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Analysis
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max time kernel
152s -
max time network
51s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
07/11/2022, 05:41
Behavioral task
behavioral1
Sample
a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe
Resource
win10v2004-20220812-en
General
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Target
a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe
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Size
585KB
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MD5
20431fc7cdc2c3a3861e429c79eeb8fd
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SHA1
b524121a14e6b174de3de872d2133fc8997ea437
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SHA256
a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38
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SHA512
bdf1a9b080309b2255f5d78f26be51c8e6b790980fc5e5193465e13b58545bfe586481a518f83829a5be1e2127b4b3204bb69d70fa6894edad9f9737aa718428
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SSDEEP
12288:rbpHYUKy5U1bo9t8DMRSW9vbciUiLuAvOxMt11i27QitjW:r5sJo6YrFUiyAak11LtjW
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 112 svchest000.exe -
resource yara_rule behavioral1/memory/1308-55-0x0000000000400000-0x0000000000597000-memory.dmp upx behavioral1/files/0x000a000000013482-58.dat upx behavioral1/memory/112-62-0x0000000000400000-0x0000000000597000-memory.dmp upx behavioral1/memory/1308-63-0x0000000000400000-0x0000000000597000-memory.dmp upx behavioral1/memory/1308-65-0x0000000000400000-0x0000000000597000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Kris = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe" a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 1308 a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe 112 svchest000.exe -
Drops file in Windows directory 4 IoCs
description ioc Process File opened for modification \??\c:\Windows\BJ.exe a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe File created \??\c:\Windows\BJ.exe a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe File created \??\c:\Windows\svchest000.exe a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe File opened for modification \??\c:\Windows\svchest000.exe a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1308 wrote to memory of 112 1308 a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe 27 PID 1308 wrote to memory of 112 1308 a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe 27 PID 1308 wrote to memory of 112 1308 a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe 27 PID 1308 wrote to memory of 112 1308 a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe"C:\Users\Admin\AppData\Local\Temp\a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38.exe"1⤵
- Adds Run key to start application
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1308 -
\??\c:\Windows\svchest000.exec:\Windows\svchest000.exe2⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:112
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
585KB
MD520431fc7cdc2c3a3861e429c79eeb8fd
SHA1b524121a14e6b174de3de872d2133fc8997ea437
SHA256a93ba778e42c95efaaa57a5a571e151d56118d930d855de588f1961604975f38
SHA512bdf1a9b080309b2255f5d78f26be51c8e6b790980fc5e5193465e13b58545bfe586481a518f83829a5be1e2127b4b3204bb69d70fa6894edad9f9737aa718428