webex[.]exe | Triage

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General

Target

webex.exe
Size

1.4MB
MD5

9980f5b6a3f3ef2ab75db1db002aeee6
SHA1

f1bc2a964e7abd55d11babf1b1fd7fbcc6d8d50b
SHA256

05f40f8d520968bde85ccc7cc843dc516086b73fe0139116e4c0c16b93e4c4e2
SHA512

322822f4568e14c515de16ab32da49f00d4fb23fd9c37fb14d17793bc59be0cfe1ec5d8fa72a1d683762298925c75066f1f7b3ab78395b3ae324fd0fcd5c0dce
SSDEEP

24576:eKP/EpYZa9Mp4ZddItJ31EoSEIgjgXn4rFmWYxuO/yJjDxP46ROLhnrzX/4Kucgz:V/Ja9Mp4XdUjEoSVq6dU/xgeehnrj/4N

Score

7^/10

upx

Malware Config

Signatures

UPX packed file 1 IoCs

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

resource	yara_rule
sample	upx

Files

webex.exe
.exe windows:6 windows x86 arch:x86

Code Sign

0f:7b:ef:fa:a9:7b:2c:43:52:39:85:e6:48:b3:4f:b3
Certificate

Issuer

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

Not Before

07/08/2023, 00:00

Not After

06/08/2024, 23:59

Subject

CN=Cisco WebEx LLC,O=Cisco WebEx LLC,L=San Jose,ST=California,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

f0:bd:02:82:3d:07:b0:98:06:b4:64:d6:5d:97:1d:82:cf:7d:2e:5e:67:76:ab:c8:cc:49:02:35:48:08:27:f5
Signer

Actual PE Digest

f0:bd:02:82:3d:07:b0:98:06:b4:64:d6:5d:97:1d:82:cf:7d:2e:5e:67:76:ab:c8:cc:49:02:35:48:08:27:f5

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: 2.6MB

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