General
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Target
csrss-not-protected.exe
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Size
3.1MB
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MD5
9860f52d3bf9ce7cb1389c16c97318bf
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SHA1
839fa9d755a337e56ba2e6cca077f07c1a3ea55c
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SHA256
d6a339ccfc1b0af7b4461871c86f6a21f8228829d482a88fe3be000f558472fa
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SHA512
24856002c82547af2797dfe025f78d7d315cfbec8a405b04b7afc299aa6ec1e72058c7d09a408fd55b5331c13c1c4d6edbe1b6f0ef907985310cddf7a5bac3db
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SSDEEP
49152:evNt62XlaSFNWPjljiFa2RoUYIxRRJ6mbR3LoGd62THHB72eh2NT:evv62XlaSFNWPjljiFXRoUYIxRRJ6g
Malware Config
Extracted
quasar
1.4.1
user
bore.pub:3434
dea7d3ac-9cbe-4676-9d9b-fbb7abd72f66
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encryption_key
750E471A2736E4EC77FD37E3C73FCB548A7C773A
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install_name
csrss.exe
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log_directory
Logs
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reconnect_delay
10
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startup_key
Client Server Runtime Process
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subdirectory
F2D1CC.tmp
Signatures
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Quasar family
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Quasar payload 1 IoCs
resource yara_rule sample family_quasar
Files
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csrss-not-protected.exe.exe windows x86
Password: test444
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