vjw0rm | 28170716df5b62b92891e8e22847182fc2ac10b96222b74d0ad1230bd6b877b8

General

Target
e900e6cd547787c0ba378c4b46075d74_JaffaCakes118.exe
Size 355KB
Sample240409-cxsq9afc91
SHA256 28170716df5b62b92891e8e22847182fc2ac10b96222b74d0ad1230bd6b877b8
MD5 e900e6cd547787c0ba378c4b46075d74
SHA1 c50fdd3e4679dfaaab9a6b88883f71582f14d417
SHA512 356e05929e245de6a0e7670438f61771a3b12a786afd8f22cc67267aa8cadccb59569dbb4c09815dfaa1818e4974e605c9099b5c6f381a43f85495dbb7c2f8f2
SSDEEP 6144:JjT5Zh17eWxoG/+ov/2OIQ4wW3OBsCeAWnNFP3b4yRbLdzzibNjgA:JRZ+IoG/n9IQxW3OBseSN1RbL1ubNl
MD5 SHA1 SHA512 SSDEEP

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 6 IoCs

flow	pid	Process
18	396	WScript.exe
32	396	WScript.exe
41	396	WScript.exe
45	396	WScript.exe
52	396	WScript.exe
56	396	WScript.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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	e900e6cd547787c0ba378c4b46075d74_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	WScript.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\info.js	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
116	setup.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-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WEHHRB8F7I = "\"C:\\Users\\Admin\\AppData\\Roaming\\info.js\""	WScript.exe

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

System Information Discovery
T1082

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral2/files/0x001000000002313b-8.dat	nsis_installer_1
behavioral2/files/0x001000000002313b-8.dat	nsis_installer_2

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
3920	schtasks.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000_Classes\Local Settings	e900e6cd547787c0ba378c4b46075d74_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
116	setup.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1892 wrote to memory of 396	1892	e900e6cd547787c0ba378c4b46075d74_JaffaCakes118.exe	87
PID 1892 wrote to memory of 396	1892	e900e6cd547787c0ba378c4b46075d74_JaffaCakes118.exe	87
PID 1892 wrote to memory of 396	1892	e900e6cd547787c0ba378c4b46075d74_JaffaCakes118.exe	87
PID 1892 wrote to memory of 116	1892	e900e6cd547787c0ba378c4b46075d74_JaffaCakes118.exe	89
PID 1892 wrote to memory of 116	1892	e900e6cd547787c0ba378c4b46075d74_JaffaCakes118.exe	89
PID 1892 wrote to memory of 116	1892	e900e6cd547787c0ba378c4b46075d74_JaffaCakes118.exe	89
PID 396 wrote to memory of 3920	396	WScript.exe	92
PID 396 wrote to memory of 3920	396	WScript.exe	92
PID 396 wrote to memory of 3920	396	WScript.exe	92

C:\Users\Admin\AppData\Local\Temp\e900e6cd547787c0ba378c4b46075d74_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e900e6cd547787c0ba378c4b46075d74_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1892
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\info.js"
  2⤵
  - Blocklisted process makes network request
  - Checks computer location settings
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:396
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn anydesk /tr "C:\Users\Admin\AppData\Roaming\info.js
    3⤵
    - Creates scheduled task(s)
    PID:3920
- C:\Users\Admin\AppData\Local\Temp\setup.exe
  "C:\Users\Admin\AppData\Local\Temp\setup.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:116

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

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

info.js

Path C:\Users\Admin\AppData\Local\Temp\info.js
Size 55KB
SHA256 3f538dd314b6b25cb556f4e49dd2d835c3138768631054231e6cd9a3a23ba1e8
MD5 d5ad2ec0445ff7fd803f7f3ef8d5e00a
SHA1 c928fba62f4eb3ae1aad2c5c34782908ad57f715
SHA512 98fd1a026bf04d7e20f19ae0ad8985e99489be60c022836b6d9950723b88f9f8bd29c4477fadd7f67f4845ed1698b3bea1dc61e9d6c56ec5f70e17f8e4c8964c
SSDEEP 1536:L3qhtCL4vZWy2qY3emj7bH4/pQHKM9x5W:mhtOSZWy2qY3pj3Y/pQHB9fW
MD5 SHA1 SHA512 SSDEEP

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setup.exe

Path C:\Users\Admin\AppData\Local\Temp\setup.exe
Size 66KB
SHA256 07a9a0a4026aef36799649a86095f953fc8f7a32c1dab0a789c4bbb69ed46283
MD5 9b8a268527c79c2e37cd3630769303a8
SHA1 e16d1a407e8374f9882c7814f5dc630e0a15690f
SHA512 afa9e670e770d2fca423fd8fcd72c5754ec174a2d626ad478f53f3df3f99bbf58c975afec05ce9135f28e2261efdf26b429ce1ba27135aed5d45bc1e5c86c6d7
SSDEEP 1536:sQpQ5EP0ijnRTXJRDPiMYwkw9F4iBzZ0CGCzKbxkTPhL:sQIURTXJRDPiMYLw9F4UjGC0xkLV
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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