Analysis
- max time kernel
150s - max time network
126s - platform
windows7_x64 - resource
win7-20240221-en - resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system - submitted
03/03/2024, 10:51
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
virussign.com_b1cf4b5d640ed91ba7023b630e5dbf9b.exe
Resource
win7-20240221-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
virussign.com_b1cf4b5d640ed91ba7023b630e5dbf9b.exe
Resource
win10v2004-20240226-en
windows10-2004-x64
8 signatures
150 seconds
General
- Target virussign.com_b1cf4b5d640ed91ba7023b630e5dbf9b.exe
- Size 88KB
- Sample240303-mx45dshd71
- SHA256 00b38543491d3e2b03f6ea6579ccc1c5480e57c9a6b1f3209ea4af5e62ab8115
- MD5 b1cf4b5d640ed91ba7023b630e5dbf9b
- SHA1 ec80034d69283f644015f1f252328903edb18920
- SHA512 794e868a893a8aeb999c50ea4ac6619351951c41688a05acbc13c0470faaad7166cd521ce70338ebc0505a21138f4478627ef1dc1253eeedf7e26ba8a2982054
- SSDEEP 768:vAn68qOJ+TtKDwHpFeh6gM1rA8dOsc7jUq4RkA5o3K1DfsvtzsXjLft+9o1mm:vAnHqlZKULFjnAzA5o6BfItoXjLl0hm
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" virussign.com_b1cf4b5d640ed91ba7023b630e5dbf9b.exe Set value (int) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" joasef.exe - Executes dropped EXE 1 IoCs
pid Process 2120 joasef.exe - Loads dropped DLL 2 IoCs
pid Process 1280 virussign.com_b1cf4b5d640ed91ba7023b630e5dbf9b.exe 1280 virussign.com_b1cf4b5d640ed91ba7023b630e5dbf9b.exe - Adds Run key to start application 2 TTPs 27 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /d" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /l" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /a" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /b" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /j" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /e" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /o" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /k" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /y" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /q" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /w" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /x" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /h" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /c" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /z" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /m" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /u" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /i" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /g" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /p" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /t" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /s" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /f" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /v" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /r" virussign.com_b1cf4b5d640ed91ba7023b630e5dbf9b.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /n" joasef.exe Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\joasef = "C:\\Users\\Admin\\joasef.exe /r" joasef.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1280 virussign.com_b1cf4b5d640ed91ba7023b630e5dbf9b.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe 2120 joasef.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1280 virussign.com_b1cf4b5d640ed91ba7023b630e5dbf9b.exe 2120 joasef.exe - Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1280 wrote to memory of 2120 1280 virussign.com_b1cf4b5d640ed91ba7023b630e5dbf9b.exe 28 PID 1280 wrote to memory of 2120 1280 virussign.com_b1cf4b5d640ed91ba7023b630e5dbf9b.exe 28 PID 1280 wrote to memory of 2120 1280 virussign.com_b1cf4b5d640ed91ba7023b630e5dbf9b.exe 28 PID 1280 wrote to memory of 2120 1280 virussign.com_b1cf4b5d640ed91ba7023b630e5dbf9b.exe 28
Processes
-
C:\Users\Admin\AppData\Local\Temp\virussign.com_b1cf4b5d640ed91ba7023b630e5dbf9b.exe"C:\Users\Admin\AppData\Local\Temp\virussign.com_b1cf4b5d640ed91ba7023b630e5dbf9b.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1280 -
C:\Users\Admin\joasef.exe"C:\Users\Admin\joasef.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:2120
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
- Path \Users\Admin\joasef.exe
- Size 88KB
- SHA256 f009903e5df8ca7ab2f99c3744daceb06bc41112fc0620819537fdc185575fa7
- MD5 f2cd29fce6d9c8d7ec16fc2593d0f8f4
- SHA1 cf586e894875b18872ac4fbff72c61d243782f1a
- SHA512 01d608904bc470450d3e9f4cd5d5271869ede8c1bc56e09a4791159f93dfc22a49cdabf8045fdd2aa0d748873fad626458e274bfde07ff1a25318cebe84ab542
- SSDEEP 768:vAu68qOJ+Tt5U7wHpFeh6gM1rA8dOsc7jUq4RkA5o3K1DfsvtzsXjLft+9o1mm:vAuHqlZ5fLFjnAzA5o6BfItoXjLl0hm
- MD5 SHA1 SHA512 SSDEEP