2024-06-15_d4528f65824b6f5751568b4374bc4ba6_cryptolocker

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General

Target

2024-06-15_d4528f65824b6f5751568b4374bc4ba6_cryptolocker
Size

43KB
MD5

d4528f65824b6f5751568b4374bc4ba6
SHA1

24c4b86c2bc7305113eceaa874756591b31f665e
SHA256

c1134ad893b52754df869569d1c0bfd85c50b3ac3307da860d6bcb5fd178c9c6
SHA512

4d745632167faad3666ac08d71501a8184d8d0d9f43e15e1ac9aa01623a8667990e75b0bb26d1c36e6c2c930d409e40aed3a2762fbcc9446347f61a09c4aa75d
SSDEEP

768:bQyC4GyNM01GuQMNXwXOQ69zbjlAAX5e9z9:bQpYayGiAizbR9Xwz9

Score

10^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
sample	CryptoLocker_rule2

Files

2024-06-15_d4528f65824b6f5751568b4374bc4ba6_cryptolocker
.exe windows:5 windows x86 arch:x86

ad86a1414a0514f4c041167365378f70

Code Sign

33:00:00:04:39:f6:1f:7a:67:6d:a0:00:af:00:00:00:00:04:39
Certificate

Issuer

CN=Microsoft Code Signing PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

02/09/2021, 18:25

Not After

01/09/2022, 18:25

Subject

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:0c:52:4c:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

06/07/2010, 20:40

Not After

06/07/2025, 20:50

Subject

CN=Microsoft Code Signing PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

33:00:00:02:55:18:1d:a4:2e:e0:86:fc:15:00:00:00:00:02:55
Certificate

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

02/09/2021, 18:33

Not After

01/09/2022, 18:33

Subject

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:0e:90:d2:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

08/07/2011, 20:59

Not After

08/07/2026, 21:09

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

31:48:5d:83:43:8f:a9:2b:85:90:53:03:ac:fb:79:60:62:09:bb:5e:6f:26:56:2e:dc:60:24:01:8e:8c:77:41
Signer

Actual PE Digest

31:48:5d:83:43:8f:a9:2b:85:90:53:03:ac:fb:79:60:62:09:bb:5e:6f:26:56:2e:dc:60:24:01:8e:8c:77:41

Digest Algorithm

sha256

PE Digest Matches

false

31:48:5d:83:43:8f:a9:2b:85:90:53:03:ac:fb:79:60:62:09:bb:5e:6f:26:56:2e:dc:60:24:01:8e:8c:77:41
Signer

Actual PE Digest

31:48:5d:83:43:8f:a9:2b:85:90:53:03:ac:fb:79:60:62:09:bb:5e:6f:26:56:2e:dc:60:24:01:8e:8c:77:41

Digest Algorithm

sha256

PE Digest Matches

false

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

Imports

user32

EndPaint
GetMessageA
DrawTextA
ShowWindow
UpdateWindow
DispatchMessageA
BeginPaint
TranslateMessage
CreateWindowExA
RegisterClassExA
DefWindowProcA
MessageBoxA
SendMessageA
DestroyWindow
LoadIconA
GetWindowRect
LoadCursorA
PostQuitMessage
SetWindowPos

kernel32

GetLastError
lstrcpyA
GetModuleHandleA
GetCommandLineA
FindFirstFileA
GetCurrentDirectoryA
FindClose
FindNextFileA
DeleteFileA
CloseHandle
CreateFileA

gdi32

CreateFontIndirectA

Sections

.text
Size: 11KB - Virtual size: 10KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 10KB - Virtual size: 9KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

ad86a1414a0514f4c041167365378f70

Code Sign

33:00:00:04:39:f6:1f:7a:67:6d:a0:00:af:00:00:00:00:04:39Certificate

Extended Key Usages

61:0c:52:4c:00:00:00:00:00:03Certificate

Key Usages

33:00:00:02:55:18:1d:a4:2e:e0:86:fc:15:00:00:00:00:02:55Certificate

Extended Key Usages

61:0e:90:d2:00:00:00:00:00:03Certificate

Key Usages

31:48:5d:83:43:8f:a9:2b:85:90:53:03:ac:fb:79:60:62:09:bb:5e:6f:26:56:2e:dc:60:24:01:8e:8c:77:41Signer

31:48:5d:83:43:8f:a9:2b:85:90:53:03:ac:fb:79:60:62:09:bb:5e:6f:26:56:2e:dc:60:24:01:8e:8c:77:41Signer

Headers

File Characteristics

Imports

user32

kernel32

gdi32

Sections

.text Size: 11KB - Virtual size: 10KB

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

.data Size: 512B - Virtual size: 1KB

.rsrc Size: 10KB - Virtual size: 9KB

33:00:00:04:39:f6:1f:7a:67:6d:a0:00:af:00:00:00:00:04:39
Certificate

61:0c:52:4c:00:00:00:00:00:03
Certificate

33:00:00:02:55:18:1d:a4:2e:e0:86:fc:15:00:00:00:00:02:55
Certificate

61:0e:90:d2:00:00:00:00:00:03
Certificate

31:48:5d:83:43:8f:a9:2b:85:90:53:03:ac:fb:79:60:62:09:bb:5e:6f:26:56:2e:dc:60:24:01:8e:8c:77:41
Signer

31:48:5d:83:43:8f:a9:2b:85:90:53:03:ac:fb:79:60:62:09:bb:5e:6f:26:56:2e:dc:60:24:01:8e:8c:77:41
Signer

.text
Size: 11KB - Virtual size: 10KB

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

.data
Size: 512B - Virtual size: 1KB

.rsrc
Size: 10KB - Virtual size: 9KB