Behavioral task
behavioral1
Sample
Client.exe
Resource
win7-20231215-en
General
-
Target
Client.exe
-
Size
3.1MB
-
MD5
78ea715e9655b573e0e61085b05c0d35
-
SHA1
b82aed32b81ba1d5d9699670c6b4c77382fbaeb1
-
SHA256
dcb852bbdd6ebe2221c3e5126c3d0ad98c626f1cdc425fc1b68dbf59eb798a45
-
SHA512
e51fb7ece71018644a4b0b166e2520c4b98837799da67c04443430458527615a264817bcb0bdd673b58bcce04ff4ce798c37a354ed7b1acb58b066cfae4a3559
-
SSDEEP
49152:Cvtt62XlaSFNWPjljiFa2RoUYIOjRJ6KbR3LoGdzaTHHB72eh2NT:CvP62XlaSFNWPjljiFXRoUYIOjRJ6k
Malware Config
Extracted
quasar
1.4.1
Office04
127.0.0.1:4782
fd00eaa6-29fb-47f7-94b6-d10c7e29f552
-
encryption_key
5F396B3E54B2C9046A48C7B5FCBD7BA9D3AC62A9
-
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.exe
Files
-
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