zen[.]installer[.]exe

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General

Target
zen.installer.exe
Size 90.2MB
Sample260705-2kq5bsf161
SHA256 3b0056c395e6da3f80e245e43f37fc9fc97e333570580585ea0285a10f7bc219
MD5 91eeb9f717ce158d48a24d2c4aff0da9
SHA1 59cf104f4d952f2cec3cc945afd2f9560f32cd09
SHA512 c34fdfa375b8aaa6d71e79472d44565ac9441182c33d58050203953c449f46aa31e1e8c8bb5a24c41b386ef6f3e4f18a33f417edc0d327a14abc730ec486471d
SSDEEP 1572864:chNwKe3cXxC62QsvR04kUBq7OBcyEp5Qx5VuxXzsK3AxtI7AtYJ/V4v:AN9i0x92QsvRiUw1l+5UegAw6YV4v
TLSH
T1C12833DC1D6FCD29E80D7F35B919ED636B3E2E365D24264E04FAB212958109BF538A0C
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 90.2MB
out.upx

.exe 188KB

zen.installer.exe

SHA256 3b0056c395e6da3f80e245e43f37fc9fc97e333570580585ea0285a10f7bc219
MD5 91eeb9f717ce158d48a24d2c4aff0da9
SHA1 59cf104f4d952f2cec3cc945afd2f9560f32cd09
SHA512 c34fdfa375b8aaa6d71e79472d44565ac9441182c33d58050203953c449f46aa31e1e8c8bb5a24c41b386ef6f3e4f18a33f417edc0d327a14abc730ec486471d
SSDEEP 1572864:chNwKe3cXxC62QsvR04kUBq7OBcyEp5Qx5VuxXzsK3AxtI7AtYJ/V4v:AN9i0x92QsvRiUw1l+5UegAw6YV4v
TLSH
T1C12833DC1D6FCD29E80D7F35B919ED636B3E2E365D24264E04FAB212958109BF538A0C
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

14:05:c4:cb:ca:b1:a8:aa:f1:c3:cc:17:08:0f:12:f5:a5:64:30:f7:45:1e:f1:c3:b9:91:14:aa:ef:9e:53:75

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 2, 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

Revocation Status

Not revoked

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

Revocation Status

Not revoked

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

Revocation Status

Not revoked

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

Revocation Status

Not revoked

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

Revocation Status

Not revoked

Timespan

Nov 15, 2025 - Sep 3, 2026

Minor OS version

Major OS version

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

Major OS version

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