Malware Analysis Report

2025-06-16 01:03

Sample ID 211207-rezjeachc4
Target SHIPMENTDOCUMENTS PDF.js
SHA256 c399dbe473150a5d2a9d3676d81971de66f2daf5360d2be26e62b5533c4fcbad
Tags
strrat vjw0rm persistence stealer trojan worm
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

c399dbe473150a5d2a9d3676d81971de66f2daf5360d2be26e62b5533c4fcbad

Threat Level: Known bad

The file SHIPMENTDOCUMENTS PDF.js was found to be: Known bad.

Malicious Activity Summary

strrat vjw0rm persistence stealer trojan worm

STRRAT

Vjw0rm

Blocklisted process makes network request

Loads dropped DLL

Drops startup file

Adds Run key to start application

Drops file in Program Files directory

Enumerates physical storage devices

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-12-07 14:07

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-12-07 14:07

Reported

2021-12-07 14:09

Platform

win7-en-20211104

Max time kernel

32s

Max time network

141s

Command Line

wscript.exe "C:\Users\Admin\AppData\Local\Temp\SHIPMENTDOCUMENTS PDF.js"

Signatures

STRRAT

trojan stealer strrat

Vjw0rm

trojan worm vjw0rm

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\System32\WScript.exe N/A
N/A N/A C:\Windows\System32\WScript.exe N/A
N/A N/A C:\Windows\System32\WScript.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IwhBHZSsWd.js C:\Windows\System32\WScript.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IwhBHZSsWd.js C:\Windows\System32\WScript.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bkoqhlyydh.txt C:\Program Files\Java\jre7\bin\java.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Program Files\Java\jre7\bin\java.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\IwhBHZSsWd.js\"" C:\Windows\System32\WScript.exe N/A
Key created \REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\System32\WScript.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\system32\schtasks.exe N/A

Processes

C:\Windows\system32\wscript.exe

wscript.exe "C:\Users\Admin\AppData\Local\Temp\SHIPMENTDOCUMENTS PDF.js"

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\IwhBHZSsWd.js"

C:\Program Files\Java\jre7\bin\javaw.exe

"C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\bkoqhlyydh.txt"

C:\Program Files\Java\jre7\bin\java.exe

"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\bkoqhlyydh.txt"

C:\Program Files\Java\jre7\bin\java.exe

"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\bkoqhlyydh.txt"

C:\Windows\system32\cmd.exe

cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\bkoqhlyydh.txt"

C:\Windows\system32\schtasks.exe

schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\bkoqhlyydh.txt"

Network

Country Destination Domain Proto
US 8.8.8.8:53 repo1.maven.org udp
US 8.8.8.8:53 github.com udp
US 140.82.112.4:443 github.com tcp
US 199.232.192.209:443 repo1.maven.org tcp
US 199.232.192.209:443 repo1.maven.org tcp
US 199.232.192.209:443 repo1.maven.org tcp
US 8.8.8.8:53 javaslinns.duia.ro udp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
US 8.8.8.8:53 objects.githubusercontent.com udp
US 185.199.108.133:443 objects.githubusercontent.com tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp

Files

memory/1620-55-0x000007FEFC141000-0x000007FEFC143000-memory.dmp

memory/1632-56-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\IwhBHZSsWd.js

MD5 be3598b9ef31862aa34d1b79014c22de
SHA1 4d102790ec4bb3f6c95dc5097355c5f03c27beaf
SHA256 69ffc81cf2305ba7dedc79679eb1929dbdbf9e0a4cd6a53193c0367279750b4c
SHA512 778ad27bedbe8c275a5abdcba6f9a1ba43d8963ca67bbc768265fe6e5dcd380e1c7a191f7471364f5d6c22b1ba954819574f185141c631b2deca53a3ba6f7c01

memory/688-58-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\bkoqhlyydh.txt

MD5 4a769959e2ee2785d32ef2161f28cd8b
SHA1 e31b455b90081313e3b7405db3efe1582fe39daa
SHA256 496536d34981fc4155772fe136930ef13cf16116a4df18e6261dd084fce40b21
SHA512 8ef798581834a365f8a7649572c8683e9294cb950917b9c1e9b6ae60bf48b2e4d0e3be312843e398868f31835f276df24f4c5c2b6fb07b654322a8d5351815ca

memory/688-61-0x00000000022A0000-0x0000000002510000-memory.dmp

memory/688-62-0x00000000022A0000-0x0000000002510000-memory.dmp

memory/688-63-0x0000000000110000-0x0000000000111000-memory.dmp

memory/688-64-0x0000000000110000-0x0000000000111000-memory.dmp

memory/688-67-0x0000000000110000-0x0000000000111000-memory.dmp

memory/688-68-0x0000000000110000-0x0000000000111000-memory.dmp

memory/688-71-0x0000000000110000-0x0000000000111000-memory.dmp

memory/688-72-0x0000000000110000-0x0000000000111000-memory.dmp

memory/688-73-0x0000000000110000-0x0000000000111000-memory.dmp

memory/688-75-0x0000000000110000-0x0000000000111000-memory.dmp

memory/688-76-0x0000000000110000-0x0000000000111000-memory.dmp

memory/688-77-0x0000000000110000-0x0000000000111000-memory.dmp

memory/688-79-0x0000000000110000-0x0000000000111000-memory.dmp

memory/1376-78-0x0000000000000000-mapping.dmp

C:\Users\Admin\bkoqhlyydh.txt

MD5 4a769959e2ee2785d32ef2161f28cd8b
SHA1 e31b455b90081313e3b7405db3efe1582fe39daa
SHA256 496536d34981fc4155772fe136930ef13cf16116a4df18e6261dd084fce40b21
SHA512 8ef798581834a365f8a7649572c8683e9294cb950917b9c1e9b6ae60bf48b2e4d0e3be312843e398868f31835f276df24f4c5c2b6fb07b654322a8d5351815ca

memory/1376-84-0x0000000002060000-0x00000000022D0000-memory.dmp

memory/1376-83-0x0000000000220000-0x0000000000221000-memory.dmp

C:\Users\Admin\lib\system-hook-3.5.jar

MD5 e1aa38a1e78a76a6de73efae136cdb3a
SHA1 c463da71871f780b2e2e5dba115d43953b537daf
SHA256 2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609
SHA512 fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

C:\Users\Admin\lib\jna-platform-5.5.0.jar

MD5 2f4a99c2758e72ee2b59a73586a2322f
SHA1 af38e7c4d0fc73c23ecd785443705bfdee5b90bf
SHA256 24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5
SHA512 b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

C:\Users\Admin\lib\jna-5.5.0.jar

MD5 acfb5b5fd9ee10bf69497792fd469f85
SHA1 0e0845217c4907822403912ad6828d8e0b256208
SHA256 b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e
SHA512 e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-103686315-404690609-2047157615-1000\83aa4cc77f591dfc2374580bbd95f6ba_b9d440b4-6805-4743-9d27-9cb5fc4d9db0

MD5 c8366ae350e7019aefc9d1e6e6a498c6
SHA1 5731d8a3e6568a5f2dfbbc87e3db9637df280b61
SHA256 11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238
SHA512 33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

\Users\Admin\AppData\Local\Temp\jna-63116079\jna6630546940771227636.dll

MD5 e02979ecd43bcc9061eb2b494ab5af50
SHA1 3122ac0e751660f646c73b10c4f79685aa65c545
SHA256 a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a
SHA512 1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

C:\Users\Admin\lib\sqlite-jdbc-3.14.2.1.jar

MD5 b33387e15ab150a7bf560abdc73c3bec
SHA1 66b8075784131f578ef893fd7674273f709b9a4c
SHA256 2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491
SHA512 25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

memory/1456-92-0x0000000000000000-mapping.dmp

memory/1280-91-0x0000000000000000-mapping.dmp

memory/1376-93-0x0000000000220000-0x0000000000221000-memory.dmp

memory/1376-94-0x0000000000220000-0x0000000000221000-memory.dmp

memory/1972-97-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\bkoqhlyydh.txt

MD5 4a769959e2ee2785d32ef2161f28cd8b
SHA1 e31b455b90081313e3b7405db3efe1582fe39daa
SHA256 496536d34981fc4155772fe136930ef13cf16116a4df18e6261dd084fce40b21
SHA512 8ef798581834a365f8a7649572c8683e9294cb950917b9c1e9b6ae60bf48b2e4d0e3be312843e398868f31835f276df24f4c5c2b6fb07b654322a8d5351815ca

memory/1456-99-0x0000000002200000-0x0000000002470000-memory.dmp

memory/1456-100-0x0000000000230000-0x0000000000231000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2021-12-07 14:07

Reported

2021-12-07 14:09

Platform

win10-en-20211014

Max time kernel

147s

Max time network

152s

Command Line

wscript.exe "C:\Users\Admin\AppData\Local\Temp\SHIPMENTDOCUMENTS PDF.js"

Signatures

Vjw0rm

trojan worm vjw0rm

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IwhBHZSsWd.js C:\Windows\System32\WScript.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IwhBHZSsWd.js C:\Windows\System32\WScript.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\System32\WScript.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\IwhBHZSsWd.js\"" C:\Windows\System32\WScript.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\server\dll\jvm.pdb C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe N/A
File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\server\ntdll.pdb C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe N/A
File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\server\symbols\dll\ntdll.pdb C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe N/A
File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\ntdll.pdb C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe N/A
File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\symbols\dll\jvm.pdb C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe N/A
File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\server\dll\ntdll.pdb C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe N/A
File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\dll\ntdll.pdb C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe N/A
File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\symbols\dll\ntdll.pdb C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe N/A
File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\server\jvm.pdb C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe N/A
File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\server\symbols\dll\jvm.pdb C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe N/A
File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\jvm.pdb C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe N/A
File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\dll\jvm.pdb C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe N/A

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000_Classes\Local Settings C:\Windows\system32\wscript.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2644 wrote to memory of 3504 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\WScript.exe
PID 2644 wrote to memory of 3504 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\WScript.exe
PID 2644 wrote to memory of 3664 N/A C:\Windows\system32\wscript.exe C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe
PID 2644 wrote to memory of 3664 N/A C:\Windows\system32\wscript.exe C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe

Processes

C:\Windows\system32\wscript.exe

wscript.exe "C:\Users\Admin\AppData\Local\Temp\SHIPMENTDOCUMENTS PDF.js"

C:\Windows\System32\WScript.exe

"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\IwhBHZSsWd.js"

C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe

"C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\ftyuljcq.txt"

Network

Country Destination Domain Proto
US 8.8.8.8:53 javaslinns.duia.ro udp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
US 8.8.8.8:53 github.com udp
US 8.8.8.8:53 repo1.maven.org udp
US 199.232.192.209:443 repo1.maven.org tcp
US 199.232.192.209:443 repo1.maven.org tcp
US 199.232.192.209:443 repo1.maven.org tcp
US 140.82.113.4:443 github.com tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
US 8.8.8.8:53 time.windows.com udp
NL 20.101.57.9:123 time.windows.com udp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp
NO 194.5.98.16:1333 javaslinns.duia.ro tcp

Files

memory/3504-115-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\IwhBHZSsWd.js

MD5 be3598b9ef31862aa34d1b79014c22de
SHA1 4d102790ec4bb3f6c95dc5097355c5f03c27beaf
SHA256 69ffc81cf2305ba7dedc79679eb1929dbdbf9e0a4cd6a53193c0367279750b4c
SHA512 778ad27bedbe8c275a5abdcba6f9a1ba43d8963ca67bbc768265fe6e5dcd380e1c7a191f7471364f5d6c22b1ba954819574f185141c631b2deca53a3ba6f7c01

memory/3664-117-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\ftyuljcq.txt

MD5 4a769959e2ee2785d32ef2161f28cd8b
SHA1 e31b455b90081313e3b7405db3efe1582fe39daa
SHA256 496536d34981fc4155772fe136930ef13cf16116a4df18e6261dd084fce40b21
SHA512 8ef798581834a365f8a7649572c8683e9294cb950917b9c1e9b6ae60bf48b2e4d0e3be312843e398868f31835f276df24f4c5c2b6fb07b654322a8d5351815ca

memory/3664-119-0x0000000002DB0000-0x0000000003020000-memory.dmp

memory/3664-120-0x0000000002DB0000-0x0000000003020000-memory.dmp

memory/3664-121-0x0000000000D00000-0x0000000000D01000-memory.dmp

memory/3664-124-0x0000000003020000-0x0000000003030000-memory.dmp

memory/3664-125-0x0000000003030000-0x0000000003040000-memory.dmp

memory/3664-126-0x0000000000D00000-0x0000000000D01000-memory.dmp

memory/3664-128-0x0000000003040000-0x0000000003050000-memory.dmp

memory/3664-129-0x0000000003050000-0x0000000003060000-memory.dmp

memory/3664-131-0x00000000030C0000-0x00000000030D0000-memory.dmp

memory/3664-130-0x0000000003060000-0x0000000003070000-memory.dmp

memory/3664-133-0x00000000030D0000-0x00000000030E0000-memory.dmp

memory/3664-134-0x00000000030E0000-0x00000000030F0000-memory.dmp

memory/3664-135-0x0000000003070000-0x0000000003080000-memory.dmp

memory/3664-136-0x0000000003080000-0x0000000003090000-memory.dmp

memory/3664-137-0x0000000003090000-0x00000000030A0000-memory.dmp

memory/3664-138-0x00000000030A0000-0x00000000030B0000-memory.dmp

memory/3664-139-0x00000000030B0000-0x00000000030C0000-memory.dmp

memory/3664-140-0x00000000030F0000-0x0000000003100000-memory.dmp