Analysis
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max time kernel
47s -
max time network
50s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
03-02-2023 19:22
Static task
static1
Behavioral task
behavioral1
Sample
Loader.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
Loader.exe
Resource
win10v2004-20220901-en
General
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Target
Loader.exe
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Size
1.6MB
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MD5
a44e526804469076d712e8a05ddd7759
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SHA1
7010fda540e70139020a7a79730e74e99bd8e6c9
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SHA256
46d7128963bde013c8ec359b285e47eabbf9c88e332735e02ced518773e8e95f
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SHA512
04c40ef00c80d641c4f7bced8aefc180d695ea23ef79e272167f1a567484be2ab7031ca55a246cbeba1ed0c0ed93223fc2a33daed7f2048c62f169f0e6325b36
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SSDEEP
49152:fBvdZG5o8InNXL9Qn0HpZjI64n2hcyfT2:pFZG5oNnRfh9
Malware Config
Signatures
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Detect PureCrypter injector 1 IoCs
Processes:
resource yara_rule behavioral1/memory/1692-55-0x000000001BEF0000-0x000000001C1C8000-memory.dmp family_purecrypter -
Modifies WinLogon for persistence 2 TTPs 1 IoCs
Processes:
Loader.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\Google\\Chrome.exe\"," Loader.exe -
PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Processes:
Loader.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474 Loader.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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 Loader.exe -
Suspicious behavior: EnumeratesProcesses 11 IoCs
Processes:
powershell.exeLoader.exepid process 1648 powershell.exe 1692 Loader.exe 1692 Loader.exe 1692 Loader.exe 1692 Loader.exe 1692 Loader.exe 1692 Loader.exe 1692 Loader.exe 1692 Loader.exe 1692 Loader.exe 1692 Loader.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.exeLoader.exedescription pid process Token: SeDebugPrivilege 1648 powershell.exe Token: SeDebugPrivilege 1692 Loader.exe -
Suspicious use of WriteProcessMemory 33 IoCs
Processes:
Loader.exedescription pid process target process PID 1692 wrote to memory of 1648 1692 Loader.exe powershell.exe PID 1692 wrote to memory of 1648 1692 Loader.exe powershell.exe PID 1692 wrote to memory of 1648 1692 Loader.exe powershell.exe PID 1692 wrote to memory of 1012 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1012 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1012 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 328 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 328 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 328 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1536 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1536 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1536 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1052 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1052 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1052 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1604 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1604 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1604 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1244 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1244 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1244 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1880 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1880 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1880 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1172 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1172 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1172 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1508 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1508 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1508 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1580 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1580 1692 Loader.exe MSBuild.exe PID 1692 wrote to memory of 1580 1692 Loader.exe MSBuild.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Loader.exe"C:\Users\Admin\AppData\Local\Temp\Loader.exe"1⤵
- Modifies WinLogon for persistence
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1692 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMwAyAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1648 -
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe2⤵PID:1012
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe2⤵PID:328
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe2⤵PID:1536
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe2⤵PID:1052
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe2⤵PID:1604
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe2⤵PID:1244
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe2⤵PID:1880
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe2⤵PID:1172
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe2⤵PID:1508
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe2⤵PID:1580
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1648-60-0x000007FEEB9E0000-0x000007FEEC53D000-memory.dmpFilesize
11.4MB
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memory/1648-62-0x000000001B710000-0x000000001BA0F000-memory.dmpFilesize
3.0MB
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memory/1648-56-0x0000000000000000-mapping.dmp
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memory/1648-57-0x000007FEFBB31000-0x000007FEFBB33000-memory.dmpFilesize
8KB
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memory/1648-58-0x000007FEEC540000-0x000007FEECF63000-memory.dmpFilesize
10.1MB
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memory/1648-65-0x000000000245B000-0x000000000247A000-memory.dmpFilesize
124KB
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memory/1648-61-0x0000000002454000-0x0000000002457000-memory.dmpFilesize
12KB
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memory/1648-63-0x000000000245B000-0x000000000247A000-memory.dmpFilesize
124KB
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memory/1648-64-0x0000000002454000-0x0000000002457000-memory.dmpFilesize
12KB
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memory/1692-54-0x0000000000C10000-0x0000000000DB2000-memory.dmpFilesize
1.6MB
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memory/1692-55-0x000000001BEF0000-0x000000001C1C8000-memory.dmpFilesize
2.8MB
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memory/1692-59-0x000000001B017000-0x000000001B036000-memory.dmpFilesize
124KB
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memory/1692-66-0x000000001C550000-0x000000001C60C000-memory.dmpFilesize
752KB
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memory/1692-67-0x000000001B017000-0x000000001B036000-memory.dmpFilesize
124KB