General
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Target
7zip-64-19.0.0.0.0-installer_bR-fcS1.exe
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Size
1.7MB
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Sample
241031-pzblzaxjbv
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MD5
a06d58ffbdf021a5c261659cb163a5a3
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SHA1
f963fdb4133ec276889cfabaed0135dba276f84a
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SHA256
628065ea1095a53fb97689cbdef0b41ceb76cc4e898a1fb981ef4ca64303636c
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SHA512
db9b1924e829d4e3f6547cb63718f30bdfb9267a42e460da22b25a43258028c085dd85e32ac12afc268bb46c3240d070d8d300a22dd8780d8cd03ddd9f2df48c
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SSDEEP
49152:1BuZrEUrJovPJK9VMX1S7TlYQhzjvWjzs:TkLGk9CX1S7Xpj+jg
Static task
static1
Behavioral task
behavioral1
Sample
7zip-64-19.0.0.0.0-installer_bR-fcS1.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral2
Sample
7zip-64-19.0.0.0.0-installer_bR-fcS1.exe
Resource
win7-20240903-en
Malware Config
Targets
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Target
7zip-64-19.0.0.0.0-installer_bR-fcS1.exe
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Size
1.7MB
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MD5
a06d58ffbdf021a5c261659cb163a5a3
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SHA1
f963fdb4133ec276889cfabaed0135dba276f84a
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SHA256
628065ea1095a53fb97689cbdef0b41ceb76cc4e898a1fb981ef4ca64303636c
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SHA512
db9b1924e829d4e3f6547cb63718f30bdfb9267a42e460da22b25a43258028c085dd85e32ac12afc268bb46c3240d070d8d300a22dd8780d8cd03ddd9f2df48c
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SSDEEP
49152:1BuZrEUrJovPJK9VMX1S7TlYQhzjvWjzs:TkLGk9CX1S7Xpj+jg
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Drops file in Drivers directory
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Manipulates Digital Signatures
Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to obtain their binary as valid.
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Sets service image path in registry
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Impair Defenses: Safe Mode Boot
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Adds Run key to start application
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Checks for any installed AV software in registry
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Downloads MZ/PE file
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops file in System32 directory
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Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Event Triggered Execution
1Component Object Model Hijacking
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Event Triggered Execution
1Component Object Model Hijacking
1Defense Evasion
Impair Defenses
1Safe Mode Boot
1Modify Registry
4Pre-OS Boot
1Bootkit
1Subvert Trust Controls
2Install Root Certificate
1SIP and Trust Provider Hijacking
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1