Analysis
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max time kernel
147s -
max time network
167s -
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, 20:08
Static task
static1
Behavioral task
behavioral1
Sample
e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral2
Sample
e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe
Resource
win11-20240412-en
General
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Target
e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe
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Size
819KB
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MD5
bd5b5a965a4c6686b45ab1b04308f846
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SHA1
299acc22ef2a984a551742e0932180388f05c1df
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SHA256
e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4
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SHA512
4ec023c1261e5b6c0f92053df7a0fdfbbd9231463b6f130ba8327e7cfc34b1d97b1c123975c44155c569b040e78cd29a4958c6fcda94b3acca95153d1098cad7
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SSDEEP
12288:p302+BkzBWU8pv7+2uJMPNsm17R8Cigjp074+BlelKFzNBY2k9Qt7hdkMPTfPJU0:p3a7duJMWmn854+3P5Nt7hPfPO/uA8Z
Malware Config
Extracted
djvu
http://sajdfue.com/test2/get.php
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extension
.uazq
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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/3008-2-0x0000000004B90000-0x0000000004CAB000-memory.dmp family_djvu behavioral1/memory/2632-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2632-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2632-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2632-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2632-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3224-22-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3224-23-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3224-24-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3224-29-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3224-30-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3224-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3224-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3224-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3224-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3224-38-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3224-39-0x0000000000400000-0x0000000000537000-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-1-5-21-3198953144-1466794930-246379610-1000\Control Panel\International\Geo\Nation e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3084 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\\f1eb81a6-adc4-48bd-b741-3ac08f5f5afe\\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe\" --AutoStart" e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.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 10 api.2ip.ua 11 api.2ip.ua 17 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3008 set thread context of 2632 3008 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 83 PID 3276 set thread context of 3224 3276 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 87 -
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 2632 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 2632 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 3224 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 3224 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 3008 wrote to memory of 2632 3008 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 83 PID 3008 wrote to memory of 2632 3008 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 83 PID 3008 wrote to memory of 2632 3008 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 83 PID 3008 wrote to memory of 2632 3008 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 83 PID 3008 wrote to memory of 2632 3008 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 83 PID 3008 wrote to memory of 2632 3008 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 83 PID 3008 wrote to memory of 2632 3008 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 83 PID 3008 wrote to memory of 2632 3008 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 83 PID 3008 wrote to memory of 2632 3008 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 83 PID 3008 wrote to memory of 2632 3008 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 83 PID 2632 wrote to memory of 3084 2632 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 84 PID 2632 wrote to memory of 3084 2632 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 84 PID 2632 wrote to memory of 3084 2632 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 84 PID 2632 wrote to memory of 3276 2632 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 85 PID 2632 wrote to memory of 3276 2632 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 85 PID 2632 wrote to memory of 3276 2632 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 85 PID 3276 wrote to memory of 3224 3276 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 87 PID 3276 wrote to memory of 3224 3276 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 87 PID 3276 wrote to memory of 3224 3276 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 87 PID 3276 wrote to memory of 3224 3276 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 87 PID 3276 wrote to memory of 3224 3276 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 87 PID 3276 wrote to memory of 3224 3276 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 87 PID 3276 wrote to memory of 3224 3276 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 87 PID 3276 wrote to memory of 3224 3276 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 87 PID 3276 wrote to memory of 3224 3276 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 87 PID 3276 wrote to memory of 3224 3276 e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe"C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3008 -
C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe"C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2632 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\f1eb81a6-adc4-48bd-b741-3ac08f5f5afe" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3084
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C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe"C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3276 -
C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe"C:\Users\Admin\AppData\Local\Temp\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3224
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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
MD53c6a98dff2c8e5d41183fb934602bccf
SHA1389eea4f6c8b9a19dd6efd65b2c979feeb4262a7
SHA2568c5e90026091280487ae42d5c0f266528cacb6de18c7f3d693ecfdb547b06ac8
SHA512fde8e5de812641dc896e8d8182dcf4244670e431f3310aba576f0f330a9d8a4221eb7513005e9755512d0c645cbf164c4c5f8872689d2e52a58b3f39668de8fd
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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
MD5fce7387f11f2fb2cfc031209f2f542d9
SHA125ada36a9a24dc962f5a7838e436ddbbaea684fd
SHA256279b27327d25cd7f1b97a04d9b30c3f31a05f6fe9839bc9329fc471015d121be
SHA5122e786736cce39251e61ea8499ee2f66c2918ad48164f6cd6eed181f7d32467a91e60ef7b47ba3aad0f0e570bea02b2cf8ccb01f89d2bf7e3dc44eb6eeda68791
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize392B
MD5492823775aaafff1544ac89dc17c8943
SHA124862048fe7a99ccbe04241ba1f1ba9f7088f137
SHA256000516528fdf112e5a835abb2b3baf2affad6afcefff63b24923e3946014bd24
SHA5124b5f0883f128ff7261674da8e9ad9e9cac5715fdab3bfe0791b79159802e3f6756dc1a40fb19e6d4ea313d8933e7f19e34353c230272fac5d1c3b351e056056b
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C:\Users\Admin\AppData\Local\f1eb81a6-adc4-48bd-b741-3ac08f5f5afe\e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4.exe
Filesize819KB
MD5bd5b5a965a4c6686b45ab1b04308f846
SHA1299acc22ef2a984a551742e0932180388f05c1df
SHA256e27f72f9af46b84ad025e906084ae71a8581ca4f633331454f51cde2692c54d4
SHA5124ec023c1261e5b6c0f92053df7a0fdfbbd9231463b6f130ba8327e7cfc34b1d97b1c123975c44155c569b040e78cd29a4958c6fcda94b3acca95153d1098cad7