Behavioral task
behavioral1
Sample
YellowSkull 1.0.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
YellowSkull 1.0.exe
Resource
win10v2004-20240802-en
General
-
Target
YellowSkull 1.0.exe
-
Size
2.5MB
-
MD5
640abbb20f86d9bc4d773ad756d4e315
-
SHA1
fbe59bd045e19195c8d4f0549e4fc835931d1e3e
-
SHA256
5bf5efd3b3f09473890c2248e82047dc18807f7b0318deb17107eee4ab4fb570
-
SHA512
72b80902e1df9e026c27ee728397cf2b440ea080e6b8380c80d6722850466dbbf8ee9b7f225a062cfcaf7d6c3ebabbee53ee5dd2b29663e20d33b1ccc29ba648
-
SSDEEP
49152:YJKaJEfd6Shi/BRlAc9h85Gr9jnjnHZnxv6ERyeJ2VGmTfxT4XhdANXlkybM08IC:YJ3kcRlAc9S5GFnrdxqeJ5mTf8dA/kyQ
Malware Config
Signatures
-
resource yara_rule sample upx -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource YellowSkull 1.0.exe
Files
-
YellowSkull 1.0.exe.exe windows:4 windows x86 arch:x86
Headers
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
Sections
UPX0 Size: - Virtual size: 7.1MB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 2.5MB - Virtual size: 2.5MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 2KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE