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Analysis
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max time kernel
102s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
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submitted
10/02/2023, 21:34
General
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Target
swift_09_feb_2023_usd_42019347593691658483-37497169570422045546309802-2379924.exe
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Size
11KB
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MD5
14fec5297bef8c5fa6d3f0f5934dea32
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SHA1
5549beb12b3635e878b174ae93d47a147e2f6d98
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SHA256
bc080be46ac6e8aaff225091e2afdb6074fed20e30d30e1ad018f58a1e1901b7
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SHA512
a7889770f7bed2ed2aff36c67cda577cd0ebc064c93532d425d0207bb60f55ee474d6e433402b86704d3f80e442209df53f0bd885d5fcd72b5b229ff5697fda6
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SSDEEP
192:cliHh1RDurJEC+88OSM4+pmqQcNM2YDM:cG1d2JEC+lKFI
Malware Config
Extracted
purecrypter
https://vinosbiodinamicos.com/Wnsixjk.bmp
Extracted
agenttesla
Protocol: smtp- Host:
mail.privateemail.com - Port:
587 - Username:
[email protected] - Password:
Jk$yZlcm39_3Sh* - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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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 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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Adds Run key to start application 2 TTPs 1 IoCs
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Suspicious use of SetThreadContext 1 IoCs
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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 3 IoCs
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Suspicious use of WriteProcessMemory 11 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\swift_09_feb_2023_usd_42019347593691658483-37497169570422045546309802-2379924.exe"C:\Users\Admin\AppData\Local\Temp\swift_09_feb_2023_usd_42019347593691658483-37497169570422045546309802-2379924.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- 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 cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAANAA3AA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\swift_09_feb_2023_usd_42019347593691658483-37497169570422045546309802-2379924.exeC:\Users\Admin\AppData\Local\Temp\swift_09_feb_2023_usd_42019347593691658483-37497169570422045546309802-2379924.exe2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
408KB
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Filesize
120KB
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Filesize
104KB
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Filesize
6.5MB
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Filesize
216KB
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Filesize
408KB
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Filesize
6.2MB
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Filesize
192KB
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Filesize
40KB
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Filesize
320KB
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Filesize
32KB
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Filesize
5.6MB
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Filesize
136KB
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Filesize
584KB