Analysis
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max time kernel
142s -
max time network
132s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
02-03-2023 08:41
Behavioral task
behavioral1
Sample
c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe
Resource
win10v2004-20230220-en
General
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Target
c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe
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Size
159KB
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MD5
2c8ecd01029e296bf5c6b743e07bcc8d
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SHA1
98534bd6d5c08cf14734a63713d930e12f69c5f0
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SHA256
c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6
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SHA512
983590ed6f4aacd9f80142b60f4f64627a2f639ccda9c32b3c6260caad10f0fd667cd0c5cc93dc26ace5c5c6b1a84b4e8a27623bba873bf15f81537e64889726
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SSDEEP
768:CM9Cr+M0fV7RW1JbUGmp7NxryR27zAFEzD/xworhF:CM92e7RAJu7vryR2XSWwOhF
Malware Config
Extracted
purecrypter
http://192.3.26.135/uo/Ksagb.png
Extracted
snakekeylogger
Protocol: smtp- Host:
us2.smtp.mailhostbox.com - Port:
587 - Username:
[email protected] - Password:
doDHyw%0 - Email To:
[email protected]
Signatures
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PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
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Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
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Snake Keylogger payload 1 IoCs
Processes:
resource yara_rule behavioral1/memory/1860-166-0x0000000000400000-0x0000000000426000-memory.dmp family_snakekeylogger -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
MSBuild.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe Key opened \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe Key opened \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 28 checkip.dyndns.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exedescription pid process target process PID 1472 set thread context of 1860 1472 c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe MSBuild.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 3 IoCs
Processes:
powershell.exeMSBuild.exepid process 216 powershell.exe 216 powershell.exe 1860 MSBuild.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exepowershell.exeMSBuild.exedescription pid process Token: SeDebugPrivilege 1472 c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe Token: SeDebugPrivilege 216 powershell.exe Token: SeDebugPrivilege 1860 MSBuild.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exedescription pid process target process PID 1472 wrote to memory of 216 1472 c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe powershell.exe PID 1472 wrote to memory of 216 1472 c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe powershell.exe PID 1472 wrote to memory of 216 1472 c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe powershell.exe PID 1472 wrote to memory of 1860 1472 c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe MSBuild.exe PID 1472 wrote to memory of 1860 1472 c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe MSBuild.exe PID 1472 wrote to memory of 1860 1472 c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe MSBuild.exe PID 1472 wrote to memory of 1860 1472 c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe MSBuild.exe PID 1472 wrote to memory of 1860 1472 c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe MSBuild.exe PID 1472 wrote to memory of 1860 1472 c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe MSBuild.exe PID 1472 wrote to memory of 1860 1472 c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe MSBuild.exe PID 1472 wrote to memory of 1860 1472 c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe MSBuild.exe -
outlook_office_path 1 IoCs
Processes:
MSBuild.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe -
outlook_win_path 1 IoCs
Processes:
MSBuild.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 MSBuild.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe"C:\Users\Admin\AppData\Local\Temp\c1c2c7f68cd6257da48226477b7be1b3d82b9f6ee7b1e421b7b9d5191f89c8c6.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1472 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:216 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1860
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82