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Analysis
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max time kernel
169s -
max time network
198s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
05/12/2022, 07:44
Static task
static1
Behavioral task
behavioral1
Sample
ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe
Resource
win10v2004-20221111-en
General
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Target
ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe
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Size
22.4MB
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MD5
0c0958afa2f46d9617a9fd6ab7468bb8
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SHA1
0771c861a7bdc702397766e7fc7c2c0e1315bbd8
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SHA256
ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e
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SHA512
7540571207bda3123c01688ae1779c272638a1d3698aa4a2f1dbe0c90ef4eaf1e0d2d3178c6cd255bf6736af3840d76f8aeef3b081e1b958891a3ecd17ff6a5a
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SSDEEP
49152:ZMk2fdATU8bAz6JKRR86gulWpeWmenMj0yzPaxrTCy58e6FjBL:ZMy+O6NlIeWmbj5rapCY56Fjt
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 4012 vsafe_setup.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\vsafe = "C:\\Program Files\\Muxjl\\Elfpu.exe /vsafe /{84FDCE47-03D4-49A7-B09F-1914BD167849}" ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe -
Drops file in Program Files directory 10 IoCs
description ioc Process File opened for modification C:\Program Files\Muxjl\hesoce\toneos.dll ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe File created C:\Program Files\Muxjl\megese.exe ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe File created C:\Program Files\Muxjl\dugese.exe ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe File opened for modification C:\Program Files\Muxjl\dugese.exe ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe File opened for modification C:\Program Files\Muxjl\hesoce\pat.xml ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe File created C:\Program Files\Common Files\System\Ole DB\MSPat.xml ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe File opened for modification C:\Program Files\Common Files\System\Ole DB\MSPat.xml ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe File created C:\Program Files\Muxjl\hesoce\pat.xml ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe File created C:\Program Files\Muxjl\hesoce\toneos.dll ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe File opened for modification C:\Program Files\Muxjl\megese.exe ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4012 vsafe_setup.exe 4012 vsafe_setup.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1264 wrote to memory of 4012 1264 ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe 84 PID 1264 wrote to memory of 4012 1264 ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe 84 PID 1264 wrote to memory of 4012 1264 ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe"C:\Users\Admin\AppData\Local\Temp\ab0701c1749a772533308206f51b7ca233bfe6231a37d9d7af779ea37a4f9e1e.exe"1⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1264 -
C:\Users\Admin\AppData\Local\Temp\g8635D\vsafe_setup.exeC:\Users\Admin\AppData\Local\Temp\g8635D\vsafe_setup.exe2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4012
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
500KB
MD580acfba01b15107fb95a61131dc8a4f2
SHA1605caa2f5754a5c2427e15c7f4d604c309671750
SHA2562021a9bb1862e2f7b80fca93ada4e65a858c6acdde38fbccfa6dc6d3d676deec
SHA51271cfb13c470f48c3bac14132788e75f0d62428acd69854d9d9f8556a52f52f8716b73912b4f58bc8c93efcc4f6da582b6259848996692147269f19559aa59207
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Filesize
500KB
MD580acfba01b15107fb95a61131dc8a4f2
SHA1605caa2f5754a5c2427e15c7f4d604c309671750
SHA2562021a9bb1862e2f7b80fca93ada4e65a858c6acdde38fbccfa6dc6d3d676deec
SHA51271cfb13c470f48c3bac14132788e75f0d62428acd69854d9d9f8556a52f52f8716b73912b4f58bc8c93efcc4f6da582b6259848996692147269f19559aa59207