Behavioral task
behavioral1
Sample
rbxfpsunlocker.exe
Resource
win7-20230831-en
General
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Target
rbxfpsunlocker.exe
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Size
235KB
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MD5
cef4e684fe752c81d8a1373e622719e0
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SHA1
ed204610451f108b441d3b7b06b3dc95aeda80e4
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SHA256
24d2bc2920f563e67a63e82a6ad93c61e2a1e118e927385f71f55755ce8763cc
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SHA512
d07e6f763e0f970ac63e8dd7a3fe2b6bd6f38d91f0ebfadba8d6bd650b27c03cd68893d4de800078eafb75b6f24ac004976500585a8b7266ed64680827020f38
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SSDEEP
6144:TloZM+rIkd8g+EtXHkv/iD4dcFMrRiK1iwBzOurmaqb8e1mgui:RoZtL+EP8dcFMrRiK1iwBzOuroND
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1157699517823586424/nCBak1XsP92WYK7yrhYAQqw-TQ0zyYCpd3Tqbb2IRbAcz_FHoGW9R_4fs0oJVvD_XEKG
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule sample family_umbral -
Umbral family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource rbxfpsunlocker.exe
Files
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rbxfpsunlocker.exe.exe windows:4 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_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 228KB - Virtual size: 228KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 6KB - Virtual size: 5KB
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