MicrosoftOffice_InstallationComponent_zywz_a02[.]exe

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General

Target

MicrosoftOffice_InstallationComponent_zywz_a02.exe
Size

5.1MB
MD5

d4a41ada830c1749cb83d764727049d8
SHA1

cb9eed5c2e75372a37073fdc47fcf741c998defd
SHA256

4b7ce9d3c9b837e90f0f454062c29baed42c95af0a174849da9800d1e4d9fbd2
SHA512

f39d0f9e9d9fd0625dac4e39440bfb8323cc16c9af059a3f5af889d70dbc1105724687ce65403d719ed722f03d0f2e8a3267677298060d04b7fe8045138b075a
SSDEEP

98304:yEIsjdKJmKcDEmGCSgCwDyHZelJyD+xSka3JGFeXYgBBvSsFsO5:emKJSE9gCw5lJy6FveXZGHO5

Score

8^/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

Files

MicrosoftOffice_InstallationComponent_zywz_a02.exe
.exe windows x86

Code Sign

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

Issuer

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

Not Before

10/11/2006, 00:00

Not After

10/11/2031, 00:00

Subject

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

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

06:07:35:2a:f8:8b:c6:7b:29:13:38:ae:14:4d:96:fe
Certificate

Issuer

CN=DigiCert EV Code Signing CA (SHA2),OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

29/04/2020, 00:00

Not After

03/05/2022, 12:00

Subject

SERIALNUMBER=91110108MA01HJP36T,CN=Beijing Yundong Zhixiao Network Technology Co. \, Ltd.,O=Beijing Yundong Zhixiao Network Technology Co. \, Ltd.,ST=Beijing,C=CN,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.2=#13074265696a696e67,1.3.6.1.4.1.311.60.2.1.3=#1302434e

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

03:f1:b4:e1:5f:3a:82:f1:14:96:78:b3:d7:d8:47:5c
Certificate

Issuer

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

Not Before

18/04/2012, 12:00

Not After

18/04/2027, 12:00

Subject

CN=DigiCert EV Code Signing CA (SHA2),OU=www.digicert.com,O=DigiCert Inc,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12
Certificate

Issuer

CN=VeriSign Universal Root Certification Authority,OU=VeriSign Trust Network+OU=(c) 2008 VeriSign\, Inc. - For authorized use only,O=VeriSign\, Inc.,C=US

Not Before

12/01/2016, 00:00

Not After

11/01/2031, 23:59

Subject

CN=Symantec SHA256 TimeStamping CA,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

7b:d4:e5:af:ba:cc:07:3f:a1:01:23:04:22:41:4d:12
Certificate

Issuer

CN=Symantec SHA256 TimeStamping CA,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Not Before

23/12/2017, 00:00

Not After

22/03/2029, 23:59

Subject

CN=Symantec SHA256 TimeStamping Signer - G3,OU=Symantec Trust Network,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

f5:9f:e1:62:2c:23:5b:02:e6:e4:73:46:53:0f:00:85:13:f3:e2:99:e9:67:41:58:b2:14:3d:11:fc:23:77:a5
Signer

Actual PE Digest

f5:9f:e1:62:2c:23:5b:02:e6:e4:73:46:53:0f:00:85:13:f3:e2:99:e9:67:41:58:b2:14:3d:11:fc:23:77:a5

Digest Algorithm

sha256

PE Digest Matches

true

Signature Validations

Trusted

true

Verification

Signing Certificate

SERIALNUMBER=91110108MA01HJP36T,CN=Beijing Yundong Zhixiao Network Technology Co. \, Ltd.,O=Beijing Yundong Zhixiao Network Technology Co. \, Ltd.,ST=Beijing,C=CN,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.2=#13074265696a696e67,1.3.6.1.4.1.311.60.2.1.3=#1302434e

08/04/2022, 11:48
Valid: true

Chain 1

SERIALNUMBER=91110108MA01HJP36T,CN=Beijing Yundong Zhixiao Network Technology Co. \, Ltd.,O=Beijing Yundong Zhixiao Network Technology Co. \, Ltd.,ST=Beijing,C=CN,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.2=#13074265696a696e67,1.3.6.1.4.1.311.60.2.1.3=#1302434e

CN=DigiCert EV Code Signing CA (SHA2),OU=www.digicert.com,O=DigiCert Inc,C=US

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

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Sections

UPX0
Size: - Virtual size: 7.2MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 5.1MB - Virtual size: 5.1MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 69KB - Virtual size: 72KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

Files

Code Sign

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

Key Usages

06:07:35:2a:f8:8b:c6:7b:29:13:38:ae:14:4d:96:feCertificate

Extended Key Usages

Key Usages

03:f1:b4:e1:5f:3a:82:f1:14:96:78:b3:d7:d8:47:5cCertificate

Extended Key Usages

Key Usages

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12Certificate

Extended Key Usages

Key Usages

7b:d4:e5:af:ba:cc:07:3f:a1:01:23:04:22:41:4d:12Certificate

Extended Key Usages

Key Usages

f5:9f:e1:62:2c:23:5b:02:e6:e4:73:46:53:0f:00:85:13:f3:e2:99:e9:67:41:58:b2:14:3d:11:fc:23:77:a5Signer

Signature Validations

Verification

08/04/2022, 11:48 Valid: true

Chain 1

Headers

DLL Characteristics

File Characteristics

Sections

UPX0 Size: - Virtual size: 7.2MB

UPX1 Size: 5.1MB - Virtual size: 5.1MB

.rsrc Size: 69KB - Virtual size: 72KB

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

06:07:35:2a:f8:8b:c6:7b:29:13:38:ae:14:4d:96:fe
Certificate

03:f1:b4:e1:5f:3a:82:f1:14:96:78:b3:d7:d8:47:5c
Certificate

7b:05:b1:d4:49:68:51:44:f7:c9:89:d2:9c:19:9d:12
Certificate

7b:d4:e5:af:ba:cc:07:3f:a1:01:23:04:22:41:4d:12
Certificate

f5:9f:e1:62:2c:23:5b:02:e6:e4:73:46:53:0f:00:85:13:f3:e2:99:e9:67:41:58:b2:14:3d:11:fc:23:77:a5
Signer

08/04/2022, 11:48
Valid: true

UPX0
Size: - Virtual size: 7.2MB

UPX1
Size: 5.1MB - Virtual size: 5.1MB

.rsrc
Size: 69KB - Virtual size: 72KB