Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240903-en
General
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Target
Client-built.exe
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Size
3.1MB
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MD5
e7b38e84926048dd156d4c246675823a
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SHA1
40ab7eaffb7b098e736ade0eee720856c3e38cd9
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SHA256
d49ea0eeb7f55bc51d0862c6a94cf0495f107122e6771d4dc4115fce5d9bfcb1
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SHA512
e74a37e088f36ad656b86907999c2178c7868803e964acc74cfe54fef6ae7e1f845ebad470655dd896c03d6679e9a7d5a07791bb2b796c6355bf989b57e3ba9f
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SSDEEP
49152:rvVG42pda6D+/PjlLOlg6yQipVhQg7vbR6LoGd8xTHHB72eh2NT:rvM42pda6D+/PjlLOlZyQipVh37K
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.208.1:7672
127.000.1:7672
192.168.208.1:37664
43703048-944d-4b25-8c70-d875b0b3b227
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encryption_key
62FBCC4DFDC2A6A90B45D09307BE1ECC156199ED
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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
Password: infected
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