Analysis
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max time kernel
143s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
06/01/2024, 20:13
Static task
static1
Behavioral task
behavioral1
Sample
704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe
Resource
win10v2004-20231215-en
General
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Target
704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe
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Size
700KB
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MD5
73b7f3110048a36f783e7252bef3249c
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SHA1
56f2fc7e606031ba6784f8b8eac4c8358c69bbbb
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SHA256
704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15
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SHA512
4ee1b7dff9e2b5c3ca17c502235879045f93aed44b4dcd177c3fd92f16de0765f9727b32c223f897edd2cb55541810c491ff917f057be06bae602978036785a6
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SSDEEP
12288:YOMiOIe2cbO9hFe1tOwRun2wlIa2IXWaNmjCSFN74Oiv2BcM/cNS:1jeb6de1AhIa2O9mjPFNUnuZ/ck
Malware Config
Extracted
djvu
http://zexeq.com/test1/get.php
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extension
.cdwe
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offline_id
dSwr1XNNi5cIitB5eDPbMANcusB1dWGDB8ToUnt1
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payload_url
http://brusuax.com/dl/build2.exe
http://zexeq.com/files/1/build3.exe
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ransomnote
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Signatures
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Detect Vidar Stealer 5 IoCs
resource yara_rule behavioral2/memory/1648-69-0x0000000000400000-0x000000000063D000-memory.dmp family_vidar_v6 behavioral2/memory/4680-73-0x0000000000AC0000-0x0000000000AEA000-memory.dmp family_vidar_v6 behavioral2/memory/1648-74-0x0000000000400000-0x000000000063D000-memory.dmp family_vidar_v6 behavioral2/memory/1648-75-0x0000000000400000-0x000000000063D000-memory.dmp family_vidar_v6 behavioral2/memory/1648-76-0x0000000000400000-0x000000000063D000-memory.dmp family_vidar_v6 -
Detected Djvu ransomware 17 IoCs
resource yara_rule behavioral2/memory/3408-2-0x0000000002650000-0x000000000276B000-memory.dmp family_djvu behavioral2/memory/2392-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2392-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2392-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2392-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/2392-15-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1228-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1228-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1228-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1228-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1228-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1228-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1228-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1228-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1228-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1228-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral2/memory/1228-66-0x0000000000400000-0x0000000000537000-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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe Key value queried \REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe -
Executes dropped EXE 4 IoCs
pid Process 4680 build2.exe 552 build3.exe 1648 build2.exe 4768 build3.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3872 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\020855ee-53de-4071-a599-e9a881a9f2b8\\704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe\" --AutoStart" 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.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 39 api.2ip.ua 40 api.2ip.ua 50 api.2ip.ua -
Suspicious use of SetThreadContext 4 IoCs
description pid Process procid_target PID 3408 set thread context of 2392 3408 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 92 PID 4548 set thread context of 1228 4548 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 97 PID 4680 set thread context of 1648 4680 build2.exe 110 PID 552 set thread context of 4768 552 build3.exe 117 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
pid pid_target Process procid_target 1492 1648 WerFault.exe 110 -
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 904 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2392 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 2392 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 1228 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 1228 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe -
Suspicious use of WriteProcessMemory 54 IoCs
description pid Process procid_target PID 3408 wrote to memory of 2392 3408 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 92 PID 3408 wrote to memory of 2392 3408 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 92 PID 3408 wrote to memory of 2392 3408 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 92 PID 3408 wrote to memory of 2392 3408 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 92 PID 3408 wrote to memory of 2392 3408 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 92 PID 3408 wrote to memory of 2392 3408 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 92 PID 3408 wrote to memory of 2392 3408 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 92 PID 3408 wrote to memory of 2392 3408 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 92 PID 3408 wrote to memory of 2392 3408 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 92 PID 3408 wrote to memory of 2392 3408 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 92 PID 2392 wrote to memory of 3872 2392 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 94 PID 2392 wrote to memory of 3872 2392 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 94 PID 2392 wrote to memory of 3872 2392 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 94 PID 2392 wrote to memory of 4548 2392 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 96 PID 2392 wrote to memory of 4548 2392 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 96 PID 2392 wrote to memory of 4548 2392 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 96 PID 4548 wrote to memory of 1228 4548 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 97 PID 4548 wrote to memory of 1228 4548 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 97 PID 4548 wrote to memory of 1228 4548 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 97 PID 4548 wrote to memory of 1228 4548 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 97 PID 4548 wrote to memory of 1228 4548 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 97 PID 4548 wrote to memory of 1228 4548 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 97 PID 4548 wrote to memory of 1228 4548 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 97 PID 4548 wrote to memory of 1228 4548 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 97 PID 4548 wrote to memory of 1228 4548 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 97 PID 4548 wrote to memory of 1228 4548 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 97 PID 1228 wrote to memory of 4680 1228 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 108 PID 1228 wrote to memory of 4680 1228 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 108 PID 1228 wrote to memory of 4680 1228 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 108 PID 1228 wrote to memory of 552 1228 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 109 PID 1228 wrote to memory of 552 1228 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 109 PID 1228 wrote to memory of 552 1228 704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe 109 PID 4680 wrote to memory of 1648 4680 build2.exe 110 PID 4680 wrote to memory of 1648 4680 build2.exe 110 PID 4680 wrote to memory of 1648 4680 build2.exe 110 PID 4680 wrote to memory of 1648 4680 build2.exe 110 PID 4680 wrote to memory of 1648 4680 build2.exe 110 PID 4680 wrote to memory of 1648 4680 build2.exe 110 PID 4680 wrote to memory of 1648 4680 build2.exe 110 PID 4680 wrote to memory of 1648 4680 build2.exe 110 PID 4680 wrote to memory of 1648 4680 build2.exe 110 PID 4680 wrote to memory of 1648 4680 build2.exe 110 PID 552 wrote to memory of 4768 552 build3.exe 117 PID 552 wrote to memory of 4768 552 build3.exe 117 PID 552 wrote to memory of 4768 552 build3.exe 117 PID 552 wrote to memory of 4768 552 build3.exe 117 PID 552 wrote to memory of 4768 552 build3.exe 117 PID 552 wrote to memory of 4768 552 build3.exe 117 PID 552 wrote to memory of 4768 552 build3.exe 117 PID 552 wrote to memory of 4768 552 build3.exe 117 PID 552 wrote to memory of 4768 552 build3.exe 117 PID 4768 wrote to memory of 904 4768 build3.exe 118 PID 4768 wrote to memory of 904 4768 build3.exe 118 PID 4768 wrote to memory of 904 4768 build3.exe 118
Processes
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C:\Users\Admin\AppData\Local\Temp\704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe"C:\Users\Admin\AppData\Local\Temp\704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3408 -
C:\Users\Admin\AppData\Local\Temp\704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe"C:\Users\Admin\AppData\Local\Temp\704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2392 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\020855ee-53de-4071-a599-e9a881a9f2b8" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3872
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C:\Users\Admin\AppData\Local\Temp\704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe"C:\Users\Admin\AppData\Local\Temp\704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4548 -
C:\Users\Admin\AppData\Local\Temp\704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe"C:\Users\Admin\AppData\Local\Temp\704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1228 -
C:\Users\Admin\AppData\Local\f595df76-91b8-492d-8854-44406597cead\build2.exe"C:\Users\Admin\AppData\Local\f595df76-91b8-492d-8854-44406597cead\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4680 -
C:\Users\Admin\AppData\Local\f595df76-91b8-492d-8854-44406597cead\build2.exe"C:\Users\Admin\AppData\Local\f595df76-91b8-492d-8854-44406597cead\build2.exe"6⤵
- Executes dropped EXE
PID:1648 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1648 -s 20367⤵
- Program crash
PID:1492
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C:\Users\Admin\AppData\Local\f595df76-91b8-492d-8854-44406597cead\build3.exe"C:\Users\Admin\AppData\Local\f595df76-91b8-492d-8854-44406597cead\build3.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:552 -
C:\Users\Admin\AppData\Local\f595df76-91b8-492d-8854-44406597cead\build3.exe"C:\Users\Admin\AppData\Local\f595df76-91b8-492d-8854-44406597cead\build3.exe"6⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4768 -
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"7⤵
- Creates scheduled task(s)
PID:904
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1648 -ip 16481⤵PID:1976
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
MD58b3f66674e6838f15e010a3a85daa599
SHA158fc249721056bb240912535e042dc744c158aba
SHA256c94853517feb843767fd405e5bb1a7e01b8e284e39072bf5fd8ff4e7cc47b8b9
SHA51266f484aae25fd5aa9070652929a2d45c6106475f6bc94e16d49d2f1216d1b07923878205a5eb23afb5b662f527d6319dfbd9cea58d2fac13cd5d12dc141c822c
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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
MD5839cf5d22bba4d5a7511dadc32db9c5b
SHA1b7a4afac630090920e3826a7c90c57a4056c6a5f
SHA2563671f954f9f9638fe74622540a9ba5120d9b144e3cfa944d4ee15beca56618eb
SHA512e9603590da330da0d85b9a0e51474397861383431bab27e7938b34f50d3fef49b7579e14ae0b16b775b76eb3dd8d38efa236ccb7580a6de4d524a8d5d1abe6c2
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD537c7c319a8739d4284cd4a93774ea8e0
SHA16d6dd521dda0fbd1f1e5722fcc9d1b05b29b008a
SHA2565ada35eec016c9d7a125e1a564a214fb07e42efa5a7fe1c650c77ad81ed36561
SHA512448021d3491f6793768a4443d1f2e412bdaa1fa30712ce2e823ed1e8b875e1873e8b8e307911e2ae2ba043c8442358e1ebdc81ca9de6dd14a0958bbb89082e05
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C:\Users\Admin\AppData\Local\020855ee-53de-4071-a599-e9a881a9f2b8\704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15.exe
Filesize700KB
MD573b7f3110048a36f783e7252bef3249c
SHA156f2fc7e606031ba6784f8b8eac4c8358c69bbbb
SHA256704c5f63a1f5ee442b0fb943cb222f1032732f9f651917d51445ac36c8939a15
SHA5124ee1b7dff9e2b5c3ca17c502235879045f93aed44b4dcd177c3fd92f16de0765f9727b32c223f897edd2cb55541810c491ff917f057be06bae602978036785a6
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Filesize
247KB
MD51f7efac73d987dae200e36922267d8c6
SHA1a1bb90007d2e00025953c13ca742d767ebcce27e
SHA2565719504e2f4e976c8ce6fbfda399b80273e783ff05f61dfd1f1bd4737f0bde8a
SHA51275ef83a7e079e553a98e60dd73a9eebbaa793ced7bbd8a712a8f7f363349456d12b3766481d03d00f376cf31c4697afd934eb9b29a2e70727a70a9f463d03bed
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Filesize
299KB
MD541b883a061c95e9b9cb17d4ca50de770
SHA11daf96ec21d53d9a4699cea9b4db08cda6fbb5ad
SHA256fef2c8ca07c500e416fd7700a381c39899ee26ce1119f62e7c65cf922ce8b408
SHA512cdd1bb3a36182575cd715a52815765161eeaa3849e72c1c2a9a4e84cc43af9f8ec4997e642702bb3de41f162d2e8fd8717f6f8302bba5306821ee4d155626319