2024-06-20_37740fd22370a23b1433af352937c951_cryptolocker

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General

Target

2024-06-20_37740fd22370a23b1433af352937c951_cryptolocker
Size

63KB
MD5

37740fd22370a23b1433af352937c951
SHA1

6283b8df17142eb98a062d09ce06b77455af71c7
SHA256

1705825f6837f84ecdb30733584498720b85e3a2040754cc31077c3b08c7deea
SHA512

50aa6b58c9631096ecc056e0081d7733ac9fe0299bb38dd5979a71da025e4e084c3eba520cb55be52a3d1d1dc6f091bf8ef040121c963a020f66893250ce129a
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

2024-06-20_37740fd22370a23b1433af352937c951_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

53:b1:cd:97:07:d2:46:b4:98:17:b3:bc:69:9d:73:c7:d4:bf:fd:62:d9:9b:87:3e:40:89:9b:6b:a3:87:bf:fd
Signer

Actual PE Digest

53:b1:cd:97:07:d2:46:b4:98:17:b3:bc:69:9d:73:c7:d4:bf:fd:62:d9:9b:87:3e:40:89:9b:6b:a3:87:bf:fd

Digest Algorithm

sha256

PE Digest Matches

false

53:b1:cd:97:07:d2:46:b4:98:17:b3:bc:69:9d:73:c7:d4:bf:fd:62:d9:9b:87:3e:40:89:9b:6b:a3:87:bf:fd
Signer

Actual PE Digest

53:b1:cd:97:07:d2:46:b4:98:17:b3:bc:69:9d:73:c7:d4:bf:fd:62:d9:9b:87:3e:40:89:9b:6b:a3:87:bf:fd

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

53:b1:cd:97:07:d2:46:b4:98:17:b3:bc:69:9d:73:c7:d4:bf:fd:62:d9:9b:87:3e:40:89:9b:6b:a3:87:bf:fdSigner

53:b1:cd:97:07:d2:46:b4:98:17:b3:bc:69:9d:73:c7:d4:bf:fd:62:d9:9b:87:3e:40:89:9b:6b:a3:87:bf:fdSigner

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

53:b1:cd:97:07:d2:46:b4:98:17:b3:bc:69:9d:73:c7:d4:bf:fd:62:d9:9b:87:3e:40:89:9b:6b:a3:87:bf:fd
Signer

53:b1:cd:97:07:d2:46:b4:98:17:b3:bc:69:9d:73:c7:d4:bf:fd:62:d9:9b:87:3e:40:89:9b:6b:a3:87:bf:fd
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