Analysis
- max time kernel
151s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
04/03/2024, 03:28
General
- Target b11b550fccddee0f9652cb34c12f91c0.exe
- Size 180KB
- Sample240304-d1nr5she37
- SHA256 fd58afa96d56df9d4bb20955601fc4b7e379b9964eccf31cb1904252f709dbc7
Malware Config
Extracted
-
smokeloader
-
0708
Extracted
-
smokeloader
-
2020
-
http://readinglistforjuly1.xyz/
-
http://readinglistforjuly2.xyz/
-
http://readinglistforjuly3.xyz/
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http://readinglistforjuly4.xyz/
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http://readinglistforjuly5.xyz/
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http://readinglistforjuly6.xyz/
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http://readinglistforjuly7.xyz/
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http://readinglistforjuly8.xyz/
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http://readinglistforjuly9.xyz/
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http://readinglistforjuly10.xyz/
-
http://readinglistforjuly1.site/
-
http://readinglistforjuly2.site/
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http://readinglistforjuly3.site/
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http://readinglistforjuly4.site/
-
http://readinglistforjuly5.site/
-
http://readinglistforjuly6.site/
-
http://readinglistforjuly7.site/
-
http://readinglistforjuly8.site/
-
http://readinglistforjuly9.site/
-
http://readinglistforjuly10.site/
Signatures
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Deletes itself 1 IoCs
- Executes dropped EXE 2 IoCs
- Suspicious use of SetThreadContext 2 IoCs
- Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: MapViewOfSection 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of UnmapMainImage 1 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\b11b550fccddee0f9652cb34c12f91c0.exe"C:\Users\Admin\AppData\Local\Temp\b11b550fccddee0f9652cb34c12f91c0.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\b11b550fccddee0f9652cb34c12f91c0.exe"C:\Users\Admin\AppData\Local\Temp\b11b550fccddee0f9652cb34c12f91c0.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
-
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4028 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:81⤵
-
C:\Users\Admin\AppData\Roaming\uwafgwrC:\Users\Admin\AppData\Roaming\uwafgwr1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\uwafgwrC:\Users\Admin\AppData\Roaming\uwafgwr2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
uwafgwr
memory/1352-3-0x0000000000400000-0x0000000000409000-memory.dmp
memory/1352-4-0x0000000000400000-0x0000000000409000-memory.dmp
memory/1352-6-0x0000000000400000-0x0000000000409000-memory.dmp
memory/2724-1-0x0000000002E20000-0x0000000002F20000-memory.dmp
memory/2724-2-0x0000000004A00000-0x0000000004A0A000-memory.dmp
memory/3356-5-0x00000000030D0000-0x00000000030E6000-memory.dmp
memory/3356-19-0x0000000002FD0000-0x0000000002FE6000-memory.dmp
memory/4060-16-0x0000000002FF0000-0x00000000030F0000-memory.dmp
memory/4468-20-0x0000000000400000-0x0000000000409000-memory.dmp