Analysis
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max time kernel
152s -
max time network
96s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
29-11-2022 17:35
Static task
static1
Behavioral task
behavioral1
Sample
7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a.exe
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Size
164KB
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MD5
73a7b0c956a843768e9fa9843d2dba10
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SHA1
a5eeaa7ca702c49fe82ef4f7eac4b745a6774130
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SHA256
7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a
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SHA512
abcb60bc4ebf347575a5b0282aa5c1d6a1738e01e6cd0c05a10f9c825fd0c732ecb88dce2cb378d7ff83b98edb9391e2344360c3caef00226c05d500c465a20b
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SSDEEP
3072:JoHDN+3uCog8lq0mEQZXPb+OXBJatOdS7dcovquoF+N7bZD16iYIQusGGTkLGFMD:gGu9Tlqn3XPaptOdS7dcovquoF+N7bZJ
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 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" 7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a.exe Set value (int) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" ynjef.exe -
Executes dropped EXE 1 IoCs
pid Process 556 ynjef.exe -
Loads dropped DLL 2 IoCs
pid Process 2036 7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a.exe 2036 7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a.exe -
Adds Run key to start application 2 TTPs 27 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /f" 7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /l" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /z" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /k" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /j" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /p" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /u" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /w" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /s" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /v" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /f" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /h" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /x" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /e" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /y" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /t" ynjef.exe Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /b" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /n" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /i" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /m" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /d" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /r" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /o" ynjef.exe Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /g" ynjef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\ynjef = "C:\\Users\\Admin\\ynjef.exe /q" ynjef.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2036 7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe 556 ynjef.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2036 7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a.exe 556 ynjef.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2036 wrote to memory of 556 2036 7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a.exe 28 PID 2036 wrote to memory of 556 2036 7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a.exe 28 PID 2036 wrote to memory of 556 2036 7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a.exe 28 PID 2036 wrote to memory of 556 2036 7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a.exe"C:\Users\Admin\AppData\Local\Temp\7f3224d1b37ed70a6e08ff03b6d0fe5cc2c311b4949b70d987c86dc9acc6cb9a.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2036 -
C:\Users\Admin\ynjef.exe"C:\Users\Admin\ynjef.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
PID:556
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
164KB
MD52a2f42a0a1e98432ea502ef15c7024ef
SHA13a46dc6c99e2e4f5dfdc2cee56c06f3a6ad2bd11
SHA2564a3899445afae65e3d342b8c12b3761becda3ef14e97cab6852997093033bd93
SHA5125f2ac442f626e9103626974452e3777ed3d97ba1e217f8b44255e679108fe80d9746040e86574f6d12aa7a8cbeb36db72ee4f0b634924058170c308bbdffc2af
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Filesize
164KB
MD52a2f42a0a1e98432ea502ef15c7024ef
SHA13a46dc6c99e2e4f5dfdc2cee56c06f3a6ad2bd11
SHA2564a3899445afae65e3d342b8c12b3761becda3ef14e97cab6852997093033bd93
SHA5125f2ac442f626e9103626974452e3777ed3d97ba1e217f8b44255e679108fe80d9746040e86574f6d12aa7a8cbeb36db72ee4f0b634924058170c308bbdffc2af
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Filesize
164KB
MD52a2f42a0a1e98432ea502ef15c7024ef
SHA13a46dc6c99e2e4f5dfdc2cee56c06f3a6ad2bd11
SHA2564a3899445afae65e3d342b8c12b3761becda3ef14e97cab6852997093033bd93
SHA5125f2ac442f626e9103626974452e3777ed3d97ba1e217f8b44255e679108fe80d9746040e86574f6d12aa7a8cbeb36db72ee4f0b634924058170c308bbdffc2af
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Filesize
164KB
MD52a2f42a0a1e98432ea502ef15c7024ef
SHA13a46dc6c99e2e4f5dfdc2cee56c06f3a6ad2bd11
SHA2564a3899445afae65e3d342b8c12b3761becda3ef14e97cab6852997093033bd93
SHA5125f2ac442f626e9103626974452e3777ed3d97ba1e217f8b44255e679108fe80d9746040e86574f6d12aa7a8cbeb36db72ee4f0b634924058170c308bbdffc2af