Analysis
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max time kernel
143s -
max time network
125s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
26/04/2024, 05:00
Static task
static1
Behavioral task
behavioral1
Sample
589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe
Resource
win11-20240412-en
General
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Target
589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe
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Size
760KB
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MD5
b15ef523248fef029925a13e734f0d6a
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SHA1
d10b5c36d35a5b1f381a75c9f70e4e54e13a9adb
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SHA256
589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd
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SHA512
7444089d471faabc7252497eca92116ffa16a7bf863f44f24efda386f43fdab91361ddcb0f8dacf28cd697d70c08e68ebe062b68f066991f0c07e20c43c8da7a
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SSDEEP
12288:VXTQb18sh8zXGklrAtTuMdp0ttYKHypYHy9EbRc0YQkQCA+taC+Y6JbOp5soSyB4:Vy8sh8zXVlrQTukIY930go+ECLp5soSH
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.bgjs
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offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 18 IoCs
resource yara_rule behavioral1/memory/4636-2-0x0000000005D60000-0x0000000005E7B000-memory.dmp family_djvu behavioral1/memory/3708-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3708-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3708-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3708-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3708-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4160-20-0x0000000004300000-0x0000000004399000-memory.dmp family_djvu behavioral1/memory/3560-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3560-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3560-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3560-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3560-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3560-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3560-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3560-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3560-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3560-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3560-39-0x0000000000400000-0x0000000000537000-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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 1904 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\db0a2812-c8a2-484e-ad1f-a6b160bcc4a9\\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe\" --AutoStart" 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.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 9 api.2ip.ua 27 api.2ip.ua 8 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4636 set thread context of 3708 4636 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 87 PID 4160 set thread context of 3560 4160 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 94 -
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 3708 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 3708 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 3560 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 3560 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 4636 wrote to memory of 3708 4636 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 87 PID 4636 wrote to memory of 3708 4636 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 87 PID 4636 wrote to memory of 3708 4636 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 87 PID 4636 wrote to memory of 3708 4636 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 87 PID 4636 wrote to memory of 3708 4636 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 87 PID 4636 wrote to memory of 3708 4636 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 87 PID 4636 wrote to memory of 3708 4636 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 87 PID 4636 wrote to memory of 3708 4636 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 87 PID 4636 wrote to memory of 3708 4636 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 87 PID 4636 wrote to memory of 3708 4636 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 87 PID 3708 wrote to memory of 1904 3708 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 91 PID 3708 wrote to memory of 1904 3708 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 91 PID 3708 wrote to memory of 1904 3708 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 91 PID 3708 wrote to memory of 4160 3708 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 92 PID 3708 wrote to memory of 4160 3708 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 92 PID 3708 wrote to memory of 4160 3708 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 92 PID 4160 wrote to memory of 3560 4160 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 94 PID 4160 wrote to memory of 3560 4160 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 94 PID 4160 wrote to memory of 3560 4160 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 94 PID 4160 wrote to memory of 3560 4160 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 94 PID 4160 wrote to memory of 3560 4160 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 94 PID 4160 wrote to memory of 3560 4160 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 94 PID 4160 wrote to memory of 3560 4160 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 94 PID 4160 wrote to memory of 3560 4160 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 94 PID 4160 wrote to memory of 3560 4160 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 94 PID 4160 wrote to memory of 3560 4160 589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe"C:\Users\Admin\AppData\Local\Temp\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4636 -
C:\Users\Admin\AppData\Local\Temp\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe"C:\Users\Admin\AppData\Local\Temp\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3708 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\db0a2812-c8a2-484e-ad1f-a6b160bcc4a9" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:1904
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C:\Users\Admin\AppData\Local\Temp\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe"C:\Users\Admin\AppData\Local\Temp\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4160 -
C:\Users\Admin\AppData\Local\Temp\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe"C:\Users\Admin\AppData\Local\Temp\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3560
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize1KB
MD526f403621df973e369b7b13c6aba9ccb
SHA1ca3e85e908d9532f384c0560797f4e379bd4a0a0
SHA2560e9d6e111822d17e4c57df845d4fdacc5477adec069db8eecd3be0d11fc84533
SHA512d5bfab31e8c913cd97b83d92c56e58a3c225975537006b42124cb1cf4e813c635c30d6aa5010ecec54c1e8fa9eeb44c93f2b955216e7509dd79f1e074e340225
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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
MD5c26b9a58b66d99103dbd68dc4ff94dab
SHA1a2ad1208ec88bd01956d063a47ff2791ddb5af15
SHA2563cc609c0d735c00b93b5837e712ce8b22edd145d4379e31a9cc489b853f51543
SHA51287ef2c31790e84f4fa8a5d55937a0c46952e2c320e394bc646dc9fcfd1c4bcc973bf67116d323bb31396c4e0333cc92a0515e66d7f1aadc7c8c663fc8052e739
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5ef8186aed63cebd64118e428339b8f28
SHA1d1955445bccc68409ba45597a22616493064e5f3
SHA256fe2ada19829bf14f1355d9cb117912e190f7e62d7ee2ca6c275db8bbe2a27027
SHA512951bbea827ae793bc0c943d4205c03a93ad89c092e3ea286b6347b4c5dfe3d212bcee6d648f1cb9db2a60871ce5dd5bb6f2bd3e2d6af0160aaa2766499c81e97
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C:\Users\Admin\AppData\Local\db0a2812-c8a2-484e-ad1f-a6b160bcc4a9\589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd.exe
Filesize760KB
MD5b15ef523248fef029925a13e734f0d6a
SHA1d10b5c36d35a5b1f381a75c9f70e4e54e13a9adb
SHA256589085df62271df850294b9d599ab97bf57a7ecce2cd8c91e9dbc627a472e8fd
SHA5127444089d471faabc7252497eca92116ffa16a7bf863f44f24efda386f43fdab91361ddcb0f8dacf28cd697d70c08e68ebe062b68f066991f0c07e20c43c8da7a