Analysis
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max time kernel
38s -
max time network
41s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
02-04-2023 15:22
Static task
static1
Behavioral task
behavioral1
Sample
37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe
Resource
win10v2004-20230220-en
General
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Target
37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe
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Size
751KB
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MD5
a7232495cefcbd35aece550e9cb57be2
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SHA1
8348c90f7d9faef12b2acea0741932d9dabdf83b
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SHA256
37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7
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SHA512
cada31ba1a8414d2c861aad47d9cd4e51bb1d73cfb91589c1c1378b7eec130a1bfdefb11a2c2059f6c9e6afe6bca759e297c853989e082cb70f385e822c92a7a
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SSDEEP
12288:PZv3GWL91nJXTgmNubakPfzN8jgWASRmVAeTGmAmQtHFWvqF2ti//cVfbAGKtGt:5GWR19TgmHoN8jghSoTTGmALtlkqAkC1
Malware Config
Extracted
djvu
http://zexeq.com/test2/get.php
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extension
.nifr
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offline_id
FCP2fiITr4rryFhFBnA59GMgwES5CunmcbPc76t1
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payload_url
http://uaery.top/dl/build2.exe
http://zexeq.com/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-v8HcfXTy5x 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: 0679SUjhw
Signatures
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Detected Djvu ransomware 12 IoCs
Processes:
resource yara_rule behavioral2/memory/2120-134-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2120-135-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/3592-136-0x0000000002720000-0x000000000283B000-memory.dmp family_djvu behavioral2/memory/2120-137-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2120-138-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2120-142-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1760-146-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1760-147-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1760-148-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1760-150-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1760-151-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1760-152-0x0000000000400000-0x0000000000537000-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:
37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0196e1f8-5d81-4439-a115-3dfe386c00f0\\37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe\" --AutoStart" 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.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 2 api.2ip.ua 7 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exedescription pid process target process PID 3592 set thread context of 2120 3592 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 1568 set thread context of 1760 1568 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exepid process 2120 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 2120 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 1760 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 1760 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exedescription pid process target process PID 3592 wrote to memory of 2120 3592 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 3592 wrote to memory of 2120 3592 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 3592 wrote to memory of 2120 3592 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 3592 wrote to memory of 2120 3592 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 3592 wrote to memory of 2120 3592 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 3592 wrote to memory of 2120 3592 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 3592 wrote to memory of 2120 3592 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 3592 wrote to memory of 2120 3592 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 3592 wrote to memory of 2120 3592 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 3592 wrote to memory of 2120 3592 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 2120 wrote to memory of 3744 2120 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe icacls.exe PID 2120 wrote to memory of 3744 2120 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe icacls.exe PID 2120 wrote to memory of 3744 2120 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe icacls.exe PID 2120 wrote to memory of 1568 2120 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 2120 wrote to memory of 1568 2120 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 2120 wrote to memory of 1568 2120 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 1568 wrote to memory of 1760 1568 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 1568 wrote to memory of 1760 1568 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 1568 wrote to memory of 1760 1568 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 1568 wrote to memory of 1760 1568 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 1568 wrote to memory of 1760 1568 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 1568 wrote to memory of 1760 1568 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 1568 wrote to memory of 1760 1568 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 1568 wrote to memory of 1760 1568 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 1568 wrote to memory of 1760 1568 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe PID 1568 wrote to memory of 1760 1568 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe 37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe"C:\Users\Admin\AppData\Local\Temp\37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3592 -
C:\Users\Admin\AppData\Local\Temp\37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe"C:\Users\Admin\AppData\Local\Temp\37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2120 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\0196e1f8-5d81-4439-a115-3dfe386c00f0" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3744
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C:\Users\Admin\AppData\Local\Temp\37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe"C:\Users\Admin\AppData\Local\Temp\37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1568 -
C:\Users\Admin\AppData\Local\Temp\37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe"C:\Users\Admin\AppData\Local\Temp\37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1760
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\0196e1f8-5d81-4439-a115-3dfe386c00f0\37ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7.exe
Filesize751KB
MD5a7232495cefcbd35aece550e9cb57be2
SHA18348c90f7d9faef12b2acea0741932d9dabdf83b
SHA25637ce5ea24b58c00c1b647e306daf527eb48366a058ab4549186c5d04ce9c38a7
SHA512cada31ba1a8414d2c861aad47d9cd4e51bb1d73cfb91589c1c1378b7eec130a1bfdefb11a2c2059f6c9e6afe6bca759e297c853989e082cb70f385e822c92a7a