Webex[.]exe | Triage

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General

Target

Webex.exe
Size

1.4MB
MD5

0e92820a2412a77b8fec360363c3e4b4
SHA1

3b82db7f4ddb615746774dbf33bfbe4d3b6297b1
SHA256

3e2d93720229396b19740b45950dd7cab298d48a2f95ce5e4870a8297e39003e
SHA512

d5222080961bb9a4a71f1876fccc2d973f54a86d570155a34348bd0a563da969ba65d786046ea4f44b12994d3d766c95889273851df28e1dccc0733fba017917
SSDEEP

24576:H4kokSTgn84QoJzVc7F/uAWgmIWf5nVMGaj31oTzhtWY3I/AHahh5ZfWUs:Bpex0w/NpmIuvMGcmTVtWEiAHUbWD

Score

7^/10

upx

Malware Config

Signatures

UPX packed file 1 IoCs

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

upx

resource	yara_rule
sample	upx

Files

Webex.exe
.exe windows x86

Code Sign

08:ad:40:b2:60:d2:9c:4c:9f:5e:cd:a9:bd:93:ae:d9
Certificate

Issuer

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

29/04/2021, 00:00

Not After

28/04/2036, 23:59

Subject

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

06:b4:fc:6c:07:25:42:74:ab:fb:a9:5f:88:f8:ac:0e
Certificate

Issuer

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

Not Before

22/02/2022, 00:00

Not After

20/02/2024, 23:59

Subject

CN=Cisco Systems\, Inc.,O=Cisco Systems\, Inc.,L=San Jose,ST=California,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12
Certificate

Issuer

CN=VeriSign Universal Root Certification Authority,OU=VeriSign Trust Network+OU=(c) 2008 VeriSign\, Inc. - For authorized use only,O=VeriSign\, Inc.,C=US

Not Before

12/01/2016, 00:00

Not After

11/01/2031, 23:59

Subject

CN=Symantec SHA256 TimeStamping CA,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

7b:d4:e5:af:ba:cc:07:3f:a1:01:23:04:22:41:4d:12
Certificate

Issuer

CN=Symantec SHA256 TimeStamping CA,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Not Before

23/12/2017, 00:00

Not After

22/03/2029, 23:59

Subject

CN=Symantec SHA256 TimeStamping Signer - G3,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

15:8c:c5:a5:68:5f:d7:a3:22:6c:f1:67:e7:8f:8b:79:e1:7c:4f:a3:01:47:d2:3d:02:30:5e:1e:78:a5:3d:4d
Signer

Actual PE Digest

15:8c:c5:a5:68:5f:d7:a3:22:6c:f1:67:e7:8f:8b:79:e1:7c:4f:a3:01:47:d2:3d:02:30:5e:1e:78:a5:3d:4d

Digest Algorithm

sha256

PE Digest Matches

true

Signature Validations

Trusted

true

Verification

Signing Certificate

CN=Cisco Systems\, Inc.,O=Cisco Systems\, Inc.,L=San Jose,ST=California,C=US

03/11/2022, 21:36
Valid: true

Chain 1

CN=Cisco Systems\, Inc.,O=Cisco Systems\, Inc.,L=San Jose,ST=California,C=US

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Sections

UPX0
Size: - Virtual size: 2.5MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 1.3MB - Virtual size: 1.3MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 49KB - Virtual size: 52KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

Files

Code Sign

08:ad:40:b2:60:d2:9c:4c:9f:5e:cd:a9:bd:93:ae:d9Certificate

Extended Key Usages

Key Usages

06:b4:fc:6c:07:25:42:74:ab:fb:a9:5f:88:f8:ac:0eCertificate

Extended Key Usages

Key Usages

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12Certificate

Extended Key Usages

Key Usages

7b:d4:e5:af:ba:cc:07:3f:a1:01:23:04:22:41:4d:12Certificate

Extended Key Usages

Key Usages

15:8c:c5:a5:68:5f:d7:a3:22:6c:f1:67:e7:8f:8b:79:e1:7c:4f:a3:01:47:d2:3d:02:30:5e:1e:78:a5:3d:4dSigner

Signature Validations

Verification

03/11/2022, 21:36 Valid: true

Chain 1

Headers

DLL Characteristics

File Characteristics

Sections

UPX0 Size: - Virtual size: 2.5MB

UPX1 Size: 1.3MB - Virtual size: 1.3MB

.rsrc Size: 49KB - Virtual size: 52KB

08:ad:40:b2:60:d2:9c:4c:9f:5e:cd:a9:bd:93:ae:d9
Certificate

06:b4:fc:6c:07:25:42:74:ab:fb:a9:5f:88:f8:ac:0e
Certificate

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12
Certificate

7b:d4:e5:af:ba:cc:07:3f:a1:01:23:04:22:41:4d:12
Certificate

15:8c:c5:a5:68:5f:d7:a3:22:6c:f1:67:e7:8f:8b:79:e1:7c:4f:a3:01:47:d2:3d:02:30:5e:1e:78:a5:3d:4d
Signer

03/11/2022, 21:36
Valid: true

UPX0
Size: - Virtual size: 2.5MB

UPX1
Size: 1.3MB - Virtual size: 1.3MB

.rsrc
Size: 49KB - Virtual size: 52KB