zen[.]installer[.]exe

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General

Target

zen.installer.exe
Size

64.0MB
MD5

bdd79e7ea7f5480bc6da12063ca262a1
SHA1

980328b13947ad61aa7c370267c34070fb4480f0
SHA256

e33ea77c6a9574b3af3dbd8f6a8bbaa2639fc0b5a1e4e6f944b69ab30d028ff7
SHA512

efd6d48ebc2df24d19b921d65c6dbefcb022c7fdc6579e03e179fc9626fbbc58c279daca115d442e5a6e1738ce4efc28896b5d54ac8030034bd391f6cc1c2552
SSDEEP

1572864:FnW4/grv2dnVBP7aiBcnu7dTTHeHZ4i+4fgmDTMxfZg3ZH35zCqFG2:CrutVB2iBzhWOi+4ZDTSfZg3ZHUt2

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

63:b0:52:ef:2b:f1:75:58:b5:9c:a2:b2:35:11:01:16:ed:e5:9a:f1:ea:e6:f2:5c:eb:f4:64:80:33:d2:34:6e
Signer

Actual PE Digest

63:b0:52:ef:2b:f1:75:58:b5:9c:a2:b2:35:11:01:16:ed:e5:9a:f1:ea:e6:f2:5c:eb:f4:64:80:33:d2:34:6e

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

63:b0:52:ef:2b:f1:75:58:b5:9c:a2:b2:35:11:01:16:ed:e5:9a:f1:ea:e6:f2:5c:eb:f4:64:80:33:d2:34:6eSigner

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

63:b0:52:ef:2b:f1:75:58:b5:9c:a2:b2:35:11:01:16:ed:e5:9a:f1:ea:e6:f2:5c:eb:f4:64:80:33:d2:34:6e
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