Analysis
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max time kernel
60s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
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submitted
10-02-2023 08:56
General
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Target
ZAMÓWIENIE_DR-5-33499_pdf.exe
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Size
16KB
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MD5
de19e80d4eb300de7498fd561a9b7e02
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SHA1
d8abc5d5e011a5e27462d26e1a04e824a2c6c6ef
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SHA256
c5cb02082fc5df46b664578c2e049882a10fbd6be805ed345f8699e109fa8d1d
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SHA512
90b7da873e409602321bac44627db55cd3e35dce6374de5514697127734060527776153d59b28abffd2852545ce829dc2b4deff92508c1456016106d3973ed9b
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SSDEEP
96:kyH1vt86ZcAP9G/15ugGkXRVsAmdEL0dkLUdEL0d6Ddhk8v1/zNt:k8/5Pw/15LrX0Ami4CYi4Mn
Malware Config
Extracted
purecrypter
http://45.84.1.117/3477/Ptstngx.bmp
Signatures
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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.
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Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
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Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
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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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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious use of AdjustPrivilegeToken 2 IoCs
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Suspicious use of WriteProcessMemory 3 IoCs
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outlook_office_path 1 IoCs
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outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\ZAMÓWIENIE_DR-5-33499_pdf.exe"C:\Users\Admin\AppData\Local\Temp\ZAMÓWIENIE_DR-5-33499_pdf.exe"1⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
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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
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
40KB
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Filesize
5.6MB
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Filesize
584KB
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Filesize
136KB
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Filesize
1.8MB
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Filesize
320KB
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Filesize
40KB
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Filesize
6.2MB
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Filesize
408KB
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Filesize
120KB
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Filesize
6.5MB
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Filesize
104KB
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Filesize
408KB
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Filesize
216KB