vjw0rm | 604dc0ff16d6c026a4c322dc61ca9597a02dbc5c80bcea0c46961005204decaf

General

Target

63507ef5bc127d200bd48e477a5f8ab2.jar
Size

627KB
MD5

63507ef5bc127d200bd48e477a5f8ab2
SHA1

4b05541814e7c1bdbb70f1cb82b3db5f8e9b5823
SHA256

604dc0ff16d6c026a4c322dc61ca9597a02dbc5c80bcea0c46961005204decaf
SHA512

645ebbff6ac01dd2d73be6db41dc9f6456a82c96b9a65f82d40151dbebd6c27623cd2fd3a6fde90651c51278e7db525b540510fb6e8f46acaa4b0f03c8a18a13
SSDEEP

12288:TsWeQT7dKrfL/0MqLofLrYeBurxCvORSxT8FhHD3mMkLdSIdNQ:XTBK0MqEfL1KRk+D1kZp4

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-1-5-21-2398549320-3657759451-817663969-1000\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\vTTsXwVcli.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vTTsXwVcli.js	WScript.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
528	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-1-5-21-2398549320-3657759451-817663969-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\vTTsXwVcli.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-1-5-21-2398549320-3657759451-817663969-1000_Classes\Local Settings	wscript.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 528	2040	java.exe	88
PID 2040 wrote to memory of 528	2040	java.exe	88
PID 2040 wrote to memory of 4236	2040	java.exe	90
PID 2040 wrote to memory of 4236	2040	java.exe	90
PID 4236 wrote to memory of 1420	4236	wscript.exe	92
PID 4236 wrote to memory of 1420	4236	wscript.exe	92
PID 4236 wrote to memory of 4984	4236	wscript.exe	93
PID 4236 wrote to memory of 4984	4236	wscript.exe	93
PID 4984 wrote to memory of 1808	4984	javaw.exe	95
PID 4984 wrote to memory of 1808	4984	javaw.exe	95

C:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\63507ef5bc127d200bd48e477a5f8ab2.jar
1⤵
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Windows\system32\icacls.exe
  C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
  2⤵
  - Modifies file permissions
  PID:528
- C:\Windows\SYSTEM32\wscript.exe
  wscript C:\Users\Admin\_output.js
  2⤵
  - Checks computer location settings
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4236
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\vTTsXwVcli.js"
    3⤵
    - Drops startup file
    - Adds Run key to start application
    PID:1420
- - 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\lblui.txt"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4984
  - - C:\Program Files\Java\jre-1.8\bin\java.exe
      "C:\Program Files\Java\jre-1.8\bin\java.exe" -jar C:\Users\Admin\AppData\Local\Temp\_0.190282493822072856421509871336173189.class
      4⤵
      PID:1808

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp

Filesize
46B

MD5
32ee6f06ec0146712576f11f086f50c2

SHA1
da7bcf816565c1240b443a0981322e8131f27437

SHA256
7f05be87fe557daec21d176af8546a00727a35cec0bd2f6c7fa19ec8235317e5

SHA512
6431a4abdc6922b6cdfa3f1aa2eed179f17cf68b47265ce2e83dea2baa7d24db396ca75faf3bc3392dc6992669869b2a97b157c09eb327c86665afc5d06a159f

Download Submit
C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp

Filesize
46B

MD5
93519d370146701c4aafd6e26eaf2cd4

SHA1
14fdd82b87f6fa5c487969288694fa5429757634

SHA256
6b399bcd024ccfd205e12630de8f8ec0417795936682ae4df812a8a4a4cc52d0

SHA512
6121f5a2b40672c587cdeade2efae1c2be5033e454c1f86cc0b556d7974565979c7a15f775da52e701065ab5bcce31f050156759922818a2ce88ca7051c2cb01

Download Submit
C:\Users\Admin\AppData\Local\Temp\_0.190282493822072856421509871336173189.class

Filesize
241KB

MD5
781fb531354d6f291f1ccab48da6d39f

SHA1
9ce4518ebcb5be6d1f0b5477fa00c26860fe9a68

SHA256
97d585b6aff62fb4e43e7e6a5f816dcd7a14be11a88b109a9ba9e8cd4c456eb9

SHA512
3e6630f5feb4a3eb1dac7e9125ce14b1a2a45d7415cf44cea42bc51b2a9aa37169ee4a4c36c888c8f2696e7d6e298e2ad7b2f4c22868aaa5948210eb7db220d8

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2398549320-3657759451-817663969-1000\83aa4cc77f591dfc2374580bbd95f6ba_4fbfcbca-5772-4263-80de-2998e1106860

Filesize
45B

MD5
c8366ae350e7019aefc9d1e6e6a498c6

SHA1
5731d8a3e6568a5f2dfbbc87e3db9637df280b61

SHA256
11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

SHA512
33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

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

Filesize
479KB

MD5
c67d02c567461d6fad607a89ac1084b8

SHA1
1c8af842bda12c315b7a78b4a44f3c4e8a1721a9

SHA256
13510f3ee14e47e2fc457215420e795f0959e33411e4fa2e8a889a3c7fb858d9

SHA512
9151cfaff17d3cd2d832ad5a4e9fbcf93e49c955a1ed0748d67d9df307d7714bff346caa4239482ca676697ee48c689759f3ef86fd360e47e8910246dce0a043

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

Filesize
9KB

MD5
e068ea577e83f36e6f5a3a64bd763648

SHA1
83764893b98e89350c261609b76b0fd812b44630

SHA256
d75a2e8e930b82f2cf2e751b298294f5594d74ff68aa65ca27ff6c1eb46730b6

SHA512
ed0d2fa859b239f84d736dc138a9a7c100cececdf565ed6a2d401ef9f20b526feffee4587eaf93697d9bb7db33f8bc8eb91a66d70b08645b913d1f6edcea47c6

Download Submit
C:\Users\Admin\_output.js

Filesize
910KB

MD5
a9b85388aae2c05a662703488dc484b0

SHA1
461f673f7af1f372e42fd4e8e6edbd60ddbb5dc7

SHA256
39a2e082897abaaf11cc9e955d4b1dff633be28a0be463b748c3bd6dc6dfd6ec

SHA512
abd01d08176c3fd6e45407f9222d5b02d60d719ea82366c4431282a1779e28cedeb4923f0c897e8d9df3b3ee3f05d10c509c0e3861119f8a712b9cca809384a7

Download Submit
memory/1808-44-0x00000151CF120000-0x00000151D0120000-memory.dmp

Filesize
16.0MB

Download
memory/1808-81-0x00000151CF3A0000-0x00000151CF3B0000-memory.dmp

Filesize
64KB

Download
memory/1808-80-0x00000151CF390000-0x00000151CF3A0000-memory.dmp

Filesize
64KB

Download
memory/1808-52-0x00000151CF100000-0x00000151CF101000-memory.dmp

Filesize
4KB

Download
memory/1808-82-0x00000151CF3B0000-0x00000151CF3C0000-memory.dmp

Filesize
64KB

Download
memory/1808-62-0x00000151CF100000-0x00000151CF101000-memory.dmp

Filesize
4KB

Download
memory/2040-4-0x0000025F81410000-0x0000025F82410000-memory.dmp

Filesize
16.0MB

Download
memory/2040-14-0x0000025FFF6C0000-0x0000025FFF6C1000-memory.dmp

Filesize
4KB

Download
memory/4984-32-0x000002400EB80000-0x000002400FB80000-memory.dmp

Filesize
16.0MB

Download
memory/4984-78-0x000002400D2F0000-0x000002400D2F1000-memory.dmp

Filesize
4KB

Download
memory/4984-59-0x000002400EB80000-0x000002400FB80000-memory.dmp

Filesize
16.0MB

Download
memory/4984-43-0x000002400D2F0000-0x000002400D2F1000-memory.dmp

Filesize
4KB

Download
memory/4984-86-0x000002400EB80000-0x000002400FB80000-memory.dmp

Filesize
16.0MB

Download
memory/4984-88-0x000002400D2F0000-0x000002400D2F1000-memory.dmp

Filesize
4KB

Download
memory/4984-92-0x000002400EB80000-0x000002400FB80000-memory.dmp

Filesize
16.0MB

Download
memory/4984-99-0x000002400D2F0000-0x000002400D2F1000-memory.dmp

Filesize
4KB

Download
memory/4984-102-0x000002400EB80000-0x000002400FB80000-memory.dmp

Filesize
16.0MB

Download
memory/4984-111-0x000002400EB80000-0x000002400FB80000-memory.dmp

Filesize
16.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads