2024-06-12_bb795ac3640861ea46c4399a076f7e95_cryptolocker

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General

Target

2024-06-12_bb795ac3640861ea46c4399a076f7e95_cryptolocker
Size

62KB
MD5

bb795ac3640861ea46c4399a076f7e95
SHA1

097708276371d2fb8ca086c8cc4b7e8acba541ab
SHA256

80e4a628321e22d63a01c24eda130df5aa7cc36c020c56fa13a8d4e5c5181f44
SHA512

050e75b2e8f8787fbc22543e8952ddd428acd4afad0baeff8fabe591dba337c8b351cfbfdd884b9e604c5c25837babcbae5fa28f68e5728e252dd701d125c22f
SSDEEP

768:0Qz7yVEhs9+syJP6ntOOtEvwDpjFSXOQ69zbjlAAX5e9zK:0j+soPSMOtEvwDpjwizbR9XwzK

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

2024-06-12_bb795ac3640861ea46c4399a076f7e95_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

ec:ea:9a:fc:e4:80:99:ee:65:d1:7e:30:5e:b3:4a:01:f2:7a:33:cd:96:41:16:9e:95:d5:3f:d8:94:90:c4:e7
Signer

Actual PE Digest

ec:ea:9a:fc:e4:80:99:ee:65:d1:7e:30:5e:b3:4a:01:f2:7a:33:cd:96:41:16:9e:95:d5:3f:d8:94:90:c4:e7

Digest Algorithm

sha256

PE Digest Matches

false

ec:ea:9a:fc:e4:80:99:ee:65:d1:7e:30:5e:b3:4a:01:f2:7a:33:cd:96:41:16:9e:95:d5:3f:d8:94:90:c4:e7
Signer

Actual PE Digest

ec:ea:9a:fc:e4:80:99:ee:65:d1:7e:30:5e:b3:4a:01:f2:7a:33:cd:96:41:16:9e:95:d5:3f:d8:94:90:c4:e7

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

ec:ea:9a:fc:e4:80:99:ee:65:d1:7e:30:5e:b3:4a:01:f2:7a:33:cd:96:41:16:9e:95:d5:3f:d8:94:90:c4:e7Signer

ec:ea:9a:fc:e4:80:99:ee:65:d1:7e:30:5e:b3:4a:01:f2:7a:33:cd:96:41:16:9e:95:d5:3f:d8:94:90:c4:e7Signer

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

ec:ea:9a:fc:e4:80:99:ee:65:d1:7e:30:5e:b3:4a:01:f2:7a:33:cd:96:41:16:9e:95:d5:3f:d8:94:90:c4:e7
Signer

ec:ea:9a:fc:e4:80:99:ee:65:d1:7e:30:5e:b3:4a:01:f2:7a:33:cd:96:41:16:9e:95:d5:3f:d8:94:90:c4:e7
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