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Behavioral task
behavioral1
Sample
CumAuth.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
CumAuth.exe
Resource
win10v2004-20240508-en
General
-
Target
CumAuth.exe
-
Size
5.6MB
-
MD5
9ab985d33d43e13ea628b16fa94d97e8
-
SHA1
06af21d9d4a5f53f792c90e183661e94db7e1d74
-
SHA256
52f1267a3680b8f4db613452d8e39ab972ca9a6faf93d01851df660c80f04149
-
SHA512
2d95232f217ddf2952ebe1d87bb94034ef0c590b5eb9ac190ec90b239f77c8284c9dedb5623b98fbe1cc2c47c4368f3f4cd33dee918add927053f987b983b613
-
SSDEEP
98304:UM+bBRuBhWKXRWyR10xY53e+89pziTS4+hXWrROTu/cRR2JqtmZM:CBGhWSRW+KM3vqpC0XWrAqcuqYZ
Malware Config
Signatures
-
resource yara_rule sample vmprotect -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource CumAuth.exe
Files
-
CumAuth.exe.exe windows:6 windows x64 arch:x64
ff2ca35e9a85fb518383276d27a39490
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Imports
kernel32
LeaveCriticalSection
FlsSetValue
LocalAlloc
LocalFree
GetModuleFileNameW
GetProcessAffinityMask
SetProcessAffinityMask
SetThreadAffinityMask
Sleep
ExitProcess
FreeLibrary
LoadLibraryA
GetModuleHandleA
GetProcAddress
user32
GetRawInputDeviceInfoW
GetProcessWindowStation
GetProcessWindowStation
GetUserObjectInformationW
msvcp140
?sgetc@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QEAAHXZ
ws2_32
ntohl
mpr
WNetOpenEnumA
normaliz
IdnToAscii
wldap32
ord79
crypt32
CertCloseStore
rpcrt4
UuidCreate
psapi
GetModuleInformation
userenv
UnloadUserProfile
vcruntime140_1
__CxxFrameHandler4
vcruntime140
__C_specific_handler
api-ms-win-crt-runtime-l1-1-0
abort
api-ms-win-crt-stdio-l1-1-0
__p__commode
api-ms-win-crt-string-l1-1-0
isupper
api-ms-win-crt-heap-l1-1-0
_callnewh
api-ms-win-crt-math-l1-1-0
ceilf
api-ms-win-crt-conio-l1-1-0
_getch
api-ms-win-crt-utility-l1-1-0
rand
api-ms-win-crt-locale-l1-1-0
___lc_codepage_func
api-ms-win-crt-time-l1-1-0
_gmtime64
api-ms-win-crt-convert-l1-1-0
strtol
api-ms-win-crt-filesystem-l1-1-0
_stat64
advapi32
OpenProcessToken
shell32
ShellExecuteA
wtsapi32
WTSSendMessageW
Exports
Exports
Sections
.text Size: - Virtual size: 493KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: - Virtual size: 119KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: - Virtual size: 6KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: - Virtual size: 20KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.vmp0 Size: - Virtual size: 3.5MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.vmp1 Size: 5.6MB - Virtual size: 5.6MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 176B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 512B - Virtual size: 480B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ