Analysis
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max time kernel
147s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
30/05/2023, 12:04
Static task
static1
Behavioral task
behavioral1
Sample
03543999.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
03543999.exe
Resource
win10v2004-20230220-en
General
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Target
03543999.exe
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Size
773KB
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MD5
0a23310ed03ca85389e5738e00490bd5
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SHA1
159677590ed0a137529be4d3df42fe961d640808
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SHA256
7dc3815a0db7fc813d9927f7a938cdb506d9c828505714d4a2dd2ab4686a50f9
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SHA512
d0b58f7bd4c4540d14e84f7751e03810ea884bee5a184ac47eeac896a2a8f0b0d273bfcf1d7fa65637f083e347b6f5b467aec3f994e2668c4504b5216e666d81
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SSDEEP
12288:xek1V/Go1Ur2v6qwiqZuvAf6tzSs9gUwk7DZ3fTGqYqh0OCfTxPIxou4DueX:xP/uFr2lwFmy65SclwGvTGqYSSrcquG
Malware Config
Extracted
djvu
http://zexeq.com/raud/get.php
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extension
.weon
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offline_id
D4KWjM5DY4jRN5T36xETsvDrARq2cCeStxvviHt1
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payload_url
http://colisumy.com/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-3q8YguI9qh 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: 0721JOsie
Extracted
vidar
4.1
77a63e71a10ee1d81a28b5c866b75922
https://steamcommunity.com/profiles/76561199510444991
https://t.me/task4manager
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profile_id_v2
77a63e71a10ee1d81a28b5c866b75922
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user_agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36 Edg/112.0.1722.34
Signatures
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Detected Djvu ransomware 15 IoCs
resource yara_rule behavioral2/memory/4804-134-0x0000000002650000-0x000000000276B000-memory.dmp family_djvu behavioral2/memory/5080-135-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5080-136-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5080-137-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5080-138-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/5080-148-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/348-151-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/348-152-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/348-158-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/348-159-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/348-163-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/348-165-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/348-166-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/348-188-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/348-281-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Downloads MZ/PE file
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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation 03543999.exe Key value queried \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation 03543999.exe -
Executes dropped EXE 4 IoCs
pid Process 916 build2.exe 4404 build3.exe 3336 build2.exe 5068 mstsca.exe -
Loads dropped DLL 2 IoCs
pid Process 3336 build2.exe 3336 build2.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3824 icacls.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\73d22416-bcb6-48b8-9800-9d94633bc63b\\03543999.exe\" --AutoStart" 03543999.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 7 api.2ip.ua 8 api.2ip.ua 23 api.2ip.ua -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 4804 set thread context of 5080 4804 03543999.exe 83 PID 3012 set thread context of 348 3012 03543999.exe 87 PID 916 set thread context of 3336 916 build2.exe 95 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 build2.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString build2.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4884 schtasks.exe 548 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 5080 03543999.exe 5080 03543999.exe 348 03543999.exe 348 03543999.exe 3336 build2.exe 3336 build2.exe -
Suspicious use of WriteProcessMemory 47 IoCs
description pid Process procid_target PID 4804 wrote to memory of 5080 4804 03543999.exe 83 PID 4804 wrote to memory of 5080 4804 03543999.exe 83 PID 4804 wrote to memory of 5080 4804 03543999.exe 83 PID 4804 wrote to memory of 5080 4804 03543999.exe 83 PID 4804 wrote to memory of 5080 4804 03543999.exe 83 PID 4804 wrote to memory of 5080 4804 03543999.exe 83 PID 4804 wrote to memory of 5080 4804 03543999.exe 83 PID 4804 wrote to memory of 5080 4804 03543999.exe 83 PID 4804 wrote to memory of 5080 4804 03543999.exe 83 PID 4804 wrote to memory of 5080 4804 03543999.exe 83 PID 5080 wrote to memory of 3824 5080 03543999.exe 84 PID 5080 wrote to memory of 3824 5080 03543999.exe 84 PID 5080 wrote to memory of 3824 5080 03543999.exe 84 PID 5080 wrote to memory of 3012 5080 03543999.exe 85 PID 5080 wrote to memory of 3012 5080 03543999.exe 85 PID 5080 wrote to memory of 3012 5080 03543999.exe 85 PID 3012 wrote to memory of 348 3012 03543999.exe 87 PID 3012 wrote to memory of 348 3012 03543999.exe 87 PID 3012 wrote to memory of 348 3012 03543999.exe 87 PID 3012 wrote to memory of 348 3012 03543999.exe 87 PID 3012 wrote to memory of 348 3012 03543999.exe 87 PID 3012 wrote to memory of 348 3012 03543999.exe 87 PID 3012 wrote to memory of 348 3012 03543999.exe 87 PID 3012 wrote to memory of 348 3012 03543999.exe 87 PID 3012 wrote to memory of 348 3012 03543999.exe 87 PID 3012 wrote to memory of 348 3012 03543999.exe 87 PID 348 wrote to memory of 916 348 03543999.exe 91 PID 348 wrote to memory of 916 348 03543999.exe 91 PID 348 wrote to memory of 916 348 03543999.exe 91 PID 348 wrote to memory of 4404 348 03543999.exe 92 PID 348 wrote to memory of 4404 348 03543999.exe 92 PID 348 wrote to memory of 4404 348 03543999.exe 92 PID 4404 wrote to memory of 548 4404 build3.exe 93 PID 4404 wrote to memory of 548 4404 build3.exe 93 PID 4404 wrote to memory of 548 4404 build3.exe 93 PID 916 wrote to memory of 3336 916 build2.exe 95 PID 916 wrote to memory of 3336 916 build2.exe 95 PID 916 wrote to memory of 3336 916 build2.exe 95 PID 916 wrote to memory of 3336 916 build2.exe 95 PID 916 wrote to memory of 3336 916 build2.exe 95 PID 916 wrote to memory of 3336 916 build2.exe 95 PID 916 wrote to memory of 3336 916 build2.exe 95 PID 916 wrote to memory of 3336 916 build2.exe 95 PID 916 wrote to memory of 3336 916 build2.exe 95 PID 5068 wrote to memory of 4884 5068 mstsca.exe 101 PID 5068 wrote to memory of 4884 5068 mstsca.exe 101 PID 5068 wrote to memory of 4884 5068 mstsca.exe 101
Processes
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C:\Users\Admin\AppData\Local\Temp\03543999.exe"C:\Users\Admin\AppData\Local\Temp\03543999.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4804 -
C:\Users\Admin\AppData\Local\Temp\03543999.exe"C:\Users\Admin\AppData\Local\Temp\03543999.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5080 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\73d22416-bcb6-48b8-9800-9d94633bc63b" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3824
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C:\Users\Admin\AppData\Local\Temp\03543999.exe"C:\Users\Admin\AppData\Local\Temp\03543999.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3012 -
C:\Users\Admin\AppData\Local\Temp\03543999.exe"C:\Users\Admin\AppData\Local\Temp\03543999.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:348 -
C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build2.exe"C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:916 -
C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build2.exe"C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build2.exe"6⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:3336
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C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build3.exe"C:\Users\Admin\AppData\Local\a9bf9f95-580c-4dea-afa7-5e2e84334a63\build3.exe"5⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4404 -
C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"6⤵
- Creates scheduled task(s)
PID:548
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C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exeC:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:5068 -
C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"2⤵
- Creates scheduled task(s)
PID:4884
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
593KB
MD5c8fd9be83bc728cc04beffafc2907fe9
SHA195ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA256ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
SHA512fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
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Filesize
2.0MB
MD51cc453cdf74f31e4d913ff9c10acdde2
SHA16e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA256ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
SHA512dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize2KB
MD5f66e484f76180fb19546aa9d57accba2
SHA10ced1b9c30ea054dd83b49f1edfef55f5b5183c0
SHA256f9cdbac7b0628e7d44d159e621c03709ed0d0e1ee5555215f1b6a15c1571d940
SHA512fa38f3d270492548fda297e496bfd79c4bf0a67f73dc712def24a495999c7923add1ad55fbb34925d9535e679d78491f35ffc794ea7fd1d88ff8529b739dbe33
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize1KB
MD50de5553e9827815659002db71daadba3
SHA1073c647323b236fec254bc8761ebc838bb636486
SHA256e7ee0d4fb41f5f483e55f53e97817ccb66bc54031b658094ef4b1b1ef9bd00ad
SHA5126de850f9a1f2dbdb77da273b651617639d3e33ad1653bc3464ef695b1bae4e6c16e0fc3891016c40b854981ba0b3005c3cf32406d410900b39fb4c565a8109da
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
Filesize488B
MD55e283c86d9c7b7164c258cea220214ef
SHA18679776c131eefcace534c294d98b3d346feb448
SHA256a186003ded057015f83f89b97d5c2f377b36176e3ad2caa523bd08238825daea
SHA5126fe9499302e077652d09d187b72b6bf69403093595f9fb6dccca3740134430162d5ec0e51132e71491706fbaf99e580d8b2e6f60452fca3ff45e3f430c45f823
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
Filesize482B
MD59030969ca7651567d4213df41dff2089
SHA15b0e7cd1914817cec5a996665879fb8813d15f7b
SHA256da18d533ef7253279f22f8f3b89cb94ef8cc9467cc4406761c4bf66c9cb48ae6
SHA5122485563dee1970ecc58fadfef14a27e5f16a13757f66ff0416ea4075ab198f4494faf44f7dd6a5ea88ad38b4976d8f9045abc468889a883f00678ff62af029ee
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Filesize
773KB
MD50a23310ed03ca85389e5738e00490bd5
SHA1159677590ed0a137529be4d3df42fe961d640808
SHA2567dc3815a0db7fc813d9927f7a938cdb506d9c828505714d4a2dd2ab4686a50f9
SHA512d0b58f7bd4c4540d14e84f7751e03810ea884bee5a184ac47eeac896a2a8f0b0d273bfcf1d7fa65637f083e347b6f5b467aec3f994e2668c4504b5216e666d81
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Filesize
437KB
MD504197441a29753c237bc0c285082c0d8
SHA1463462810a45452d6e91364ae7858263437648dd
SHA256692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77
SHA51291456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05
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Filesize
437KB
MD504197441a29753c237bc0c285082c0d8
SHA1463462810a45452d6e91364ae7858263437648dd
SHA256692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77
SHA51291456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05
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Filesize
437KB
MD504197441a29753c237bc0c285082c0d8
SHA1463462810a45452d6e91364ae7858263437648dd
SHA256692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77
SHA51291456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05
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Filesize
437KB
MD504197441a29753c237bc0c285082c0d8
SHA1463462810a45452d6e91364ae7858263437648dd
SHA256692fe3aca06ef0e1582fcf692dfd0e2e38e1b542368848318e0095a8f85f3d77
SHA51291456197c3d88bcf52ce557690751fe9d7b5b90c92313e00a11c7af75bdddf92623b26f7fa70c72df6083221010556052d366dcc45d091e46d8dfda585297a05
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a
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Filesize
9KB
MD59ead10c08e72ae41921191f8db39bc16
SHA1abe3bce01cd34afc88e2c838173f8c2bd0090ae1
SHA2568d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0
SHA512aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a