Static task
static1
Behavioral task
behavioral1
Sample
nslookup.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
nslookup.exe
Resource
win10v2004-20230220-en
General
-
Target
nslookup.exe.7z
-
Size
32KB
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MD5
952b0bf15d426e23c07e6b4cfe114403
-
SHA1
949a10dc8ec8a13fde1199e643f32aeb41fb95d0
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SHA256
67530196bed8c53769ecb712aaf9982062df00ffac4bc0addeff26c39e47adf4
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SHA512
20a0d7d563118d62f7f93ba1932ffb57c3c43113c85fa74f0918712ab48995055c2672775ce1bf347aa0972c655f20c58dc0f7303f58767fbfdf17a9233b3219
-
SSDEEP
768:w+W9p6krKQgnSctk7klQLiS54HkKIRui8JX71M:wX4Tk7klQ9CHkKI0i84
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/nslookup.exe
Files
-
nslookup.exe.7z.7z
Password: infected
-
nslookup.exe.exe windows x64
ec3e3c718c086fab4f7f35008a5e9116
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Imports
msvcrt
putc
_vsnprintf
malloc
sscanf_s
system
getenv
printf
fwrite
strchr
fputc
fprintf
memset
perror
exit
strcpy_s
fputs
?terminate@@YAXXZ
_commode
_fmode
__C_specific_handler
_initterm
strcat_s
gmtime
__setusermatherr
isspace
getc
_cexit
realloc
_exit
putchar
__set_app_type
ferror
__getmainargs
sprintf_s
fflush
_amsg_exit
_XcptFilter
_write
fclose
memcpy
strncmp
fgets
_strnicmp
free
strncpy_s
fread
fopen
__iob_func
strcmp
api-ms-win-core-heap-l1-1-0
HeapAlloc
HeapFree
HeapSetInformation
GetProcessHeap
ws2_32
htonl
WSAStartup
select
getaddrinfo
gethostname
closesocket
send
socket
connect
recv
WSAGetLastError
getprotobynumber
getservbyport
ntohs
freeaddrinfo
inet_ntoa
htons
crypt32
CryptBinaryToStringA
api-ms-win-core-errorhandling-l1-1-0
UnhandledExceptionFilter
SetLastError
GetLastError
SetUnhandledExceptionFilter
dnsapi
DnsQueryConfigAllocEx
DnsFreeConfigStructure
api-ms-win-core-localization-l1-2-0
FormatMessageA
SetThreadUILanguage
api-ms-win-core-registry-l1-1-0
RegCloseKey
api-ms-win-core-processenvironment-l1-1-0
ExpandEnvironmentStringsA
mswsock
s_perror
api-ms-win-core-heap-l2-1-0
LocalFree
api-ms-win-core-synch-l1-2-0
Sleep
api-ms-win-core-rtlsupport-l1-1-0
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
api-ms-win-core-processthreads-l1-1-0
TerminateProcess
GetCurrentProcessId
GetCurrentThreadId
GetCurrentProcess
api-ms-win-core-libraryloader-l1-2-0
GetModuleHandleW
api-ms-win-core-profile-l1-1-0
QueryPerformanceCounter
api-ms-win-core-sysinfo-l1-1-0
GetTickCount
GetSystemTimeAsFileTime
ntdll
NtQueryValueKey
RtlFreeHeap
RtlUnicodeStringToAnsiString
RtlFreeUnicodeString
NtOpenKey
RtlAllocateHeap
RtlAnsiStringToUnicodeString
RtlIpv6StringToAddressExA
RtlIpv4StringToAddressA
RtlIpv6AddressToStringA
RtlInitString
api-ms-win-core-delayload-l1-1-1
ResolveDelayLoadedAPI
api-ms-win-core-delayload-l1-1-0
DelayLoadFailureHook
api-ms-win-core-apiquery-l1-1-0
ApiSetQueryApiSetPresence
Sections
.text Size: 44KB - Virtual size: 42KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 20KB - Virtual size: 19KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 16KB - Virtual size: 21KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 4KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.didat Size: 4KB - Virtual size: 16B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 4KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 4KB - Virtual size: 344B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ