Firefox Installer[.]exe

Sharing

Copy URL Twitter E-mail

General

Target

Firefox Installer.exe
Size

389KB
MD5

51fe760400829de8ebee805074896a20
SHA1

553f88d5c1470e774a303404c7fe83af8e55baa7
SHA256

876a09b4f35cb812afb96df19fa824a49fe257954407cb35886f6604fa4b564d
SHA512

dbd5410137794d66a750cb8e02290a7a250b7443eed5589fd61d1e656abcd615bb5933fd4540589ede33623d1883b773738b90c0917bfd66b9a3d095a7720a43
SSDEEP

12288:EvHOmh9159ZWAnMmcefv75YLjnDdQ2EB0A3Ir:4Z15FnvcmT5Y7nEh3Y

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

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/out.upx

Files

Firefox Installer.exe
.exe windows:6 windows x86 arch:x86

Code Sign

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

Issuer

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

Not Before

10/11/2006, 00:00

Not After

10/11/2031, 00:00

Subject

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

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

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

Issuer

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

Not Before

22/10/2013, 12:00

Not After

22/10/2028, 12:00

Subject

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

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

0c:1c:d3:ee:a4:7e:dd:a7:a0:32:57:3b:01:4d:0a:fd
Certificate

Issuer

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

Not Before

09/04/2021, 00:00

Not After

19/06/2024, 23:59

Subject

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

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

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

Issuer

CN=Dummy

Not Before

01/01/2013, 07:00

Not After

02/01/2013, 07:00

Subject

CN=Dummy

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5b
Certificate

Issuer

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

Not Before

23/03/2022, 00:00

Not After

22/03/2037, 23:59

Subject

CN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5a
Certificate

Issuer

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

Not Before

01/08/2022, 00:00

Not After

09/11/2031, 23:59

Subject

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

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

05:44:af:f3:94:9d:08:39:a6:bf:db:3f:5f:e5:61:16
Certificate

Issuer

CN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=US

Not Before

14/07/2023, 00:00

Not After

13/10/2034, 23:59

Subject

CN=DigiCert Timestamp 2023,O=DigiCert\, Inc.,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

61:2a:37:a9:e2:5c:cb:cb:ff:0b:f6:ae:3f:db:9d:96:77:ec:5b:78:cd:56:23:d9:d7:27:5f:04:2b:4e:97:e7
Signer

Actual PE Digest

61:2a:37:a9:e2:5c:cb:cb:ff:0b:f6:ae:3f:db:9d:96:77:ec:5b:78:cd:56:23:d9:d7:27:5f:04:2b:4e:97:e7

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: 208KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 112KB - Virtual size: 112KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 63KB - Virtual size: 64KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
out.upx
.exe windows:6 windows x86 arch:x86

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

.text
Size: 162KB - Virtual size: 162KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 47KB - Virtual size: 46KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 5KB - Virtual size: 16KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 63KB - Virtual size: 63KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 10KB - Virtual size: 10KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

Code Sign

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

Key Usages

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

Extended Key Usages

Key Usages

0c:1c:d3:ee:a4:7e:dd:a7:a0:32:57:3b:01:4d:0a:fdCertificate

Extended Key Usages

Key Usages

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

Extended Key Usages

Key Usages

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5bCertificate

Extended Key Usages

Key Usages

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5aCertificate

Key Usages

05:44:af:f3:94:9d:08:39:a6:bf:db:3f:5f:e5:61:16Certificate

Extended Key Usages

Key Usages

61:2a:37:a9:e2:5c:cb:cb:ff:0b:f6:ae:3f:db:9d:96:77:ec:5b:78:cd:56:23:d9:d7:27:5f:04:2b:4e:97:e7Signer

Headers

DLL Characteristics

File Characteristics

Sections

UPX0 Size: - Virtual size: 208KB

UPX1 Size: 112KB - Virtual size: 112KB

.rsrc Size: 63KB - Virtual size: 64KB

Headers

DLL Characteristics

File Characteristics

Sections

.text Size: 162KB - Virtual size: 162KB

.rdata Size: 47KB - Virtual size: 46KB

.data Size: 5KB - Virtual size: 16KB

.rsrc Size: 63KB - Virtual size: 63KB

.reloc Size: 10KB - Virtual size: 10KB

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

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

0c:1c:d3:ee:a4:7e:dd:a7:a0:32:57:3b:01:4d:0a:fd
Certificate

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

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5b
Certificate

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5a
Certificate

05:44:af:f3:94:9d:08:39:a6:bf:db:3f:5f:e5:61:16
Certificate

61:2a:37:a9:e2:5c:cb:cb:ff:0b:f6:ae:3f:db:9d:96:77:ec:5b:78:cd:56:23:d9:d7:27:5f:04:2b:4e:97:e7
Signer

UPX0
Size: - Virtual size: 208KB

UPX1
Size: 112KB - Virtual size: 112KB

.rsrc
Size: 63KB - Virtual size: 64KB

.text
Size: 162KB - Virtual size: 162KB

.rdata
Size: 47KB - Virtual size: 46KB

.data
Size: 5KB - Virtual size: 16KB

.rsrc
Size: 63KB - Virtual size: 63KB

.reloc
Size: 10KB - Virtual size: 10KB