krampus[.]zip | Triage

Sharing

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General

Target

krampus.zip
Size

2.3MB
MD5

67779feb2ad467d13e00aa85692b9395
SHA1

457bfde4f6d3651d91601254bc72e403e72109f6
SHA256

3bd1c3e8a64158ba90316a4edbbbcc77130dc0d05a720c4976d857bd9a26204c
SHA512

ec71da2fe8198b18901f38d5ad72ae35470350149733899c1e93a81ce9f13b951c7e48703b9e6a0bb6c25066d4e99a069071ff33cea4190611c4935a8b56b889
SSDEEP

49152:+WR4m+R7GzLv2ZIWFLWt9iygwkU/CNn650PQAv//gWlhDr5+mbqKvae:+WR7m76Lv2IwWbhkGCNn6moAv/Lhf5+e

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/krampus/loader-5.2.exe

Files

krampus.zip
.zip
krampus/READ ME (ro-exec).txt
krampus/ezdebug.png
.png
krampus/loader-5.2.exe
.exe windows:6 windows x64 arch:x64

4f2f006e2ecf7172ad368f8289dc96c1

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
WriteConsoleW
WerSetFlags
WerGetFlags
WaitForMultipleObjects
WaitForSingleObject
VirtualQuery
VirtualFree
VirtualAlloc
TlsAlloc
SwitchToThread
SuspendThread
SetWaitableTimer
SetUnhandledExceptionFilter
SetProcessPriorityBoost
SetEvent
SetErrorMode
SetConsoleCtrlHandler
ResumeThread
RaiseFailFastException
PostQueuedCompletionStatus
LoadLibraryW
LoadLibraryExW
SetThreadContext
GetThreadContext
GetSystemInfo
GetSystemDirectoryA
GetStdHandle
GetQueuedCompletionStatusEx
GetProcessAffinityMask
GetProcAddress
GetErrorMode
GetEnvironmentStringsW
GetCurrentThreadId
GetConsoleMode
FreeEnvironmentStringsW
ExitProcess
DuplicateHandle
CreateWaitableTimerExW
CreateThread
CreateIoCompletionPort
CreateFileA
CreateEventA
CloseHandle
AddVectoredExceptionHandler

Sections

.text
Size: 2.2MB - Virtual size: 2.2MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 2.9MB - Virtual size: 2.9MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 230KB - Virtual size: 597KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 51KB - Virtual size: 51KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.xdata
Size: 512B - Virtual size: 168B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.idata
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 40KB - Virtual size: 40KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.symtab
Size: 512B - Virtual size: 4B

IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

4f2f006e2ecf7172ad368f8289dc96c1

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

Sections

.text Size: 2.2MB - Virtual size: 2.2MB

.rdata Size: 2.9MB - Virtual size: 2.9MB

.data Size: 230KB - Virtual size: 597KB

.pdata Size: 51KB - Virtual size: 51KB

.xdata Size: 512B - Virtual size: 168B

.idata Size: 1KB - Virtual size: 1KB

.reloc Size: 40KB - Virtual size: 40KB

.symtab Size: 512B - Virtual size: 4B

.text
Size: 2.2MB - Virtual size: 2.2MB

.rdata
Size: 2.9MB - Virtual size: 2.9MB

.data
Size: 230KB - Virtual size: 597KB

.pdata
Size: 51KB - Virtual size: 51KB

.xdata
Size: 512B - Virtual size: 168B

.idata
Size: 1KB - Virtual size: 1KB

.reloc
Size: 40KB - Virtual size: 40KB

.symtab
Size: 512B - Virtual size: 4B