Analysis
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max time kernel
150s -
max time network
151s -
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, 16:04
Static task
static1
Behavioral task
behavioral1
Sample
d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe
Resource
win11-20240412-en
General
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Target
d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe
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Size
803KB
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MD5
bd9cc7d219c9c1b402e9e479077eb1fd
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SHA1
2b13c4ba018730a0e90c150a44f3e7bc127b465f
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SHA256
d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022
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SHA512
72fd8443954d232ff385d1b96267f4d651963af97441fe8f8ea0500576bba90617ebe60d881e0ad502c4385db922bcdb0b04ff7893921550ab05ec8a1c5c0d56
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SSDEEP
12288:vVZMkz6khHV4cghyGoTNFEFGPpz0R9BjrWafbJHvWID9FX0t5wovL+gCyla66:vVZGoTw20fBPWaVHek0toH
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/3092-2-0x0000000004B90000-0x0000000004CAB000-memory.dmp family_djvu behavioral1/memory/2188-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2188-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2188-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2188-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2188-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4532-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4532-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4532-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4532-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4532-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4532-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4532-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4532-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4532-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4532-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4532-39-0x0000000000400000-0x0000000000537000-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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3588 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1132431369-515282257-1998160155-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\27251b15-e46b-498c-9f7f-d393760feeef\\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe\" --AutoStart" d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.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 5 api.2ip.ua 7 api.2ip.ua 30 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3092 set thread context of 2188 3092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 89 PID 4092 set thread context of 4532 4092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 93 -
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 2188 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 2188 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 4532 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 4532 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 3092 wrote to memory of 2188 3092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 89 PID 3092 wrote to memory of 2188 3092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 89 PID 3092 wrote to memory of 2188 3092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 89 PID 3092 wrote to memory of 2188 3092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 89 PID 3092 wrote to memory of 2188 3092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 89 PID 3092 wrote to memory of 2188 3092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 89 PID 3092 wrote to memory of 2188 3092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 89 PID 3092 wrote to memory of 2188 3092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 89 PID 3092 wrote to memory of 2188 3092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 89 PID 3092 wrote to memory of 2188 3092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 89 PID 2188 wrote to memory of 3588 2188 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 90 PID 2188 wrote to memory of 3588 2188 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 90 PID 2188 wrote to memory of 3588 2188 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 90 PID 2188 wrote to memory of 4092 2188 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 91 PID 2188 wrote to memory of 4092 2188 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 91 PID 2188 wrote to memory of 4092 2188 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 91 PID 4092 wrote to memory of 4532 4092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 93 PID 4092 wrote to memory of 4532 4092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 93 PID 4092 wrote to memory of 4532 4092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 93 PID 4092 wrote to memory of 4532 4092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 93 PID 4092 wrote to memory of 4532 4092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 93 PID 4092 wrote to memory of 4532 4092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 93 PID 4092 wrote to memory of 4532 4092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 93 PID 4092 wrote to memory of 4532 4092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 93 PID 4092 wrote to memory of 4532 4092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 93 PID 4092 wrote to memory of 4532 4092 d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe 93
Processes
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C:\Users\Admin\AppData\Local\Temp\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe"C:\Users\Admin\AppData\Local\Temp\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3092 -
C:\Users\Admin\AppData\Local\Temp\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe"C:\Users\Admin\AppData\Local\Temp\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2188 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\27251b15-e46b-498c-9f7f-d393760feeef" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3588
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C:\Users\Admin\AppData\Local\Temp\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe"C:\Users\Admin\AppData\Local\Temp\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4092 -
C:\Users\Admin\AppData\Local\Temp\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe"C:\Users\Admin\AppData\Local\Temp\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4532
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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
MD5e0d37cfb478e0788ce7de5c767990144
SHA1c29cd8351dbca58151d553053dee74aedd67a702
SHA256fde2213bfc24ff1af64cb193a97d90206b4fdac1bf03da26bd657d0fcb6f939d
SHA5123ad80e40f01a45523b5d9b8b26852a12de07e368e4092f8b99e48c3e755a738dc01c1070f4dd19b67efd9abd0ef5fb1023bfb30c37310c932f2d9ab61d0acf87
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD55111374489959d64e55b5e104ab4e5b0
SHA13f76c62421acef80328923ca9820978cd6b93bad
SHA256b62ebf499608b31b25ae2f5904aaecf658e91a93eff19720ce27672b650fec15
SHA5122c67762ebbdec39d4155b0f98eaf82364516b9d325a89e0f2650ae5ce2babd89bde4b7492501b6d52ac2a484e1e7dfd29e11f2f2201a7c0839520cdb3db82d9e
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C:\Users\Admin\AppData\Local\27251b15-e46b-498c-9f7f-d393760feeef\d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022.exe
Filesize803KB
MD5bd9cc7d219c9c1b402e9e479077eb1fd
SHA12b13c4ba018730a0e90c150a44f3e7bc127b465f
SHA256d5893c95779c8c742ae460319ac45f40b0d3d0d4e393875aa680ce0fc0237022
SHA51272fd8443954d232ff385d1b96267f4d651963af97441fe8f8ea0500576bba90617ebe60d881e0ad502c4385db922bcdb0b04ff7893921550ab05ec8a1c5c0d56