Behavioral task
behavioral1
Sample
astlog.chm
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
astlog.chm
Resource
win10v2004-20240910-en
Behavioral task
behavioral3
Sample
astlog.exe
Resource
win7-20240903-en
General
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Target
e0a051cdc65bd6a8df0d5f5a24357c9f_JaffaCakes118
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Size
25KB
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MD5
e0a051cdc65bd6a8df0d5f5a24357c9f
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SHA1
81ada81dd9582e3da06cdf0e6512152a3325714c
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SHA256
2dbec462a1587b1b69d93a5eb10ba9cf0801cd2ea2890cee1c72f1e5a09cde37
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SHA512
540b13e664a9733dee1ad10e7f5c97e7c7f8d8f993b6213364a5ea2f328311e996c3507c6b0787b4bec152b1e370653dd19d592d929f82787989171417398743
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SSDEEP
768:Q8SEN0cEw0Ub16ixXSNUHsEt8EUGdW3NVqc:RSEmcEwp15zHsEAU0Vqc
Malware Config
Signatures
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Detected Nirsoft tools 1 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
resource yara_rule static1/unpack002/out.upx Nirsoft -
resource yara_rule static1/unpack001/astlog.exe upx -
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource unpack001/astlog.exe unpack002/out.upx
Files
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e0a051cdc65bd6a8df0d5f5a24357c9f_JaffaCakes118.zip
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astlog.chm.chm
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astlog.exe.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
UPX0 Size: - Virtual size: 40KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 15KB - Virtual size: 16KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 5KB - Virtual size: 8KB
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: 18KB - Virtual size: 18KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 4KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 1KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 8KB - Virtual size: 8KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
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readme.txt