d46555af1173d22f07c37ef9c1e0e74fd68db022f2b6fb3ab5388d2c5bc6a98e

Analysis

max time kernel
3s
platform
debian-9_mipsel
resource
debian9-mipsel-20260513-en
resource tags

arch:mipselimage:debian9-mipsel-20260513-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem
submitted
27/05/2026, 12:19

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General

Target
clean
Size 795B
Sample260527-phcspsds9q
SHA256 d46555af1173d22f07c37ef9c1e0e74fd68db022f2b6fb3ab5388d2c5bc6a98e
MD5 397ff5e54194072e6d8a44a0d8cc1b27
SHA1 42477b0c3b277b5e907b0a35c644f3291ed30a63
SHA512 ff40c129e3b2891ae280bce97e52ee69aea18ca60ea7901f7efd4cf11d3bf1c4ee48e9eb90e5f045e080ab784ee2a9942c2bcf0a531b7f4602931f63c4b32d74
TLSH
T1DD01288E6722D51420DDD524FAF14F7DAE31F2856D226816248B31FCE5ECA9433E8C36
MD5 SHA1 SHA512 TLSH

Score

6^/10

discovery

Malware Config

Signatures

Attempts to change immutable files 22 IoCs

Modifies inode attributes on the filesystem to allow changing of immutable files.

pid	Process
749	chattr
759	chattr
773	grep
776	chattr
778	chattr
779	grep
747	chattr
764	chattr
765	grep
768	chattr
769	grep
775	chattr
742	grep
751	grep
771	chattr
750	chattr
754	chattr
756	grep
760	grep
777	chattr
737	chattr
739	chattr

Enumerates kernel/hardware configuration 1 TTPs 2 IoCs

Reads contents of /sys virtual filesystem to enumerate system information.

discovery

System Information Discovery

T1082

description	ioc	Process
File opened for reading	/sys/fs/kdbus/0-system/bus	systemctl
File opened for reading	/sys/fs/kdbus/0-system/bus	systemctl

Reads runtime system information 16 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/cmdline	systemctl
File opened for reading	/proc/cmdline	systemctl
File opened for reading	/proc/filesystems	mv
File opened for reading	/proc/filesystems	mv
File opened for reading	/proc/filesystems	mv
File opened for reading	/proc/filesystems	mv
File opened for reading	/proc/filesystems	mv
File opened for reading	/proc/filesystems	systemctl
File opened for reading	/proc/1/environ	systemctl
File opened for reading	/proc/filesystems	systemctl
File opened for reading	/proc/self/stat	systemctl
File opened for reading	/proc/filesystems	mv
File opened for reading	/proc/filesystems	mv
File opened for reading	/proc/self/stat	systemctl
File opened for reading	/proc/1/environ	systemctl
File opened for reading	/proc/filesystems	mv

Writes file to tmp directory 1 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/clean_crontab	clean

/tmp/clean
/tmp/clean
1⤵
- Writes file to tmp directory
PID:723
- /bin/systemctl
  systemctl disable c3pool_miner
  2⤵
  - Enumerates kernel/hardware configuration
  - Reads runtime system information
  PID:727
- /bin/systemctl
  systemctl stop c3pool_miner
  2⤵
  - Enumerates kernel/hardware configuration
  - Reads runtime system information
  PID:734
- /usr/bin/chattr
  chattr -ia /var/spool/cron/crontabs
  2⤵
  - Attempts to change immutable files
  PID:737
- /usr/bin/chattr
  chattr -ia /etc/crontab
  2⤵
  - Attempts to change immutable files
  PID:739
- /bin/grep
  grep -vE "wget|curl|/dev/tcp|/tmp|\\.sh|nc|bash -i|sh -i|base64 -d" /etc/crontab
  2⤵
  - Attempts to change immutable files
  PID:742
- /bin/mv
  mv /tmp/clean_crontab /etc/crontab
  2⤵
  - Reads runtime system information
  PID:745
- /usr/bin/chattr
  chattr -ia /etc/cron.hourly
  2⤵
  - Attempts to change immutable files
  PID:747
- /usr/bin/chattr
  chattr -ia /etc/cron.daily
  2⤵
  - Attempts to change immutable files
  PID:749
- /usr/bin/chattr
  chattr -ia /etc/cron.daily/apt-compat
  2⤵
  - Attempts to change immutable files
  PID:750
- /bin/grep
  grep -vE "wget|curl|/dev/tcp|/tmp|\\.sh|nc|bash -i|sh -i|base64 -d" /etc/cron.daily/apt-compat
  2⤵
  - Attempts to change immutable files
  PID:751
- /bin/mv
  mv /tmp/clean_crontab /etc/cron.daily/apt-compat
  2⤵
  - Reads runtime system information
  PID:753
- /usr/bin/chattr
  chattr -ia /etc/cron.daily/bsdmainutils
  2⤵
  - Attempts to change immutable files
  PID:754
- /bin/grep
  grep -vE "wget|curl|/dev/tcp|/tmp|\\.sh|nc|bash -i|sh -i|base64 -d" /etc/cron.daily/bsdmainutils
  2⤵
  - Attempts to change immutable files
  PID:756
- /bin/mv
  mv /tmp/clean_crontab /etc/cron.daily/bsdmainutils
  2⤵
  - Reads runtime system information
  PID:757
- /usr/bin/chattr
  chattr -ia /etc/cron.daily/dpkg
  2⤵
  - Attempts to change immutable files
  PID:759
- /bin/grep
  grep -vE "wget|curl|/dev/tcp|/tmp|\\.sh|nc|bash -i|sh -i|base64 -d" /etc/cron.daily/dpkg
  2⤵
  - Attempts to change immutable files
  PID:760
- /bin/mv
  mv /tmp/clean_crontab /etc/cron.daily/dpkg
  2⤵
  - Reads runtime system information
  PID:762
- /usr/bin/chattr
  chattr -ia /etc/cron.daily/exim4-base
  2⤵
  - Attempts to change immutable files
  PID:764
- /bin/grep
  grep -vE "wget|curl|/dev/tcp|/tmp|\\.sh|nc|bash -i|sh -i|base64 -d" /etc/cron.daily/exim4-base
  2⤵
  - Attempts to change immutable files
  PID:765
- /bin/mv
  mv /tmp/clean_crontab /etc/cron.daily/exim4-base
  2⤵
  - Reads runtime system information
  PID:767
- /usr/bin/chattr
  chattr -ia /etc/cron.daily/logrotate
  2⤵
  - Attempts to change immutable files
  PID:768
- /bin/grep
  grep -vE "wget|curl|/dev/tcp|/tmp|\\.sh|nc|bash -i|sh -i|base64 -d" /etc/cron.daily/logrotate
  2⤵
  - Attempts to change immutable files
  PID:769
- /bin/mv
  mv /tmp/clean_crontab /etc/cron.daily/logrotate
  2⤵
  - Reads runtime system information
  PID:770
- /usr/bin/chattr
  chattr -ia /etc/cron.daily/passwd
  2⤵
  - Attempts to change immutable files
  PID:771
- /bin/grep
  grep -vE "wget|curl|/dev/tcp|/tmp|\\.sh|nc|bash -i|sh -i|base64 -d" /etc/cron.daily/passwd
  2⤵
  - Attempts to change immutable files
  PID:773
- /bin/mv
  mv /tmp/clean_crontab /etc/cron.daily/passwd
  2⤵
  - Reads runtime system information
  PID:774
- /usr/bin/chattr
  chattr -ia /etc/cron.weekly
  2⤵
  - Attempts to change immutable files
  PID:775
- /usr/bin/chattr
  chattr -ia /etc/cron.monthly
  2⤵
  - Attempts to change immutable files
  PID:776
- /usr/bin/chattr
  chattr -ia /etc/cron.d
  2⤵
  - Attempts to change immutable files
  PID:777
- /usr/bin/chattr
  chattr -ia /etc/anacrontab
  2⤵
  - Attempts to change immutable files
  PID:778
- /bin/grep
  grep -vE "wget|curl|/dev/tcp|/tmp|\\.sh|nc|bash -i|sh -i|base64 -d" /etc/anacrontab
  2⤵
  - Attempts to change immutable files
  PID:779
- /bin/mv
  mv /tmp/clean_crontab /etc/anacrontab
  2⤵
  - Reads runtime system information
  PID:780
- /bin/rm
  rm -rf /tmp/clean /tmp/systemd-private-46ddee0e62024a009163dfea1a8c45be-systemd-timedated.service-mYOyBM
  2⤵
  PID:781
- /bin/rm
  rm -rf /var/tmp/systemd-private-46ddee0e62024a009163dfea1a8c45be-systemd-timedated.service-OU0eqN
  2⤵
  PID:782
- /bin/rm
  rm -rf "/dev/shm/*"
  2⤵
  PID:783

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

clean_crontab

Path /tmp/clean_crontab
Size 3KB
SHA256 a452648bb2e987dfbea6d16656f8009e641b215c69835cee79f108030be8ec7f
MD5 3e38c915416b4d0105fcc80dbe40280c
SHA1 280f2da18f7f6276b50cc3df097922745fabab76
SHA512 23be44f6166482ded73ab64db9fbf225910b77e9ef691de0450fc2ecc2000674c716c86720fcc0db6ab2b2f1c75d59ea0465e414700a371f2fdb6a4ec9835c23
TLSH
T115816249A37CA730144805BC39FD16265AB5043F4C11BE60B4ADB2582B9BE9832FAF9C
MD5 SHA1 SHA512 TLSH

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clean_crontab

Path /tmp/clean_crontab
Size 722B
SHA256 0e5c204385b21e15b031c83f37212bf5a4ee77b51762b7b54bd6ad973ebdf354
MD5 8f111d100ea459f68d333d63a8ef2205
SHA1 077ca9c46a964de67c0f7765745d5c6f9e2065c3
SHA512 d81767b47fb84aaf435f930356ded574ee9825ec710a2e7c26074860d8a385741d65572740137b6f9686c285a32e2951ca933393b266746988f1737aad059adb
TLSH
T14B019C6A9366B3BF464CDDE166D7BDAC226230641C007D0B94BD2580B24FB625050C6E
MD5 SHA1 SHA512 TLSH

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clean_crontab

Path /tmp/clean_crontab
Size 1KB
SHA256 8eeae3a9df22621d51062e4dadfc5c63b49732b38a37b5d4e52c99c2237e5767
MD5 bc4a71cbcaeed4179f25d798257fa980
SHA1 61445721d0b5d86ac0a8386a4ceef450118f4fbb
SHA512 709badb4dd1a15a10b34f82d31ed4bbab81698190d2ec94e2ad3dcdc90d97b893eb61cde72f08e517a8beea08ec1d675385fd42a9e77530981b7d83c6bd3548c
TLSH
T1FE31320172CA19BD16B7189C169BA21CAF6A349B45193610F8CD7460AF70931F571EBF
MD5 SHA1 SHA512 TLSH

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clean_crontab

Path /tmp/clean_crontab
Size 279B
SHA256 340dfc483eb79b83b0630b1c0b339e30ebd724ef2f58bb87ba92946472e8e63d
MD5 911a774fe040993b929504f3d9415ab3
SHA1 55ccc8e95097f005abf9f4d91a14394e6d0f5da5
SHA512 1eb8fd8dc6fd444ba2fa3ca7e863894cfb19383e5b20c700ed24aa615402340424d093a761632cf27a3e789ecd548ca972806e154161635da4f97b415d6fc64f
TLSH
T1E1D02BC6EC444330BC1D45A7645B1FA6E0C6167F1A15BCB480F93F10B1E56B830D290E
MD5 SHA1 SHA512 TLSH

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clean_crontab

Path /tmp/clean_crontab
Size 1KB
SHA256 eff406c0943e1399e3e15fdb6ca2893a187d6b273f5bd9d17eec4e4b4c52b8cd
MD5 30e858769aacd9cc309502f8d5c6aa0f
SHA1 927c06dd4d6cbb5ca02e9505011c8667c47f2d6e
SHA512 f7f6e70925afe54fc2fdaae13a750b3c49fde9fa59d80af321885d270112ebb2291f034037708f1ba8515f3e3e1ca0a493cd1e002895aa699c469e0365ccde3c
TLSH
T17F31745F43004E7D558308E89DA68EC0DA0460B757B4314436AEF6F52F8B332F6A756C
MD5 SHA1 SHA512 TLSH

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads