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litterbox/Scanners/Yara/rules/elastic-yara/Linux_Hacktool_Wipelog.yar
T
2026-05-04 08:56:43 -07:00

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rule Linux_Hacktool_Wipelog_daea1aa4 {
meta:
author = "Elastic Security"
id = "daea1aa4-0df7-4308-83e1-0707dcda2e54"
fingerprint = "93f899e14e6331c2149ba5c0c1e9dd8def5a7d1b6d2a7af66eade991dea77b3c"
creation_date = "2022-03-17"
last_modified = "2022-07-22"
threat_name = "Linux.Hacktool.Wipelog"
reference_sample = "39b3a95928326012c3b2f64e2663663adde4b028d940c7e804ac4d3953677ea6"
severity = 100
arch_context = "x86"
scan_context = "file, memory"
license = "Elastic License v2"
os = "linux"
strings:
$s1 = "Erase one username on tty"
$s2 = "wipe_utmp"
$s3 = "wipe_acct"
$s4 = "wipe_lastlog"
$s5 = "wipe_wtmp"
$s6 = "getpwnam"
$s7 = "ERROR: Can't find user in passwd"
$s8 = "ERROR: Opening tmp ACCT file"
$s9 = "/var/log/wtmp"
$s10 = "/var/log/lastlog"
$s11 = "Patching %s ...."
condition:
4 of them
}