Analysis
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max time kernel
150s -
max time network
137s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
10-04-2024 09:21
Behavioral task
behavioral1
Sample
0335de8eadbbd5dc7cbe92ef869bcea6f6596ac39a38680142c982ec6e97ecde.xlam
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
0335de8eadbbd5dc7cbe92ef869bcea6f6596ac39a38680142c982ec6e97ecde.xlam
Resource
win10v2004-20240226-en
General
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Target
0335de8eadbbd5dc7cbe92ef869bcea6f6596ac39a38680142c982ec6e97ecde.xlam
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Size
127KB
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MD5
e0f6bcdb71df502f7aefe22db8207a69
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SHA1
9f7357219cbfb5b940d5809f8564a6bb821fa036
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SHA256
0335de8eadbbd5dc7cbe92ef869bcea6f6596ac39a38680142c982ec6e97ecde
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SHA512
ea9fc5fe2bcd8a225c7f7f7b8ea832e3d143278a07c6264edaf9476fb5e7852efdd9b3dbcde6e211ccb1e6d011b11845def65af58e9298a01b3067a05200d7cc
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SSDEEP
3072:NDKcDiVBG5Q0fULY/fPiY4XXnfWFsnNfWSWe:NDDD0BGCY/fkXvTNf5
Malware Config
Signatures
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CrimsonRAT main payload 1 IoCs
Processes:
resource yara_rule C:\ProgramData\Hdlharas\dlrarhsiva.exe family_crimsonrat -
CrimsonRat
Crimson RAT is a malware linked to a Pakistani-linked threat actor.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
hbraeiwas.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation hbraeiwas.exe -
Executes dropped EXE 2 IoCs
Processes:
hbraeiwas.exedlrarhsiva.exepid process 4648 hbraeiwas.exe 2540 dlrarhsiva.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
EXCEL.EXEdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 4808 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 24 IoCs
Processes:
EXCEL.EXEpid process 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE 4808 EXCEL.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
EXCEL.EXEhbraeiwas.exedescription pid process target process PID 4808 wrote to memory of 4648 4808 EXCEL.EXE hbraeiwas.exe PID 4808 wrote to memory of 4648 4808 EXCEL.EXE hbraeiwas.exe PID 4648 wrote to memory of 2540 4648 hbraeiwas.exe dlrarhsiva.exe PID 4648 wrote to memory of 2540 4648 hbraeiwas.exe dlrarhsiva.exe
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\0335de8eadbbd5dc7cbe92ef869bcea6f6596ac39a38680142c982ec6e97ecde.xlam"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4808 -
C:\Users\Admin\Glhvadia\hbraeiwas.exeC:\Users\Admin\Glhvadia\hbraeiwas.exe2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4648 -
C:\ProgramData\Hdlharas\dlrarhsiva.exe"C:\ProgramData\Hdlharas\dlrarhsiva.exe"3⤵
- Executes dropped EXE
PID:2540
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
9.1MB
MD5b35ab8d47748801afa154144c2891dc4
SHA1c2c356c1a6abd7858d9a143da35c7fadff9f8edb
SHA25615c45d634c70f0604cfe30806320090c66a65d8f8a26303db3c9c15bf3cc950c
SHA512a89686b0e7bb0b7ab6281a69448cc050ce3fe6a5c56ec9f5f2869106b3e2560a84554463bb9bb277d7f6da5a90a9f07f8ab5369f793fbb21dab56d868ae1ed45
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Filesize
56KB
MD5f0992d9b27d773b120109a5d1adec3d0
SHA19b1764b9e7b24fd8f4763fd33376ad9278b0bf04
SHA2563a50f9963f2f20618c907bfe5134cf11a727d2a4808875b6cba9ecb5ce635c04
SHA512e5368ebe377ebce87d6aa242898ae8fc9f94db0987c6bca1f669375a418e11f5d99b5f406c91e82ef0cf42bc56efbced77a58b1921b8eecf49cb4ea3d348c235
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Filesize
83KB
MD54663018621abd6313f9edb03c0737517
SHA1a9dd4c0303b261344d469362bd80c4e366e79692
SHA256e2200fa8b8c4757039e3f78536d9442817331f530e4348e08f02af753e7ae024
SHA51264d44f463b2d855c17b495ec056998b6f522f5078743621322f1cb574acf2ead445b0fe0f853a420941dfae2c09f5965ea383e48af74479d9c6c5a14c44a8f55