phantom_stealer | file[.]exe

resource	yara_rule
sample	family_phantomstealer

resource	yara_rule
sample	costura

resource
file.exe
unpack001/costura.dll
unpack001/icsharpcode.sharpziplib.dll

file.exe

IMPHASH f34d5f2d4577ed6d9ceec516c1f5a744
SHA256 3feb5b6941b766f05d36adc9e2de9a3f631e9722d4bf083c2de4c0d5ff5208e2
MD5 4e2b713333af326c9a2bf8a35921b67b
SHA1 2e2e91c941f136eecb4ebfcd3e279aabca6a095b
SHA512 9aa2ac80ac2527f312e287d3f84d6d337b16952da23f0ab8b37028cd43d464317c4013ea33a770248928a5d7bb93d82abb890affdb9f262725081a079f82e88c
SSDEEP 12288:T9WXbMskTPr6NcUkqjVnl36ud0zR/6CtQ9PUHIG8DXjAGq2amJYeQab+3NUW6:T9WXMr6NcUkqjVnlqud+/2P+ATAS/JY
TLSH
T144F4DF58B3F85A00F1FF5BB194B59D51AB35B513A962D71E11C080D80EB2B918F8AF3B
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Detects PhantomStealer written in C#
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

0

Major OS version

4

Entry point

755966

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

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

Detects PhantomStealer written in C#
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

0

Major OS version

4

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

costura.pdb

SHA256 89b13aa6efbc0b04745a00bb5fcf05b7a4e3537095bde974ed3490a9cf582d17
MD5 34b42a5776a3ad022b429124d55e576d
SHA1 6c6000a5eaf8579850ab82a89bd6268776eb51ad
SHA512 c24bf10e1d95a07fcd65c1f7841d2d4bdf25c5db02f5f4912286c8d6c077fe8bd3fc564cb249cb4ae01aed10889f25cc22a48bd9698499ed556560d0621a64f4
TLSH
T1F35193776F04C291ED9884B28513DA492B3047127602EE7AE9E51B05CCFFDF8077286B
MD5 SHA1 SHA512 TLSH

Detects PhantomStealer written in C#
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

icsharpcode.sharpziplib.dll

IMPHASH dae02f32a21e03ce65412f6e56942daa
SHA256 c287e9b07a8251828f35914364c89a37db606b0c1d64457f9eb8fa2258f0dee3
MD5 d59ef46a5f01ddfe7eb691e6c725a247
SHA1 edf2ab9ee284fa21dbb55e93d082848e800f068b
SHA512 8b5b622618ddc32695cef8f0744c548e5068a908794caeef3286f5a2f521ee2bdc91fb63e37ce211147dc1feb8777da1e029f0ae8c6dd04b061753832fea55db
SSDEEP 6144:E1uYsjrFIzmuxpOI/1MvCdRbpSISC8j7s:LIzm6pOIgvr7
TLSH
T1E0142924B7FC4A67F6BE97B8E475908087F5B9A6313EE75E5C0094EE1C56B6089003B3
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Detects PhantomStealer written in C#
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

0

Major OS version

4

Entry point

206806

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/ICSharpCode.SharpZipLib/obj/Release/net45/ICSharpCode.SharpZipLib.pdb

icsharpcode.sharpziplib.pdb

SHA256 cef7890c128fd3d563e0adea3bba414a66542c4563b745896ba4242f279dc6b9
MD5 779d8237c1bb0a2896b2b8415ab6e556
SHA1 797d83bfe6a654fe21916806e6ca7bcbb3b4c3fb
SHA512 6a687f380f025aaece6a4976b8717864d727e82222c600085b094b06f300557c787b6dbcfd254531ef39faec1f4a5e0c542f74dde4af076be48a7c32506db138
SSDEEP 1536:t5KTOVIrAQDWUKu5fO1UvJBbI53Sgwjgr5mbRRG7YZto3n0VGyW:t4TO2rLqJ1iWigw0uG7v08
TLSH
T121A3F71BD1ED872FC517213EC5B292057BB9C3BCD6878B06A3DCE778B84972845A3254
MD5 SHA1 SHA512 SSDEEP TLSH

Detects PhantomStealer written in C#
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

newtonsoft.json.dll

IMPHASH dae02f32a21e03ce65412f6e56942daa
SHA256 e1e27af7b07eeedf5ce71a9255f0422816a6fc5849a483c6714e1b472044fa9d
MD5 195ffb7167db3219b217c4fd439eedd6
SHA1 1e76e6099570ede620b76ed47cf8d03a936d49f8
SHA512 56eb7f070929b239642dab729537dde2c2287bdb852ad9e80b5358c74b14bc2b2dded910d0e3b6304ea27eb587e5f19db0a92e1cbae6a70fb20b4ef05057e4ac
SSDEEP 12288:GBja5bBvR8Q0TE2HB0WLmvXbsVG1Gw03RzxNHgKhwFBkjSHXP36RMGy1NqTUO:GBjk38WuBcAbwoA/BkjSHXP36RMG/
TLSH
T166E4394123F98F2BE1AF6B75B4704E1543F9F917A6B5E78F9A04D9A91C43B408E403A3
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Detects PhantomStealer written in C#
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

38:27:11:d0:35:02:fc:58:64:ae:1e:6c:cb:c5:eb:67:eb:5d:dc:c8:86:9e:e4:59:cc:0d:02:0e:5f:d1:fc:9b

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=Washington,C=US,1.3.6.1.4.1.311.60.2.1.2=#130a57617368696e67746f6e,1.3.6.1.4.1.311.60.2.1.3=#13025553,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e

Chains

Mar 8, 2023

SERIALNUMBER=603 389 068,CN=Json.NET (.NET Foundation),O=Json.NET (.NET Foundation),L=Redmond,ST=Washington,C=US,1.3.6.1.4.1.311.60.2.1.2=#130a57617368696e67746f6e,1.3.6.1.4.1.311.60.2.1.3=#13025553,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e

CN=.NET Foundation Projects Code Signing CA2,O=.NET Foundation,C=US

CN=DigiCert CS RSA4096 Root G5,O=DigiCert\, Inc.,C=US

Subject

CN=DigiCert CS RSA4096 Root G5,O=DigiCert\, Inc.,C=US

Serial Number

06:ce:e1:31:be:6d:55:c8:07:f7:c0:c7:fb:44:e6:20

Issuer

CN=DigiCert CS RSA4096 Root G5,O=DigiCert\, Inc.,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Timespan

Jan 15, 2021 - Jan 14, 2046

Subject

CN=.NET Foundation Projects Code Signing CA2,O=.NET Foundation,C=US

Serial Number

0a:de:32:e9:50:9b:44:aa:34:b1:da:f1:bc:0e:c8:73

Issuer

CN=DigiCert CS RSA4096 Root G5,O=DigiCert\, Inc.,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

Jul 15, 2021 - Jul 14, 2031

Subject

SERIALNUMBER=603 389 068,CN=Json.NET (.NET Foundation),O=Json.NET (.NET Foundation),L=Redmond,ST=Washington,C=US,1.3.6.1.4.1.311.60.2.1.2=#130a57617368696e67746f6e,1.3.6.1.4.1.311.60.2.1.3=#13025553,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e

Serial Number

0c:d1:40:7a:5a:bd:ed:43:d5:c1:73:12:1d:38:c5:29

Issuer

CN=.NET Foundation Projects Code Signing CA2,O=.NET Foundation,C=US

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

Aug 13, 2021 - Oct 29, 2024

Subject

CN=DigiCert Timestamp 2022 - 2,O=DigiCert,C=US

Serial Number

0c:4d:69:72:4b:94:fa:3c:2a:4a:3d:29:07:80:3d:5a

Issuer

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

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageTimeStamping

Revocation Status

Not revoked

Timespan

Sep 21, 2022 - Nov 21, 2033

Subject

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

Serial Number

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

Issuer

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

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageTimeStamping

Revocation Status

Not revoked

Timespan

Mar 23, 2022 - Mar 22, 2037

Subject

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

Serial Number

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

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

Aug 1, 2022 - Nov 9, 2031

Minor OS version

0

Major OS version

4

Entry point

704578

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.diagnostics.diagnosticsource.dll

IMPHASH dae02f32a21e03ce65412f6e56942daa
SHA256 d22133818a30313e0becf010d78a556a56b34ea361dbd33588c9817631fed540
MD5 8d9df432109f1cfdd86723b5f171e3d7
SHA1 85dc92edd4b0049ed9049e075c4def8a3d64e43b
SHA512 5c83303934eecfa61c43a071d29c98e5804d37a5dc7f7b035772d6a168b0c5e65dfabef20b46214e65493c4bda44831cafee83615498fbe9e718c884f4650edf
SSDEEP 384:iQobG82oiaPaf/gn5LQ0+0zdQUv2CtyW8fiFISWbW9pWJbWivT1Nq0GftpBjAvnC:nA299fI5dxzL2CC11vimvnEBBNFT
TLSH
T145F25B54EBAC8953DEE71D3062A4D9423A3AEB936C10C25E2699E18D0D83BD1EB11737
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

Detects PhantomStealer written in C#
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

d6:fb:4d:67:72:14:08:d2:75:46:a0:06:cb:be:f9:d3:5f:db:20:bd:97:db:cd:de:3c:cd:a0:78:2f:b1:93:7f

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

bc:c6:7a:ba:4c:c6:19:72:95:75:c0:52:c5:b2:9c:4b:5f:0f:69:2e

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:B1B7-F67F-FEC2,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

33:00:00:00:c9:64:4d:16:db:1a:7d:b3:15:00:00:00:00:00:c9

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:BBEC-30CA-2DBE,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Serial Number

33:00:00:00:a1:a5:fd:b9:ee:a7:fc:9e:9d:00:00:00:00:00:a1

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

0

Major OS version

4

Entry point

24690

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\AnyOS.AnyCPU.Release\System.Diagnostics.DiagnosticSource\System.Diagnostics.DiagnosticSource.pdb

file.exe

mscoree

dotnet

costura.dll

mscoree

dotnet

costura.pdb

icsharpcode.sharpziplib.dll

mscoree

dotnet

icsharpcode.sharpziplib.pdb

newtonsoft.json.dll

mscoree

dotnet

system.diagnostics.diagnosticsource.dll

PE Signature issue

mscoree

dotnet

Sharing

General

Malware Config

Extracted

Signatures

File Explorer

file.exe

mscoree

dotnet

costura.dll

mscoree

dotnet

costura.pdb

icsharpcode.sharpziplib.dll

mscoree

dotnet

icsharpcode.sharpziplib.pdb

newtonsoft.json.dll

mscoree

dotnet

system.diagnostics.diagnosticsource.dll

PE Signature issue

mscoree

dotnet