Analysis
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max time kernel
144s -
max time network
113s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
16/04/2024, 07:58
Static task
static1
Behavioral task
behavioral1
Sample
5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe
Resource
win11-20240412-en
General
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Target
5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe
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Size
797KB
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MD5
e0f4511d749587854a4513380c78c0c1
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SHA1
11b656344f3e81f3574d8addd348430efcbb8a04
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SHA256
5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7
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SHA512
53eea41de3d9788e48a3e5be32b322fb81769488cdebcff206a7f0e2500253977e8a3e1feebe087e8dccad05d279661f28fafae36f7eca92a3b02f2b1ff6e48c
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SSDEEP
24576:nLZZzpVzAyjUykiCbIp7KAhY8SW49NvXJ/aOHK:DDLz1CUwAhLSxNvXJ/9
Malware Config
Extracted
djvu
http://sajdfue.com/test1/get.php
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extension
.uajs
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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/3844-2-0x0000000002710000-0x000000000282B000-memory.dmp family_djvu behavioral1/memory/4380-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4380-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4380-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4380-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4380-15-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1236-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1236-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1236-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1236-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1236-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1236-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1236-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1236-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1236-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1236-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/1236-37-0x0000000000400000-0x0000000000537000-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-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 2316 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b032fdc8-3c7d-4315-b41f-49c7af7877db\\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe\" --AutoStart" 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.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 19 api.2ip.ua 20 api.2ip.ua 36 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3844 set thread context of 4380 3844 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 89 PID 4836 set thread context of 1236 4836 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.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 4380 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 4380 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 1236 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 1236 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 3844 wrote to memory of 4380 3844 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 89 PID 3844 wrote to memory of 4380 3844 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 89 PID 3844 wrote to memory of 4380 3844 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 89 PID 3844 wrote to memory of 4380 3844 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 89 PID 3844 wrote to memory of 4380 3844 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 89 PID 3844 wrote to memory of 4380 3844 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 89 PID 3844 wrote to memory of 4380 3844 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 89 PID 3844 wrote to memory of 4380 3844 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 89 PID 3844 wrote to memory of 4380 3844 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 89 PID 3844 wrote to memory of 4380 3844 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 89 PID 4380 wrote to memory of 2316 4380 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 90 PID 4380 wrote to memory of 2316 4380 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 90 PID 4380 wrote to memory of 2316 4380 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 90 PID 4380 wrote to memory of 4836 4380 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 92 PID 4380 wrote to memory of 4836 4380 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 92 PID 4380 wrote to memory of 4836 4380 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 92 PID 4836 wrote to memory of 1236 4836 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 95 PID 4836 wrote to memory of 1236 4836 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 95 PID 4836 wrote to memory of 1236 4836 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 95 PID 4836 wrote to memory of 1236 4836 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 95 PID 4836 wrote to memory of 1236 4836 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 95 PID 4836 wrote to memory of 1236 4836 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 95 PID 4836 wrote to memory of 1236 4836 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 95 PID 4836 wrote to memory of 1236 4836 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 95 PID 4836 wrote to memory of 1236 4836 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 95 PID 4836 wrote to memory of 1236 4836 5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe 95
Processes
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C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe"C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3844 -
C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe"C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4380 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\b032fdc8-3c7d-4315-b41f-49c7af7877db" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:2316
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C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe"C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4836 -
C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe"C:\Users\Admin\AppData\Local\Temp\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1236
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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
MD577fff4010e48018b867bb350fb78b7c2
SHA131b0dfcc0b92a789cd5c94dbf8d0f5aca820ed31
SHA2563e95094f49fea7951fb5ea5551a8b344c1ec16ddaf4f5da7b6bfe1151afa9ee5
SHA51278a8fc7de1b3cbbc2225790bf55fd64b3c7fa922b4601dcbb1103cc12491da71ebae1eebfaa3a2ce2e0b3b3a7b7229dd448012c23a707f84aae8fe0e996c7e89
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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
MD57f8a706187165033cc4df123f3f82ad2
SHA142b2890d5f9d5e5b4e826c3622282f2cf60b9446
SHA256379fa5169261f064b5b95f578be9035ad2f26ea5e328bf4034dac594e3e37806
SHA512b602c3e495aaaf59984f6458997597c1132f5e980f0624b12dcbf361f99441e3d312a1eb3b9978c3fba16fb8eae41d905bfa21e9938eee1d51ffce768d7310b2
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD56879ab3c3b1cc16a7fc8b28bbe3f710c
SHA1e1463905da5434470e34293f2fbcd4d2642d5f64
SHA256f10f930241584c39f5413f9108031f3704f378b0c2cc7caf418bc827c6d67e1d
SHA512261e0a8d3b1daf417fe99a1cb30ca6e8cae1fe89742148a9b3a0df6904d3298a29f2afc0d8864bef51d61cdfec1b341f2488c02bf5d11195e5b42d58c6330322
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C:\Users\Admin\AppData\Local\b032fdc8-3c7d-4315-b41f-49c7af7877db\5879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7.exe
Filesize797KB
MD5e0f4511d749587854a4513380c78c0c1
SHA111b656344f3e81f3574d8addd348430efcbb8a04
SHA2565879a75784ceca8c6c8e9fad40d6a2f5ea6c7e265ee09b7763388ff1225cb4b7
SHA51253eea41de3d9788e48a3e5be32b322fb81769488cdebcff206a7f0e2500253977e8a3e1feebe087e8dccad05d279661f28fafae36f7eca92a3b02f2b1ff6e48c