PixbudLauncher[.]exe

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General

Target
PixbudLauncher.exe
Size 295KB
Sample260730-g8wphasbpf
SHA256 32095401f349347d7d4fa7530dd75a1951976ee3dda829fa714c0e5f5c86d227
MD5 28b18282e4f809af19c7cb0d7897b247
SHA1 12612beef608ff0b7aa9225f34d48e1e931d6e7e
SHA512 579f8af8d659937f8eb36215c40b03d8af7854d77b6b6f4766a86730e691a66ae59fcef53e5dbcb93616b7595ea32ebb6e777e940f0a7a3577b05621e2512ba0
SSDEEP 6144:bxvRZVLlfh7rZthO+JjkuHEEAt/wz/60ZEPCC:DZdfrXg+JwuKt/S/60Zq
TLSH
T13854224541484420EFFEFE784AA669CE237AD30FC46BAF5A98023D17B72B3575572432
MD5 SHA1 SHA512 SSDEEP TLSH

Score

4^/10

costura packer

Malware Config

Signatures

Costura .NET executable packer 1 IoCs

Costura packer aka Costura Fody, is an add-in for the .NET framework that embeds all external dependency .dll files as resources inside main executable.

costura packer

resource	yara_rule
sample	costura

Unsigned PE 2 IoCs

Checks for missing Authenticode signature.

resource
PixbudLauncher.exe
unpack001/costura.dll

File Explorer

PixbudLauncher.exe

.exe 295KB
costura.dll

.dll 4KB
costura.pdb

2KB
newtonsoft.json.dll

.dll 685KB
system.runtime.interopservices.runtimeinformation.dll

.dll 32KB

PixbudLauncher.exe

IMPHASH f34d5f2d4577ed6d9ceec516c1f5a744
SHA256 32095401f349347d7d4fa7530dd75a1951976ee3dda829fa714c0e5f5c86d227
MD5 28b18282e4f809af19c7cb0d7897b247
SHA1 12612beef608ff0b7aa9225f34d48e1e931d6e7e
SHA512 579f8af8d659937f8eb36215c40b03d8af7854d77b6b6f4766a86730e691a66ae59fcef53e5dbcb93616b7595ea32ebb6e777e940f0a7a3577b05621e2512ba0
SSDEEP 6144:bxvRZVLlfh7rZthO+JjkuHEEAt/wz/60ZEPCC:DZdfrXg+JwuKt/S/60Zq
TLSH
T13854224541484420EFFEFE784AA669CE237AD30FC46BAF5A98023D17B72B3575572432
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Costura .NET executable packer

Costura packer aka Costura Fody, is an add-in for the .NET framework that embeds all external dependency .dll files as resources inside main executable.

costura packer
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

302862

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_NO_SEH IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_32BIT_MACHINE

PDB paths

C:\Users\Berkay\source\repos\Berikai\pixbud\Pixbud Launcher\obj\Release\Pixbud Launcher.pdb

costura.dll

IMPHASH dae02f32a21e03ce65412f6e56942daa
SHA256 41bb464ac7c0d192641077e44a59d7d89860c3c620a59961f2fc4a4be47deae3
MD5 501981c7fc457d59238eb99780efb615
SHA1 f1f25c01f6acf33bdd62c4f82d3ef078e76f0906
SHA512 5921d0662add6c8aa075106878cc56335ccbf059d8bc7f359fe9e02a52ec657c3e5df1c718929564c09f205e4bd299b086f3e7424141f5e55ed0d756f65ee1e8
SSDEEP 48:6F+lni2qJfjVRPGwzCo4MhTN0KDdilETrVsH4/QWk1qyFVT2IbG:7g7KedGEiYIWM2
TLSH
T1F791A51097A8477BE9BB0FB6ACB3534A4275FA61DC27CB2F19C562172C123180A31F72
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Costura .NET executable packer

Costura packer aka Costura Fody, is an add-in for the .NET framework that embeds all external dependency .dll files as resources inside main executable.

costura packer
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

10378

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_CUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_NO_SEH IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_DLL

PDB paths

C:\CI_WS\Ws\198629\Source\Costura_Fody\src\Costura\obj\Release\netstandard1.0\Costura.pdb

newtonsoft.json.dll

IMPHASH dae02f32a21e03ce65412f6e56942daa
SHA256 b624949df8b0e3a6153fdfb730a7c6f4990b6592ee0d922e1788433d276610f3
MD5 081d9558bbb7adce142da153b2d5577a
SHA1 7d0ad03fbda1c24f883116b940717e596073ae96
SHA512 2fdf035661f349206f58ea1feed8805b7f9517a21f9c113e7301c69de160f184c774350a12a710046e3ff6baa37345d319b6f47fd24fbba4e042d54014bee511
SSDEEP 12288:U9BzaPm657wqehcZBLX+HK+kPJUQEKx07N0TCBGiBCjC0PDgM5j9FKjc3Q5:U8m657w6ZBLmkitKqBCjC0PDgM5A5
TLSH
T1B8E44A0633E88F66D1AF2735B8305A1997F6F407A2B6EBCF6904D5B81D677608E00367
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Costura .NET executable packer

Costura packer aka Costura Fody, is an add-in for the .NET framework that embeds all external dependency .dll files as resources inside main executable.

costura packer

Digest

2e:83:93:14:a9:06:f5:64:04:02:a1:dc:eb:a3:1a:a7:e9:21:c8:88:2c:dd:c2:3c:e4:c0:45:50:4c:ee:75:10

Digest Algorithm

sha256

PE Digests Matches

Trusted

Signing Certificate

SERIALNUMBER=603 389 068,CN=Json.NET (.NET Foundation),O=Json.NET (.NET Foundation),L=Redmond,ST=wa,C=US

Chains

Mar 17, 2021

SERIALNUMBER=603 389 068,CN=Json.NET (.NET Foundation),O=Json.NET (.NET Foundation),L=Redmond,ST=wa,C=US

CN=.NET Foundation Projects Code Signing CA,O=.NET Foundation,C=US

CN=DigiCert High Assurance EV Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Subject

CN=DigiCert High Assurance EV Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Serial Number

02:ac:5c:26:6a:0b:40:9b:8f:0b:79:f2:ae:46:25:77

Issuer

CN=DigiCert High Assurance EV 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=.NET Foundation Projects Code Signing CA,O=.NET Foundation,C=US

Serial Number

07:b0:41:8d:a5:1e:14:8c:33:1b:bc:de:b7:13:83:23

Issuer

CN=DigiCert High Assurance EV 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

Apr 27, 2018 - Apr 27, 2028

Subject

SERIALNUMBER=603 389 068,CN=Json.NET (.NET Foundation),O=Json.NET (.NET Foundation),L=Redmond,ST=wa,C=US

Serial Number

0a:71:a1:b0:c2:96:f5:c7:90:65:47:0a:3c:20:53:7e

Issuer

CN=.NET Foundation Projects Code Signing CA,O=.NET Foundation,C=US

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

Oct 25, 2018 - Oct 29, 2021

Subject

CN=DigiCert Timestamp 2021,O=DigiCert\, Inc.,C=US

Serial Number

0d:42:4a:e0:be:3a:88:ff:60:40:21:ce:14:00:f0:dd

Issuer

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

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageTimeStamping

Revocation Status

Not revoked

Timespan

Jan 1, 2021 - Jan 6, 2031

Subject

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

Serial Number

0a:a1:25:d6:d6:32:1b:7e:41:e4:05:da:36:97:c2:15

Issuer

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

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageTimeStamping

Revocation Status

Not revoked

Timespan

Jan 7, 2016 - Jan 7, 2031

Minor OS version

Major OS version

Entry point

698886

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_CUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_NO_SEH IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_DLL

PDB paths

/_/Src/Newtonsoft.Json/obj/Release/net45/Newtonsoft.Json.pdb

system.runtime.interopservices.runtimeinformation.dll

IMPHASH dae02f32a21e03ce65412f6e56942daa
SHA256 2f141b72a2af0458993e27559395d8a8cdb0b752d79b1703541a61e728b55237
MD5 82deb78891f430007e871a35ce28fac4
SHA1 4e490d7ec139a6cde53e3932d3122a48aa379904
SHA512 e47f741aa9153cfafc5f6be39987d7c7d8fb745566c4d9a4525b9f30cbe6df450d27bcdf8998dec7af824a7be0f5e9eecad2a39072b956a6320d23d94a0da71a
SSDEEP 768:vn1VM0JrpNWDcIh6leOiDFIFBYp1+ziBEBMf:vnvXYcIh6yFIFBYpczyEBMf
TLSH
T165E2FA5097FD4602F9FA0E317DB6E58B2E3A7FC65C209F6E0154A1980D677889A30F39
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Costura .NET executable packer

Costura packer aka Costura Fody, is an add-in for the .NET framework that embeds all external dependency .dll files as resources inside main executable.

costura packer

Digest

05:db:74:2f:88:32:73:ab:f9:54:bf:23:c7:95:38:b8:ec:aa:28:fd:f2:85:57:f2:b9:b4:98:f1:5d:1d:a3:59

Digest Algorithm

sha256

PE Digests Matches

Trusted

Signing Certificate

CN=Microsoft Corporation,OU=MOPR,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Chains

Nov 5, 2016

CN=Microsoft Corporation,OU=MOPR,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

PE Signature issue

Digest

56:92:ab:b2:b2:ea:e2:5f:1d:7d:b4:40:b3:91:8f:25:ff:d3:35:1d

Digest Algorithm

sha1

PE Digests Matches

Trusted

Not trusted

Signing Certificate

CN=Microsoft Corporation,OU=MOPR,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Chains

Nov 5, 2016

CN=Microsoft Corporation,OU=MOPR,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Subject

CN=Microsoft Time-Stamp Service,OU=MOPR+OU=nCipher DSE ESN:98FD-C61E-E641,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

33:00:00:00:c8:47:22:9d:a3:0d:ca:c0:58:00:00:00:00:00:c8

Issuer

CN=Microsoft Time-Stamp PCA,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Ext Key Usages

ExtKeyUsageTimeStamping

Timespan

Sep 7, 2016 - Sep 7, 2018

Subject

CN=Microsoft Corporation,OU=MOPR,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

33:00:00:01:40:96:a9:ee:70:56:fe:cc:07:00:01:00:00:01:40

Issuer

CN=Microsoft Code Signing PCA,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Ext Key Usages

ExtKeyUsageCodeSigning

Timespan

Aug 18, 2016 - Nov 2, 2017

Subject

CN=Microsoft Code Signing PCA,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

61:33:26:1a:00:00:00:00:00:31

Issuer

CN=Microsoft Root Certificate Authority,0.9.2342.19200300.100.1.25=#13096d6963726f736f6674,0.9.2342.19200300.100.1.25=#1303636f6d

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Timespan

Aug 31, 2010 - Aug 31, 2020

Subject

CN=Microsoft Time-Stamp PCA,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

61:16:68:34:00:00:00:00:00:1c

Issuer

CN=Microsoft Root Certificate Authority,0.9.2342.19200300.100.1.25=#13096d6963726f736f6674,0.9.2342.19200300.100.1.25=#1303636f6d

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageTimeStamping

Timespan

Apr 3, 2007 - Apr 3, 2021

Subject

CN=Microsoft Corporation,OU=MOPR,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

33:00:00:00:64:47:84:94:86:db:41:19:38:00:00:00:00:00:64

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Ext Key Usages

ExtKeyUsageCodeSigning

Timespan

Oct 28, 2015 - Jan 28, 2017

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

61:0e:90:d2:00:00:00:00:00:03

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Timespan

Jul 8, 2011 - Jul 8, 2026

Subject

CN=Microsoft Time-Stamp PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

61:09:81:2a:00:00:00:00:00:02

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Timespan

Jul 1, 2010 - Jul 1, 2025

Subject

CN=Microsoft Time-Stamp Service,OU=MOPR+OU=nCipher DSE ESN:7D2E-3782-B0F7,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

33:00:00:00:a2:4c:8e:1d:da:a9:21:7c:84:00:00:00:00:00:a2

Issuer

CN=Microsoft Time-Stamp PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Ext Key Usages

ExtKeyUsageTimeStamping

Timespan

Sep 7, 2016 - Sep 7, 2018

Minor OS version

Major OS version

Entry point

22454

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_CUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_NO_SEH IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_DLL

PDB paths

D:\A\_work\39\s\bin\obj\Windows_NT.AnyCPU.Release\System.Runtime.InteropServices.RuntimeInformation\net45\System.Runtime.InteropServices.RuntimeInformation.pdb

PixbudLauncher.exe

mscoree

dotnet

costura.dll

mscoree

dotnet

costura.pdb

newtonsoft.json.dll

mscoree

dotnet

system.runtime.interopservices.runtimeinformation.dll

PE Signature issue

mscoree

dotnet