wr[.]exe | Triage

Resubmissions

01/05/2024, 17:05

240501-vl18csbg5w 10

01/05/2024, 16:28

240501-tyttdadd45 10

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General

Target

wr.exe
Size

4.2MB
MD5

e2a072228078e6f3cf5073f4af029913
SHA1

16ed4faf2239de52acdc439e88047984b8510547
SHA256

a742c71ce1ae3316e82d2b8c788b9c6ffd723d8d6da4f94ba5639b84070bb639
SHA512

1ff79ce5e138afe9924577d4901ac028a7a2ba90b2273779b4a933aa65a6963d1c23a5b35e6015eb96f8b3efdc1766b7a2b5e18cc7bd181dc82660c9ef34fa6e
SSDEEP

98304:DdTDuHIp8vWucCSSR94RD2rwCL2ZtIjcQyWYkgiDyYNWGtlNRtkG2wpOx1DkkSgB:dDbTJGi2rAZUghYPtXR6GhI9R0n0

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

wr.exe
.exe windows:6 windows x64 arch:x64

Code Sign

33:00:00:02:52:8b:33:aa:f8:95:f3:39:db:00:00:00:00:02:52
Certificate

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

02/09/2021, 18:32

Not After

01/09/2022, 18:32

Subject

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:0e:90:d2:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

08/07/2011, 20:59

Not After

08/07/2026, 21:09

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

f1:c9:e5:07:eb:f8:5f:d3:65:c0:d7:23:4f:8d:05:89:d3:7c:e9:7e:1f:55:ef:3c:cf:7d:85:93:ca:48:f0:5f
Signer

Actual PE Digest

f1:c9:e5:07:eb:f8:5f:d3:65:c0:d7:23:4f:8d:05:89:d3:7c:e9:7e:1f:55:ef:3c:cf:7d:85:93:ca:48:f0:5f

Digest Algorithm

sha256

PE Digest Matches

false

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED

Sections

UPX0
Size: - Virtual size: 3.7MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 4.2MB - Virtual size: 4.2MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX2
Size: 512B - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
out.upx
.exe windows:6 windows x64 arch:x64

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED

Sections

.text
Size: 2.5MB - Virtual size: 2.5MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 2.4MB - Virtual size: 2.4MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 240KB - Virtual size: 619KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

/4
Size: 512B - Virtual size: 295B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/19
Size: 422KB - Virtual size: 421KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/32
Size: 82KB - Virtual size: 82KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/46
Size: 512B - Virtual size: 48B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/65
Size: 862KB - Virtual size: 861KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/78
Size: 558KB - Virtual size: 557KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/90
Size: 139KB - Virtual size: 139KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.idata
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 42KB - Virtual size: 41KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.symtab
Size: 378KB - Virtual size: 377KB

IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Resubmissions

Sharing

General

Malware Config

Signatures

Files

Code Sign

33:00:00:02:52:8b:33:aa:f8:95:f3:39:db:00:00:00:00:02:52Certificate

Extended Key Usages

61:0e:90:d2:00:00:00:00:00:03Certificate

Key Usages

f1:c9:e5:07:eb:f8:5f:d3:65:c0:d7:23:4f:8d:05:89:d3:7c:e9:7e:1f:55:ef:3c:cf:7d:85:93:ca:48:f0:5fSigner

Headers

DLL Characteristics

File Characteristics

Sections

UPX0 Size: - Virtual size: 3.7MB

UPX1 Size: 4.2MB - Virtual size: 4.2MB

UPX2 Size: 512B - Virtual size: 4KB

Headers

DLL Characteristics

File Characteristics

Sections

.text Size: 2.5MB - Virtual size: 2.5MB

.rdata Size: 2.4MB - Virtual size: 2.4MB

.data Size: 240KB - Virtual size: 619KB

/4 Size: 512B - Virtual size: 295B

/19 Size: 422KB - Virtual size: 421KB

/32 Size: 82KB - Virtual size: 82KB

/46 Size: 512B - Virtual size: 48B

/65 Size: 862KB - Virtual size: 861KB

/78 Size: 558KB - Virtual size: 557KB

/90 Size: 139KB - Virtual size: 139KB

.idata Size: 1KB - Virtual size: 1KB

.reloc Size: 42KB - Virtual size: 41KB

.symtab Size: 378KB - Virtual size: 377KB

33:00:00:02:52:8b:33:aa:f8:95:f3:39:db:00:00:00:00:02:52
Certificate

61:0e:90:d2:00:00:00:00:00:03
Certificate

f1:c9:e5:07:eb:f8:5f:d3:65:c0:d7:23:4f:8d:05:89:d3:7c:e9:7e:1f:55:ef:3c:cf:7d:85:93:ca:48:f0:5f
Signer

UPX0
Size: - Virtual size: 3.7MB

UPX1
Size: 4.2MB - Virtual size: 4.2MB

UPX2
Size: 512B - Virtual size: 4KB

.text
Size: 2.5MB - Virtual size: 2.5MB

.rdata
Size: 2.4MB - Virtual size: 2.4MB

.data
Size: 240KB - Virtual size: 619KB

/4
Size: 512B - Virtual size: 295B

/19
Size: 422KB - Virtual size: 421KB

/32
Size: 82KB - Virtual size: 82KB

/46
Size: 512B - Virtual size: 48B

/65
Size: 862KB - Virtual size: 861KB

/78
Size: 558KB - Virtual size: 557KB

/90
Size: 139KB - Virtual size: 139KB

.idata
Size: 1KB - Virtual size: 1KB

.reloc
Size: 42KB - Virtual size: 41KB

.symtab
Size: 378KB - Virtual size: 377KB