Behavioral task
behavioral1
Sample
2024-04-25_8a2fbcc2fcc7673a63a0cf54abb3fbb2_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-25_8a2fbcc2fcc7673a63a0cf54abb3fbb2_cryptolocker.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-25_8a2fbcc2fcc7673a63a0cf54abb3fbb2_cryptolocker
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Size
32KB
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MD5
8a2fbcc2fcc7673a63a0cf54abb3fbb2
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SHA1
18093622cd2c2c938be2636d935477b3210a8365
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SHA256
6cba99126743780a36133bacf27598f24aebc5bf18ade4f62dc0c811a6862ef3
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SHA512
38b6fff9db3cfad4267b8de2b7eaefce05002f0b96d1d723adfa5e0d9a59cced824ef61550f6ca1bb5ad4608939917a7b19c4cf445b801b3112ab906188fbc44
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SSDEEP
768:bFPm5zusFUB2preAr+Ofjg0S16avdrQFiLjJvt6:bFPmpiif/oc+v6
Malware Config
Signatures
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Detection of CryptoLocker Variants 2 IoCs
resource yara_rule sample CryptoLocker_rule2 static1/unpack001/out.upx CryptoLocker_rule2 -
UPX dump on OEP (original entry point) 1 IoCs
resource yara_rule sample UPX -
resource yara_rule sample upx -
Unsigned PE 2 IoCs
Checks for missing Authenticode signature.
resource 2024-04-25_8a2fbcc2fcc7673a63a0cf54abb3fbb2_cryptolocker unpack001/out.upx
Files
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2024-04-25_8a2fbcc2fcc7673a63a0cf54abb3fbb2_cryptolocker.exe windows:5 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: 28KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
UPX1 Size: 11KB - Virtual size: 12KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 8KB - Virtual size: 12KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
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out.upx.exe windows:5 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: 11KB - Virtual size: 11KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 3KB - Virtual size: 2KB
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