Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win7-20240708-en
General
-
Target
Client-built.exe
-
Size
3.1MB
-
MD5
3c7795d8fefe0d42a3313ebb51a758df
-
SHA1
9b035f6f7382b7b3679587f6f3321453a11c2b96
-
SHA256
447529784d832ce5ae8cb18a8ff2ccb62927dc77f5fdd012c4d889b6e75178ac
-
SHA512
915db2a5e693d99a671dee0f16e3361452bb7fecb496d871c2382c08f245e1a43d8fe3f2c26b949595e9bcefa63b52f9b6aaaf3a9181ff6e8f804ee3eddd1e7f
-
SSDEEP
49152:uvnI22SsaNYfdPBldt698dBcjHjuQ6k2MuYk/GLoGd65THHB72eh2NT:uvI22SsaNYfdPBldt6+dBcjHyQ60q
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.0.112:4782
8878a190-04d1-47d5-8e2a-347d2e7ad6ef
-
encryption_key
E977E81CC751295D2543CD279B3FB4FA6DD002E1
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
-
Quasar family
-
Quasar payload 1 IoCs
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource Client-built.exe
Files
-
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