Analysis Overview
SHA256
a539cbe05c220c5a791f2581c2a306273a9d954868428bffd1b01d2bd2fa721d
Threat Level: Known bad
The file a539cbe05c220c5a791f2581c2a306273a9d954868428bffd1b01d2bd2fa721d was found to be: Known bad.
Malicious Activity Summary
PureCrypter
Purecrypter family
Snake Keylogger payload
Snake Keylogger
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-03-02 05:13
Signatures
Purecrypter family
Analysis: behavioral1
Detonation Overview
Submitted
2023-03-02 05:13
Reported
2023-03-02 05:16
Platform
win10-20230220-en
Max time kernel
56s
Max time network
132s
Command Line
Signatures
PureCrypter
Snake Keylogger
Snake Keylogger payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Accesses Microsoft Outlook profiles
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-3346939869-2835594282-3775165920-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-3346939869-2835594282-3775165920-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
| Key opened | \REGISTRY\USER\S-1-5-21-3346939869-2835594282-3775165920-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | checkip.dyndns.org | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3236 set thread context of 4596 | N/A | C:\Users\Admin\AppData\Local\Temp\a539cbe05c220c5a791f2581c2a306273a9d954868428bffd1b01d2bd2fa721d.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a539cbe05c220c5a791f2581c2a306273a9d954868428bffd1b01d2bd2fa721d.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a539cbe05c220c5a791f2581c2a306273a9d954868428bffd1b01d2bd2fa721d.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\a539cbe05c220c5a791f2581c2a306273a9d954868428bffd1b01d2bd2fa721d.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
Suspicious use of WriteProcessMemory
outlook_office_path
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-3346939869-2835594282-3775165920-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
outlook_win_path
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-3346939869-2835594282-3775165920-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 | C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\a539cbe05c220c5a791f2581c2a306273a9d954868428bffd1b01d2bd2fa721d.exe
"C:\Users\Admin\AppData\Local\Temp\a539cbe05c220c5a791f2581c2a306273a9d954868428bffd1b01d2bd2fa721d.exe"
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
Network
| Country | Destination | Domain | Proto |
| US | 192.3.26.135:80 | 192.3.26.135 | tcp |
| US | 8.8.8.8:53 | 135.26.3.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | checkip.dyndns.org | udp |
| US | 193.122.130.0:80 | checkip.dyndns.org | tcp |
| US | 8.8.8.8:53 | 0.130.122.193.in-addr.arpa | udp |
| NL | 20.50.201.195:443 | tcp | |
| US | 8.8.8.8:53 | 63.13.109.52.in-addr.arpa | udp |
Files
memory/3236-117-0x0000000000530000-0x000000000054A000-memory.dmp
memory/3236-118-0x0000000005300000-0x00000000057FE000-memory.dmp
memory/3236-119-0x0000000004EE0000-0x0000000004F72000-memory.dmp
memory/3236-120-0x0000000005060000-0x0000000005070000-memory.dmp
memory/3236-121-0x0000000004EA0000-0x0000000004EAA000-memory.dmp
memory/3236-122-0x00000000066F0000-0x000000000684A000-memory.dmp
memory/3236-123-0x0000000007AD0000-0x0000000007B62000-memory.dmp
memory/3236-124-0x0000000007B90000-0x0000000007BB2000-memory.dmp
memory/3236-125-0x0000000007BC0000-0x0000000007F10000-memory.dmp
memory/3904-128-0x00000000066E0000-0x0000000006716000-memory.dmp
memory/3904-129-0x0000000004630000-0x0000000004640000-memory.dmp
memory/3904-130-0x0000000006D50000-0x0000000007378000-memory.dmp
memory/3904-131-0x0000000007490000-0x00000000074F6000-memory.dmp
memory/3904-132-0x00000000076E0000-0x0000000007746000-memory.dmp
memory/3904-133-0x00000000077D0000-0x00000000077EC000-memory.dmp
memory/3904-134-0x0000000007BB0000-0x0000000007BFB000-memory.dmp
memory/3904-135-0x0000000007F20000-0x0000000007F96000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xx4xtigo.cyt.ps1
| MD5 | c4ca4238a0b923820dcc509a6f75849b |
| SHA1 | 356a192b7913b04c54574d18c28d46e6395428ab |
| SHA256 | 6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b |
| SHA512 | 4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a |
memory/3904-150-0x00000000096D0000-0x0000000009D48000-memory.dmp
memory/3904-151-0x0000000008C70000-0x0000000008C8A000-memory.dmp
memory/3904-154-0x0000000004630000-0x0000000004640000-memory.dmp
memory/4596-158-0x0000000000400000-0x0000000000426000-memory.dmp
memory/4596-160-0x0000000005130000-0x00000000051CC000-memory.dmp
memory/4596-161-0x0000000005500000-0x0000000005510000-memory.dmp
memory/4596-162-0x0000000006120000-0x00000000062E2000-memory.dmp
memory/4596-163-0x0000000005500000-0x0000000005510000-memory.dmp