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Behavioral task
behavioral1
Sample
RobloxsClient.exe
Resource
win7-20240221-en
General
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Target
RobloxsClient.exe
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Size
229KB
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MD5
663e1b4816d16fad7d5790d8fc165642
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SHA1
e4f07dce25baeaf159ea532bec52182fb3c98476
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SHA256
43ac88fdf90508b4cae3f2607e028babe769e5b75549f8c68eac8c0610ec7d7e
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SHA512
5a29f10a7b9398e44d07007582d4bee8bd281d4d0db0503a96bae52b3ea5a0ec05044eb531040a5ba6ab296a6bafd09898324e6711f6818371d37eb25f16b530
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SSDEEP
6144:FloZM+rIkd8g+EtXHkv/iD4K2hFecjfUt1gevPeHOb8e1m+Ni:HoZtL+EP8K2hFecjfUt1gevPeSfE
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1239135413575221298/jXKb9LKLczkBzZThYFlqPoTvK3iEpKbkdm-8_m0PbAaQfY8BZT7Ene5EC0IP6v3qnc84
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 RobloxsClient.exe
Files
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RobloxsClient.exe.exe windows:4 windows x86 arch: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: 227KB - Virtual size: 226KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 1KB - Virtual size: 1KB
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