Analysis
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max time kernel
147s -
max time network
154s -
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, 02:25
Static task
static1
Behavioral task
behavioral1
Sample
9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
Resource
win11-20240412-en
General
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Target
9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
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Size
851KB
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MD5
6067c1f7658f5862dcce964ae8a9b049
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SHA1
de1c58620017ed7f4c11b5cf00321aa203425b2f
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SHA256
9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651
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SHA512
5c863b1977ac2e742638d96b9933222b475338b8f79501edd35fded93790ef4f8391896d70f1aa3197a317a3821c06f654af05804e01f23d47c1208a873cf138
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SSDEEP
12288:QEO9cG9msbbKVTvHio+ZnIaXNqft+O6j22gfphHTAg1ZEJIrV5tg:nO9esSTknl9qf4i2gnzAb2V5tg
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/2044-2-0x0000000004BA0000-0x0000000004CBB000-memory.dmp family_djvu behavioral1/memory/788-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/788-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/788-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/788-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/788-15-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4544-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4544-21-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4544-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4544-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4544-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4544-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4544-32-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4544-35-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4544-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4544-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4544-37-0x0000000000400000-0x0000000000537000-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 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3508 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\\9297c677-de07-47c4-8c93-629a13a84af4\\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe\" --AutoStart" 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.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 21 api.2ip.ua 31 api.2ip.ua 20 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2044 set thread context of 788 2044 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 4908 set thread context of 4544 4908 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 92 -
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 788 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 788 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 4544 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 4544 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 2044 wrote to memory of 788 2044 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 2044 wrote to memory of 788 2044 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 2044 wrote to memory of 788 2044 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 2044 wrote to memory of 788 2044 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 2044 wrote to memory of 788 2044 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 2044 wrote to memory of 788 2044 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 2044 wrote to memory of 788 2044 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 2044 wrote to memory of 788 2044 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 2044 wrote to memory of 788 2044 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 2044 wrote to memory of 788 2044 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 86 PID 788 wrote to memory of 3508 788 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 88 PID 788 wrote to memory of 3508 788 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 88 PID 788 wrote to memory of 3508 788 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 88 PID 788 wrote to memory of 4908 788 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 90 PID 788 wrote to memory of 4908 788 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 90 PID 788 wrote to memory of 4908 788 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 90 PID 4908 wrote to memory of 4544 4908 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 92 PID 4908 wrote to memory of 4544 4908 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 92 PID 4908 wrote to memory of 4544 4908 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 92 PID 4908 wrote to memory of 4544 4908 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 92 PID 4908 wrote to memory of 4544 4908 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 92 PID 4908 wrote to memory of 4544 4908 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 92 PID 4908 wrote to memory of 4544 4908 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 92 PID 4908 wrote to memory of 4544 4908 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 92 PID 4908 wrote to memory of 4544 4908 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 92 PID 4908 wrote to memory of 4544 4908 9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe 92
Processes
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C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe"C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2044 -
C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe"C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:788 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\9297c677-de07-47c4-8c93-629a13a84af4" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3508
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C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe"C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4908 -
C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe"C:\Users\Admin\AppData\Local\Temp\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4544
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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
MD5a796999c503d181cf67725ed32be3bfe
SHA161bed07e1ca6dd7325b65653307671f95cd943bc
SHA25654a3267f8825a4819df16f5448a9829081f9030088a02fa981222b43ec0fb392
SHA5125856964f0d0b6624577ce69751eab308994ef106eaf1de54fa4544caf362f4fbb94f99ceb4f9865746d01a9edce3dcdd685ad3767d761bdbf591ab20ec88081e
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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
MD56871b34be2256b7e34f1f01de14e0290
SHA1b30a4c79500987d1d932dce9e6457b241263df73
SHA2569b9a7bfd8d11848c451dcadc2eea8fd5d14c9f76af5473f7cbc8648248649952
SHA5128ab70305f7a83dcb63bc2b609a345965e705e4c2be19ecaa5b5b4a648f21c7ea039d6c1a97b1b7d6322b79a925b19159322a9f83f13a07886fbec7500bb45c18
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5eff8dce19955c6fb01ccfd0708a873ad
SHA17aec9eab87eadc8089697dfaa13ef53502f3e5d6
SHA2561887e6641c2edc0f74eff7a0541ad57bb8aa15cc3d45f33326c059bdfb126546
SHA512da4d75a8958a653abdbdbf58b557069db4bec3311b72230439e4f180e78736ee5358efd7c0da75373b49bed30438cc65f5776f4935cffd17d2bdaa5fbc50ce21
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C:\Users\Admin\AppData\Local\9297c677-de07-47c4-8c93-629a13a84af4\9e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651.exe
Filesize851KB
MD56067c1f7658f5862dcce964ae8a9b049
SHA1de1c58620017ed7f4c11b5cf00321aa203425b2f
SHA2569e539d4a2fd02d296f715429a74074fe98d363e0332a41de4e03bcb445d28651
SHA5125c863b1977ac2e742638d96b9933222b475338b8f79501edd35fded93790ef4f8391896d70f1aa3197a317a3821c06f654af05804e01f23d47c1208a873cf138