Analysis
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max time kernel
133s -
max time network
143s -
platform
windows10-1703_x64 -
resource
win10-20240404-en -
resource tags
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submitted
24-06-2024 10:56
General
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Target
Yashma ransomware builder v1.2.exe
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Size
538KB
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MD5
13e878ed7e547523cffc5728f6ba4190
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SHA1
878ad3025f8ea6b61ad4521782035963b3675a52
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SHA256
f9a5a72ead096594c5d59abe706e3716f6000c3b4ebd7690f2eb114a37d1a7db
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SHA512
a7fa4f14deb65aa8de18e37e4fba3d2fa6ed696b70c4d0f1f49a65a4d43da76eff0d9a9c4703a6e3c13a37eb5d1a427e43be8c0ea6b1288a50a1c5175d9392c7
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SSDEEP
3072:tq0G/vqRT5i2YcRVm16Pn690H7GMgXuD//bFLAkCgkUKEyF9aT5Zt19r+E1/bFLz:U0G/GiWm16YaGMVFLQdD8FLz
Malware Config
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 1 IoCs
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Drops file in Windows directory 2 IoCs
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Suspicious behavior: EnumeratesProcesses 13 IoCs
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Suspicious use of AdjustPrivilegeToken 1 IoCs
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Suspicious use of SetWindowsHookEx 2 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\Yashma ransomware builder v1.2.exe"C:\Users\Admin\AppData\Local\Temp\Yashma ransomware builder v1.2.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SystemApps\Microsoft.Windows.SecHealthUI_cw5n1h2txyewy\SecHealthUI.exe"C:\Windows\SystemApps\Microsoft.Windows.SecHealthUI_cw5n1h2txyewy\SecHealthUI.exe" -ServerName:SecHealthUI.AppXep4x2tbtjws1v9qqs0rmb3hxykvkpqtn.mca1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
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C:\Windows\SystemApps\Microsoft.Windows.SecHealthUI_cw5n1h2txyewy\SecHealthUI.exe"C:\Windows\SystemApps\Microsoft.Windows.SecHealthUI_cw5n1h2txyewy\SecHealthUI.exe" -ServerName:SecHealthUI.AppXep4x2tbtjws1v9qqs0rmb3hxykvkpqtn.mca1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
70KB
MD5dc37deff2947a4ec8bf9b40a3dc25c49
SHA1422bdce2dc21c634760c8b06a60c4ebf131cc592
SHA25600dee1b03565baf7c105f1484f27a2e04d900538c153372482fbedd8cde61d85
SHA512bbe9730344e0f648c53d2d5c518791ce8d92c1f04e1b9646bb4feca24d5f41fae255eff57ad7c36ff1d26869ad25eede25bbd4e98a59267d41ee71f3885d9dd4
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Filesize
4KB
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Filesize
560KB
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Filesize
9.9MB
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Filesize
9.9MB
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Filesize
9.9MB
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Filesize
9.9MB