General
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Target
toolspub2.exe
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Size
255KB
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Sample
240116-br5cesbdc5
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MD5
981b36d1cfeefa91f3ef5332922cdd8d
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SHA1
b8a6b27e011a503755c6df2501039edb82b092aa
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SHA256
461f0f86f52bfa5fbed84023d0a9c8652bcbca34fea76ad0cb5bb8c503b65c9a
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SHA512
e0932850586027a24b8d8d7a3fbbaf4fc466a89cc4382ca1fb31847b5c201df3855f31e7208c577cc7907e5af0792abff0092941774cf3b4a27256440ba0d7c2
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SSDEEP
3072:2lrJL/wx7/zm4XobcY66bIjWMHGZ4jnz2fbqbzx5h+4Wy601:23L/wxf9Y6mIjN/nmI+4W1
Static task
static1
Behavioral task
behavioral1
Sample
toolspub2.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
toolspub2.exe
Resource
win10v2004-20231222-en
Malware Config
Extracted
smokeloader
up3
Extracted
smokeloader
2020
http://host-file-host6.com/
http://host-host-file8.com/
Targets
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Target
toolspub2.exe
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Size
255KB
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MD5
981b36d1cfeefa91f3ef5332922cdd8d
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SHA1
b8a6b27e011a503755c6df2501039edb82b092aa
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SHA256
461f0f86f52bfa5fbed84023d0a9c8652bcbca34fea76ad0cb5bb8c503b65c9a
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SHA512
e0932850586027a24b8d8d7a3fbbaf4fc466a89cc4382ca1fb31847b5c201df3855f31e7208c577cc7907e5af0792abff0092941774cf3b4a27256440ba0d7c2
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SSDEEP
3072:2lrJL/wx7/zm4XobcY66bIjWMHGZ4jnz2fbqbzx5h+4Wy601:23L/wxf9Y6mIjN/nmI+4W1
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Modifies firewall policy service
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Modifies security service
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Disables taskbar notifications via registry modification
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Disables use of System Restore points
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Sets file execution options in registry
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Sets service image path in registry
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Deletes itself
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Executes dropped EXE
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Loads dropped DLL
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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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Drops desktop.ini file(s)
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Suspicious use of NtSetInformationThreadHideFromDebugger
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
3Create or Modify System Process
2Windows Service
2Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
3Registry Run Keys / Startup Folder
3Create or Modify System Process
2Windows Service
2Scheduled Task/Job
1