Webex[.]exe | Triage

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General

Target

Webex.exe
Size

1.5MB
MD5

1e6d6160d84203e38ca357118607bd1b
SHA1

384588c3d364d874f17b16c1373892c1b57b16fd
SHA256

9aa50f881565d54de0eca429e07595a729c3d55b6f7bedf6bbacea34ddc2fcd2
SHA512

3c4c15e2f9f9f4396ec9b2d02cc184c9f7fd4508b33c18b7a79c4c63fc3a1f0a36bf3a6dcca5e485030a3de8b4a477300b320cd6fe081bba6b1411c749c78e95
SSDEEP

24576:kOyEWHe/n9FPZAu3LojkBXblmf0kpWQLTjPdKud2FwJFH5HEjGZmtW:ks8e1h3IkBX5mf0O5LTj1KuEwJFZnog

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:6 windows x86 arch: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

04:93:5b:ba:23:6b:f2:1f:0e:01:cc:5f:e3:78:90:b2
Certificate

Issuer

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

Not Before

25/02/2024, 00:00

Not After

26/02/2025, 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

52:e4:14:1d:61:bc:cc:aa:db:c0:d3:e6:33:25:86:db:19:97:6b:b9:4c:50:9c:2e:29:9a:a4:ee:75:07:72:4d
Signer

Actual PE Digest

52:e4:14:1d:61:bc:cc:aa:db:c0:d3:e6:33:25:86:db:19:97:6b:b9:4c:50:9c:2e:29:9a:a4:ee:75:07:72:4d

Digest Algorithm

sha256

PE Digest Matches

true

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: 2.9MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 1.5MB - Virtual size: 1.5MB

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

04:93:5b:ba:23:6b:f2:1f:0e:01:cc:5f:e3:78:90:b2Certificate

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

52:e4:14:1d:61:bc:cc:aa:db:c0:d3:e6:33:25:86:db:19:97:6b:b9:4c:50:9c:2e:29:9a:a4:ee:75:07:72:4dSigner

Headers

DLL Characteristics

File Characteristics

Sections

UPX0 Size: - Virtual size: 2.9MB

UPX1 Size: 1.5MB - Virtual size: 1.5MB

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

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

04:93:5b:ba:23:6b:f2:1f:0e:01:cc:5f:e3:78:90:b2
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

52:e4:14:1d:61:bc:cc:aa:db:c0:d3:e6:33:25:86:db:19:97:6b:b9:4c:50:9c:2e:29:9a:a4:ee:75:07:72:4d
Signer

UPX0
Size: - Virtual size: 2.9MB

UPX1
Size: 1.5MB - Virtual size: 1.5MB

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