Behavioral task
behavioral1
Sample
4ef1927705d28faf8456c200397d0af6.exe
Resource
win7-20231215-en
General
-
Target
4ef1927705d28faf8456c200397d0af6
-
Size
792KB
-
MD5
4ef1927705d28faf8456c200397d0af6
-
SHA1
b92ab805e7c2884abcf371179b0d8989c4f90025
-
SHA256
cd5a8de963a29d07bb003a8d03fa7ba38e5004641fe8138885c967db46bef0fc
-
SHA512
fe7f2405a8beb2bd70cfc689ce5ea3fc2cc4e03c72c925db698ea0e56b269b3e66c20f88afc382ea734e39b25cf66b0bcf24d72dab12d1b791ef91c690af17ac
-
SSDEEP
6144:K8fGABIgrx8kFYLTiMkbmM28mA04ykdBbDqIJluHLmRZXqavbvmGaGy3V8/GV0j1:LPx7FYPiMq2fkdZ9JamPaaDvreg7
Malware Config
Extracted
quasar
2.1.0.0
Office04
192.168.1.154:4782
VNM_MUTEX_ph9lkMeWS6xgznetvP
-
encryption_key
2ABr09PX2FCCobHek8sv
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Venom Client Startup
-
subdirectory
SubDir
Signatures
-
Contains code to disable Windows Defender 1 IoCs
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
Processes:
resource yara_rule sample disable_win_def -
Quasar family
-
Quasar payload 1 IoCs
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource 4ef1927705d28faf8456c200397d0af6
Files
-
4ef1927705d28faf8456c200397d0af6.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: 531KB - Virtual size: 531KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 259KB - Virtual size: 259KB
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