Resubmissions
05-09-2022 17:27
220905-v1mcrafch3 10Behavioral task
behavioral1
Sample
rvihbwsaua.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral2
Sample
rvihbwsaua10.scr
Resource
win10v2004-20220812-en
General
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Target
rvi.rar
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Size
166KB
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MD5
d3055a275cf792cfc748f2f876fa4e4d
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SHA1
ea09a4703f177099b4a968db52b1284d510748b0
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SHA256
ec4a7e9707833ce7f866c34334496e92e3f8140995781af1bc43d706b861622b
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SHA512
9f89b53401c394152477e3fe840d48491aed3c35b07ee6ea48536d6f3dca76e04c3fabbc04abde41571f8d0914d6536f9d951e0cf7cfdb6c176b61a4da90a866
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SSDEEP
3072:2gMkMJCjG1zWmlJF9DoPNmB7UYpYbcTKsqE1UEXKEttnZb2E0o:jMAGwmjDoPNmBqbcTwmnXTtF1fH
Malware Config
Signatures
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CrimsonRAT main payload 2 IoCs
Processes:
resource yara_rule static1/unpack001/rvihbwsaua.exe family_crimsonrat static1/unpack001/rvihbwsaua10.scr family_crimsonrat -
Crimsonrat family
Files
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rvi.rar.rar
Password: infected
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rvihbwsaua.exe.exe windows x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 9.6MB - Virtual size: 9.6MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 363KB - Virtual size: 363KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
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rvihbwsaua10.scr.exe windows x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 9.6MB - Virtual size: 9.6MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 363KB - Virtual size: 363KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ