General
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Target
TOOLSNXCLXN.rar
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Size
75KB
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MD5
778a012a322ef022737614cd88f1dd0d
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SHA1
fbb02cdbbb5c4ad16ed3fed11c7cb6138886935a
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SHA256
f94153cfeb4b7fa38c103aaf84d6d1deecb194291b974526a504ffbc2ce282b6
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SHA512
45a33e6b5cbea376883d4106707e8b51b7bf84bf2c7bbfb472383ac742f9a10f10041d3b7451fef8cabfdca9f0b25747097994d5285e12359f968ef69f46d7b4
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SSDEEP
1536:Ls/risPJt3idxIbbDoG3/bhY1GN10kxmRTes4rF7UH3t9zc1t:gpPfyd8+1GNqkxmRf4B7Ud9zs
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1234683527757430874/biedJYdyCmt_WYbiwNuuaBRfXrktJzoSlJ2mgMw1oEF8LquTN45hRsh87zlXKAnoRDFu
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule static1/unpack001/TOOLSNXCLXN.exe family_umbral -
Umbral family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/TOOLSNXCLXN.exe
Files
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TOOLSNXCLXN.rar.rar
Password: nxclxn
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TOOLSNXCLXN.exe.exe windows:4 windows x86 arch:x86
Password: nxclxn
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: 226KB - 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