General
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Target
sigmasONLY.exe
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Size
3.1MB
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MD5
d24f638c48fa006d893594e969bc9ebb
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SHA1
c2300d048235309feddbb4be494ef9842511b4b2
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SHA256
18ea60cdacb1b050fa03cb12ebf3474f9f452904a9b0ac3a2a49144dc8c9eb88
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SHA512
0b23d19263722df4d107059065b80b996042d0f35f3e4923ba8fb923ee6928fd7c22bc0badc844a98dcb9231a6e1e458e69dc4fe700e588aec7ba1db7b32abc2
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SSDEEP
49152:SvaI22SsaNYfdPBldt698dBcjHqmDJERHNk/OgdoGd9jTHHB72eh2NT:SvX22SsaNYfdPBldt6+dBcjHqmDYS
Malware Config
Extracted
quasar
1.4.1
Slave
140.238.91.110:36305
f4720af1-0ef3-414f-b170-e837e2727049
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encryption_key
52EF528D690A6F47ED9D8BD4A80E69CBE28EDC0A
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install_name
WOS64.exe
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log_directory
Windows Error Logs
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reconnect_delay
3000
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startup_key
svchost
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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 sigmasONLY.exe
Files
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sigmasONLY.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