vjw0rm | 9005a39c203e068daa077fe244e2608d36852dbef6f6ce8b28cc5cc015b89b1b

General

Target

98e3648add4ab0724ebeb54eb720e8ad97ad52b0.js
Size

378KB
MD5

484e1f6925d5957e9d486e420dc010b7
SHA1

98e3648add4ab0724ebeb54eb720e8ad97ad52b0
SHA256

9005a39c203e068daa077fe244e2608d36852dbef6f6ce8b28cc5cc015b89b1b
SHA512

5b32912e30b446357ce6fe626b8136ae3262cdf4c60b7bc56b16171156a8979001a1a52168c0fe34b2b7526379b4519b7b04c86e17e18f40a62b7361acb0617c
SSDEEP

6144:6V0EJTElOz43XdvK4tHOh6WfkHi4FjqWkQ2M4MMPpsiscuzAOgied24iD+:cJMW43NsZghqekPpNqAOgBd7iD+

Score

10^/10

vjw0rm 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
6	4412	wscript.exe
37	4412	wscript.exe
45	4412	wscript.exe
61	4412	wscript.exe
69	4412	wscript.exe

Executes dropped EXE 1 IoCs

pid	Process
2012	bin.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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	bin.exe

Drops startup file 2 IoCs

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2012 set thread context of 2748	2012	bin.exe	19
PID 3648 set thread context of 2748	3648	chkdsk.exe	19

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

pid	pid_target	Process	procid_target
4728	2512	WerFault.exe	92

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 36 IoCs

pid	Process
2012	bin.exe
2012	bin.exe
2012	bin.exe
2012	bin.exe
2012	bin.exe
2012	bin.exe
2012	bin.exe
2012	bin.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2748	Explorer.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2012	bin.exe
2012	bin.exe
2012	bin.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe
3648	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2012	bin.exe
Token: SeDebugPrivilege	3648	chkdsk.exe
Token: SeShutdownPrivilege	2748	Explorer.EXE
Token: SeCreatePagefilePrivilege	2748	Explorer.EXE
Token: SeShutdownPrivilege	2748	Explorer.EXE
Token: SeCreatePagefilePrivilege	2748	Explorer.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2600 wrote to memory of 4412	2600	wscript.exe	82
PID 2600 wrote to memory of 4412	2600	wscript.exe	82
PID 2600 wrote to memory of 2012	2600	wscript.exe	83
PID 2600 wrote to memory of 2012	2600	wscript.exe	83
PID 2600 wrote to memory of 2012	2600	wscript.exe	83
PID 2748 wrote to memory of 3648	2748	Explorer.EXE	88
PID 2748 wrote to memory of 3648	2748	Explorer.EXE	88
PID 2748 wrote to memory of 3648	2748	Explorer.EXE	88
PID 3648 wrote to memory of 2512	3648	chkdsk.exe	92
PID 3648 wrote to memory of 2512	3648	chkdsk.exe	92
PID 3648 wrote to memory of 2512	3648	chkdsk.exe	92

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2748
- C:\Windows\system32\wscript.exe
  wscript.exe C:\Users\Admin\AppData\Local\Temp\98e3648add4ab0724ebeb54eb720e8ad97ad52b0.js
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:2600
- - C:\Windows\System32\wscript.exe
    "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\TzTlSUHDie.js"
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    PID:4412
- - C:\Users\Admin\AppData\Local\Temp\bin.exe
    "C:\Users\Admin\AppData\Local\Temp\bin.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2012
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Enumerates system info in registry
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3648
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2512
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2512 -s 120
      4⤵
      Program crash
      PID:4728

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 448 -p 2512 -ip 2512
1⤵
PID:2960

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\bin.exe

Filesize
185KB

MD5
f9fdfca55156f35ea48a17947d091f4d

SHA1
15f10040cf10535deed5ca028150ed847a585d01

SHA256
7258963be005d6914901a62c591c56427553f62537f86d70965af16dae57c0d0

SHA512
53caa12467706839406c40e8e8a925a67f8c51ddc6abb0bf7db8ca61e03af09714cc954e959c89dae91fb45c07fc113a076e0ab34806933ca7deed520113c302

Download Submit
C:\Users\Admin\AppData\Local\Temp\bin.exe

Filesize
185KB

MD5
f9fdfca55156f35ea48a17947d091f4d

SHA1
15f10040cf10535deed5ca028150ed847a585d01

SHA256
7258963be005d6914901a62c591c56427553f62537f86d70965af16dae57c0d0

SHA512
53caa12467706839406c40e8e8a925a67f8c51ddc6abb0bf7db8ca61e03af09714cc954e959c89dae91fb45c07fc113a076e0ab34806933ca7deed520113c302

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

Filesize
18KB

MD5
90c052e2282de1c12470fc54d62681d9

SHA1
ea069b254dde1f6cad46afedf55c69d4516a0d7a

SHA256
be62476863ca538e76f33e4758a5a5af8609d681026c4e325d8d667470aa9097

SHA512
73661062644236fcd76f689a8271f5f2c875468fbfdd4a4431a2b419c8bc093129345ee9b83d4f87eaa389a1ff12e776ba5d0d5845899931e1b72c32d4cb5ea7

Download Submit
memory/2012-142-0x0000000000F10000-0x0000000000F3F000-memory.dmp

Filesize
188KB

Download
memory/2012-137-0x0000000000F10000-0x0000000000F3F000-memory.dmp

Filesize
188KB

Download
memory/2012-138-0x0000000000BC0000-0x0000000000F0A000-memory.dmp

Filesize
3.3MB

Download
memory/2012-139-0x0000000000A80000-0x0000000000A90000-memory.dmp

Filesize
64KB

Download
memory/2748-140-0x0000000002510000-0x0000000002607000-memory.dmp

Filesize
988KB

Download
memory/2748-146-0x0000000002510000-0x0000000002607000-memory.dmp

Filesize
988KB

Download
memory/2748-149-0x0000000007870000-0x000000000791E000-memory.dmp

Filesize
696KB

Download
memory/2748-150-0x0000000007870000-0x000000000791E000-memory.dmp

Filesize
696KB

Download
memory/3648-143-0x0000000000A80000-0x0000000000A8A000-memory.dmp

Filesize
40KB

Download
memory/3648-144-0x00000000005A0000-0x00000000005CD000-memory.dmp

Filesize
180KB

Download
memory/3648-145-0x0000000000EF0000-0x000000000123A000-memory.dmp

Filesize
3.3MB

Download
memory/3648-147-0x0000000000D20000-0x0000000000DAF000-memory.dmp

Filesize
572KB

Download
memory/3648-148-0x00000000005A0000-0x00000000005CD000-memory.dmp

Filesize
180KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads