Behavioral task
behavioral1
Sample
7a5999c54f4588ff1581d03938b7dcbd874ee871254e2018b98ef911ae6c8dee.exe
Resource
win10-20240404-en
General
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Target
7a5999c54f4588ff1581d03938b7dcbd874ee871254e2018b98ef911ae6c8dee.7z
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Size
278KB
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MD5
a12a1fe4075d0b1472fc067f56f56f6f
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SHA1
d53e2a7a9dc08e4c0c35f07735c0ffa3f93f67ff
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SHA256
63912423ec365577887c0459ef7926b14827113c28dad3770a2855dfc25c1bc3
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SHA512
adffacb99d8ec1e87a0b99f72c3d92269502df4024287ff26bd4c078e47c234a6fc630574799e79c0bdc54e8768d5a579e0cf27d3e7b3b217811ed8877854953
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SSDEEP
6144:9D56P99wa3zI6zXRmK+EAZAo8xjLJfNTVlJPXvd6f9igc:ZszX4eFo8VdfNT1d6UZ
Malware Config
Signatures
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AtomSilo Ransomware 1 IoCs
resource yara_rule static1/unpack001/7a5999c54f4588ff1581d03938b7dcbd874ee871254e2018b98ef911ae6c8dee.exe family_atomsilo -
Atomsilo family
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Patched UPX-packed file 1 IoCs
Sample is packed with UPX but required header fields are zeroed out to prevent unpacking with the default UPX tool.
resource yara_rule static1/unpack001/7a5999c54f4588ff1581d03938b7dcbd874ee871254e2018b98ef911ae6c8dee.exe patched_upx -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource unpack001/7a5999c54f4588ff1581d03938b7dcbd874ee871254e2018b98ef911ae6c8dee.exe
Files
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7a5999c54f4588ff1581d03938b7dcbd874ee871254e2018b98ef911ae6c8dee.7z.7z
Password: infected
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7a5999c54f4588ff1581d03938b7dcbd874ee871254e2018b98ef911ae6c8dee.exe.exe windows:5 windows x64 arch:x64
Password: infected
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
Sections
lala Size: 536KB - Virtual size: 536KB
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
fafa Size: 328KB - Virtual size: 328KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 4KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE