Analysis
- max time kernel
149s - max time network
153s - platform
debian-12_armhf - resource
debian12-armhf-20260127-en - resource tags
arch:armhfimage:debian12-armhf-20260127-enkernel:6.1.0-17-armmp-lpaelocale:en-usos:debian-12-armhfsystem - submitted
16/10/2026, 18:24
Behavioral task
behavioral1
Sample
arm6
Resource
debian12-armhf-20260127-en
6 signatures
150 seconds
General
- Target arm6
- Size 4.7MB
- Sample261016-w2evqsty4p
- SHA256 b1e2cc1be2f386d4ad171b7cb0df9eb9c881e5b5945224a38fd021e8e8de8378
- MD5 3545dc085b99e0620e6797eed5487ec4
- SHA1 107070b9f1af91fce359bc819c66c3b0b5b2c763
- SHA512 9967d587b33c66f74f651fc36da68decbcc1951bf8507b8dfcbceb9dae4d2501e7348f51fbac918fc1eb46ce7b4799a634d9ed8fb8172f486e740f2404fd4cc1
- SSDEEP 24576:eTd8BorG/9w0O/RdHC43IFbCEF25QdRdRk/689ODlwMW25uzZJUYiOhjrhOaaalA:zuWPl5c3TmrVeiefWJ+BAMOb8naATloB
- TLSH T1B5361997B8814A43C4E4367ABCBD81C833A35EB99B9753566D04FE3C3ABE1A90D35314
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Creates/modifies Cron job 1 TTPs 1 IoCs
Cron allows running tasks on a schedule, and is commonly used for malware persistence.
description ioc Process File opened for modification /var/spool/cron/crontabs/tmp.PFZN5D crontab - Modifies systemd 2 TTPs 1 IoCs
Adds/ modifies systemd service files. Likely to achieve persistence.
description ioc Process File opened for modification /etc/systemd/system/sysd.service arm6 - Write file to user bin folder 2 IoCs
description ioc Process File opened for modification /usr/bin/test_write arm6 File opened for modification /usr/bin/sysd arm6 - Enumerates kernel/hardware configuration 1 TTPs 1 IoCs
Reads contents of /sys virtual filesystem to enumerate system information.
description ioc Process File opened for reading /sys/kernel/mm/transparent_hugepage/hpage_pmd_size arm6 -
description ioc Process File opened for reading /proc/filesystems systemctl File opened for reading /proc/stat arm6 File opened for reading /proc/meminfo arm6 File opened for reading /proc/filesystems systemctl File opened for reading /proc/filesystems systemctl - Writes file to tmp directory 1 IoCs
Malware often drops required files in the /tmp directory.
description ioc Process File opened for modification /tmp/cron_tmp arm6
Processes
-
/tmp/arm6/tmp/arm61⤵
- Modifies systemd
- Write file to user bin folder
- Enumerates kernel/hardware configuration
- Reads runtime system information
- Writes file to tmp directory
PID:773 -
/usr/bin/systemctlsystemctl daemon-reload2⤵
- Reads runtime system information
PID:795
-
-
/usr/bin/systemctlsystemctl enable sysd2⤵
- Reads runtime system information
PID:817
-
-
/usr/bin/systemctlsystemctl start sysd2⤵
- Reads runtime system information
PID:835
-
-
/usr/bin/crontabcrontab -l2⤵PID:838
-
-
/usr/bin/crontabcrontab /tmp/cron_tmp2⤵
- Creates/modifies Cron job
PID:842
-
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1XDG Autostart Entries
1Create or Modify System Process
1Systemd Service
1Scheduled Task/Job
1Cron
1Replay Monitor
Loading Replay Monitor...
Downloads
- Path /etc/systemd/system/sysd.service
- Size 175B
- SHA256 cfad0df157c997fe75b54580ef544beb90f6275851878e1cf3b9a7749e3fab40
- MD5 8323ab0ba9ec116e3b66efde6ff75664
- SHA1 33960d0a27791cd23fc159c203a7f98d43b233e0
- SHA512 e747fdd6381d96958e16a3439e8bd4e3edfe8c117176f5578dc7cd71f971a9e4859585bb6c9c56104e108b6867eaea1b681403586db6e6102cabe66b3b508379
- TLSH T110C0C023762060F0DD4E2C724FA377804E1101440F8DF0304FC1210540D46478038CAD
- MD5 SHA1 SHA512 TLSH
- Path /tmp/cron_tmp
- Size 41B
- SHA256 3a13b88885017f3318032aef9d0b829caf810c14f7dfa8440848b458499d0edf
- MD5 5d2863a8c3d98587606d4b4fea75ae2c
- SHA1 a62d1eb1b286feace3774c8c16a7b14904ccb787
- SHA512 e84f3d04cca77b5004637b8d6bea9dc0a307a87e67882d82e2dcc62f5012df99aea96ee6d1135b47a7a98116c0649f14d29d58b4cf9eaa5e658e2965593d33d1
- MD5 SHA1 SHA512
- Path /var/spool/cron/crontabs/tmp.PFZN5D
- Size 228B
- SHA256 109102b485a2cb23d8e8ecb7792f3df2c2e7b21118a77beef42481c8c144f19f
- MD5 70a699d5749eeb4aedad7ec93ecc4650
- SHA1 8cf7a3a648dd6c369604394ac492e3a70811f91a
- SHA512 bdb3c56b70565c2f37479e9ff118a48a83c1d7efc9c84afb1b0d0ebfdd988ec2cf2531d4759e98a45c9a2522b86da3c19402cf365e9743a69b62af279c2c47f6
- TLSH T1EBD0233C3F106C342E000F45109F142C6E82D478A04CEF60F0CC7018011D32F2740E31
- MD5 SHA1 SHA512 TLSH