Behavioral task
behavioral1
Sample
55f23c13093a1960df88dfe90539f89f.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
55f23c13093a1960df88dfe90539f89f.exe
Resource
win10v2004-20231215-en
General
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Target
55f23c13093a1960df88dfe90539f89f
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Size
27KB
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MD5
55f23c13093a1960df88dfe90539f89f
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SHA1
e9ef6de960f9fc1924bae21b53117aea60c1b9f3
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SHA256
0d24393aae8318f50386f2c14520fb4a64a4397bb904bf9679bb0d102ab0d944
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SHA512
ae78d7339e0fb288a5c73e1b52d5da42299cdc4177bf65b6238039607d1dabca16dd48b4ed633acf9fc911828920d995bd4ec912d2379a37812bc754dfee4a12
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SSDEEP
384:64zj+8d0YV8ou3W4kQaVFLz/6lHrhDb5Ygm5t3L7jHVwefpzCIX4ak9nVztDjHux:hyIu3lazP/oLhD1Y1tb7jHbxPqn
Malware Config
Signatures
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resource yara_rule sample upx -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/out.upx
Files
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55f23c13093a1960df88dfe90539f89f.exe windows:4 windows x86 arch:x86
Code Sign
01Certificate
IssuerCN=Thawte Premium Server CA,OU=Certification Services Division,O=Thawte Consulting cc,L=Cape Town,ST=Western Cape,C=ZA,1.2.840.113549.1.9.1=#0c197072656d69756d2d736572766572407468617774652e636f6dNot Before01/08/1996, 00:00Not After31/12/2020, 23:59SubjectCN=Thawte Premium Server CA,OU=Certification Services Division,O=Thawte Consulting cc,L=Cape Town,ST=Western Cape,C=ZA,1.2.840.113549.1.9.1=#0c197072656d69756d2d736572766572407468617774652e636f6d0aCertificate
IssuerCN=Thawte Premium Server CA,OU=Certification Services Division,O=Thawte Consulting cc,L=Cape Town,ST=Western Cape,C=ZA,1.2.840.113549.1.9.1=#0c197072656d69756d2d736572766572407468617774652e636f6dNot Before06/08/2003, 00:00Not After05/08/2013, 23:59SubjectCN=Thawte Code Signing CA,O=Thawte Consulting (Pty) Ltd.,C=ZAExtended Key Usages
ExtKeyUsageClientAuth
ExtKeyUsageCodeSigning
Key Usages
KeyUsageCertSign
KeyUsageCRLSign
2b:26:a2:d7:f7:d6:3c:63:27:d9:ce:30:75:09:ac:54Certificate
IssuerCN=Thawte Code Signing CA,O=Thawte Consulting (Pty) Ltd.,C=ZANot Before28/04/2006, 00:00Not After28/04/2007, 23:59SubjectCN=Treehall Limited,OU=Secure Application Development,O=Treehall Limited,L=LONDON,ST=ENGLAND,C=UKExtended Key Usages
ExtKeyUsageCodeSigning
ExtKeyUsageMicrosoftCommercialCodeSigning
Signer
Actual PE DigestDigest AlgorithmPE Digest MatchesfalseHeaders
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: 48KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 20KB - Virtual size: 20KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 2KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
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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: 12KB - Virtual size: 11KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 4KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 20KB - Virtual size: 20KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 20KB - Virtual size: 18KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ