General
- Target AnalysisIMM.sh
- Size 725B
- Sample260831-jbbn6sfb99
- SHA256 73bfa8063bdbce90ea47425d86eef68db934eec23f826e373b2c1ccd77f31924
- MD5 35cb4b4b71a49bf819c16f96675718b2
- SHA1 9431ea7cdef7852066ba91bb21273be012e74470
- SHA512 15842e66f6c3f18d07e73cbe19a8d94afff480c41b12592cc8333e319f853f1df9c1a2a590d324720db943717a2fcb6fac2783a51109d0efc4963fbfc6724d96
- TLSH T19D019C3960369BF84787079EC0F5586065128437484968BDB09ACA25BA3EAA0619E12A
- MD5 SHA1 SHA512 TLSH
Static task
static1
Behavioral task
behavioral1
Sample
AnalysisIMM.sh
Resource
ubuntu2204-amd64-20260513-en
Malware Config
Targets
-
- Target AnalysisIMM.sh
- Size 725B
- SHA256 73bfa8063bdbce90ea47425d86eef68db934eec23f826e373b2c1ccd77f31924
- MD5 35cb4b4b71a49bf819c16f96675718b2
- SHA1 9431ea7cdef7852066ba91bb21273be012e74470
- SHA512 15842e66f6c3f18d07e73cbe19a8d94afff480c41b12592cc8333e319f853f1df9c1a2a590d324720db943717a2fcb6fac2783a51109d0efc4963fbfc6724d96
- TLSH T19D019C3960369BF84787079EC0F5586065128437484968BDB09ACA25BA3EAA0619E12A
- MD5 SHA1 SHA512 TLSH
-
Modifies password files for system users/ groups
Modifies files storing password hashes of existing users/ groups, likely to grant additional privileges.
-
Executes dropped EXE
-
Modifies Polkit authorization policy
Rule or action files in the Polkit framework are written to, potentially allowing a process or user to execute privileged operations without requiring authentication.
-
OS Credential Dumping
Adversaries may attempt to dump credentials to use it in password cracking.
-
Abuse Elevation Control Mechanism: Sudo and Sudo Caching
Abuse sudo or cached sudo credentials to execute code.
-
Adds a user to the system
-
Checks hardware identifiers (DMI)
Checks DMI information which indicate if the system is a virtual machine.
-
Creates/modifies environment variables
Creating/modifying environment variables is a common persistence mechanism.
-
Enumerates running processes
Discovers information about currently running processes on the system
-
Reads hardware information
Accesses system info like serial numbers, manufacturer names etc.
-
Write file to user bin folder
-
Modifies Bash startup script
-
Reads process memory
Read the memory of a process through the /proc virtual filesystem. This can be used to steal credentials.
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Event Triggered Execution
1Unix Shell Configuration Modification
1Hijack Execution Flow
1Path Interception by PATH Environment Variable
1Modify Authentication Process
1Pluggable Authentication Modules
1Privilege Escalation
Abuse Elevation Control Mechanism
2Sudo and Sudo Caching
2Boot or Logon Autostart Execution
1Event Triggered Execution
1Unix Shell Configuration Modification
1Hijack Execution Flow
1Path Interception by PATH Environment Variable
1Defense Evasion
Abuse Elevation Control Mechanism
2Sudo and Sudo Caching
2Deobfuscate/Decode Files or Information
1Hijack Execution Flow
1Path Interception by PATH Environment Variable
1Indicator Removal
1Clear Linux or Mac System Logs
1Modify Authentication Process
1Pluggable Authentication Modules
1Virtualization/Sandbox Evasion
2System Checks
2Credential Access
Modify Authentication Process
1Pluggable Authentication Modules
1OS Credential Dumping
2/etc/passwd and /etc/shadow
1Proc Filesystem
1