zen[.]installer[.]exe

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General

Target

zen.installer.exe
Size

63.9MB
MD5

721941ddad5cfad76281f8659b5223d1
SHA1

28730badf1425c5eb58375ac196a15836cccc2ac
SHA256

63489508238e2a85d250df003a630ecb2fbc201f56f5cf5311bd88b9eab50f62
SHA512

57bd878ebf48e308df6fb980fe4b5667a533e4660e29c101d0e24abc682a2dbaa1f04ecca1818c0676ae05c0afb610a82e02e9d829cce8949ba312272fa12541
SSDEEP

1572864:Ng4brSAkvbycK5MOMDMnZQinqxlUv9zmP22MAEYQmQiXcws4:d/FkvucKaOM4ZTnqxav98TWmQgcws4

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

Files

zen.installer.exe
.exe windows:4 windows x86 arch:x86

Code Sign

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

Issuer

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

Not Before

31/05/2021, 06:43

Not After

17/09/2029, 06:43

Subject

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

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

38:a4:53:47:a4:8f:7b:eb:0d:e1:d6:4e:1a:a2:1b:10
Certificate

Issuer

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

Not Before

09/09/2024, 05:33

Not After

09/09/2025, 05:33

Subject

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

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

09:c5:cc:f8:bb:66:7d:71:37:aa:c1:59:80:06:cb:31
Certificate

Issuer

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

Not Before

02/11/2023, 08:32

Not After

30/10/2034, 08:32

Subject

CN=Certum Timestamp 2023,O=Asseco Data Systems S.A.,C=PL

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

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

Issuer

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

Not Before

19/05/2021, 05:32

Not After

18/05/2036, 05:32

Subject

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

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

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

Issuer

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

Not Before

19/05/2021, 05:32

Not After

18/05/2036, 05:32

Subject

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

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

da:df:60:d7:f2:f4:d7:71:08:4e:76:4e:e2:d1:a7:df:b8:b0:8f:46:b1:61:09:f2:b3:fe:8c:bd:ea:f3:44:4a
Signer

Actual PE Digest

da:df:60:d7:f2:f4:d7:71:08:4e:76:4e:e2:d1:a7:df:b8:b0:8f:46:b1:61:09:f2:b3:fe:8c:bd:ea:f3:44:4a

Digest Algorithm

sha256

PE Digest Matches

true

Headers

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE

Sections

UPX0
Size: - Virtual size: 144KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 64KB - Virtual size: 68KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 63KB - Virtual size: 64KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
out.upx
.exe windows:4 windows x86 arch:x86

Headers

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE

Sections

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

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 16KB - Virtual size: 15KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 2KB - Virtual size: 10KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 63KB - Virtual size: 63KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

Code Sign

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

Key Usages

38:a4:53:47:a4:8f:7b:eb:0d:e1:d6:4e:1a:a2:1b:10Certificate

Extended Key Usages

Key Usages

09:c5:cc:f8:bb:66:7d:71:37:aa:c1:59:80:06:cb:31Certificate

Extended Key Usages

Key Usages

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

Extended Key Usages

Key Usages

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

Extended Key Usages

Key Usages

da:df:60:d7:f2:f4:d7:71:08:4e:76:4e:e2:d1:a7:df:b8:b0:8f:46:b1:61:09:f2:b3:fe:8c:bd:ea:f3:44:4aSigner

Headers

File Characteristics

Sections

UPX0 Size: - Virtual size: 144KB

UPX1 Size: 64KB - Virtual size: 68KB

.rsrc Size: 63KB - Virtual size: 64KB

Headers

File Characteristics

Sections

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

.rdata Size: 16KB - Virtual size: 15KB

.data Size: 2KB - Virtual size: 10KB

.rsrc Size: 63KB - Virtual size: 63KB

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

38:a4:53:47:a4:8f:7b:eb:0d:e1:d6:4e:1a:a2:1b:10
Certificate

09:c5:cc:f8:bb:66:7d:71:37:aa:c1:59:80:06:cb:31
Certificate

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

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

da:df:60:d7:f2:f4:d7:71:08:4e:76:4e:e2:d1:a7:df:b8:b0:8f:46:b1:61:09:f2:b3:fe:8c:bd:ea:f3:44:4a
Signer

UPX0
Size: - Virtual size: 144KB

UPX1
Size: 64KB - Virtual size: 68KB

.rsrc
Size: 63KB - Virtual size: 64KB

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

.rdata
Size: 16KB - Virtual size: 15KB

.data
Size: 2KB - Virtual size: 10KB

.rsrc
Size: 63KB - Virtual size: 63KB