Analysis
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max time kernel
150s -
max time network
93s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
04-04-2023 09:03
Static task
static1
Behavioral task
behavioral1
Sample
3.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
3.exe
Resource
win10v2004-20230220-en
General
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Target
3.exe
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Size
3.1MB
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MD5
a250763ca9419cce8d12b2bff06c9cec
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SHA1
12337290c7b6b4537a0ffcfa24c6089fcab06e34
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SHA256
17d9ea316738afcac65b55560be4b85d1add5df729474aba804b39fe4123d9b5
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SHA512
c361ca24e0616cea772a4ad3669f740ed7d36d8ac6a9d7f203d236ad1031b69e5ccbad3d474770b326e97372af2a81b10da50170b3fe9244974b4acbe15c06c0
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SSDEEP
49152:ddjqq/hVlVc7X5WOSxf8CHAdXA8YRFiamKcgJ0JLzxB9aWkSyI:dddvcr5WHf8yAy8AijK30dzD9aWf
Malware Config
Signatures
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Detect PureCrypter injector 33 IoCs
Processes:
resource yara_rule behavioral2/memory/4940-135-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-136-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-138-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-140-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-142-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-144-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-146-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-148-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-150-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-152-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-156-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-154-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-158-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-160-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-162-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-164-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-166-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-168-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-170-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-172-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-174-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-176-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-178-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-180-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-182-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-184-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-186-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-188-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-190-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-192-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-194-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-196-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter behavioral2/memory/4940-198-0x0000000005410000-0x000000000572E000-memory.dmp family_purecrypter -
PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
3.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation 3.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 2 IoCs
Processes:
powershell.exepid process 4456 powershell.exe 4456 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
3.exepowershell.exedescription pid process Token: SeDebugPrivilege 4940 3.exe Token: SeDebugPrivilege 4456 powershell.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
3.exedescription pid process target process PID 4940 wrote to memory of 4456 4940 3.exe powershell.exe PID 4940 wrote to memory of 4456 4940 3.exe powershell.exe PID 4940 wrote to memory of 4456 4940 3.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\3.exe"C:\Users\Admin\AppData\Local\Temp\3.exe"1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMwAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yiubglus.gvu.ps1Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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memory/4456-10269-0x0000000002D80000-0x0000000002DB6000-memory.dmpFilesize
216KB
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memory/4456-10284-0x0000000006360000-0x000000000637E000-memory.dmpFilesize
120KB
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memory/4456-10283-0x0000000004FB0000-0x0000000004FC0000-memory.dmpFilesize
64KB
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memory/4456-10282-0x0000000004FB0000-0x0000000004FC0000-memory.dmpFilesize
64KB
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memory/4456-10272-0x0000000005D10000-0x0000000005D76000-memory.dmpFilesize
408KB
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memory/4456-10271-0x0000000005540000-0x00000000055A6000-memory.dmpFilesize
408KB
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memory/4456-10270-0x00000000055F0000-0x0000000005C18000-memory.dmpFilesize
6.2MB
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memory/4940-174-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-184-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-150-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-152-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-156-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-154-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-158-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-160-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-162-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-164-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-166-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-168-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-170-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-172-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-133-0x00000000007B0000-0x0000000000ADC000-memory.dmpFilesize
3.2MB
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memory/4940-176-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-178-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-180-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-182-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-148-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-186-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-188-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-190-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-192-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-194-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-196-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-198-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-518-0x0000000005400000-0x0000000005410000-memory.dmpFilesize
64KB
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memory/4940-10268-0x00000000011C0000-0x00000000011E2000-memory.dmpFilesize
136KB
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memory/4940-146-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-144-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-142-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-140-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-138-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-136-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-135-0x0000000005410000-0x000000000572E000-memory.dmpFilesize
3.1MB
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memory/4940-134-0x0000000005400000-0x0000000005410000-memory.dmpFilesize
64KB