General
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Target
SkermEXEC.exe
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Size
3.1MB
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MD5
d2684b91635d1e6367f3afcc5f69704f
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SHA1
e11f64b35a4d006abcf3218c2b16350fa1811d37
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SHA256
148ba895996273e5b245a9764c65b18187186084105a3d037e12a48940d78684
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SHA512
06a7d6154c51c7a2f5dcdb6473a5c0122c568b852613e38e7359bd345cbb7f0ac511fb13c8d54c01ca309866208aa0e1ec4a738953050b52d34903feb7dc59d7
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SSDEEP
49152:KvWI22SsaNYfdPBldt698dBcjHV5Ro6nbR3LoGduTTHHB72eh2NT:Kv722SsaNYfdPBldt6+dBcjHV5Ro65
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