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Analysis
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max time kernel
42s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
06/12/2022, 18:19
Static task
static1
Behavioral task
behavioral1
Sample
dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe
Resource
win10v2004-20221111-en
General
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Target
dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe
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Size
55KB
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MD5
d347b62257f8b88a1e6939b32cec099b
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SHA1
5f0563e7b4eb3291e761b61c2d18f9cd2c60db7a
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SHA256
dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1
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SHA512
d97456f9ddbf4624bc3527222de398808715b36fe62a9f416929f67f5bedf0e95ed6948b8f81ec782137219410c39cdf0c989cb0864eed741cba4294b98a7a6f
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SSDEEP
1536:V3cpyORJLuB4P4AJJv4Romu/xtKGR8QzG852ncgt:V3c1fP4AJJv45GfbG8kb
Malware Config
Signatures
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Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1" dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe -
Deletes itself 1 IoCs
pid Process 636 cmd.exe -
Loads dropped DLL 1 IoCs
pid Process 1824 dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe -
Drops desktop.ini file(s) 1 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft1\Internat Explorer\Desktop.ini dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe -
Drops file in Program Files directory 3 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\Microsoft1\Internat Explorer\Desktop.ini dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe File created C:\Program Files (x86)\Microsoft1\Internat Explorer\target.lnk dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe File opened for modification C:\Program Files (x86)\Microsoft1\Internat Explorer attrib.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 9 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ogfile\DefaultIcon dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\ogfile\DefaultIcon\ = "%1" dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ogfile\shell dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ogfile\shell\open dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.og dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ogfile dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ogfile\shell\open\command dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\ogfile\shell\open\command\ = "explorer \"C:\\Program Files (x86)\\Microsoft%S\\Internat Explorer\"" dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.og\ = "ogfile" dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 1824 wrote to memory of 1872 1824 dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe 27 PID 1824 wrote to memory of 1872 1824 dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe 27 PID 1824 wrote to memory of 1872 1824 dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe 27 PID 1824 wrote to memory of 1872 1824 dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe 27 PID 1824 wrote to memory of 1872 1824 dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe 27 PID 1824 wrote to memory of 1872 1824 dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe 27 PID 1824 wrote to memory of 1872 1824 dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe 27 PID 1824 wrote to memory of 636 1824 dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe 30 PID 1824 wrote to memory of 636 1824 dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe 30 PID 1824 wrote to memory of 636 1824 dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe 30 PID 1824 wrote to memory of 636 1824 dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe 30 PID 1824 wrote to memory of 636 1824 dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe 30 PID 1824 wrote to memory of 636 1824 dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe 30 PID 1824 wrote to memory of 636 1824 dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe 30 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 1872 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe"C:\Users\Admin\AppData\Local\Temp\dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe"1⤵
- Modifies visibility of file extensions in Explorer
- Loads dropped DLL
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1824 -
C:\Windows\SysWOW64\attrib.exe"C:\Windows\System32\attrib.exe" "C:\Program Files (x86)\Microsoft1\Internat Explorer" +s2⤵
- Drops file in Program Files directory
- Views/modifies file attributes
PID:1872
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C:\Windows\SysWOW64\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\temp_tmp.bat" "2⤵
- Deletes itself
PID:636
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
250B
MD5ebe109caf9c0174fdd01eb071ca8b758
SHA166bba34ab14ce77f44115c1b9ad730bc39a156a6
SHA256e4d283d0008531dcde84a748944ca7f5434560fa925b8eee639da0b7bb44acb5
SHA51220a5a65823cc473bc262749368851a4bf6a1bee4eab7a9a12a54bf08f60d4fcfdb07b1906dce810d1e71b157ee15c8de8fda5d9a5938111f0e29e5eabce95e8c
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Filesize
11KB
MD500a0194c20ee912257df53bfe258ee4a
SHA1d7b4e319bc5119024690dc8230b9cc919b1b86b2
SHA256dc4da2ccadb11099076926b02764b2b44ad8f97cd32337421a4cc21a3f5448f3
SHA5123b38a2c17996c3b77ebf7b858a6c37415615e756792132878d8eddbd13cb06710b7da0e8b58104768f8e475fc93e8b44b3b1ab6f70ddf52edee111aaf5ef5667