NexusFN[.]zip | Triage

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General

Target

NexusFN.zip
Size

368KB
MD5

9ba239ecc8e92e5888e09de7e3cbc4aa
SHA1

49704857b1a0632dfcee32c99903a451c6eaed65
SHA256

b786f496d055f6239e258febb90d3e8111157d80eee4c37194c1af8cb1877fc0
SHA512

336c481ea9631bc005c3fd57612a4d3dcab855b3cb9f38579d52dd47f7861969faa0ee4584453d6f46d1c0a53a6c15e3eab48bc3ef100f6475ec8a50866afd4c
SSDEEP

6144:qQNKJTKYwM3EgE9nIwEAA4XXUzmJ5B1iZ5G2r1Npv/xYizPso8p2MQPusS3g76WO:jITf936jAMwOiZ5G41vv/xYgPsB2MsuN

Score

3^/10

Malware Config

Signatures

Unsigned PE 3 IoCs

Checks for missing Authenticode signature.

resource
unpack001/NexusFN/Colorful.Console.dll
unpack001/NexusFN/Leaf.xNet.dll
unpack001/NexusFN/NexusFN.exe

Files

NexusFN.zip
.zip
NexusFN/Colorful.Console.dll
.dll windows:4 windows x86 arch:x86

dae02f32a21e03ce65412f6e56942daa

Headers

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:\projects\colorful-console\src\Colorful.Console\obj\Debug\net461\Colorful.Console.pdb

Imports

mscoree

_CorDllMain

Sections

.text
Size: 86KB - Virtual size: 86KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rsrc
Size: 1024B - Virtual size: 992B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 12B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
NexusFN/Leaf.xNet.dll
.dll windows:4 windows x86 arch:x86

dae02f32a21e03ce65412f6e56942daa

Headers

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:\projects\leaf-xnet\Leaf.xNet\obj\Release\net45\Leaf.xNet.pdb

Imports

mscoree

_CorDllMain

Sections

.text
Size: 127KB - Virtual size: 126KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rsrc
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 12B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
NexusFN/Newtonsoft.Json.dll
.dll windows:4 windows x86 arch:x86

dae02f32a21e03ce65412f6e56942daa

Code Sign

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

Issuer

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

Not Before

15/01/2021, 00:00

Not After

14/01/2046, 23:59

Subject

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

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

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

Issuer

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

Not Before

15/07/2021, 00:00

Not After

14/07/2031, 23:59

Subject

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

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

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

Issuer

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

Not Before

13/08/2021, 00:00

Not After

29/10/2024, 23:59

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

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

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

Issuer

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

Not Before

21/09/2022, 00:00

Not After

21/11/2033, 23:59

Subject

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

Extended Key Usages

ExtKeyUsageTimeStamping

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

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
Signer

Actual PE 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 Digest Matches

true

Headers

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

Imports

mscoree

_CorDllMain

Sections

.text
Size: 681KB - Virtual size: 680KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rsrc
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 12B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
NexusFN/NexusFN.exe
.exe windows:4 windows x86 arch:x86

f34d5f2d4577ed6d9ceec516c1f5a744

Headers

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

PDB Paths

C:\Users\heybr\Desktop\nexusfn\NexusFN\bin\Debug\NexusFN.pdb

Imports

mscoree

_CorExeMain

Sections

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

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rsrc
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 12B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
NexusFN/password.txt

Sharing

General

Malware Config

Signatures

Files

dae02f32a21e03ce65412f6e56942daa

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

mscoree

Sections

.text Size: 86KB - Virtual size: 86KB

.rsrc Size: 1024B - Virtual size: 992B

.reloc Size: 512B - Virtual size: 12B

dae02f32a21e03ce65412f6e56942daa

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

mscoree

Sections

.text Size: 127KB - Virtual size: 126KB

.rsrc Size: 1KB - Virtual size: 1KB

.reloc Size: 512B - Virtual size: 12B

dae02f32a21e03ce65412f6e56942daa

Code Sign

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

Key Usages

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

Extended Key Usages

Key Usages

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

Extended Key Usages

Key Usages

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

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

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:9bSigner

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

mscoree

Sections

.text Size: 681KB - Virtual size: 680KB

.rsrc Size: 1KB - Virtual size: 1KB

.reloc Size: 512B - Virtual size: 12B

f34d5f2d4577ed6d9ceec516c1f5a744

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

mscoree

Sections

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

.rsrc Size: 1KB - Virtual size: 1KB

.reloc Size: 512B - Virtual size: 12B

.text
Size: 86KB - Virtual size: 86KB

.rsrc
Size: 1024B - Virtual size: 992B

.reloc
Size: 512B - Virtual size: 12B

.text
Size: 127KB - Virtual size: 126KB

.rsrc
Size: 1KB - Virtual size: 1KB

.reloc
Size: 512B - Virtual size: 12B

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

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

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

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

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
Signer

.text
Size: 681KB - Virtual size: 680KB

.rsrc
Size: 1KB - Virtual size: 1KB

.reloc
Size: 512B - Virtual size: 12B

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

.rsrc
Size: 1KB - Virtual size: 1KB

.reloc
Size: 512B - Virtual size: 12B