joyo_sign[.]exe

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General

Target

joyo_sign.exe
Size

4.6MB
MD5

caf4884072724f1d75a6288f27e8e8fe
SHA1

b4069e65384241993425287712061e3ddc515153
SHA256

ecc311fcf3884ead2e5614baedfe412e6d797d044df005dff2fae86f9c80d63a
SHA512

82bb1a49089febe84ed6d429ad9aba5afcff4de3199e4505d9dcbedaa6739d37cca582553fc5c52baf22281961b0cd23f2578deee8459b5b32806c0e7fa55abc
SSDEEP

98304:hJgD8T77BGzXeeyRR/4Wz2NzOyadHRrbNLfPVJvpw:hVT77BGzufXwm2NaLPbZpw

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

joyo_sign.exe
.exe windows x64

Code Sign

62:f8:12:a3:5f:52:bd:74:b7:18:d6:10:ac:4b:47:83
Certificate

Issuer

CN=Certum Trusted Network CA,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL

Not Before

11/09/2018, 09:28

Not After

11/09/2023, 09:28

Subject

CN=SSL.com EV Root Certification Authority RSA R2,O=SSL Corporation,L=Houston,ST=Texas,C=US

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

42:4b:6a:53:ce:c7:66:14:1c:2a:63:b1:a5:1c:41:04
Certificate

Issuer

CN=SSL.com EV Root Certification Authority RSA R2,O=SSL Corporation,L=Houston,ST=Texas,C=US

Not Before

26/03/2019, 17:44

Not After

22/03/2034, 17:44

Subject

CN=SSL.com EV Code Signing Intermediate CA RSA R3,O=SSL Corp,L=Houston,ST=Texas,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

78:55:9d:9a:1e:2f:c1:a4:79:d6:27:68:4d:11:3a:59
Certificate

Issuer

CN=SSL.com EV Code Signing Intermediate CA RSA R3,O=SSL Corp,L=Houston,ST=Texas,C=US

Not Before

19/08/2021, 19:03

Not After

18/08/2024, 19:03

Subject

SERIALNUMBER=C 86211,CN=JetBrains s.r.o.,O=JetBrains s.r.o.,L=Prague,C=CZ,1.3.6.1.4.1.311.60.2.1.3=#1302435a,1.3.6.1.4.1.311.60.2.1.2=#1306507261677565,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

1a:d6:08:a7:d6:34:b5:cd:de:97:cb:a3:cc:f0:d0:4b
Certificate

Issuer

CN=SSL.com Timestamping Issuing RSA CA R1,O=SSL Corp,L=Houston,ST=Texas,C=US

Not Before

09/12/2022, 18:30

Not After

06/12/2032, 18:30

Subject

CN=SSL.com Timestamping Unit 2022,O=SSL Corp,L=Houston,ST=Texas,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

e4:27:04:95:f6:8c:91:d6:d0:ec:7b:49:4e:a4:df:1c
Certificate

Issuer

CN=Certum Trusted Network CA,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL

Not Before

11/09/2018, 09:26

Not After

11/09/2023, 09:26

Subject

CN=SSL.com Root Certification Authority RSA,O=SSL Corporation,L=Houston,ST=Texas,C=US

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

6d:52:18:70:87:e8:23:4d:85:60:00:d0:80:8f:93:56
Certificate

Issuer

CN=SSL.com Root Certification Authority RSA,O=SSL Corporation,L=Houston,ST=Texas,C=US

Not Before

13/11/2019, 18:50

Not After

12/11/2034, 18:50

Subject

CN=SSL.com Timestamping Issuing RSA CA R1,O=SSL Corp,L=Houston,ST=Texas,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

2e:81:1b:ab:d7:1b:f6:df:45:78:f8:58:28:b9:39:7d:cb:e4:72:85:71:d0:3a:4e:db:5a:b4:df:1f:6c:b1:20
Signer

Actual PE Digest

2e:81:1b:ab:d7:1b:f6:df:45:78:f8:58:28:b9:39:7d:cb:e4:72:85:71:d0:3a:4e:db:5a:b4:df:1f:6c:b1:20

Digest Algorithm

sha256

PE Digest Matches

false

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED

Sections

UPX0
Size: - Virtual size: 9.5MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 4.6MB - Virtual size: 4.6MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 1KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
out.upx
.exe windows x64

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED

Exports

Exports

_cgo_dummy_export
authorizerTrampoline
callbackTrampoline
commitHookTrampoline
compareTrampoline
doneTrampoline
preUpdateHookTrampoline
rollbackHookTrampoline
stepTrampoline
updateHookTrampoline

Sections

.text
Size: 8.7MB - Virtual size: 8.7MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 268KB - Virtual size: 268KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 4.5MB - Virtual size: 4.5MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.pdata
Size: 24KB - Virtual size: 24KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.xdata
Size: 27KB - Virtual size: 27KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 397KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.edata
Size: 512B - Virtual size: 345B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.idata
Size: 7KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.CRT
Size: 512B - Virtual size: 112B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: 512B - Virtual size: 16B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 105KB - Virtual size: 105KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

Code Sign

62:f8:12:a3:5f:52:bd:74:b7:18:d6:10:ac:4b:47:83Certificate

Key Usages

42:4b:6a:53:ce:c7:66:14:1c:2a:63:b1:a5:1c:41:04Certificate

Extended Key Usages

Key Usages

78:55:9d:9a:1e:2f:c1:a4:79:d6:27:68:4d:11:3a:59Certificate

Extended Key Usages

Key Usages

1a:d6:08:a7:d6:34:b5:cd:de:97:cb:a3:cc:f0:d0:4bCertificate

Extended Key Usages

Key Usages

e4:27:04:95:f6:8c:91:d6:d0:ec:7b:49:4e:a4:df:1cCertificate

Key Usages

6d:52:18:70:87:e8:23:4d:85:60:00:d0:80:8f:93:56Certificate

Extended Key Usages

Key Usages

2e:81:1b:ab:d7:1b:f6:df:45:78:f8:58:28:b9:39:7d:cb:e4:72:85:71:d0:3a:4e:db:5a:b4:df:1f:6c:b1:20Signer

Headers

DLL Characteristics

File Characteristics

Sections

UPX0 Size: - Virtual size: 9.5MB

UPX1 Size: 4.6MB - Virtual size: 4.6MB

.rsrc Size: 1KB - Virtual size: 4KB

Headers

DLL Characteristics

File Characteristics

Exports

Exports

Sections

.text Size: 8.7MB - Virtual size: 8.7MB

.data Size: 268KB - Virtual size: 268KB

.rdata Size: 4.5MB - Virtual size: 4.5MB

.pdata Size: 24KB - Virtual size: 24KB

.xdata Size: 27KB - Virtual size: 27KB

.bss Size: - Virtual size: 397KB

.edata Size: 512B - Virtual size: 345B

.idata Size: 7KB - Virtual size: 6KB

.CRT Size: 512B - Virtual size: 112B

.tls Size: 512B - Virtual size: 16B

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

.reloc Size: 105KB - Virtual size: 105KB

62:f8:12:a3:5f:52:bd:74:b7:18:d6:10:ac:4b:47:83
Certificate

42:4b:6a:53:ce:c7:66:14:1c:2a:63:b1:a5:1c:41:04
Certificate

78:55:9d:9a:1e:2f:c1:a4:79:d6:27:68:4d:11:3a:59
Certificate

1a:d6:08:a7:d6:34:b5:cd:de:97:cb:a3:cc:f0:d0:4b
Certificate

e4:27:04:95:f6:8c:91:d6:d0:ec:7b:49:4e:a4:df:1c
Certificate

6d:52:18:70:87:e8:23:4d:85:60:00:d0:80:8f:93:56
Certificate

2e:81:1b:ab:d7:1b:f6:df:45:78:f8:58:28:b9:39:7d:cb:e4:72:85:71:d0:3a:4e:db:5a:b4:df:1f:6c:b1:20
Signer

UPX0
Size: - Virtual size: 9.5MB

UPX1
Size: 4.6MB - Virtual size: 4.6MB

.rsrc
Size: 1KB - Virtual size: 4KB

.text
Size: 8.7MB - Virtual size: 8.7MB

.data
Size: 268KB - Virtual size: 268KB

.rdata
Size: 4.5MB - Virtual size: 4.5MB

.pdata
Size: 24KB - Virtual size: 24KB

.xdata
Size: 27KB - Virtual size: 27KB

.bss
Size: - Virtual size: 397KB

.edata
Size: 512B - Virtual size: 345B

.idata
Size: 7KB - Virtual size: 6KB

.CRT
Size: 512B - Virtual size: 112B

.tls
Size: 512B - Virtual size: 16B

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

.reloc
Size: 105KB - Virtual size: 105KB