Behavioral task
behavioral1
Sample
astlog.chm
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
astlog.chm
Resource
win10v2004-20240802-en
Behavioral task
behavioral3
Sample
astlog.exe
Resource
win7-20240729-en
General
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Target
a3789752b60d33ddb6e65fd517e3071a_JaffaCakes118
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Size
25KB
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MD5
a3789752b60d33ddb6e65fd517e3071a
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SHA1
5712478d1eb7f645aec6770eea26146067c60e1c
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SHA256
c5cd0a761398af69fc3f4140f741625ec3d345514ca738836f5958a94216afa8
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SHA512
0f140b91e45d30a8d387f89ffa182f71de0fc90aaf48d0f5cc94c785df44b7971449df0c2266cd5da9938d33a1b237330224e38b7ac9f47ab1c782f172ed5e18
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SSDEEP
768:Q8SEN0cEw0Ub16ixXSNUHsEa6XcaufPX5:RSEmcEwp15zHsEa6X9ePJ
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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a3789752b60d33ddb6e65fd517e3071a_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