General
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Target
SolaraB.rar
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Size
76KB
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MD5
6411b4a9a246eef97e589a9df2882f8a
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SHA1
1d90311acb334f288f4996df26b1800403a0948f
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SHA256
c8615f0c7412de9bab6307491a5084aed1faf308664bc4d21e8d83101afdeb0a
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SHA512
0199a12c1fdcdc0125e29d578e6111fb5cd3a51d5370c618fbeba138fe2c42e31418a611df7ead727f510b7da7a53e71f2c09c59850253d58ac07b5b658dcb4f
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SSDEEP
1536:Ki2l3ISJ6HumuVjcjvlUiKFyTh7hxcj/Z1jY8LkoGFuQ3n:Ql3pJjmeQ5URyd7n8/Z1xozFugn
Malware Config
Extracted
umbral
https://discord.com/api/webhooks/1258158330237423708/TP4vZ1k1Rh4BbYP62cogAVNmLUNicORrL9xsgCelKxJelwVrWSmY1bVmhh1Yvxap5YQ-
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule static1/unpack001/SolaraB/Solara/solarabootstrapper.exe family_umbral -
Umbral family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/SolaraB/Solara/solarabootstrapper.exe
Files
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SolaraB.rar.rar
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SolaraB/Solara/solarabootstrapper.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: 224KB - Virtual size: 224KB
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