FreeVK[.]exe | Triage

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General

Target

FreeVK.exe
Size

271KB
MD5

45e7c4e2da444ed5a853f4adb27ac567
SHA1

16eec7b96254f283b972104ba8466f9d588c66ff
SHA256

bdb8b8d8ee6788e545cfaf7b14ed92c1876254e44e1b080d1b0db6854a926675
SHA512

e7f4335f39b0a94cdf82f0c3d39e55fc4b1b3dd1ddbad047ed13df2d5e7f0c02859fb095c4189486f91790ae3a6b46ff973a2acaa16ce815d950c165d3a46b10
SSDEEP

6144:9VFW+EWS/m/m/3k8QDoJIsldZ5Qey3vMwubUx:9Vd/S/hs8H77TQJvMwubO

Score

7^/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

FreeVK.exe
.exe windows x86

Code Sign

42:1a:f2:94:09:84:19:1f:52:0a:4b:c6:24:26:a7:4b
Certificate

Issuer

CN=AddTrust External CA Root,OU=AddTrust External TTP Network,O=AddTrust AB,C=SE

Not Before

07/06/2005, 08:09

Not After

30/05/2020, 10:48

Subject

CN=UTN-USERFirst-Object,OU=http://www.usertrust.com,O=The USERTRUST Network,L=Salt Lake City,ST=UT,C=US

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

62:5c:4d:90:8c:d5:42:fb:ab:2e:a5:73:3f:f1:54:19
Certificate

Issuer

CN=UTN-USERFirst-Object,OU=http://www.usertrust.com,O=The USERTRUST Network,L=Salt Lake City,ST=UT,C=US

Not Before

27/04/2011, 00:00

Not After

30/05/2020, 10:48

Subject

CN=COMODO Time Stamping CA,O=COMODO CA Limited,L=Salford,ST=Greater Manchester,C=GB

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

2b:73:db:74:63:11:4c:5a:5b:32:4a:f2:30:57:72:49
Certificate

Issuer

CN=COMODO Time Stamping CA,O=COMODO CA Limited,L=Salford,ST=Greater Manchester,C=GB

Not Before

02/05/2019, 00:00

Not After

30/05/2020, 10:48

Subject

CN=Sectigo SHA-1 Time Stamping Signer,O=Sectigo Limited,L=Salford,ST=Greater Manchester,C=GB

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageContentCommitment

fc:3f:7e:d0:74:c3:ee:0c:ae:fa:65:ad:e9:73:85:6d
Certificate

Issuer

CN=Sectigo RSA Code Signing CA,O=Sectigo Limited,L=Salford,ST=Greater Manchester,C=GB

Not Before

09/09/2019, 00:00

Not After

08/09/2022, 23:59

Subject

CN=Comfort Software Group,O=Comfort Software Group,POSTALCODE=V6H 4E4,STREET=Suite 381+STREET=1001 Broadway W,L=Vancouver,ST=BRITISH COLUMBIA,C=CA

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

1d:a2:48:30:6f:9b:26:18:d0:82:e0:96:7d:33:d3:6a
Certificate

Issuer

CN=USERTrust RSA Certification Authority,O=The USERTRUST Network,L=Jersey City,ST=New Jersey,C=US

Not Before

02/11/2018, 00:00

Not After

31/12/2030, 23:59

Subject

CN=Sectigo RSA Code Signing CA,O=Sectigo Limited,L=Salford,ST=Greater Manchester,C=GB

Extended Key Usages

ExtKeyUsageCodeSigning
ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

fc:3f:7e:d0:74:c3:ee:0c:ae:fa:65:ad:e9:73:85:6d
Certificate

Issuer

CN=Sectigo RSA Code Signing CA,O=Sectigo Limited,L=Salford,ST=Greater Manchester,C=GB

Not Before

09/09/2019, 00:00

Not After

08/09/2022, 23:59

Subject

CN=Comfort Software Group,O=Comfort Software Group,POSTALCODE=V6H 4E4,STREET=Suite 381+STREET=1001 Broadway W,L=Vancouver,ST=BRITISH COLUMBIA,C=CA

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

1d:a2:48:30:6f:9b:26:18:d0:82:e0:96:7d:33:d3:6a
Certificate

Issuer

CN=USERTrust RSA Certification Authority,O=The USERTRUST Network,L=Jersey City,ST=New Jersey,C=US

Not Before

02/11/2018, 00:00

Not After

31/12/2030, 23:59

Subject

CN=Sectigo RSA Code Signing CA,O=Sectigo Limited,L=Salford,ST=Greater Manchester,C=GB

Extended Key Usages

ExtKeyUsageCodeSigning
ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

3d:1a:35:72:30:15:82:63:30:d0:13:71:7e:82:41:08
Certificate

Issuer

CN=Sectigo RSA Time Stamping CA,O=Sectigo Limited,L=Salford,ST=Greater Manchester,C=GB

Not Before

02/05/2019, 00:00

Not After

01/08/2030, 23:59

Subject

CN=Sectigo RSA Time Stamping Signer #1,O=Sectigo Limited,L=Salford,ST=Greater Manchester,C=GB

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageContentCommitment

30:0f:6f:ac:dd:66:98:74:7c:a9:46:36:a7:78:2d:b9
Certificate

Issuer

CN=USERTrust RSA Certification Authority,O=The USERTRUST Network,L=Jersey City,ST=New Jersey,C=US

Not Before

02/05/2019, 00:00

Not After

18/01/2038, 23:59

Subject

CN=Sectigo RSA Time Stamping CA,O=Sectigo Limited,L=Salford,ST=Greater Manchester,C=GB

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

68:f9:81:4e:33:ba:f9:46:59:50:c1:6b:2a:69:12:ef:64:bf:e6:1a:31:79:1d:b6:07:08:19:bc:6e:e3:d6:21
Signer

Actual PE Digest

68:f9:81:4e:33:ba:f9:46:59:50:c1:6b:2a:69:12:ef:64:bf:e6:1a:31:79:1d:b6:07:08:19:bc:6e:e3:d6:21

Digest Algorithm

sha256

PE Digest Matches

true

99:68:10:3e:0c:90:c8:62:90:f6:50:e3:0f:d9:08:88:bc:3c:92:29
Signer

Actual PE Digest

99:68:10:3e:0c:90:c8:62:90:f6:50:e3:0f:d9:08:88:bc:3c:92:29

Digest Algorithm

sha1

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_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI

Sections

UPX0
Size: - Virtual size: 468KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 231KB - Virtual size: 232KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 23KB - Virtual size: 24KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
out.upx
.exe windows x86

Headers

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_BYTES_REVERSED_HI

Sections

.text
Size: 513KB - Virtual size: 512KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.itext
Size: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 9KB - Virtual size: 9KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.bss
Size: - Virtual size: 20KB

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 11KB - Virtual size: 11KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: - Virtual size: 56B

IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 512B - Virtual size: 24B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 108KB - Virtual size: 108KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

Code Sign

42:1a:f2:94:09:84:19:1f:52:0a:4b:c6:24:26:a7:4bCertificate

Key Usages

62:5c:4d:90:8c:d5:42:fb:ab:2e:a5:73:3f:f1:54:19Certificate

Extended Key Usages

Key Usages

2b:73:db:74:63:11:4c:5a:5b:32:4a:f2:30:57:72:49Certificate

Extended Key Usages

Key Usages

fc:3f:7e:d0:74:c3:ee:0c:ae:fa:65:ad:e9:73:85:6dCertificate

Extended Key Usages

Key Usages

1d:a2:48:30:6f:9b:26:18:d0:82:e0:96:7d:33:d3:6aCertificate

Extended Key Usages

Key Usages

fc:3f:7e:d0:74:c3:ee:0c:ae:fa:65:ad:e9:73:85:6dCertificate

Extended Key Usages

Key Usages

1d:a2:48:30:6f:9b:26:18:d0:82:e0:96:7d:33:d3:6aCertificate

Extended Key Usages

Key Usages

3d:1a:35:72:30:15:82:63:30:d0:13:71:7e:82:41:08Certificate

Extended Key Usages

Key Usages

30:0f:6f:ac:dd:66:98:74:7c:a9:46:36:a7:78:2d:b9Certificate

Extended Key Usages

Key Usages

68:f9:81:4e:33:ba:f9:46:59:50:c1:6b:2a:69:12:ef:64:bf:e6:1a:31:79:1d:b6:07:08:19:bc:6e:e3:d6:21Signer

99:68:10:3e:0c:90:c8:62:90:f6:50:e3:0f:d9:08:88:bc:3c:92:29Signer

Headers

File Characteristics

Sections

UPX0 Size: - Virtual size: 468KB

UPX1 Size: 231KB - Virtual size: 232KB

.rsrc Size: 23KB - Virtual size: 24KB

Headers

File Characteristics

Sections

.text Size: 513KB - Virtual size: 512KB

.itext Size: 3KB - Virtual size: 3KB

.data Size: 9KB - Virtual size: 9KB

.bss Size: - Virtual size: 20KB

.idata Size: 11KB - Virtual size: 11KB

.tls Size: - Virtual size: 56B

.rdata Size: 512B - Virtual size: 24B

.rsrc Size: 108KB - Virtual size: 108KB

42:1a:f2:94:09:84:19:1f:52:0a:4b:c6:24:26:a7:4b
Certificate

62:5c:4d:90:8c:d5:42:fb:ab:2e:a5:73:3f:f1:54:19
Certificate

2b:73:db:74:63:11:4c:5a:5b:32:4a:f2:30:57:72:49
Certificate

fc:3f:7e:d0:74:c3:ee:0c:ae:fa:65:ad:e9:73:85:6d
Certificate

1d:a2:48:30:6f:9b:26:18:d0:82:e0:96:7d:33:d3:6a
Certificate

fc:3f:7e:d0:74:c3:ee:0c:ae:fa:65:ad:e9:73:85:6d
Certificate

1d:a2:48:30:6f:9b:26:18:d0:82:e0:96:7d:33:d3:6a
Certificate

3d:1a:35:72:30:15:82:63:30:d0:13:71:7e:82:41:08
Certificate

30:0f:6f:ac:dd:66:98:74:7c:a9:46:36:a7:78:2d:b9
Certificate

68:f9:81:4e:33:ba:f9:46:59:50:c1:6b:2a:69:12:ef:64:bf:e6:1a:31:79:1d:b6:07:08:19:bc:6e:e3:d6:21
Signer

99:68:10:3e:0c:90:c8:62:90:f6:50:e3:0f:d9:08:88:bc:3c:92:29
Signer

UPX0
Size: - Virtual size: 468KB

UPX1
Size: 231KB - Virtual size: 232KB

.rsrc
Size: 23KB - Virtual size: 24KB

.text
Size: 513KB - Virtual size: 512KB

.itext
Size: 3KB - Virtual size: 3KB

.data
Size: 9KB - Virtual size: 9KB

.bss
Size: - Virtual size: 20KB

.idata
Size: 11KB - Virtual size: 11KB

.tls
Size: - Virtual size: 56B

.rdata
Size: 512B - Virtual size: 24B

.rsrc
Size: 108KB - Virtual size: 108KB