Static task
static1
Behavioral task
behavioral1
Sample
NEBULA OSC/NebulaOSC.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
NEBULA OSC/NebulaOSC.exe
Resource
win10v2004-20230915-en
General
-
Target
NEBULA OSC.zip.zip
-
Size
7.7MB
-
MD5
5e57c8461d842009d885738c6e2bc1a7
-
SHA1
44a41f190aba97363c27f2336be20f2f988aa37e
-
SHA256
9abbca071714ee9efbf6e3beebb7427822c4359836b28204583af5e24f4b8046
-
SHA512
5f4f8f275437dc5bb988a4e31c6df8f7e10f8ea7424815a0e9a17fddb3a75dbde59daa15dadf2affecfed72ac7e268fc92e47b91143988b764c2f6cb3f2d3a49
-
SSDEEP
196608:iQ8aF65IRo0JhlWQ9B87uYv0Zw4EgRDzS9jGtY:ifaU5Ozlj++JTRDzS8tY
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack002/NEBULA OSC/NebulaOSC.exe
Files
-
NEBULA OSC.zip.zip.zip
Password: infected
-
NEBULA OSC.zip.zip
-
NEBULA OSC/BG.mp3
-
NEBULA OSC/INT.mp3
-
NEBULA OSC/NebulaOSC.exe.exe windows:4 windows x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
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_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 1.5MB - Virtual size: 1.5MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 9KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ