Overview
overview
7Static
static
7a_friend.exe
windows7-x64
1a_friend.exe
windows10-2004-x64
1csrss.exe
windows7-x64
6csrss.exe
windows10-2004-x64
6instsrv.exe
windows7-x64
1instsrv.exe
windows10-2004-x64
1script.ps1
windows7-x64
1script.ps1
windows10-2004-x64
1sup.exe
windows7-x64
1sup.exe
windows10-2004-x64
1svchost.exe
windows7-x64
1svchost.exe
windows10-2004-x64
1Behavioral task
behavioral1
Sample
a_friend.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
a_friend.exe
Resource
win10v2004-20231215-en
Behavioral task
behavioral3
Sample
csrss.exe
Resource
win7-20231215-en
Behavioral task
behavioral4
Sample
csrss.exe
Resource
win10v2004-20231215-en
Behavioral task
behavioral5
Sample
instsrv.exe
Resource
win7-20231215-en
Behavioral task
behavioral6
Sample
instsrv.exe
Resource
win10v2004-20231215-en
Behavioral task
behavioral7
Sample
script.ps1
Resource
win7-20231215-en
Behavioral task
behavioral8
Sample
script.ps1
Resource
win10v2004-20231215-en
Behavioral task
behavioral9
Sample
sup.exe
Resource
win7-20231215-en
Behavioral task
behavioral10
Sample
sup.exe
Resource
win10v2004-20231215-en
Behavioral task
behavioral11
Sample
svchost.exe
Resource
win7-20231129-en
Behavioral task
behavioral12
Sample
svchost.exe
Resource
win10v2004-20231215-en
General
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Target
45147b4f15914be56d76d40bfc59881c
-
Size
1.0MB
-
MD5
45147b4f15914be56d76d40bfc59881c
-
SHA1
e185c4d10ca800b75214b53e392ab25e10374aa5
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SHA256
26c03f72a3321fb103647ee6bc0e5260207a3cfacc888fa65525b4035b235fd1
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SHA512
bf321ed48fad70e6a00a6a95ad113184371bf368a422bf596f67c5ae1eb8b4de6154b6c6507f46ef9c41de47773c362d3ebe1dfad5667eb63bfb851cb50ba457
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SSDEEP
24576:o/S74MvT1p9UuT8u5dVlO1LtGl1GEt3G3:o/W4op9Iu5dVY1k1GES
Malware Config
Signatures
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resource yara_rule static1/unpack001/a_friend.exe aspack_v212_v242 -
Unsigned PE 5 IoCs
Checks for missing Authenticode signature.
resource unpack001/a_friend.exe unpack001/csrss.exe unpack001/instsrv.exe unpack001/sup.exe unpack001/svchost.exe
Files
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45147b4f15914be56d76d40bfc59881c.rar
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Desktop.ini
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a.reg
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a_friend.exe.exe windows:4 windows x86 arch:x86
Headers
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
Sections
.text Size: 286KB - Virtual size: 604KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rdata Size: 18KB - Virtual size: 44KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.data Size: 39KB - Virtual size: 832KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.data1 Size: 512B - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.CRT Size: 4KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 11KB - Virtual size: 88KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.aspack Size: 55KB - Virtual size: 56KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.adata Size: - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
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aliases.ini
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control.ini
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csrss.exe.exe windows:4 windows x86 arch:x86
Headers
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
Sections
MEW Size: - Virtual size: 1.7MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
�uۊ�� Size: 578KB - Virtual size: 636KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
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fullname.txt
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instsrv.exe.exe windows:5 windows x86 arch:x86
53d338fb5ceeb033459bc873d466d86d
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
Imports
advapi32
CreateServiceA
DeleteService
OpenServiceA
EnumServicesStatusA
OpenSCManagerA
CloseServiceHandle
kernel32
GetLastError
CreateFileA
GetDriveTypeA
lstrcmpiA
lstrlenA
lstrcpyA
GetCommandLineA
HeapFree
GetVersionExA
HeapAlloc
GetProcessHeap
ExitProcess
GetProcAddress
GetModuleHandleA
WriteFile
GetStdHandle
GetModuleFileNameA
UnhandledExceptionFilter
FreeEnvironmentStringsA
GetEnvironmentStrings
FreeEnvironmentStringsW
WideCharToMultiByte
GetEnvironmentStringsW
SetHandleCount
GetFileType
GetStartupInfoA
HeapDestroy
HeapCreate
VirtualFree
LoadLibraryA
Sleep
GetACP
GetOEMCP
GetCPInfo
VirtualAlloc
HeapReAlloc
RtlUnwind
InterlockedExchange
VirtualQuery
MultiByteToWideChar
LCMapStringA
LCMapStringW
GetStringTypeA
GetStringTypeW
FlushFileBuffers
SetFilePointer
GetLocaleInfoA
VirtualProtect
GetSystemInfo
SetStdHandle
CloseHandle
TerminateProcess
GetCurrentProcess
SetUnhandledExceptionFilter
QueryPerformanceCounter
GetTickCount
GetCurrentThreadId
GetCurrentProcessId
GetSystemTimeAsFileTime
Sections
.text Size: 28KB - Virtual size: 27KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 2KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
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mirc.ico
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mirc.ini
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popups.txt
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remote.ini
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script.ini.ps1
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servers.ini
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sup.exe.exe windows:4 windows x86 arch:x86
Headers
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI
Sections
CODE Size: 97KB - Virtual size: 97KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
DATA Size: 6KB - Virtual size: 5KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
BSS Size: - Virtual size: 10KB
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 3KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.tls Size: - Virtual size: 12B
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rdata Size: 512B - Virtual size: 24B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 8KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 30KB - Virtual size: 30KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
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svchost.exe.exe windows:5 windows x86 arch:x86
42cccb59fb52078015be74288575c424
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
Imports
user32
wsprintfA
GetDesktopWindow
kernel32
GetLastError
ExitThread
Sleep
CreateProcessA
SetCurrentDirectoryA
ExitProcess
OpenEventA
GetCurrentProcessId
GetCurrentThreadId
GetTickCount
QueryPerformanceCounter
GetModuleHandleA
GetProcAddress
SetUnhandledExceptionFilter
GetCurrentProcess
SetEvent
CloseHandle
TerminateProcess
GetSystemTimeAsFileTime
msvcrt
_initterm
__setusermatherr
_adjust_fdiv
__p__commode
__p__fmode
__set_app_type
_controlfp
__getmainargs
exit
_cexit
_XcptFilter
_exit
_c_exit
_open
_read
_lseek
_close
_except_handler3
strncmp
_stricmp
malloc
free
__initenv
advapi32
SetServiceStatus
RegCloseKey
RegQueryValueExA
RegisterServiceCtrlHandlerA
StartServiceCtrlDispatcherA
RegOpenKeyExA
Sections
.text Size: 6KB - Virtual size: 6KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 512B - Virtual size: 132B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
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users.ini