coolcut[.]exe | Triage

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General

Target

coolcut.exe
Size

636KB
MD5

002abbb17c0ec1a3197b523b6707ebff
SHA1

bbc69c3467aa0641dbe01f45574694d0d7d9a30e
SHA256

2b5e0869eaaa82b24da510e26afd93bd3e6bf414b9b01056deebfac3a633031d
SHA512

f508282da8c39f1fa0f815227c1d1a7b8f3c808eb9b1c8eb9e5f4a50338a9c24f6690839bfecb3207db74faaf193067f0e94ed3cc69b3b2bc2f7a4361e0e339b
SSDEEP

12288:S66awV2kk2AFLI6qvHWBnYxugFl1rC7UCxwHbvlfiNiUgJAeyTOy1veK9lu1J:Dkk2MLI6gWBIl1rixwHbvlfi8Ug+hluX

Score

1^/10

Malware Config

Signatures

NSIS installer 2 IoCs

installer

resource	yara_rule
sample	nsis_installer_1
sample	nsis_installer_2

Files

coolcut.exe
.exe windows x86

3abe302b6d9a1256e6a915429af4ffd2

Code Sign

06:5f:44:9f:93:0e:5e:4c:61:cf:df:c8:31:5b:46:9d
Certificate

Issuer

CN=DigiCert EV Code Signing CA (SHA2),OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

17/09/2020, 00:00

Not After

22/09/2021, 12:00

Subject

SERIALNUMBER=91440115766121586D,CN=广州爱拍网络科技有限公司,O=广州爱拍网络科技有限公司,L=广州市,ST=广东省,C=CN,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.1=#0c09e5b9bfe5b79ee5b882,1.3.6.1.4.1.311.60.2.1.2=#0c09e5b9bfe4b89ce79c81,1.3.6.1.4.1.311.60.2.1.3=#1302434e

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

03:f1:b4:e1:5f:3a:82:f1:14:96:78:b3:d7:d8:47:5c
Certificate

Issuer

CN=DigiCert High Assurance EV Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

18/04/2012, 12:00

Not After

18/04/2027, 12:00

Subject

CN=DigiCert EV Code Signing CA (SHA2),OU=www.digicert.com,O=DigiCert Inc,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12
Certificate

Issuer

CN=VeriSign Universal Root Certification Authority,OU=VeriSign Trust Network+OU=(c) 2008 VeriSign\, Inc. - For authorized use only,O=VeriSign\, Inc.,C=US

Not Before

12/01/2016, 00:00

Not After

11/01/2031, 23:59

Subject

CN=Symantec SHA256 TimeStamping CA,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

7b:d4:e5:af:ba:cc:07:3f:a1:01:23:04:22:41:4d:12
Certificate

Issuer

CN=Symantec SHA256 TimeStamping CA,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Not Before

23/12/2017, 00:00

Not After

22/03/2029, 23:59

Subject

CN=Symantec SHA256 TimeStamping Signer - G3,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

40:a6:fb:c7:a9:21:cc:c6:46:50:e1:56:a4:9c:de:83:fe:1f:f0:40
Signer

Actual PE Digest

40:a6:fb:c7:a9:21:cc:c6:46:50:e1:56:a4:9c:de:83:fe:1f:f0:40

Digest Algorithm

sha1

PE Digest Matches

true

Signature Validations

Trusted

true

Verification

Signing Certificate

SERIALNUMBER=91440115766121586D,CN=广州爱拍网络科技有限公司,O=广州爱拍网络科技有限公司,L=广州市,ST=广东省,C=CN,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.1=#0c09e5b9bfe5b79ee5b882,1.3.6.1.4.1.311.60.2.1.2=#0c09e5b9bfe4b89ce79c81,1.3.6.1.4.1.311.60.2.1.3=#1302434e

02/11/2020, 10:01
Valid: true

Chain 1

SERIALNUMBER=91440115766121586D,CN=广州爱拍网络科技有限公司,O=广州爱拍网络科技有限公司,L=广州市,ST=广东省,C=CN,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.1=#0c09e5b9bfe5b79ee5b882,1.3.6.1.4.1.311.60.2.1.2=#0c09e5b9bfe4b89ce79c81,1.3.6.1.4.1.311.60.2.1.3=#1302434e

CN=DigiCert EV Code Signing CA (SHA2),OU=www.digicert.com,O=DigiCert Inc,C=US

CN=DigiCert High Assurance EV Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
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

kernel32

GetTempPathA
GetFileSize
GetModuleFileNameA
GetCurrentProcess
CopyFileA
ExitProcess
SetEnvironmentVariableA
Sleep
GetTickCount
GetCommandLineA
lstrlenA
GetVersion
SetErrorMode
lstrcpynA
GetDiskFreeSpaceA
GlobalUnlock
GetWindowsDirectoryA
SetCurrentDirectoryA
GetLastError
CreateDirectoryA
CreateProcessA
RemoveDirectoryA
CreateFileA
GetTempFileNameA
ReadFile
WriteFile
lstrcpyA
MoveFileExA
lstrcatA
GetSystemDirectoryA
GetProcAddress
GetExitCodeProcess
WaitForSingleObject
CompareFileTime
SetFileAttributesA
GetFileAttributesA
GetShortPathNameA
MoveFileA
GetFullPathNameA
SetFileTime
SearchPathA
CloseHandle
lstrcmpiA
CreateThread
GlobalLock
lstrcmpA
FindFirstFileA
FindNextFileA
DeleteFileA
SetFilePointer
GetPrivateProfileStringA
FindClose
MultiByteToWideChar
FreeLibrary
MulDiv
WritePrivateProfileStringA
LoadLibraryExA
GetModuleHandleA
GlobalAlloc
GlobalFree
ExpandEnvironmentStringsA

user32

ScreenToClient
GetSystemMenu
SetClassLongA
IsWindowEnabled
SetWindowPos
GetSysColor
GetWindowLongA
SetCursor
LoadCursorA
CheckDlgButton
GetMessagePos
LoadBitmapA
CallWindowProcA
IsWindowVisible
CloseClipboard
SetClipboardData
EmptyClipboard
PostQuitMessage
GetWindowRect
EnableMenuItem
CreatePopupMenu
GetSystemMetrics
SetDlgItemTextA
GetDlgItemTextA
MessageBoxIndirectA
CharPrevA
DispatchMessageA
PeekMessageA
ReleaseDC
EnableWindow
InvalidateRect
SendMessageA
DefWindowProcA
BeginPaint
GetClientRect
FillRect
DrawTextA
EndDialog
RegisterClassA
SystemParametersInfoA
CreateWindowExA
GetClassInfoA
DialogBoxParamA
CharNextA
ExitWindowsEx
GetDC
CreateDialogParamA
SetTimer
GetDlgItem
SetWindowLongA
SetForegroundWindow
LoadImageA
IsWindow
SendMessageTimeoutA
FindWindowExA
OpenClipboard
TrackPopupMenu
AppendMenuA
EndPaint
DestroyWindow
wsprintfA
ShowWindow
SetWindowTextA

gdi32

SelectObject
SetBkMode
CreateFontIndirectA
SetTextColor
DeleteObject
GetDeviceCaps
CreateBrushIndirect
SetBkColor

shell32

SHGetSpecialFolderLocation
ShellExecuteExA
SHGetPathFromIDListA
SHBrowseForFolderA
SHGetFileInfoA
SHFileOperationA

advapi32

AdjustTokenPrivileges
RegCreateKeyExA
RegOpenKeyExA
SetFileSecurityA
OpenProcessToken
LookupPrivilegeValueA
RegEnumValueA
RegDeleteKeyA
RegDeleteValueA
RegCloseKey
RegSetValueExA
RegQueryValueExA
RegEnumKeyA

comctl32

ImageList_Create
ImageList_AddMasked
ImageList_Destroy
ord17

ole32

OleUninitialize
OleInitialize
CoTaskMemFree
CoCreateInstance

Sections

.text
Size: 25KB - Virtual size: 24KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 1KB - Virtual size: 149KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.ndata
Size: - Virtual size: 80KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 18KB - Virtual size: 17KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

3abe302b6d9a1256e6a915429af4ffd2

Code Sign

06:5f:44:9f:93:0e:5e:4c:61:cf:df:c8:31:5b:46:9dCertificate

Extended Key Usages

Key Usages

03:f1:b4:e1:5f:3a:82:f1:14:96:78:b3:d7:d8:47:5cCertificate

Extended Key Usages

Key Usages

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12Certificate

Extended Key Usages

Key Usages

7b:d4:e5:af:ba:cc:07:3f:a1:01:23:04:22:41:4d:12Certificate

Extended Key Usages

Key Usages

40:a6:fb:c7:a9:21:cc:c6:46:50:e1:56:a4:9c:de:83:fe:1f:f0:40Signer

Signature Validations

Verification

02/11/2020, 10:01 Valid: true

Chain 1

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

shell32

advapi32

comctl32

ole32

Sections

.text Size: 25KB - Virtual size: 24KB

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

.data Size: 1KB - Virtual size: 149KB

.ndata Size: - Virtual size: 80KB

.rsrc Size: 18KB - Virtual size: 17KB

06:5f:44:9f:93:0e:5e:4c:61:cf:df:c8:31:5b:46:9d
Certificate

03:f1:b4:e1:5f:3a:82:f1:14:96:78:b3:d7:d8:47:5c
Certificate

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12
Certificate

7b:d4:e5:af:ba:cc:07:3f:a1:01:23:04:22:41:4d:12
Certificate

40:a6:fb:c7:a9:21:cc:c6:46:50:e1:56:a4:9c:de:83:fe:1f:f0:40
Signer

02/11/2020, 10:01
Valid: true

.text
Size: 25KB - Virtual size: 24KB

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

.data
Size: 1KB - Virtual size: 149KB

.ndata
Size: - Virtual size: 80KB

.rsrc
Size: 18KB - Virtual size: 17KB