2024-06-06_91cf5b2c40f9b82584bda0b57bb5d83d_cryptolocker

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General

Target

2024-06-06_91cf5b2c40f9b82584bda0b57bb5d83d_cryptolocker
Size

62KB
MD5

91cf5b2c40f9b82584bda0b57bb5d83d
SHA1

67fa061062191ebfc91e599ba70f88ec3d6f0cae
SHA256

7c29a6cfa27534225e95f2b3914a210ba1bb5c694fd289a66973c8214a83c64d
SHA512

5be084a026b81f17f4b38ace7621f710bfe0930687ec511ea0d4c48c26fd3f8cc82ad4fa749a64398ec685a26b1fdd44262dbb7d3007789ca4ffb092edde6a50
SSDEEP

768:0Qz7yVEhs9+syJP6ntOOtEvwDpjFSXOQ69zbjlAAX5e9zz:0j+soPSMOtEvwDpjwizbR9Xwzz

Score

10^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
sample	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
sample	CryptoLocker_set1

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
sample	UPX

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
sample	upx

Files

2024-06-06_91cf5b2c40f9b82584bda0b57bb5d83d_cryptolocker
.exe windows:5 windows x86 arch:x86

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

52:80:23:3f:0d:45:70:41:9f:1c:0a:a2:38:6f:f3:1e:a3:d4:e9:41:a5:93:f4:af:84:18:66:83:e0:0d:98:51
Signer

Actual PE Digest

52:80:23:3f:0d:45:70:41:9f:1c:0a:a2:38:6f:f3:1e:a3:d4:e9:41:a5:93:f4:af:84:18:66:83:e0:0d:98:51

Digest Algorithm

sha256

PE Digest Matches

false

52:80:23:3f:0d:45:70:41:9f:1c:0a:a2:38:6f:f3:1e:a3:d4:e9:41:a5:93:f4:af:84:18:66:83:e0:0d:98:51
Signer

Actual PE Digest

52:80:23:3f:0d:45:70:41:9f:1c:0a:a2:38:6f:f3:1e:a3:d4:e9:41:a5:93:f4:af:84:18:66:83:e0:0d:98:51

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
IMAGE_FILE_DEBUG_STRIPPED

Sections

UPX0
Size: 20KB - Virtual size: 32KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 10KB - Virtual size: 12KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 11KB - Virtual size: 12KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.imports
Size: 1024B - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

Files

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

52:80:23:3f:0d:45:70:41:9f:1c:0a:a2:38:6f:f3:1e:a3:d4:e9:41:a5:93:f4:af:84:18:66:83:e0:0d:98:51Signer

52:80:23:3f:0d:45:70:41:9f:1c:0a:a2:38:6f:f3:1e:a3:d4:e9:41:a5:93:f4:af:84:18:66:83:e0:0d:98:51Signer

Headers

File Characteristics

Sections

UPX0 Size: 20KB - Virtual size: 32KB

UPX1 Size: 10KB - Virtual size: 12KB

.rsrc Size: 11KB - Virtual size: 12KB

.imports Size: 1024B - Virtual size: 4KB

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

52:80:23:3f:0d:45:70:41:9f:1c:0a:a2:38:6f:f3:1e:a3:d4:e9:41:a5:93:f4:af:84:18:66:83:e0:0d:98:51
Signer

52:80:23:3f:0d:45:70:41:9f:1c:0a:a2:38:6f:f3:1e:a3:d4:e9:41:a5:93:f4:af:84:18:66:83:e0:0d:98:51
Signer

UPX0
Size: 20KB - Virtual size: 32KB

UPX1
Size: 10KB - Virtual size: 12KB

.rsrc
Size: 11KB - Virtual size: 12KB

.imports
Size: 1024B - Virtual size: 4KB