NyrexLol[.]zip

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General

Target

NyrexLol.zip
Size

18.3MB
MD5

c6a0b8ad55d1d6ccee742c129350ea05
SHA1

b1739cc111a082e8193d05d09283965a0da6bb12
SHA256

242da22e6e982c67bbf815f07f37e34d65f5cb10fb75aa421c3f63cddb5ba3ea
SHA512

27910a8570884f2f8bd3bde0dc29b8e68eb5334d056bf6b7cdefdf2320066b598512e3076f705475195176925a4a601306a6ffacf67f2a8f1f9a60b38fbe533f
SSDEEP

393216:VIVp3hZ16xM+FD+lg6S01MoPaGwMbJ6unbJtICPuUZyRcFayqLD:VIVB/1BBgJ0eOaxMbVlNu6yRl

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/7af723qerasfjh.exe

Files

NyrexLol.zip
.zip
7af723qerasfjh.exe
.exe windows:6 windows x64 arch:x64

9e953f7bfc321fc82ab5086f36a135f3

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

WriteFile
GetSystemTimeAsFileTime
HeapAlloc
HeapFree
ExitProcess
LoadLibraryA
GetModuleHandleA
GetProcAddress

user32

GetWindowThreadProcessId

advapi32

CryptEncrypt

shell32

ShellExecuteA

msvcp140

?clear@?$basic_ios@DU?$char_traits@D@std@@@std@@QEAAXH_N@Z

ntdll

VerSetConditionMask

urlmon

URLDownloadToFileW

normaliz

IdnToAscii

wldap32

ord217

crypt32

CertFreeCertificateChain

ws2_32

recvfrom

rpcrt4

UuidToStringA

psapi

GetModuleInformation

userenv

UnloadUserProfile

vcruntime140_1

__CxxFrameHandler4

vcruntime140

memcpy

api-ms-win-crt-stdio-l1-1-0

fopen

api-ms-win-crt-heap-l1-1-0

malloc

api-ms-win-crt-utility-l1-1-0

qsort

api-ms-win-crt-filesystem-l1-1-0

rename

api-ms-win-crt-string-l1-1-0

tolower

api-ms-win-crt-time-l1-1-0

_localtime64

api-ms-win-crt-runtime-l1-1-0

_exit

api-ms-win-crt-convert-l1-1-0

strtoull

api-ms-win-crt-locale-l1-1-0

localeconv

api-ms-win-crt-math-l1-1-0

__setusermatherr

Sections

.text
Size: - Virtual size: 458KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: - Virtual size: 103KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: - Virtual size: 9.2MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: - Virtual size: 18KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.n2Q
Size: - Virtual size: 11.0MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.LHf
Size: 5KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.Koc
Size: 19.9MB - Virtual size: 19.9MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 292B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 512B - Virtual size: 480B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

9e953f7bfc321fc82ab5086f36a135f3

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

advapi32

shell32

msvcp140

ntdll

urlmon

normaliz

wldap32

crypt32

ws2_32

rpcrt4

psapi

userenv

vcruntime140_1

vcruntime140

api-ms-win-crt-stdio-l1-1-0

api-ms-win-crt-heap-l1-1-0

api-ms-win-crt-utility-l1-1-0

api-ms-win-crt-filesystem-l1-1-0

api-ms-win-crt-string-l1-1-0

api-ms-win-crt-time-l1-1-0

api-ms-win-crt-runtime-l1-1-0

api-ms-win-crt-convert-l1-1-0

api-ms-win-crt-locale-l1-1-0

api-ms-win-crt-math-l1-1-0

Sections

.text Size: - Virtual size: 458KB

.rdata Size: - Virtual size: 103KB

.data Size: - Virtual size: 9.2MB

.pdata Size: - Virtual size: 18KB

.n2Q Size: - Virtual size: 11.0MB

.LHf Size: 5KB - Virtual size: 4KB

.Koc Size: 19.9MB - Virtual size: 19.9MB

.reloc Size: 512B - Virtual size: 292B

.rsrc Size: 512B - Virtual size: 480B

.text
Size: - Virtual size: 458KB

.rdata
Size: - Virtual size: 103KB

.data
Size: - Virtual size: 9.2MB

.pdata
Size: - Virtual size: 18KB

.n2Q
Size: - Virtual size: 11.0MB

.LHf
Size: 5KB - Virtual size: 4KB

.Koc
Size: 19.9MB - Virtual size: 19.9MB

.reloc
Size: 512B - Virtual size: 292B

.rsrc
Size: 512B - Virtual size: 480B