General
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Target
Client-built.exe
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Size
3.1MB
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MD5
c10246a3d7708f3f62e843ece9d68fa4
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SHA1
81c15351ad25c46676a93b82eccf6a7abb9c4727
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SHA256
9a20abb95dd8ee12f24afcd2729e9f92493feca9d2fe75aaa9b1758c08a93f44
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SHA512
a960fed8a6780f598be60634bbcbf0967a7035c3a74ffb293610f10153afcfe92989c5253c75c0b164fd36cf00a83a6b2ff0be722bd6b9a9d8bff4a8a5e69323
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SSDEEP
49152:2vOI22SsaNYfdPBldt698dBcjHVPDPEQs/kC6nLoG7pTHHB72eh2NT:2vj22SsaNYfdPBldt6+dBcjHVPD9L
Malware Config
Extracted
quasar
1.4.1
Office04
147.185.221.24:26130
0c16ac3a-65ad-4a46-aa3d-7e603e8df11d
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encryption_key
8DF659EF1733572C92CB099CAABF5BB85EC5170A
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install_name
Client.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
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource Client-built.exe
Files
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Client-built.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