zen[.]installer[.]exe

General

Target
zen.installer.exe
Size 91.7MB
Sample260729-rx93vshr3x
SHA256 d64a89c7df07dfbdff23d73c19b23dfa5c852eab92c6156d9e20e18cfd826b27
MD5 5f3ebde6d612b0caa9338ddb53ceec53
SHA1 d78e8ccc7c5d19c668b943381146471f5059ed44
SHA512 f059c693c1ccfb5d162af1b262d6a120dac39057b7142fe3b9e4d9f883d755cf3b0503fe66f624b27bbc26dddf8cb7a1f85de5d0d3fd666008231722418eaf23
SSDEEP 1572864:Za2R2HQ7a5MtABliGclam0uJVNYGX8e+9fKeTyLKwAOxmY/ahLMsH:QW7skam0+7bHyKvWO83
TLSH
T1062833B2480C46BBF499273A9CF54E3BCA16A35B1501BFDDF1E7634D21B664EEE84402
MD5 SHA1 SHA512 SSDEEP TLSH

Score

5^/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

File Explorer

zen.installer.exe

.exe 91.7MB
out.upx

.exe 188KB

zen.installer.exe

SHA256 d64a89c7df07dfbdff23d73c19b23dfa5c852eab92c6156d9e20e18cfd826b27
MD5 5f3ebde6d612b0caa9338ddb53ceec53
SHA1 d78e8ccc7c5d19c668b943381146471f5059ed44
SHA512 f059c693c1ccfb5d162af1b262d6a120dac39057b7142fe3b9e4d9f883d755cf3b0503fe66f624b27bbc26dddf8cb7a1f85de5d0d3fd666008231722418eaf23
SSDEEP 1572864:Za2R2HQ7a5MtABliGclam0uJVNYGX8e+9fKeTyLKwAOxmY/ahLMsH:QW7skam0+7bHyKvWO83
TLSH
T1062833B2480C46BBF499273A9CF54E3BCA16A35B1501BFDDF1E7634D21B664EEE84402
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

UPX packed file

Detects executables packed with UPX/modified UPX open source packer.

upx

Digest

6d:c5:42:db:7f:e9:82:7a:c3:8c:e0:51:5c:00:88:f9:c3:11:11:2e:69:bf:b9:38:13:05:c5:a6:0e:ee:a4:79

Digest Algorithm

sha256

PE Digests Matches

Trusted

Signing Certificate

CN=Open Source Developer\, OSCAR GONZALEZ MORENO,O=Open Source Developer,L=Valdemorillo,ST=Madrid,C=ES

Chains

Jul 25, 2026

CN=Open Source Developer\, OSCAR GONZALEZ MORENO,O=Open Source Developer,L=Valdemorillo,ST=Madrid,C=ES

CN=Certum Code Signing 2021 CA,O=Asseco Data Systems S.A.,C=PL

CN=Certum Trusted Network CA 2,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL

CN=Open Source Developer\, OSCAR GONZALEZ MORENO,O=Open Source Developer,L=Valdemorillo,ST=Madrid,C=ES

CN=Certum Code Signing 2021 CA,O=Asseco Data Systems S.A.,C=PL

CN=Certum Trusted Network CA 2,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL

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

Subject

CN=Certum Trusted Network CA 2,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL

Serial Number

1b:b5:8f:25:2a:df:23:00:49:28:c9:ae:3d:7e:ed:27

Issuer

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

Key Usages

KeyUsageCertSign, KeyUsageCRLSign

Timespan

May 31, 2021 - Sep 17, 2029

Subject

CN=Certum Timestamp 2026,O=Asseco Data Systems S.A.,C=PL

Serial Number

28:f0:77:c1:1c:36:bd:fe:5f:74:32:47:70:27:2e:03

Issuer

CN=Certum Timestamping 2021 CA,O=Asseco Data Systems S.A.,C=PL

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageTimeStamping

Timespan

Mar 11, 2026 - Feb 27, 2036

Subject

CN=Certum Code Signing 2021 CA,O=Asseco Data Systems S.A.,C=PL

Serial Number

99:a3:80:0a:26:55:3b:65:ab:dc:6e:84:a6:b3:ea:39

Issuer

CN=Certum Trusted Network CA 2,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL

Key Usages

KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageCodeSigning

Timespan

May 19, 2021 - May 18, 2036

Subject

CN=Certum Timestamping 2021 CA,O=Asseco Data Systems S.A.,C=PL

Serial Number

e7:ff:69:c7:3b:35:ce:4b:91:26:d8:74:7c:68:a5:87

Issuer

CN=Certum Trusted Network CA 2,OU=Certum Certification Authority,O=Unizeto Technologies S.A.,C=PL

Key Usages

KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageTimeStamping

Timespan

May 19, 2021 - May 18, 2036

Subject

CN=Open Source Developer\, OSCAR GONZALEZ MORENO,O=Open Source Developer,L=Valdemorillo,ST=Madrid,C=ES

Serial Number

44:d2:cc:80:83:09:69:d2:b3:cf:7e:e2:f2:4c:88:74

Issuer

CN=Certum Code Signing 2021 CA,O=Asseco Data Systems S.A.,C=PL

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageCodeSigning

Timespan

Nov 15, 2025 - Sep 3, 2026

Minor OS version

0

Major OS version

4

Entry point

216992

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_32BIT_MACHINE

PDB paths

out.upx

SHA256 d010265be33ead064c15604dcf5e90bf9f0608585eb9a04171294941e14a95a2
MD5 2a779706848199e597315870c4b077d4
SHA1 48c674022d55ddb45d741c9c901204471ac973c7
SHA512 b092be4b0276c4fdc95ffa9635ae7be9b7babb0d3aa99bf9b6e17b8d53fc3351b1e0934ffc19639da89e580f028c5e9c38a2e78f84a071ddb546e619cf41889c
SSDEEP 3072:488bdXF8FtO5dyzEAKZ/hx7c3unn+b09CIWncYodntK+C7VieM3SFZNt9ckP:XsdXFryQfP7nn+b0AvncfdwX3MmIO
TLSH
T14414AE323AD5C8FAD2532271CB49B7EAE1FADB180814493323142E5D7FBE846931D61E
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x86 arch:x86

UPX packed file

Detects executables packed with UPX/modified UPX open source packer.

upx
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

0

Major OS version

4

Entry point

106406

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_32BIT_MACHINE

PDB paths

zen.installer.exe

generic

out.upx

generic

Sharing

General

Malware Config

Signatures

File Explorer

zen.installer.exe

generic

out.upx

generic