Analysis
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max time kernel
188s -
max time network
50s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
05-12-2022 18:55
Static task
static1
Behavioral task
behavioral1
Sample
b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe
Resource
win7-20221111-en
windows7-x64
Behavioral task
behavioral2
Sample
b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
General
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Target
b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe
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Size
80KB
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MD5
597f2accb7c2beb1507fad27ac999b48
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SHA1
61c2135b0d9055a31cad71c4292281d4cf899353
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SHA256
b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d
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SHA512
65efb6ab30829fec2940be8b37b63d1feed607533fdb50a132f413e16bfdfc0235a0b23ead186906f89ae7c88ff1e277c5aa5a3b2fad4e22d958ff6b8cf7c36c
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SSDEEP
768:ev6nMfqQ24MFSCujc8ebdtF5EmpW/p/hxRSH9NxIkL9v/Q6sWD:evrMKmZKmpSFhxRSHdL9bsS
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" youifeg.exe -
Executes dropped EXE 1 IoCs
pid Process 1064 youifeg.exe -
Loads dropped DLL 2 IoCs
pid Process 1664 b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe 1664 b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ youifeg.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\youifeg = "C:\\Users\\Admin\\youifeg.exe" youifeg.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 1 IoCs
pid pid_target Process procid_target 584 1664 WerFault.exe 22 -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe 1064 youifeg.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1664 b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe 1064 youifeg.exe -
Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 1664 wrote to memory of 1064 1664 b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe 28 PID 1664 wrote to memory of 1064 1664 b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe 28 PID 1664 wrote to memory of 1064 1664 b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe 28 PID 1664 wrote to memory of 1064 1664 b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe 28 PID 1664 wrote to memory of 584 1664 b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe 29 PID 1664 wrote to memory of 584 1664 b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe 29 PID 1664 wrote to memory of 584 1664 b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe 29 PID 1664 wrote to memory of 584 1664 b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe 29 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 1664 1064 youifeg.exe 22 PID 1064 wrote to memory of 584 1064 youifeg.exe 29 PID 1064 wrote to memory of 584 1064 youifeg.exe 29
Processes
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C:\Users\Admin\AppData\Local\Temp\b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe"C:\Users\Admin\AppData\Local\Temp\b753bdf2aca005ef404ed7002f697a07a12e0c6a18a3b7a95f0e6051d9b37c9d.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1664 -
C:\Users\Admin\youifeg.exe"C:\Users\Admin\youifeg.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1064
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1664 -s 7922⤵
- Program crash
PID:584
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
80KB
MD53c43dfe76b45beb160bb3ffc619efe15
SHA116a1c9f8c304207bc275e840da6d6837fa5d4651
SHA2567e593f8da1b30357308b42f86d8a0c8172c36c235c9376d2ec08bfa16ad4c2c6
SHA512bb0111b48bc2fbc7c2b0a68e2635ae3a9344a361f0ea3f13a9a89b9aee7e496a17bea5c8d4c3408bcd9949162871255a5eb35280401ae90090e1c3cc5e3cc3ad
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Filesize
80KB
MD53c43dfe76b45beb160bb3ffc619efe15
SHA116a1c9f8c304207bc275e840da6d6837fa5d4651
SHA2567e593f8da1b30357308b42f86d8a0c8172c36c235c9376d2ec08bfa16ad4c2c6
SHA512bb0111b48bc2fbc7c2b0a68e2635ae3a9344a361f0ea3f13a9a89b9aee7e496a17bea5c8d4c3408bcd9949162871255a5eb35280401ae90090e1c3cc5e3cc3ad
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Filesize
80KB
MD53c43dfe76b45beb160bb3ffc619efe15
SHA116a1c9f8c304207bc275e840da6d6837fa5d4651
SHA2567e593f8da1b30357308b42f86d8a0c8172c36c235c9376d2ec08bfa16ad4c2c6
SHA512bb0111b48bc2fbc7c2b0a68e2635ae3a9344a361f0ea3f13a9a89b9aee7e496a17bea5c8d4c3408bcd9949162871255a5eb35280401ae90090e1c3cc5e3cc3ad
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Filesize
80KB
MD53c43dfe76b45beb160bb3ffc619efe15
SHA116a1c9f8c304207bc275e840da6d6837fa5d4651
SHA2567e593f8da1b30357308b42f86d8a0c8172c36c235c9376d2ec08bfa16ad4c2c6
SHA512bb0111b48bc2fbc7c2b0a68e2635ae3a9344a361f0ea3f13a9a89b9aee7e496a17bea5c8d4c3408bcd9949162871255a5eb35280401ae90090e1c3cc5e3cc3ad