Analysis
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max time kernel
145s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
29-11-2024 21:51
Behavioral task
behavioral1
Sample
2628ad9be62db33bcc2dd982d80a7ec4ff840349a658795e13ef9611b784eefe.xls
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
2628ad9be62db33bcc2dd982d80a7ec4ff840349a658795e13ef9611b784eefe.xls
Resource
win10v2004-20241007-en
General
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Target
2628ad9be62db33bcc2dd982d80a7ec4ff840349a658795e13ef9611b784eefe.xls
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Size
423KB
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MD5
fa6a95df0af45ff6601696678af711b6
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SHA1
c87653f543d7c9386b92732e02ee64deac0e0100
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SHA256
2628ad9be62db33bcc2dd982d80a7ec4ff840349a658795e13ef9611b784eefe
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SHA512
362d3bd45dcf7b419661a4a77545d337d7f294a143f732e18dd7f728f04e99772bb45e205513c4c03f6975778ba2d812cc6e288ff5e6591ca04ad2a639d3fc02
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SSDEEP
6144:ixEtjPOtioVjDGUU1qfDlavx+W2QnASFR:TF
Malware Config
Extracted
crimsonrat
167.114.138.12
Signatures
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CrimsonRAT main payload 1 IoCs
resource yara_rule behavioral1/files/0x000500000001937b-40.dat family_crimsonrat -
CrimsonRat
Crimson RAT is a malware linked to a Pakistani-linked threat actor.
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Crimsonrat family
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Executes dropped EXE 1 IoCs
pid Process 2556 rlbwrarhsa.exe -
Loads dropped DLL 1 IoCs
pid Process 1620 EXCEL.EXE -
Drops file in Program Files directory 2 IoCs
description ioc Process File created C:\PROGRA~3\Tdlawis\rlbwrarhsa.exe EXCEL.EXE File opened for modification C:\PROGRA~3\Tdlawis\rlbwrarhsa.exe EXCEL.EXE -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language EXCEL.EXE -
Office loads VBA resources, possible macro or embedded object present
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Enumerates system info in registry 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE -
Modifies registry class 64 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{8BD21D42-EC42-11CE-9E0D-00AA006002F3} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{8A683C90-BA84-11CF-8110-00A0C9030074}\ = "IReturnSingle" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{5B9D8FC8-4A71-101B-97A6-00000B65C08B} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{5512D111-5CC6-11CF-8D67-00AA00BDCE1D}\ = "IWHTMLSubmitButton" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{8BD21D63-EC42-11CE-9E0D-00AA006002F3}\ = "IMdcToggleButton" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{5512D117-5CC6-11CF-8D67-00AA00BDCE1D} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{5512D125-5CC6-11CF-8D67-00AA00BDCE1D} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{944ACF93-A1E6-11CE-8104-00AA00611080}\ = "Tabs" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{5512D113-5CC6-11CF-8D67-00AA00BDCE1D}\ = "IWHTMLImage" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{8BD21D12-EC42-11CE-9E0D-00AA006002F3} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\TypeLib EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{82B02371-B5BC-11CF-810F-00A0C9030074}\ = "IReturnBoolean" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{944ACF93-A1E6-11CE-8104-00AA00611080}\ = "Tabs" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{5512D11F-5CC6-11CF-8D67-00AA00BDCE1D}\ = "IWHTMLPassword" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{7B020EC8-AF6C-11CE-9F46-00AA00574A4F} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{47FF8FE0-6198-11CF-8CE8-00AA006CB389}\ = "WHTMLControlEvents1" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{8BD21D13-EC42-11CE-9E0D-00AA006002F3} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{04598FC6-866C-11CF-AB7C-00AA00C08FCF} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{04598FC8-866C-11CF-AB7C-00AA00C08FCF}\ = "_UserForm" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{47FF8FE9-6198-11CF-8CE8-00AA006CB389}\ = "WHTMLControlEvents10" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\TypeLib\{B24EB9AB-1E26-4782-8453-861C695F9C3B}\2.0\ = "Microsoft Forms 2.0 Object Library" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{8BD21D12-EC42-11CE-9E0D-00AA006002F3}\ = "MdcTextEvents" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{4C5992A5-6926-101B-9992-00000B65C6F9} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{04598FC3-866C-11CF-AB7C-00AA00C08FCF}\ = "IScrollbar" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{47FF8FE2-6198-11CF-8CE8-00AA006CB389} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{29B86A70-F52E-11CE-9BCE-00AA00608E01}\ = "IOptionFrame" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{8BD21D23-EC42-11CE-9E0D-00AA006002F3} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{8BD21D43-EC42-11CE-9E0D-00AA006002F3}\ = "IMdcCheckBox" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{5512D11F-5CC6-11CF-8D67-00AA00BDCE1D} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{47FF8FE2-6198-11CF-8CE8-00AA006CB389}\ = "WHTMLControlEvents3" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{47FF8FE6-6198-11CF-8CE8-00AA006CB389}\ = "WHTMLControlEvents7" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{9A4BBF53-4E46-101B-8BBD-00AA003E3B29} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{9A4BBF53-4E46-101B-8BBD-00AA003E3B29}\ = "ControlEvents" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{8BD21D13-EC42-11CE-9E0D-00AA006002F3} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{8BD21D52-EC42-11CE-9E0D-00AA006002F3} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{92E11A03-7358-11CE-80CB-00AA00611080}\ = "Pages" EXCEL.EXE Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{B24EB9AB-1E26-4782-8453-861C695F9C3B}\2.0\0 EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{04598FC4-866C-11CF-AB7C-00AA00C08FCF}\ = "ICommandButton" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{7B020EC1-AF6C-11CE-9F46-00AA00574A4F}\ = "CommandButtonEvents" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{8A683C91-BA84-11CF-8110-00A0C9030074}\ = "IReturnEffect" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{5512D117-5CC6-11CF-8D67-00AA00BDCE1D} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{8BD21D32-EC42-11CE-9E0D-00AA006002F3} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{47FF8FE4-6198-11CF-8CE8-00AA006CB389} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{47FF8FE9-6198-11CF-8CE8-00AA006CB389} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{5CEF5613-713D-11CE-80C9-00AA00611080}\ = "IPage" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{29B86A70-F52E-11CE-9BCE-00AA00608E01}\ = "IOptionFrame" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{944ACF93-A1E6-11CE-8104-00AA00611080} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{5512D111-5CC6-11CF-8D67-00AA00BDCE1D} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{92E11A03-7358-11CE-80CB-00AA00611080}\ = "Pages" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{8BD21D42-EC42-11CE-9E0D-00AA006002F3}\ = "MdcCheckBoxEvents" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{8BD21D52-EC42-11CE-9E0D-00AA006002F3} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{5CEF5613-713D-11CE-80C9-00AA00611080}\ = "IPage" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{5512D119-5CC6-11CF-8D67-00AA00BDCE1D}\ = "IWHTMLOption" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{4C5992A5-6926-101B-9992-00000B65C6F9}\ = "ImageEvents" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{82B02370-B5BC-11CF-810F-00A0C9030074} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Interface\{82B02371-B5BC-11CF-810F-00A0C9030074} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{9A4BBF53-4E46-101B-8BBD-00AA003E3B29}\ = "ControlEvents" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{5512D117-5CC6-11CF-8D67-00AA00BDCE1D}\ = "IWHTMLCheckbox" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{5512D11D-5CC6-11CF-8D67-00AA00BDCE1D}\ = "IWHTMLHidden" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{5512D11F-5CC6-11CF-8D67-00AA00BDCE1D}\ = "IWHTMLPassword" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{BEF6E003-A874-101A-8BBA-00AA00300CAB} EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{8A683C90-BA84-11CF-8110-00A0C9030074} EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Wow6432Node\Interface\{04598FC2-866C-11CF-AB7C-00AA00C08FCF}\ = "ITabStrip" EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1620 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 1620 EXCEL.EXE 1620 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 1620 EXCEL.EXE 1620 EXCEL.EXE 1620 EXCEL.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1620 wrote to memory of 2556 1620 EXCEL.EXE 30 PID 1620 wrote to memory of 2556 1620 EXCEL.EXE 30 PID 1620 wrote to memory of 2556 1620 EXCEL.EXE 30 PID 1620 wrote to memory of 2556 1620 EXCEL.EXE 30
Processes
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C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\2628ad9be62db33bcc2dd982d80a7ec4ff840349a658795e13ef9611b784eefe.xls1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1620 -
C:\ProgramData\Tdlawis\rlbwrarhsa.exeC:\ProgramData\Tdlawis\rlbwrarhsa.exe2⤵
- Executes dropped EXE
PID:2556
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
56KB
MD5aac869f05f219ae6508ad279a97120d1
SHA11de68ade3b8f45a2b7b846b35768e6301b5e2e0d
SHA2560b655acf2e3c1c72746c4a69f56f4c5149b27cfea9d10fe2dbffd411b8b4fd8d
SHA51251199423ed586ae4a2990df54a0231d9ea0d067e0f9badb3139b9a3a61f2d8044a02e1f8d27fcc4d7f59118d84326a1cc74f68c76e95b71a8ce7c1953451c05f
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Filesize
9.6MB
MD58a1f4a512fe9edbcc62ba4b1c3e08f0a
SHA1fcc99860e1029e0d989121be46eb1da2f8402853
SHA256ecd7d7a27a2a043919a233bb91e3b009c05b7c81ff132a7c29228e1c45d2b6a6
SHA5120e78fa869f051b5672b6f7a4dcc02ae7cdca55ba8ac2b14a34f30e94844fddb7caa22ac9fd555ac0bb270c1bfbedcb3e7ef074fcf9cba8dbf2ba0d5dc690444c