Behavioral task
behavioral1
Sample
Build-Client.exe
Resource
win7-20240903-en
General
-
Target
Build-Client.exe
-
Size
3.1MB
-
MD5
c34d921ff3487c05cfff4991df196535
-
SHA1
c9c7ae70b2020a3f80996a1399b6eb160cfbf72c
-
SHA256
2bcc519da18324c5cfde4f0e7a2e6fa3d7e8b2c3c020ced81f07460f77476ed3
-
SHA512
35f51730586e8107a87aadf9bb902282285aabb2ef9ebd0e119d76e56a80f7608eb6bc799392a7c99cfd1e83e9d9626780b9b0bbc170888a4de43fd1cb360f88
-
SSDEEP
49152:SvzlL26AaNeWgPhlmVqvMQ7XSK9gRJ6/bR3LoGd3kTHHB72eh2NT:SvpL26AaNeWgPhlmVqkQ7XSK9gRJ6R
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.0.113:4782
c82ea6b0-d255-45fb-b0eb-547ab14c0e9e
-
encryption_key
045BFCAC42C40445C0D8EBEF569DD1BF4BB62A56
-
install_name
Build-client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
-
Quasar family
-
Quasar payload 1 IoCs
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource Build-Client.exe
Files
-
Build-Client.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