Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
11/05/2026, 19:52
General
- Target fb4e430b0e41d7bcf86b0c9a058712325faa43213b31d2bbb256f66b536ff953.exe
- Size 114KB
- Sample260511-yle7nshv4y
- SHA256 fb4e430b0e41d7bcf86b0c9a058712325faa43213b31d2bbb256f66b536ff953
Malware Config
Extracted
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asyncrat
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0.5.8
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Default
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vipbookssearch.radio.fm:80
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vipbookssearch.radio.fm:443
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vipbookssearch.radio.fm:8080
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vipbookssearch.radio.fm:7707
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vipbookssearch.radio.fm:8443
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www.vipbookssearch.radio.fm:80
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www.vipbookssearch.radio.fm:443
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www.vipbookssearch.radio.fm:8080
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www.vipbookssearch.radio.fm:7707
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www.vipbookssearch.radio.fm:8443
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app.vipbookssearch.radio.fm:80
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app.vipbookssearch.radio.fm:443
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app.vipbookssearch.radio.fm:8080
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app.vipbookssearch.radio.fm:7707
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app.vipbookssearch.radio.fm:8443
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e1B0swiEdkni
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delay
3
-
install
true
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install_file
ChromeFix.exe
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install_folder
%AppData%
Signatures
- Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Async RAT payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Delays execution with timeout.exe 1 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 23 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\fb4e430b0e41d7bcf86b0c9a058712325faa43213b31d2bbb256f66b536ff953.exe"C:\Users\Admin\AppData\Local\Temp\fb4e430b0e41d7bcf86b0c9a058712325faa43213b31d2bbb256f66b536ff953.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ChromeFix" /tr '"C:\Users\Admin\AppData\Roaming\ChromeFix.exe"' & exit2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "ChromeFix" /tr '"C:\Users\Admin\AppData\Roaming\ChromeFix.exe"'3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp171D.tmp.bat""2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\ChromeFix.exe"C:\Users\Admin\AppData\Roaming\ChromeFix.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
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-
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C:\Users\Admin\AppData\Roaming\ChromeFix.exe"C:\Users\Admin\AppData\Roaming\ChromeFix.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmp171D.tmp.bat
ChromeFix.exe
memory/1696-8-0x0000000005220000-0x0000000005239000-memory.dmp
memory/1696-0-0x0000000000890000-0x00000000008B2000-memory.dmp
memory/1696-7-0x00000000011D0000-0x000000000124B000-memory.dmp
memory/1696-2-0x0000000005350000-0x00000000053EC000-memory.dmp
memory/1696-1-0x00000000052A0000-0x00000000052B0000-memory.dmp
memory/3464-19-0x0000000000A10000-0x0000000000A1A000-memory.dmp
memory/3464-17-0x00000000007D0000-0x000000000084B000-memory.dmp
memory/3464-18-0x0000000004B00000-0x0000000004B19000-memory.dmp
memory/4312-16-0x0000000005760000-0x000000000576A000-memory.dmp
memory/4312-15-0x0000000005780000-0x0000000005799000-memory.dmp
memory/4312-14-0x00000000014A0000-0x000000000151B000-memory.dmp