General
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Target
SkermEXEC.exe
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Size
3.1MB
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MD5
9f267d872494cb059bdeb6b2c30d612f
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SHA1
2a67dda167cd4872717fbdaa868bf7f3c7b4333f
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SHA256
a96753e9b56838926ac13f3cae923fd23f6748403c213de36ec768b6a234bdbd
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SHA512
833a1211990f9aece09606316903dfc7d10297d7d2521fb3d049d2c0d92ef7f3de3e0f360f8582810d169caf082e1f7c950ec89d96be1a46133c3975cfcbb136
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SSDEEP
49152:CvbI22SsaNYfdPBldt698dBcjHB2OmZmznEoGdsTHHB72eh2NT:Cvk22SsaNYfdPBldt6+dBcjHgOm5
Malware Config
Extracted
quasar
1.4.1
Office04
104.28.197.26:4782
f195a5f9-5b8a-4ef1-ba41-ce79c45d3dad
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encryption_key
AAD5CB2ED96AC29ECF5D4BB5B9A38449017E4CAA
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install_name
SkermEXEC.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Quasar Client Startup
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subdirectory
SubDir
Signatures
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Quasar family
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Quasar payload 1 IoCs
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource SkermEXEC.exe
Files
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SkermEXEC.exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
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: 3.1MB - Virtual size: 3.1MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 3KB - Virtual size: 2KB
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