Overview
overview
10Static
static
BHC-PR/BHC...an.exe
windows7_x64
10BHC-PR/BHC...an.exe
windows10_x64
10BHC-PR/Bri...on.exe
windows7_x64
10BHC-PR/Bri...on.exe
windows10_x64
10BHC-PR/Bri...20.exe
windows7_x64
10BHC-PR/Bri...20.exe
windows10_x64
10BHC-PR/Bri...ts.exe
windows7_x64
10BHC-PR/Bri...ts.exe
windows10_x64
10BHC-PR/Bri...ls.exe
windows7_x64
10BHC-PR/Bri...ls.exe
windows10_x64
10BHC-PR/Bri...20.exe
windows7_x64
10BHC-PR/Bri...20.exe
windows10_x64
10Analysis
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max time kernel
161s -
max time network
172s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
21-01-2022 23:00
Static task
static1
Behavioral task
behavioral1
Sample
BHC-PR/BHC PR - British Airways Restarts Flights to Pakistan.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
BHC-PR/BHC PR - British Airways Restarts Flights to Pakistan.exe
Resource
win10-en-20211208
Behavioral task
behavioral3
Sample
BHC-PR/British High Commission Peter Emmerson.exe
Resource
win7-en-20211208
Behavioral task
behavioral4
Sample
BHC-PR/British High Commission Peter Emmerson.exe
Resource
win10-en-20211208
Behavioral task
behavioral5
Sample
BHC-PR/British High Commission Press Release - GREAT Debate Islamabad 2020.exe
Resource
win7-en-20211208
Behavioral task
behavioral6
Sample
BHC-PR/British High Commission Press Release - GREAT Debate Islamabad 2020.exe
Resource
win10-en-20211208
Behavioral task
behavioral7
Sample
BHC-PR/British High Commission Rhinnon Mills receipts.exe
Resource
win7-en-20211208
Behavioral task
behavioral8
Sample
BHC-PR/British High Commission Rhinnon Mills receipts.exe
Resource
win10-en-20211208
Behavioral task
behavioral9
Sample
BHC-PR/British High Commission Rhinnon Mills.exe
Resource
win7-en-20211208
Behavioral task
behavioral10
Sample
BHC-PR/British High Commission Rhinnon Mills.exe
Resource
win10-en-20211208
Behavioral task
behavioral11
Sample
BHC-PR/British High Commission Urdu Press Release - GREAT Debate Islamabad 2020.exe
Resource
win7-en-20211208
Behavioral task
behavioral12
Sample
BHC-PR/British High Commission Urdu Press Release - GREAT Debate Islamabad 2020.exe
Resource
win10-en-20211208
General
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Target
BHC-PR/BHC PR - British Airways Restarts Flights to Pakistan.exe
-
Size
265KB
-
MD5
aa2081abe728ee1cc658dd0362bc464f
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SHA1
811cc8f3095fee20a1c6f5041c243fbf39ae8fcf
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SHA256
a22f6dc3eb0001c2be76d261721a1c1f419e15f6b5bfff95c5b8a5f633ce1956
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SHA512
621883b9cc461656f9f70e3f4dcd26f5827a007cc194d535bba414f5f8b406ee0f2edd6269617a2a947dfb60ea2c0176e840798802c6c8fb9ffb9a55c511f5f1
Malware Config
Signatures
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CrimsonRAT Main Payload 2 IoCs
Processes:
resource yara_rule C:\ProgramData\Hanthavra\rnthiavesa.exe family_crimsonrat C:\ProgramData\Hanthavra\rnthiavesa.exe family_crimsonrat -
CrimsonRat
Crimson RAT is a malware linked to a Pakistani-linked threat actor.
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Executes dropped EXE 1 IoCs
Processes:
rnthiavesa.exepid process 2704 rnthiavesa.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
WINWORD.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WINWORD.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
WINWORD.EXEdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WINWORD.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily WINWORD.EXE -
Modifies registry class 1 IoCs
Processes:
BHC PR - British Airways Restarts Flights to Pakistan.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000_Classes\Local Settings BHC PR - British Airways Restarts Flights to Pakistan.exe -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
Processes:
WINWORD.EXEpid process 1656 WINWORD.EXE 1656 WINWORD.EXE -
Suspicious use of SetWindowsHookEx 4 IoCs
Processes:
WINWORD.EXEpid process 1656 WINWORD.EXE 1656 WINWORD.EXE 1656 WINWORD.EXE 1656 WINWORD.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
BHC PR - British Airways Restarts Flights to Pakistan.exedescription pid process target process PID 4048 wrote to memory of 1656 4048 BHC PR - British Airways Restarts Flights to Pakistan.exe WINWORD.EXE PID 4048 wrote to memory of 1656 4048 BHC PR - British Airways Restarts Flights to Pakistan.exe WINWORD.EXE PID 4048 wrote to memory of 2704 4048 BHC PR - British Airways Restarts Flights to Pakistan.exe rnthiavesa.exe PID 4048 wrote to memory of 2704 4048 BHC PR - British Airways Restarts Flights to Pakistan.exe rnthiavesa.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\BHC-PR\BHC PR - British Airways Restarts Flights to Pakistan.exe"C:\Users\Admin\AppData\Local\Temp\BHC-PR\BHC PR - British Airways Restarts Flights to Pakistan.exe"1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4048 -
C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\Documents\BHC PR - British Airways Restarts Flights to Pakistan-03-.docx" /o ""2⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1656 -
C:\ProgramData\Hanthavra\rnthiavesa.exe"C:\ProgramData\Hanthavra\rnthiavesa.exe"2⤵
- Executes dropped EXE
PID:2704
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
93e588df26c62a47d3564e58ec988368
SHA1fcd11555531f636245d4c03f151dceb62ba72f6e
SHA2566cecd33e717c607ce578942e35c020d7571a7db67ce9270f9dcff30018a666cc
SHA5120f1f527eed767036dd6323fb5bfbf3e83fc7c2ef842c6d297742d536f8b1ae5b0b54a8ef83fe26f42916656feb0752badb6a39e63067a7dc6fe3e0797738a8ef
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MD5
93e588df26c62a47d3564e58ec988368
SHA1fcd11555531f636245d4c03f151dceb62ba72f6e
SHA2566cecd33e717c607ce578942e35c020d7571a7db67ce9270f9dcff30018a666cc
SHA5120f1f527eed767036dd6323fb5bfbf3e83fc7c2ef842c6d297742d536f8b1ae5b0b54a8ef83fe26f42916656feb0752badb6a39e63067a7dc6fe3e0797738a8ef
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MD5
19eeb247e5e81e212fa64aa19c142014
SHA11a8ce7d52d5e866bda957f659e29cea50a2ae849
SHA2563220fb8cee40d09ac6769e6ebb8f86b8ed54ff10eebf5ba01ab08d8431d98c80
SHA5128da9bd1fb3493bc4d624188b82772d643132eb35741cf39e7edf561f0e8984e8510f868658f2e1e27a3fa9195f6cd80a19934bc3fcdd6d5a6df5535e7987b425