General
- Target 1bf4fcd6d035805d44b5ae7ec67860911ed4c43f94e827c988992d0587d1ab40_pre-append.sh
- Size 845KB
- Sample260913-v91azabl4s
- SHA256 5366dbec88d547b24d3673593331ead29bc87447fb688b494f9e604699e5f25c
- MD5 8f15aff4f18fa30fff48546c55ab0451
- SHA1 946110201a5e3d2715efa73ba04894fa34a38090
- SHA512 e2c80fc2e6474b38e03990854e951958d66e4a116cb967890fb54b18a70c60854eb33bb02ea9b3e3c9b465f273606d1105cfcf033b17afb1a911465fb43b2e18
- SSDEEP 24576:n4Y/f/tir8ZLQbdyUHiw5y3dSkohUv2653DmIfke0:l/o8ZatHiw5ycMVmKke0
- TLSH T14A052348E11B8C78ED4E3C8CE49EEFDD192420A28B55E1471A65346EBE347DC806B75F
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
1bf4fcd6d035805d44b5ae7ec67860911ed4c43f94e827c988992d0587d1ab40_pre-append.sh
Resource
ubuntu1804-amd64-20260513-en
Behavioral task
behavioral2
Sample
1bf4fcd6d035805d44b5ae7ec67860911ed4c43f94e827c988992d0587d1ab40_pre-append.sh
Resource
debian9-armhf-20260513-en
Behavioral task
behavioral3
Sample
1bf4fcd6d035805d44b5ae7ec67860911ed4c43f94e827c988992d0587d1ab40_pre-append.sh
Resource
debian9-mipsbe-20260513-en
Behavioral task
behavioral4
Sample
1bf4fcd6d035805d44b5ae7ec67860911ed4c43f94e827c988992d0587d1ab40_pre-append.sh
Resource
debian9-mipsel-20260513-en
Malware Config
Targets
-
- Target 1bf4fcd6d035805d44b5ae7ec67860911ed4c43f94e827c988992d0587d1ab40_pre-append.sh
- Size 845KB
- SHA256 5366dbec88d547b24d3673593331ead29bc87447fb688b494f9e604699e5f25c
- MD5 8f15aff4f18fa30fff48546c55ab0451
- SHA1 946110201a5e3d2715efa73ba04894fa34a38090
- SHA512 e2c80fc2e6474b38e03990854e951958d66e4a116cb967890fb54b18a70c60854eb33bb02ea9b3e3c9b465f273606d1105cfcf033b17afb1a911465fb43b2e18
- SSDEEP 24576:n4Y/f/tir8ZLQbdyUHiw5y3dSkohUv2653DmIfke0:l/o8ZatHiw5ycMVmKke0
- TLSH T14A052348E11B8C78ED4E3C8CE49EEFDD192420A28B55E1471A65346EBE347DC806B75F
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Family: xmrig
XMRig is a high performance, open source, cross platform CPU/GPU miner.
-
Adds new SSH keys
Linux special file to hold SSH keys. The threat actor may add new keys for further remote access.
-
File and Directory Permissions Modification
Adversaries may modify file or directory permissions to evade defenses.
-
Deletes system logs
Deletes log file which contains global system messages. Adversaries may delete system logs to minimize their footprint.
-
Disables AppArmor Mandatory Access Control
Stops or disables AppArmor via systemctl, removing mandatory access control restrictions on process capabilities and file access.
-
Executes dropped EXE
-
Writes DNS configuration
Writes data to DNS resolver config file.
-
Creates/modifies Cron job
Cron allows running tasks on a schedule, and is commonly used for malware persistence.
-
Enumerates running processes
Discovers information about currently running processes on the system
-
Removes the immutable protection flag from a file
Uses chattr to remove the immutable flag from a file, allowing previously write-protected files to be modified or deleted.
-
Write file to user bin folder
-
Writes file to system bin folder
MITRE ATT&CK Enterprise v16
Persistence
Account Manipulation
1SSH Authorized Keys
1Boot or Logon Autostart Execution
1Boot or Logon Initialization Scripts
1RC Scripts
1Scheduled Task/Job
1Cron
1Privilege Escalation
Account Manipulation
1SSH Authorized Keys
1Boot or Logon Autostart Execution
1Boot or Logon Initialization Scripts
1RC Scripts
1Scheduled Task/Job
1Cron
1Defense Evasion
Deobfuscate/Decode Files or Information
1File and Directory Permissions Modification
2Linux and Mac File and Directory Permissions Modification
2Impair Defenses
3Disable or Modify System Firewall
1Disable or Modify Tools
2Indicator Removal
2Clear Linux or Mac System Logs
2