Behavioral task
behavioral1
Sample
Clientbuilt.exe
Resource
win7-20240903-en
General
-
Target
Clientbuilt.exe
-
Size
3.1MB
-
MD5
1bc41e78ed5826263d2a19ead5a4c745
-
SHA1
abd595914243e2e2f820aa79bb3b8291a238b212
-
SHA256
b9e61655a5231bc7226473309d0253bd670ca0aa01da8ed85fa755ec78ec137d
-
SHA512
2cb7077de8174fef7bc96bd609a64ee577af2c3cb52b1e53a5b489c4aa742f177fa0214ded4b192d9ea1b07155bd29b0604b6e677223495ee15fad99f1cf2b49
-
SSDEEP
49152:dvA6yZwSeR9AvRYgOHPv27OsAuTRTHHB72eh2NT:dv+wH9ApY9HPOq
Malware Config
Extracted
quasar
1.4.1
Office04
45.131.111.80:4343
acba47bc-0059-4de1-903e-ddf73d586598
-
encryption_key
A4A396F63CB98678D936806D746F527FED43A46F
-
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 Clientbuilt.exe
Files
-
Clientbuilt.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