Overview
overview
3Static
static
3Yeis 1.5.rar
windows7-x64
1Yeis 1.5.rar
windows10-2004-x64
1Yeis 1.5/Guna.UI2.dll
windows7-x64
1Yeis 1.5/Guna.UI2.dll
windows10-2004-x64
1Yeis 1.5/M...s.json
windows7-x64
3Yeis 1.5/M...s.json
windows10-2004-x64
3Yeis 1.5/Memory.dll
windows7-x64
1Yeis 1.5/Memory.dll
windows10-2004-x64
1Yeis 1.5/M....nupkg
windows7-x64
3Yeis 1.5/M....nupkg
windows10-2004-x64
3Yeis 1.5/Memory.pdb
windows7-x64
3Yeis 1.5/Memory.pdb
windows10-2004-x64
3Yeis 1.5/Memory.xml
windows7-x64
3Yeis 1.5/Memory.xml
windows10-2004-x64
1Yeis 1.5/N...on.dll
windows7-x64
1Yeis 1.5/N...on.dll
windows10-2004-x64
1Yeis 1.5/N...on.xml
windows7-x64
3Yeis 1.5/N...on.xml
windows10-2004-x64
1Yeis 1.5/Yeis.exe
windows7-x64
1Yeis 1.5/Yeis.exe
windows10-2004-x64
1Yeis 1.5/e...config
windows7-x64
3Yeis 1.5/e...config
windows10-2004-x64
3Yeis 1.5/e...pp.pdb
windows7-x64
3Yeis 1.5/e...pp.pdb
windows10-2004-x64
3Static task
static1
Behavioral task
behavioral1
Sample
Yeis 1.5.rar
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Yeis 1.5.rar
Resource
win10v2004-20241007-en
Behavioral task
behavioral3
Sample
Yeis 1.5/Guna.UI2.dll
Resource
win7-20241010-en
Behavioral task
behavioral4
Sample
Yeis 1.5/Guna.UI2.dll
Resource
win10v2004-20241007-en
Behavioral task
behavioral5
Sample
Yeis 1.5/Memory.deps.json
Resource
win7-20241010-en
Behavioral task
behavioral6
Sample
Yeis 1.5/Memory.deps.json
Resource
win10v2004-20241007-en
Behavioral task
behavioral7
Sample
Yeis 1.5/Memory.dll
Resource
win7-20240708-en
Behavioral task
behavioral8
Sample
Yeis 1.5/Memory.dll
Resource
win10v2004-20241007-en
Behavioral task
behavioral9
Sample
Yeis 1.5/Memory.dll.x64.1.2.27.nupkg
Resource
win7-20240903-en
Behavioral task
behavioral10
Sample
Yeis 1.5/Memory.dll.x64.1.2.27.nupkg
Resource
win10v2004-20241007-en
Behavioral task
behavioral11
Sample
Yeis 1.5/Memory.pdb
Resource
win7-20240903-en
Behavioral task
behavioral12
Sample
Yeis 1.5/Memory.pdb
Resource
win10v2004-20241007-en
Behavioral task
behavioral13
Sample
Yeis 1.5/Memory.xml
Resource
win7-20240903-en
Behavioral task
behavioral14
Sample
Yeis 1.5/Memory.xml
Resource
win10v2004-20241007-en
Behavioral task
behavioral15
Sample
Yeis 1.5/Newtonsoft.Json.dll
Resource
win7-20240903-en
Behavioral task
behavioral16
Sample
Yeis 1.5/Newtonsoft.Json.dll
Resource
win10v2004-20241007-en
Behavioral task
behavioral17
Sample
Yeis 1.5/Newtonsoft.Json.xml
Resource
win7-20241023-en
Behavioral task
behavioral18
Sample
Yeis 1.5/Newtonsoft.Json.xml
Resource
win10v2004-20241007-en
Behavioral task
behavioral19
Sample
Yeis 1.5/Yeis.exe
Resource
win7-20240903-en
Behavioral task
behavioral20
Sample
Yeis 1.5/Yeis.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral21
Sample
Yeis 1.5/eu4formapp.exe.config
Resource
win7-20240903-en
Behavioral task
behavioral22
Sample
Yeis 1.5/eu4formapp.exe.config
Resource
win10v2004-20241007-en
Behavioral task
behavioral23
Sample
Yeis 1.5/eu4formapp.pdb
Resource
win7-20241010-en
Behavioral task
behavioral24
Sample
Yeis 1.5/eu4formapp.pdb
Resource
win10v2004-20241007-en
General
-
Target
Yeis 1.5.rar
-
Size
3.2MB
-
MD5
9ea39ff96d82d2cf813e16c7910e54b9
-
SHA1
b9f1f8f7ba5005ffad023808cc02dc8c24662222
-
SHA256
601a5853fbe96c1d11fec29a95dc9efcef2f457a8915e183c789f71848786bfc
-
SHA512
fe705625cddfaed5d6566bd79cbd69dd07d523c71ca2e0978f6ca6adddca1c6c30410dca075acf774a27fc81e9b1e9ca2cc783b4aa7a9c174c045da2570021b8
-
SSDEEP
98304:rEc3CyOEdmvvzdVO5ZlU6IgQjU7Db+CSh8acXAw7i:t7DE3O5ZlU6IPUHG8aQAwm
Malware Config
Signatures
-
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource unpack001/Yeis 1.5/Memory.dll unpack001/Yeis 1.5/Yeis.exe
Files
-
Yeis 1.5.rar.rar
-
Yeis 1.5/Guna.UI2.dll.dll windows:4 windows x86 arch:x86
dae02f32a21e03ce65412f6e56942daa
Code Sign
7a:98:1b:7d:3e:b4:86:bb:45:84:c4:3c:c9:a8:3f:dbCertificate
IssuerCN=Sobatdata Root CANot Before23/10/2019, 05:22Not After22/10/2025, 17:00SubjectCN=Sobatdata Software0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5aCertificate
IssuerCN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=USNot Before01/08/2022, 00:00Not After09/11/2031, 23:59SubjectCN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=USKey Usages
KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign
07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5bCertificate
IssuerCN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=USNot Before23/03/2022, 00:00Not After22/03/2037, 23:59SubjectCN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=USExtended Key Usages
ExtKeyUsageTimeStamping
Key Usages
KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign
05:44:af:f3:94:9d:08:39:a6:bf:db:3f:5f:e5:61:16Certificate
IssuerCN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=USNot Before14/07/2023, 00:00Not After13/10/2034, 23:59SubjectCN=DigiCert Timestamp 2023,O=DigiCert\, Inc.,C=USExtended Key Usages
ExtKeyUsageTimeStamping
Key Usages
KeyUsageDigitalSignature
47:b4:cf:f5:c2:a1:e0:36:e9:3f:b8:c2:44:a0:df:33:c2:26:10:62Signer
Actual PE Digest47:b4:cf:f5:c2:a1:e0:36:e9:3f:b8:c2:44:a0:df:33:c2:26:10:62Digest Algorithmsha1PE Digest MatchestrueHeaders
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
Imports
mscoree
_CorDllMain
Sections
.text Size: 2.1MB - Virtual size: 2.1MB
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
-
Yeis 1.5/Memory.deps.json
-
Yeis 1.5/Memory.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\memory-dll\Memory\obj\x64\Debug\netstandard2.0\Memory.pdb
Imports
mscoree
_CorDllMain
Sections
.text Size: 40KB - Virtual size: 40KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 4KB - Virtual size: 4KB
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
-
Yeis 1.5/Memory.dll.x64.1.2.27.nupkg.nupkg
-
Yeis 1.5/Memory.pdb
-
Yeis 1.5/Memory.xml.xml
-
Yeis 1.5/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:e6:20Certificate
IssuerCN=DigiCert CS RSA4096 Root G5,O=DigiCert\, Inc.,C=USNot Before15/01/2021, 00:00Not After14/01/2046, 23:59SubjectCN=DigiCert CS RSA4096 Root G5,O=DigiCert\, Inc.,C=USKey Usages
KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign
0a:de:32:e9:50:9b:44:aa:34:b1:da:f1:bc:0e:c8:73Certificate
IssuerCN=DigiCert CS RSA4096 Root G5,O=DigiCert\, Inc.,C=USNot Before15/07/2021, 00:00Not After14/07/2031, 23:59SubjectCN=.NET Foundation Projects Code Signing CA2,O=.NET Foundation,C=USExtended Key Usages
ExtKeyUsageCodeSigning
Key Usages
KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign
0c:d1:40:7a:5a:bd:ed:43:d5:c1:73:12:1d:38:c5:29Certificate
IssuerCN=.NET Foundation Projects Code Signing CA2,O=.NET Foundation,C=USNot Before13/08/2021, 00:00Not After29/10/2024, 23:59SubjectSERIALNUMBER=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=#131450726976617465204f7267616e697a6174696f6eExtended Key Usages
ExtKeyUsageCodeSigning
Key Usages
KeyUsageDigitalSignature
0c:4d:69:72:4b:94:fa:3c:2a:4a:3d:29:07:80:3d:5aCertificate
IssuerCN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=USNot Before21/09/2022, 00:00Not After21/11/2033, 23:59SubjectCN=DigiCert Timestamp 2022 - 2,O=DigiCert,C=USExtended Key Usages
ExtKeyUsageTimeStamping
Key Usages
KeyUsageDigitalSignature
07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5bCertificate
IssuerCN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=USNot Before23/03/2022, 00:00Not After22/03/2037, 23:59SubjectCN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=USExtended Key Usages
ExtKeyUsageTimeStamping
Key Usages
KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign
0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5aCertificate
IssuerCN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=USNot Before01/08/2022, 00:00Not After09/11/2031, 23:59SubjectCN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=USKey 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:9bSigner
Actual PE Digest38:27:11: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:9bDigest Algorithmsha256PE Digest MatchestrueHeaders
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
-
Yeis 1.5/Newtonsoft.Json.xml.xml
-
Yeis 1.5/Yeis.exe.exe windows:4 windows x64 arch:x64
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
Sections
${H$g+Y Size: 2.1MB - Virtual size: 2.1MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.text Size: 77KB - Virtual size: 76KB
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
-
Yeis 1.5/eu4formapp.exe.config
-
Yeis 1.5/eu4formapp.pdb