Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20241010-en
General
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Target
Client-built.exe
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Size
348KB
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MD5
beb1de229b374cd778107c8268e191ac
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SHA1
fb5dcf278195472e206fa484f7005aa485c308ae
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SHA256
604b99f997d7de70804667e6e985627485d1a4d1eb694f3c36a34f0a01aef7bd
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SHA512
62bbd4c5688438fb5b9d3610cc2fe2be654f4373a28fc116d6118d20b00c82060ac77d33c11758ef20b84a06a3eaced8a6eb9fe792a3a21207f1b37bb18caff0
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SSDEEP
6144:IzNHXf500MoXP4PcNINSzpbDGrnxD6JAwV5IO:6d50OCcxzAjR6qwV5IO
Malware Config
Extracted
quasar
1.3.0.0
Office04
20.107.53.25:25535
QSR_MUTEX_zQ0poF2lHhCSZKSUZ3
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encryption_key
E2xbpJ93MnABcIqioTDL
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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: 344KB - Virtual size: 344KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - 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