vjw0rm | 31f5c289daf8c7fa2c8652f1686e208f6d25784bc9bed2a166c906031e70d449

Analysis

max time kernel
159s
max time network
169s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2023, 05:06

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General

Target
0f8ef908f483815d049a4c34433b89a0.js
Size 205KB
Sample231230-frw39sdfe7
SHA256 31f5c289daf8c7fa2c8652f1686e208f6d25784bc9bed2a166c906031e70d449
MD5 0f8ef908f483815d049a4c34433b89a0
SHA1 2179ad62490090265247159dc8fe485c15df971f
SHA512 cce76b71dfb9537b3489ed921ccd9e610f43c1c047df44f0a10252f78b6484df7aa0a49eb193ebb11c9c388dffe89901f10a8bcaebfad57824eb102f5a5c7de1
SSDEEP 3072:6Bxt7tTuqdZUBME61Kyv6uh9Gy2B2ajLMQ3bKCnXu0r4uJ93U5Jcbovg:45tJZKMD1Ktuh8ysJHMQ3brnVn9c2F
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-1-5-21-3073191680-435865314-2862784915-1000\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\mtdbwLCheS.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mtdbwLCheS.js	WScript.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3288	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-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\mtdbwLCheS.js\""	WScript.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-1-5-21-3073191680-435865314-2862784915-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4964 wrote to memory of 4872	4964	wscript.exe	91
PID 4964 wrote to memory of 4872	4964	wscript.exe	91
PID 4964 wrote to memory of 2224	4964	wscript.exe	92
PID 4964 wrote to memory of 2224	4964	wscript.exe	92
PID 2224 wrote to memory of 3288	2224	javaw.exe	97
PID 2224 wrote to memory of 3288	2224	javaw.exe	97

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\0f8ef908f483815d049a4c34433b89a0.js
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4964
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\mtdbwLCheS.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:4872
- 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\smlnqbzmvo.txt"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2224
- - 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:3288

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

mtdbwLCheS.js

Path C:\Users\Admin\AppData\Roaming\mtdbwLCheS.js
Size 10KB
SHA256 92740ff3dd79b56800fbefc0963f3cda86855445d2e2e7250d362bf9ca91ddca
MD5 3b69300c20db18e2d4ac0cf12d54dd6f
SHA1 326fa9803bede447183b84699e07ab6061796923
SHA512 8f331d7d3540a2e3b7a63a8f12e331b9a1ca210bd22b61d4318d5e4556d1f242dfe350e613b467d80fb69de2dd2354c06e9b9fdddb3d2fe48c4117312607c159
SSDEEP 192:boRQTOidL2QkL7sHJw96e+yobvRLcJbdnyii903l1GqTQ3:tLGcJe+yEZgY03l83
MD5 SHA1 SHA512 SSDEEP

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smlnqbzmvo.txt

Path C:\Users\Admin\AppData\Roaming\smlnqbzmvo.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/2224-9-0x0000010CE7820000-0x0000010CE8820000-memory.dmp

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memory/2224-18-0x0000010CE5F50000-0x0000010CE5F51000-memory.dmp

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memory/2224-29-0x0000010CE7820000-0x0000010CE8820000-memory.dmp

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memory/2224-34-0x0000010CE7820000-0x0000010CE8820000-memory.dmp

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memory/2224-37-0x0000010CE7820000-0x0000010CE8820000-memory.dmp

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memory/2224-44-0x0000010CE7820000-0x0000010CE8820000-memory.dmp

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memory/2224-45-0x0000010CE5F50000-0x0000010CE5F51000-memory.dmp

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memory/2224-49-0x0000010CE7820000-0x0000010CE8820000-memory.dmp

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memory/2224-58-0x0000010CE5F50000-0x0000010CE5F51000-memory.dmp

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memory/2224-59-0x0000010CE7820000-0x0000010CE8820000-memory.dmp

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memory/2224-82-0x0000010CE7820000-0x0000010CE8820000-memory.dmp

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads