General
- Target 1bf4fcd6d035805d44b5ae7ec67860911ed4c43f94e827c988992d0587d1ab40_pre-append.sh
- Size 15KB
- Sample260913-th5kyazanc
- SHA256 dafb70c0cf8399f7aec88f1b3d29e0662504dfc452a475408b3f27c64ddc08a3
- MD5 7edf2b18b1ea87a3f16df5e5fcda8505
- SHA1 fc478a18e7972b763758fbc0c452dde5d47004af
- SHA512 0e80fec01f8f5e7cd6208f04ac98ea06af342c065f974ec95c44c65b57466b414d42d0142d63da2cb7a8fd2a3184c0a0440b01f2fe899c5a9607a2e7ae0b33cd
- SSDEEP 384:YWOWwvrR3Ysbhadp2Y5Mm5sioTSNN72ul9VUH3zW:tOW2fg2cToTSNN72Yai
- TLSH T15E62C0F5C864CC9EE989C9A8B6DD3DE5167135F2EBCE700026C58749F86DA78E803471
- 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 15KB
- SHA256 dafb70c0cf8399f7aec88f1b3d29e0662504dfc452a475408b3f27c64ddc08a3
- MD5 7edf2b18b1ea87a3f16df5e5fcda8505
- SHA1 fc478a18e7972b763758fbc0c452dde5d47004af
- SHA512 0e80fec01f8f5e7cd6208f04ac98ea06af342c065f974ec95c44c65b57466b414d42d0142d63da2cb7a8fd2a3184c0a0440b01f2fe899c5a9607a2e7ae0b33cd
- SSDEEP 384:YWOWwvrR3Ysbhadp2Y5Mm5sioTSNN72ul9VUH3zW:tOW2fg2cToTSNN72Yai
- TLSH T15E62C0F5C864CC9EE989C9A8B6DD3DE5167135F2EBCE700026C58749F86DA78E803471
- 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