Analysis
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max time kernel
147s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
15/04/2024, 16:14
Static task
static1
Behavioral task
behavioral1
Sample
e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe
Resource
win11-20240412-en
General
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Target
e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe
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Size
804KB
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MD5
c5c1ca56d106806d9b23a85fd3dd08dc
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SHA1
c665b88616eb5c4283c25188ff078145b218f07d
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SHA256
e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148
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SHA512
a0517342af6f496eba51b823e0d96ab33a1d6079fa2f6c01bc754f29ca28ed5324b88c8e82175a3b97e8e6d5ff029f20640a419aa7ba49089e57af813a8113e9
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SSDEEP
12288:Kirakz6ZgXYHgPMbfwNHRsMqGZ8KimyNbfh0GMUBCL4eFu87oDIEDE8SnCcD:KiQdfw4Mq08Kmbh77I/T
Malware Config
Extracted
djvu
http://sajdfue.com/test2/get.php
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extension
.uazq
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offline_id
Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://sajdfue.com/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 17 IoCs
resource yara_rule behavioral1/memory/4576-2-0x0000000004A40000-0x0000000004B5B000-memory.dmp family_djvu behavioral1/memory/4704-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4704-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4704-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4704-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4704-15-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3472-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3472-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3472-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3472-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3472-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3472-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3472-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3472-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3472-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3472-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3472-37-0x0000000000400000-0x0000000000537000-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.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3198953144-1466794930-246379610-1000\Control Panel\International\Geo\Nation e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 440 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3198953144-1466794930-246379610-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\3c72a42b-b2d7-4eed-9fc5-632b5574b6d3\\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe\" --AutoStart" e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe -
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 17 api.2ip.ua 18 api.2ip.ua 29 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4576 set thread context of 4704 4576 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 89 PID 4092 set thread context of 3472 4092 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 95 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4704 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 4704 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 3472 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 3472 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 4576 wrote to memory of 4704 4576 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 89 PID 4576 wrote to memory of 4704 4576 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 89 PID 4576 wrote to memory of 4704 4576 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 89 PID 4576 wrote to memory of 4704 4576 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 89 PID 4576 wrote to memory of 4704 4576 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 89 PID 4576 wrote to memory of 4704 4576 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 89 PID 4576 wrote to memory of 4704 4576 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 89 PID 4576 wrote to memory of 4704 4576 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 89 PID 4576 wrote to memory of 4704 4576 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 89 PID 4576 wrote to memory of 4704 4576 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 89 PID 4704 wrote to memory of 440 4704 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 91 PID 4704 wrote to memory of 440 4704 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 91 PID 4704 wrote to memory of 440 4704 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 91 PID 4704 wrote to memory of 4092 4704 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 92 PID 4704 wrote to memory of 4092 4704 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 92 PID 4704 wrote to memory of 4092 4704 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 92 PID 4092 wrote to memory of 3472 4092 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 95 PID 4092 wrote to memory of 3472 4092 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 95 PID 4092 wrote to memory of 3472 4092 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 95 PID 4092 wrote to memory of 3472 4092 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 95 PID 4092 wrote to memory of 3472 4092 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 95 PID 4092 wrote to memory of 3472 4092 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 95 PID 4092 wrote to memory of 3472 4092 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 95 PID 4092 wrote to memory of 3472 4092 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 95 PID 4092 wrote to memory of 3472 4092 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 95 PID 4092 wrote to memory of 3472 4092 e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe 95
Processes
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C:\Users\Admin\AppData\Local\Temp\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe"C:\Users\Admin\AppData\Local\Temp\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4576 -
C:\Users\Admin\AppData\Local\Temp\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe"C:\Users\Admin\AppData\Local\Temp\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4704 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\3c72a42b-b2d7-4eed-9fc5-632b5574b6d3" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:440
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C:\Users\Admin\AppData\Local\Temp\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe"C:\Users\Admin\AppData\Local\Temp\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4092 -
C:\Users\Admin\AppData\Local\Temp\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe"C:\Users\Admin\AppData\Local\Temp\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3472
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD5f741810cb830974aebab5f43eb80bc43
SHA11019ffd11ba07f662659b7f244d2743b4b1562c3
SHA25620c4d592f763227cd6ed7fc812ae9d65edd6e046c30a70e7c694c579d9f1580a
SHA512607ca542510b2a90fbade08569e449fdf35673dc4f045c4ca61982666fe2dd694d265835ebe2d90146dfcecedc7f229804c8e235d8eb9ca36f761064522539f4
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize410B
MD57d239292529ac220a22978a9bb964d73
SHA19baab3021acea6aa3e100986d0970960a0329292
SHA256b6e99c7eb6f2b36cb6cd8b777484ec45d27f90759c3376ec8ba87c743d7a99ad
SHA512e98beaa915dd0aa094377aeb47f64090a82a76d869573fc972e5c2a324a12475af9d83f72d62e89ecfedc4c90e885a900afe190e8d2594323d3466fc23a895be
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD59e4e8915e111e1b47ab28007cc1e5fea
SHA1e98a128d5d5c1fd8bc713a8f1c00687d4c80e17e
SHA25655e785c63565c804838093baeb2fe57ac8256b1043889eaa7217e80cd0859a6e
SHA5125bd5933cf209b8ff8249c892ffa40956dea33aa566318b8535eb4f0d7656212606972d97e7b4b82036d7b72589f33d02d3a309328f26eb39bae18aad0b2a7b3b
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C:\Users\Admin\AppData\Local\3c72a42b-b2d7-4eed-9fc5-632b5574b6d3\e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148.exe
Filesize804KB
MD5c5c1ca56d106806d9b23a85fd3dd08dc
SHA1c665b88616eb5c4283c25188ff078145b218f07d
SHA256e904ad323124cfdc673dbdaa260b75f2cd592bacc5f4b442d2c00d759538f148
SHA512a0517342af6f496eba51b823e0d96ab33a1d6079fa2f6c01bc754f29ca28ed5324b88c8e82175a3b97e8e6d5ff029f20640a419aa7ba49089e57af813a8113e9