2024-06-20_61797c156e18fe64c2d1384fd9b46748_cryptolocker

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General

Target

2024-06-20_61797c156e18fe64c2d1384fd9b46748_cryptolocker
Size

63KB
MD5

61797c156e18fe64c2d1384fd9b46748
SHA1

be9150e4b4bfb255ff31db3ea3496858a5d46aa1
SHA256

38cdad9c3c9a6f343ef7a498a0bdf84e895e85cd34a4e814d76466bf59b7320d
SHA512

f2f283c21fce04c2340f14cfa82cb7f8cca95cb1537d82f1a34c6224cca4f0a4a2215d4d2d56a78385b4f131cb45d01e0ea3f7882ea029730828e159882335f0
SSDEEP

768:0Qz7yVEhs9+syJP6ntOOtEvwDpjFSXOQ69zbjlAAX5e9z/:0j+soPSMOtEvwDpjwizbR9Xwz/

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

2024-06-20_61797c156e18fe64c2d1384fd9b46748_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

c8:ed:9e:7b:70:20:8d:2f:b4:31:eb:ff:56:55:6a:ab:18:35:59:45:c8:e6:36:c1:43:3d:0d:48:12:ad:6f:82
Signer

Actual PE Digest

c8:ed:9e:7b:70:20:8d:2f:b4:31:eb:ff:56:55:6a:ab:18:35:59:45:c8:e6:36:c1:43:3d:0d:48:12:ad:6f:82

Digest Algorithm

sha256

PE Digest Matches

false

c8:ed:9e:7b:70:20:8d:2f:b4:31:eb:ff:56:55:6a:ab:18:35:59:45:c8:e6:36:c1:43:3d:0d:48:12:ad:6f:82
Signer

Actual PE Digest

c8:ed:9e:7b:70:20:8d:2f:b4:31:eb:ff:56:55:6a:ab:18:35:59:45:c8:e6:36:c1:43:3d:0d:48:12:ad:6f:82

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

c8:ed:9e:7b:70:20:8d:2f:b4:31:eb:ff:56:55:6a:ab:18:35:59:45:c8:e6:36:c1:43:3d:0d:48:12:ad:6f:82Signer

c8:ed:9e:7b:70:20:8d:2f:b4:31:eb:ff:56:55:6a:ab:18:35:59:45:c8:e6:36:c1:43:3d:0d:48:12:ad:6f:82Signer

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

c8:ed:9e:7b:70:20:8d:2f:b4:31:eb:ff:56:55:6a:ab:18:35:59:45:c8:e6:36:c1:43:3d:0d:48:12:ad:6f:82
Signer

c8:ed:9e:7b:70:20:8d:2f:b4:31:eb:ff:56:55:6a:ab:18:35:59:45:c8:e6:36:c1:43:3d:0d:48:12:ad:6f:82
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