Behavioral task
behavioral1
Sample
Server.exe
Resource
win7-20240220-es
Behavioral task
behavioral2
Sample
Server.exe
Resource
win10-20240221-es
General
-
Target
Server.exe
-
Size
3.1MB
-
MD5
52c16b5163e4b911a152ae9b57b5f28a
-
SHA1
47fedc92ea2c7c0273173a7c149785f3e22668d4
-
SHA256
9370c4040f9d0d8ef04b8a6182f8e6ba968dd3718a4e49a5fbb45b7695c5fba5
-
SHA512
8b06ea9b576a18773f4852bc8340ea736020650a1608b617a0ddf3dea987e4830871044ecbd167764f0b2a3efaed0cf3f8bc1d1b6b1cde32e413ac2c2b1f2fbf
-
SSDEEP
49152:Wvkt62XlaSFNWPjljiFa2RoUYIt4mKmz3LoGdo6KXTHHB72eh2NT:Wv462XlaSFNWPjljiFXRoUYIt4mbY
Malware Config
Extracted
quasar
1.4.1
Office04
192.168.0.106:4782
a3c55058-34d6-4f60-8f08-dfaec88ee937
-
encryption_key
C4F266F5844303A350FCE489DCF9CF44A85DA330
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Windows
-
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 Server.exe
Files
-
Server.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