Analysis
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max time kernel
141s -
max time network
133s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
13-08-2024 19:58
Static task
static1
Behavioral task
behavioral1
Sample
8f81e96f8c96dec003b51826bbd5885f.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
8f81e96f8c96dec003b51826bbd5885f.exe
Resource
win10v2004-20240802-en
General
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Target
8f81e96f8c96dec003b51826bbd5885f.exe
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Size
758KB
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MD5
8f81e96f8c96dec003b51826bbd5885f
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SHA1
7b8c4ec9a3808eaa32ab07d1608ad275f34adbe3
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SHA256
f7561de520f21434830d40d74904e93125b76407d477411622bbd829283ba8c4
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SHA512
8770f01b013e401a3eef992aa53e7623a0367bf857309fa238781f70f44ef3e1e5697751d2a28b7ff1f35e8fad921b3fbfeb17f3c9724fab786934c8eb8ee8ce
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SSDEEP
12288:VI/X+roiofZzZXvGasEKcXm/WThCFrUi/bwV5LYBYH7caEArXMViC53j:gOsiorGLEKT/WThUlbaUYH7lE005
Malware Config
Extracted
djvu
http://securebiz.org/fhsgtsspen6/get.php
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extension
.rigd
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offline_id
gigF2ELYocnMQz77LhEpSoXvtYp2junk9HZFtJt1
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payload_url
http://znpst.top/dl/build2.exe
http://securebiz.org/files/1/build3.exe
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ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-2zbBkO06mv Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0335gSd743d
Signatures
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Detected Djvu ransomware 9 IoCs
Processes:
resource yara_rule behavioral2/memory/5024-2-0x0000000000C60000-0x0000000000D7B000-memory.dmp family_djvu behavioral2/memory/3832-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3832-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3832-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3832-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3832-19-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2840-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2840-25-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2840-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
8f81e96f8c96dec003b51826bbd5885f.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation 8f81e96f8c96dec003b51826bbd5885f.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
8f81e96f8c96dec003b51826bbd5885f.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\ab173fe0-ed69-4e22-85ac-d5f2babfc50c\\8f81e96f8c96dec003b51826bbd5885f.exe\" --AutoStart" 8f81e96f8c96dec003b51826bbd5885f.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 12 api.2ip.ua 13 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
8f81e96f8c96dec003b51826bbd5885f.exe8f81e96f8c96dec003b51826bbd5885f.exedescription pid process target process PID 5024 set thread context of 3832 5024 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 4500 set thread context of 2840 4500 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 5028 2840 WerFault.exe 8f81e96f8c96dec003b51826bbd5885f.exe -
System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
8f81e96f8c96dec003b51826bbd5885f.exe8f81e96f8c96dec003b51826bbd5885f.exeicacls.exe8f81e96f8c96dec003b51826bbd5885f.exe8f81e96f8c96dec003b51826bbd5885f.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 8f81e96f8c96dec003b51826bbd5885f.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 8f81e96f8c96dec003b51826bbd5885f.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language icacls.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 8f81e96f8c96dec003b51826bbd5885f.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 8f81e96f8c96dec003b51826bbd5885f.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
8f81e96f8c96dec003b51826bbd5885f.exepid process 3832 8f81e96f8c96dec003b51826bbd5885f.exe 3832 8f81e96f8c96dec003b51826bbd5885f.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
8f81e96f8c96dec003b51826bbd5885f.exe8f81e96f8c96dec003b51826bbd5885f.exe8f81e96f8c96dec003b51826bbd5885f.exedescription pid process target process PID 5024 wrote to memory of 3832 5024 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 5024 wrote to memory of 3832 5024 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 5024 wrote to memory of 3832 5024 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 5024 wrote to memory of 3832 5024 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 5024 wrote to memory of 3832 5024 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 5024 wrote to memory of 3832 5024 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 5024 wrote to memory of 3832 5024 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 5024 wrote to memory of 3832 5024 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 5024 wrote to memory of 3832 5024 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 5024 wrote to memory of 3832 5024 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 3832 wrote to memory of 3080 3832 8f81e96f8c96dec003b51826bbd5885f.exe icacls.exe PID 3832 wrote to memory of 3080 3832 8f81e96f8c96dec003b51826bbd5885f.exe icacls.exe PID 3832 wrote to memory of 3080 3832 8f81e96f8c96dec003b51826bbd5885f.exe icacls.exe PID 3832 wrote to memory of 4500 3832 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 3832 wrote to memory of 4500 3832 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 3832 wrote to memory of 4500 3832 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 4500 wrote to memory of 2840 4500 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 4500 wrote to memory of 2840 4500 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 4500 wrote to memory of 2840 4500 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 4500 wrote to memory of 2840 4500 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 4500 wrote to memory of 2840 4500 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 4500 wrote to memory of 2840 4500 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 4500 wrote to memory of 2840 4500 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 4500 wrote to memory of 2840 4500 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 4500 wrote to memory of 2840 4500 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe PID 4500 wrote to memory of 2840 4500 8f81e96f8c96dec003b51826bbd5885f.exe 8f81e96f8c96dec003b51826bbd5885f.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8f81e96f8c96dec003b51826bbd5885f.exe"C:\Users\Admin\AppData\Local\Temp\8f81e96f8c96dec003b51826bbd5885f.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5024 -
C:\Users\Admin\AppData\Local\Temp\8f81e96f8c96dec003b51826bbd5885f.exe"C:\Users\Admin\AppData\Local\Temp\8f81e96f8c96dec003b51826bbd5885f.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3832 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\ab173fe0-ed69-4e22-85ac-d5f2babfc50c" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
- System Location Discovery: System Language Discovery
PID:3080 -
C:\Users\Admin\AppData\Local\Temp\8f81e96f8c96dec003b51826bbd5885f.exe"C:\Users\Admin\AppData\Local\Temp\8f81e96f8c96dec003b51826bbd5885f.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4500 -
C:\Users\Admin\AppData\Local\Temp\8f81e96f8c96dec003b51826bbd5885f.exe"C:\Users\Admin\AppData\Local\Temp\8f81e96f8c96dec003b51826bbd5885f.exe" --Admin IsNotAutoStart IsNotTask4⤵
- System Location Discovery: System Language Discovery
PID:2840 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2840 -s 5685⤵
- Program crash
PID:5028
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2840 -ip 28401⤵PID:4132
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4336,i,16316361669272684588,6171287487746154806,262144 --variations-seed-version --mojo-platform-channel-handle=3776 /prefetch:81⤵PID:3104
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\ab173fe0-ed69-4e22-85ac-d5f2babfc50c\8f81e96f8c96dec003b51826bbd5885f.exe
Filesize758KB
MD58f81e96f8c96dec003b51826bbd5885f
SHA17b8c4ec9a3808eaa32ab07d1608ad275f34adbe3
SHA256f7561de520f21434830d40d74904e93125b76407d477411622bbd829283ba8c4
SHA5128770f01b013e401a3eef992aa53e7623a0367bf857309fa238781f70f44ef3e1e5697751d2a28b7ff1f35e8fad921b3fbfeb17f3c9724fab786934c8eb8ee8ce