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
-
max time kernel
154s -
max time network
164s -
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/British High Commission Urdu Press Release - GREAT Debate Islamabad 2020.exe
-
Size
269KB
-
MD5
336848d6de6faa8e8d737570046b0321
-
SHA1
84c33015a30fcfe38faa294820782c1f2f68da06
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SHA256
e7dbf1eacfbd73576b0e410099898e4c7e2d51d76fe3095314dee1b54860bf4f
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SHA512
85196ede8187b9f8711547fc1fc5f497edd8c9083d29b23ce2d2ac18a83fdc81cde2a38e9fb98de89e927cc016c04db9457dff14255679b5ed047a18d7334cfe
Malware Config
Signatures
-
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 3888 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 opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WINWORD.EXE -
Modifies registry class 1 IoCs
Processes:
British High Commission Urdu Press Release - GREAT Debate Islamabad 2020.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000_Classes\Local Settings British High Commission Urdu Press Release - GREAT Debate Islamabad 2020.exe -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
Processes:
WINWORD.EXEpid process 2972 WINWORD.EXE 2972 WINWORD.EXE -
Suspicious use of SetWindowsHookEx 8 IoCs
Processes:
WINWORD.EXEpid process 2972 WINWORD.EXE 2972 WINWORD.EXE 2972 WINWORD.EXE 2972 WINWORD.EXE 2972 WINWORD.EXE 2972 WINWORD.EXE 2972 WINWORD.EXE 2972 WINWORD.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
British High Commission Urdu Press Release - GREAT Debate Islamabad 2020.exedescription pid process target process PID 2268 wrote to memory of 2972 2268 British High Commission Urdu Press Release - GREAT Debate Islamabad 2020.exe WINWORD.EXE PID 2268 wrote to memory of 2972 2268 British High Commission Urdu Press Release - GREAT Debate Islamabad 2020.exe WINWORD.EXE PID 2268 wrote to memory of 3888 2268 British High Commission Urdu Press Release - GREAT Debate Islamabad 2020.exe rnthiavesa.exe PID 2268 wrote to memory of 3888 2268 British High Commission Urdu Press Release - GREAT Debate Islamabad 2020.exe rnthiavesa.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\BHC-PR\British High Commission Urdu Press Release - GREAT Debate Islamabad 2020.exe"C:\Users\Admin\AppData\Local\Temp\BHC-PR\British High Commission Urdu Press Release - GREAT Debate Islamabad 2020.exe"1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2268 -
C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\Documents\British High Commission Urdu Press Release - GREAT Debate Islamabad 2020-03-.docx" /o ""2⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2972 -
C:\ProgramData\Hanthavra\rnthiavesa.exe"C:\ProgramData\Hanthavra\rnthiavesa.exe"2⤵
- Executes dropped EXE
PID:3888
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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C:\Users\Admin\Documents\British High Commission Urdu Press Release - GREAT Debate Islamabad 2020-03-.docx
MD5498aba93d84770619caa1029cde79bf7
SHA163c5f8f5ac49040d8a2d19e41a0c499076881112
SHA256994dddf45424b2ec72cf186de56f9190a643718bc5c3006465b1bd958a6eb5e8
SHA5121de8c8e20cc4a88da9441339454a9370d4453853dc3969a02ec8f2477596419ebe2e06ba6b39dacb05eeb85b0ed19e4e93473af31b4bd97adf2bbd53f4c823e7