Firefox Installer[.]exe

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General

Target
Firefox Installer.exe
Size 326KB
Sample260625-tbpadac121
SHA256 1bbb658fd6c50b44d485f85d46af62e36729b8c4ca9a817f112fcc1b19a8dc67
MD5 7988a2fcd295af4bb07efc25a1feabb8
SHA1 056e12b4a5e759b577c4a1b07e829c8819a32b54
SHA512 54fe461b40b7efa9fedebbe231fc4c64f70e96f7b2df7ea723b05d4685181bf137574f7b5d1535feb97b5bf8f3151f4998a5638a34cde6cca1d1ccbbdf0ce7f0
SSDEEP 6144:2aVWdyzOxeA1DfdwX3MmIOrunqSSRjgZr7ThbY4AYDgcR7pn4dev+TX34o:2MROxdDfOnMmXqnymrWIgcT4devaX34o
TLSH
T18E6412E10BFD11CDD0D2FE7C5E5DC25A4F24AF260391827A6934B908BBAF9D7A914324
MD5 SHA1 SHA512 SSDEEP TLSH

Score

5^/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

Insecure Codesign Algorithm 1 IoCs

File was codesigned using an insecure algorithm.

resource
Firefox Installer.exe

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/out.upx

File Explorer

Firefox Installer.exe

.exe 326KB
out.upx

.exe 188KB

Firefox Installer.exe

SHA256 1bbb658fd6c50b44d485f85d46af62e36729b8c4ca9a817f112fcc1b19a8dc67
MD5 7988a2fcd295af4bb07efc25a1feabb8
SHA1 056e12b4a5e759b577c4a1b07e829c8819a32b54
SHA512 54fe461b40b7efa9fedebbe231fc4c64f70e96f7b2df7ea723b05d4685181bf137574f7b5d1535feb97b5bf8f3151f4998a5638a34cde6cca1d1ccbbdf0ce7f0
SSDEEP 6144:2aVWdyzOxeA1DfdwX3MmIOrunqSSRjgZr7ThbY4AYDgcR7pn4dev+TX34o:2MROxdDfOnMmXqnymrWIgcT4devaX34o
TLSH
T18E6412E10BFD11CDD0D2FE7C5E5DC25A4F24AF260391827A6934B908BBAF9D7A914324
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

UPX packed file

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

upx
Insecure Codesign Algorithm

File was codesigned using an insecure algorithm.

Digest

7e:78:c7:bd:a6:03:0f:a5:76:42:93:82:f5:87:3c:70:1c:17:af:02

Digest Algorithm

sha1

PE Digests Matches

Trusted

Signing Certificate

CN=Mozilla Corporation,OU=Firefox Engineering Operations,O=Mozilla Corporation,L=Mountain View,ST=California,C=US,1.2.840.113549.1.9.1=#0c2072656c656173652b636572746966696361746573406d6f7a696c6c612e636f6d

Chains

Nov 12, 2020

CN=DigiCert SHA2 Assured ID Code Signing CA,OU=www.digicert.com,O=DigiCert Inc,C=US

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Subject

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Serial Number

0c:e7:e0:e5:17:d8:46:fe:8f:e5:60:fc:1b:f0:30:39

Issuer

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Revocation Status

Not revoked

Timespan

Nov 10, 2006 - Nov 10, 2031

Subject

CN=DigiCert SHA2 Assured ID Code Signing CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Serial Number

04:09:18:1b:5f:d5:bb:66:75:53:43:b5:6f:95:50:08

Issuer

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

Oct 22, 2013 - Oct 22, 2028

Subject

Serial Number

0d:de:b5:3f:95:73:37:fb:ea:f9:8c:4a:61:5b:14:9d

Issuer

CN=DigiCert SHA2 Assured ID Code Signing CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

May 7, 2020 - May 12, 2021

Subject

CN=Dummy

Serial Number

7e:89:b9:df:00:6b:d1:aa:4c:48:d8:65:03:96:34:ca

Issuer

CN=Dummy

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageCodeSigning

Timespan

Jan 1, 2013 - Jan 2, 2013

Subject

CN=DigiCert Assured ID CA-1,OU=www.digicert.com,O=DigiCert Inc,C=US

Serial Number

06:fd:f9:03:96:03:ad:ea:00:0a:eb:3f:27:bb:ba:1b

Issuer

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageServerAuth, ExtKeyUsageClientAuth, ExtKeyUsageCodeSigning, ExtKeyUsageEmailProtection, ExtKeyUsageTimeStamping

Revocation Status

Not revoked

Timespan

Nov 10, 2006 - Nov 10, 2021

Subject

CN=DigiCert Timestamp Responder,O=DigiCert,C=US

Serial Number

03:01:9a:02:3a:ff:58:b1:6b:d6:d5:ea:e6:17:f0:66

Issuer

CN=DigiCert Assured ID CA-1,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageTimeStamping

Revocation Status

Not revoked

Timespan

Oct 22, 2014 - Oct 22, 2024

Minor OS version

Major OS version

Entry point

216992

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_32BIT_MACHINE

PDB paths

out.upx

SHA256 d010265be33ead064c15604dcf5e90bf9f0608585eb9a04171294941e14a95a2
MD5 2a779706848199e597315870c4b077d4
SHA1 48c674022d55ddb45d741c9c901204471ac973c7
SHA512 b092be4b0276c4fdc95ffa9635ae7be9b7babb0d3aa99bf9b6e17b8d53fc3351b1e0934ffc19639da89e580f028c5e9c38a2e78f84a071ddb546e619cf41889c
SSDEEP 3072:488bdXF8FtO5dyzEAKZ/hx7c3unn+b09CIWncYodntK+C7VieM3SFZNt9ckP:XsdXFryQfP7nn+b0AvncfdwX3MmIO
TLSH
T14414AE323AD5C8FAD2532271CB49B7EAE1FADB180814493323142E5D7FBE846931D61E
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

UPX packed file

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

upx
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

106406

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_32BIT_MACHINE

PDB paths

Firefox Installer.exe

generic

out.upx

generic