.exe
35	1380	wscript.exe
36	1380	wscript.exe
38	1516	wscript.exe
40	1112	wscript.exe
43	1380	wscript.exe
45	1516	wscript.exe
46	1112	wscript.exe
50	1380	wscript.exe
51	1112	wscript.exe
52	1516	wscript.exe
55	1380	wscript.exe
58	1516	wscript.exe
60	1380	wscript.exe
61	1112	wscript.exe
63	1380	wscript.exe
64	1516	wscript.exe
66	1112	wscript.exe
69	1380	wscript.exe
73	1516	wscript.exe
74	1112	wscript.exe
75	1380	wscript.exe
77	1112	wscript.exe
79	1516	wscript.exe
81	1380	wscript.exe
83	1380	wscript.exe
84	1112	wscript.exe
86	1516	wscript.exe
90	1380	wscript.exe
92	1112	wscript.exe
94	1516	wscript.exe
96	1380	wscript.exe
97	1112	wscript.exe
98	1516	wscript.exe
101	1380	wscript.exe
103	1112	wscript.exe
105	1380	wscript.exe
107	1516	wscript.exe
110	1380	wscript.exe
112	1112	wscript.exe
114	1516	wscript.exe

Drops startup file 5 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\AWB#75698789.pdf.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PQqoNmhZsB.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PQqoNmhZsB.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\AWB#75698789.pdf.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PQqoNmhZsB.js	wscript.exe

Adds Run key to start application 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\AWB#75698789 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\AWB#75698789.pdf.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AWB#75698789 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\AWB#75698789.pdf.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\AWB#75698789 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\AWB#75698789.pdf.js\""	wscript.exe
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AWB#75698789 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\AWB#75698789.pdf.js\""	wscript.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
7	ip-api.com

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1580 wrote to memory of 1516	1580	wscript.exe	28
PID 1580 wrote to memory of 1516	1580	wscript.exe	28
PID 1580 wrote to memory of 1516	1580	wscript.exe	28
PID 1580 wrote to memory of 1380	1580	wscript.exe	29
PID 1580 wrote to memory of 1380	1580	wscript.exe	29
PID 1580 wrote to memory of 1380	1580	wscript.exe	29
PID 1380 wrote to memory of 1112	1380	wscript.exe	31
PID 1380 wrote to memory of 1112	1380	wscript.exe	31
PID 1380 wrote to memory of 1112	1380	wscript.exe	31

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\AWB#75698789.pdf.js
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1580
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\PQqoNmhZsB.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:1516
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\AWB#75698789.pdf.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1380
- - C:\Windows\System32\wscript.exe
    "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\PQqoNmhZsB.js"
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    PID:1112

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\AWB#75698789.pdf.js

Filesize
260KB

MD5
ec87b49270ad1afb170890fc4644bd59

SHA1
997f47e7d0bd7bc4ba59c2b737c0b5e108858b62

SHA256
cd6b788372fc6c577a7f0de514ee7a4ed42da59b866581ddeb0e6c38228428d3

SHA512
2daa9b36563380a3d55f2a0ec8ddbd1b8fe5d045acb9b98fb210af0e861ed523adef67ee791680e9a9608733e89ba274507ed2405ac9191f62e01f709f19162f

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\AWB#75698789.pdf.js

Filesize
260KB

MD5
ec87b49270ad1afb170890fc4644bd59

SHA1
997f47e7d0bd7bc4ba59c2b737c0b5e108858b62

SHA256
cd6b788372fc6c577a7f0de514ee7a4ed42da59b866581ddeb0e6c38228428d3

SHA512
2daa9b36563380a3d55f2a0ec8ddbd1b8fe5d045acb9b98fb210af0e861ed523adef67ee791680e9a9608733e89ba274507ed2405ac9191f62e01f709f19162f

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PQqoNmhZsB.js

Filesize
6KB

MD5
a46a00fce7c7561dd03f37519c548491

SHA1
d707d5893467538b1ef934900fa7953b0ba3be37

SHA256
db64faff8266eb46d6e649170da234562332aeb11b6e7adc3073739906a8592b

SHA512
61295739a668d5c286bce20c643e2b1498ffc2f4a2873177b655bf9b8fe534c041a12da95ffa0552e1b76ba2ad09344d5bfc70ba09e03a43d08f01a59f992f8c

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

Filesize
6KB

MD5
a46a00fce7c7561dd03f37519c548491

SHA1
d707d5893467538b1ef934900fa7953b0ba3be37

SHA256
db64faff8266eb46d6e649170da234562332aeb11b6e7adc3073739906a8592b

SHA512
61295739a668d5c286bce20c643e2b1498ffc2f4a2873177b655bf9b8fe534c041a12da95ffa0552e1b76ba2ad09344d5bfc70ba09e03a43d08f01a59f992f8c

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

Filesize
6KB

MD5
a46a00fce7c7561dd03f37519c548491

SHA1
d707d5893467538b1ef934900fa7953b0ba3be37

SHA256
db64faff8266eb46d6e649170da234562332aeb11b6e7adc3073739906a8592b

SHA512
61295739a668d5c286bce20c643e2b1498ffc2f4a2873177b655bf9b8fe534c041a12da95ffa0552e1b76ba2ad09344d5bfc70ba09e03a43d08f01a59f992f8c

Download Submit
memory/1580-54-0x000007FEFB8A1000-0x000007FEFB8A3000-memory.dmp

Filesize
8KB

Download