Behavioral task
behavioral1
Sample
oleObject1.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
oleObject1.exe
Resource
win10v2004-20230915-en
Behavioral task
behavioral3
Sample
oleObject2.exe
Resource
win7-20230831-en
Behavioral task
behavioral4
Sample
oleObject2.exe
Resource
win10v2004-20230915-en
General
-
Target
ce556d55e07bf6b57e3e086e57e9c52552ac7f00adf4a7c9f99bbc21a5ac26c2_JC.zip
-
Size
4.6MB
-
MD5
e31ac765d1e97698bc1efe443325e497
-
SHA1
930e2525c58d7509826be955f6d24b24370f7b25
-
SHA256
ce556d55e07bf6b57e3e086e57e9c52552ac7f00adf4a7c9f99bbc21a5ac26c2
-
SHA512
d11088e02895452a1af0df8e47449aa3150fa8c3c671bf2cd75a45c3e17ad816686dd765b7734d3310d55756ee50db3d5312e89259a10987d4bfe8354b4c98d1
-
SSDEEP
98304:NYbWb6xADjz3FBUiDVIyXLlgjkKhixejHb5LD6pdwk4rWso10+NJwUVIm/JCdK+l:ibuQAHjAiqy2kymu5LadwFrLo10+NJwl
Malware Config
Extracted
crimsonrat
162.245.191.217
Signatures
-
Crimsonrat family
-
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
Processes:
resource unpack001/oleObject1.bin unpack001/oleObject2.bin
Files
-
ce556d55e07bf6b57e3e086e57e9c52552ac7f00adf4a7c9f99bbc21a5ac26c2_JC.zip.zip
-
oleObject1.bin.exe windows:4 windows 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: 11.5MB - Virtual size: 11.5MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 337KB - Virtual size: 337KB
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
-
oleObject2.bin.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_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 11.5MB - Virtual size: 11.5MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 337KB - Virtual size: 337KB
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