privateloader | officeactivator[.]exe

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General

Target

officeactivator.exe
Size

15.2MB
MD5

209635421416545cb239f7484909fcf8
SHA1

850fb53685bc7e70fe267aaed72f45ae7589ee03
SHA256

e71d9dae0ae73ca4950fd14cc868de8ffdc25985c93b033994631271c74c98e7
SHA512

c64adac9909f7c5f3e0e412b8403e2298d5698c33334f4571757c2c7276bcb820c70a7c48f7a17ccb546906007188dc798c8f3e9063faa8b00cfe7a90410bc0e
SSDEEP

393216:uLoWykOEywRjHw4sxA0gnItqy0wRoEbLNKE:bkPnRjQk0OVyV6yKE

Score

10^/10

upx privateloader

Malware Config

Signatures

Privateloader family
privateloader

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

officeactivator.exe
.exe windows:4 windows x86 arch:x86

Code Sign

75:3e:5c:ef:ec:b6:3d:75:b2:cc:6b:83:03:2f:89:9e
Certificate

Issuer

CN=WZTeam

Not Before

02-11-2016 18:47

Not After

31-12-2039 23:59

Subject

CN=WZTeam

Extended Key Usages

ExtKeyUsageCodeSigning

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

39:4c:25:e1:7c:a0:6d:27:a8:65:e2:3b:d9:1d:22:d4
Certificate

Issuer

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

Not Before

03-05-2023 00:00

Not After

02-08-2034 23:59

Subject

CN=Sectigo RSA Time Stamping Signer #4,O=Sectigo Limited,ST=Manchester,C=GB

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageContentCommitment

75:3e:5c:ef:ec:b6:3d:75:b2:cc:6b:83:03:2f:89:9e
Certificate

Issuer

CN=WZTeam

Not Before

02-11-2016 18:47

Not After

31-12-2039 23:59

Subject

CN=WZTeam

Extended Key Usages

ExtKeyUsageCodeSigning

39:4c:25:e1:7c:a0:6d:27:a8:65:e2:3b:d9:1d:22:d4
Certificate

Issuer

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

Not Before

03-05-2023 00:00

Not After

02-08-2034 23:59

Subject

CN=Sectigo RSA Time Stamping Signer #4,O=Sectigo Limited,ST=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

9e:72:18:9c:bf:f2:77:ca:ee:56:25:ba:e6:1d:b0:34:e8:7c:89:a9:e3:f9:e1:f5:57:72:f2:f9:03:ee:6a:eb
Signer

Actual PE Digest

9e:72:18:9c:bf:f2:77:ca:ee:56:25:ba:e6:1d:b0:34:e8:7c:89:a9:e3:f9:e1:f5:57:72:f2:f9:03:ee:6a:eb

Digest Algorithm

sha256

PE Digest Matches

true

86:ed:83:26:22:d9:8e:1c:df:7e:01:28:a5:03:06:73:f5:42:c9:7f
Signer

Actual PE Digest

86:ed:83:26:22:d9:8e:1c:df:7e:01:28:a5:03:06:73:f5:42:c9:7f

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_32BIT_MACHINE

Sections

UPX0
Size: - Virtual size: 16.0MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 15.1MB - Virtual size: 15.1MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 85KB - Virtual size: 88KB

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

.code
Size: 318KB - Virtual size: 318KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.text
Size: 828KB - Virtual size: 828KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

'.text'
Size: 512B - Virtual size: 21B

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 177KB - Virtual size: 176KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 29.2MB - Virtual size: 29.7MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 83KB - Virtual size: 83KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.modplug
Size: - Virtual size: 20KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

Files

Code Sign

75:3e:5c:ef:ec:b6:3d:75:b2:cc:6b:83:03:2f:89:9eCertificate

Extended Key Usages

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

Extended Key Usages

Key Usages

39:4c:25:e1:7c:a0:6d:27:a8:65:e2:3b:d9:1d:22:d4Certificate

Extended Key Usages

Key Usages

75:3e:5c:ef:ec:b6:3d:75:b2:cc:6b:83:03:2f:89:9eCertificate

Extended Key Usages

39:4c:25:e1:7c:a0:6d:27:a8:65:e2:3b:d9:1d:22:d4Certificate

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

9e:72:18:9c:bf:f2:77:ca:ee:56:25:ba:e6:1d:b0:34:e8:7c:89:a9:e3:f9:e1:f5:57:72:f2:f9:03:ee:6a:ebSigner

86:ed:83:26:22:d9:8e:1c:df:7e:01:28:a5:03:06:73:f5:42:c9:7fSigner

Headers

File Characteristics

Sections

UPX0 Size: - Virtual size: 16.0MB

UPX1 Size: 15.1MB - Virtual size: 15.1MB

.rsrc Size: 85KB - Virtual size: 88KB

Headers

File Characteristics

Sections

.code Size: 318KB - Virtual size: 318KB

.text Size: 828KB - Virtual size: 828KB

'.text' Size: 512B - Virtual size: 21B

.rdata Size: 177KB - Virtual size: 176KB

.data Size: 29.2MB - Virtual size: 29.7MB

.rsrc Size: 83KB - Virtual size: 83KB

.modplug Size: - Virtual size: 20KB

75:3e:5c:ef:ec:b6:3d:75:b2:cc:6b:83:03:2f:89:9e
Certificate

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

39:4c:25:e1:7c:a0:6d:27:a8:65:e2:3b:d9:1d:22:d4
Certificate

75:3e:5c:ef:ec:b6:3d:75:b2:cc:6b:83:03:2f:89:9e
Certificate

39:4c:25:e1:7c:a0:6d:27:a8:65:e2:3b:d9:1d:22:d4
Certificate

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

9e:72:18:9c:bf:f2:77:ca:ee:56:25:ba:e6:1d:b0:34:e8:7c:89:a9:e3:f9:e1:f5:57:72:f2:f9:03:ee:6a:eb
Signer

86:ed:83:26:22:d9:8e:1c:df:7e:01:28:a5:03:06:73:f5:42:c9:7f
Signer

UPX0
Size: - Virtual size: 16.0MB

UPX1
Size: 15.1MB - Virtual size: 15.1MB

.rsrc
Size: 85KB - Virtual size: 88KB

.code
Size: 318KB - Virtual size: 318KB

.text
Size: 828KB - Virtual size: 828KB

'.text'
Size: 512B - Virtual size: 21B

.rdata
Size: 177KB - Virtual size: 176KB

.data
Size: 29.2MB - Virtual size: 29.7MB

.rsrc
Size: 83KB - Virtual size: 83KB

.modplug
Size: - Virtual size: 20KB