819eab9afaca5601ffd83c85a7edd6cd1899e6b431ab8e901a385065912adeb1

Resubmissions

28-02-2022 15:41

220228-s4qs8seeg3 10

12-06-2021 09:55

210612-f7rmdwaays 10

12-06-2021 09:51

210612-kcegep1ef2 7

Analysis

max time kernel
0s
max time network
121s
platform
linux_mipsel
resource
debian9-mipsel
submitted
12-06-2021 09:51

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General

Target

installer.run
Size

99KB
MD5

d4b45f4ab1ec5616026e8fbed2431be8
SHA1

28ecd4944f37bb8f9b7dfd1d486f7c9c027166d0
SHA256

819eab9afaca5601ffd83c85a7edd6cd1899e6b431ab8e901a385065912adeb1
SHA512

2026b561dce762930e3c6a7179d509efb7be482281111f65461328ed6da5c04e1bb7a7bf3f5cd883920a2cdd50e5c72b1c500d6f4963174792f0c183070b0771

Score

7^/10

Malware Config

Signatures

Write file to user bin folder 1 TTPs 3 IoCs

Hijack Execution Flow

T1574

description	ioc	Process
/usr/bin/which	/usr/bin/which	which
/usr/bin/which	/usr/bin/which	which
/usr/bin/which	/usr/bin/which	which

Reads runtime system information 13 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
/proc/filesystems	/proc/filesystems	id
/proc/filesystems	/proc/filesystems	cp
/proc/filesystems	/proc/filesystems	cp
/proc/filesystems	/proc/filesystems	crontab
/proc/filesystems	/proc/filesystems	id
/proc/filesystems	/proc/filesystems	tar
/proc/filesystems	/proc/filesystems	id
/proc/filesystems	/proc/filesystems	mkdir
/proc/filesystems	/proc/filesystems	cp
/proc/filesystems	/proc/filesystems	crontab
/proc/filesystems	/proc/filesystems	crontab
/proc/filesystems	/proc/filesystems	mkdir
/proc/self/mountinfo	/proc/self/mountinfo	df

Writes file to tmp directory 3 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
/tmp/selfgz341	/tmp/selfgz341	rm
/tmp/selfgz341	/tmp/selfgz341	rm
/tmp/selfgz341	/tmp/selfgz341	df

./installer.run
./installer.run
1⤵
PID:341
- /usr/bin/id
  id -u
  2⤵
  - Reads runtime system information
  PID:344
- /usr/bin/tty
  tty -s
  2⤵
  PID:347
- /bin/mkdir
  mkdir /tmp/selfgz341
  2⤵
  - Reads runtime system information
  PID:348
- /usr/bin/basename
  basename /usr/bin/sha256sum
  2⤵
  PID:365
- /usr/bin/basename
  basename /usr/bin/md5sum
  2⤵
  PID:370
- /usr/bin/expr
  expr 1 + 1
  2⤵
  PID:395
- /usr/bin/expr
  expr 14819 + 87287
  2⤵
  PID:397
- /bin/chgrp
  chgrp -R 0 .
  2⤵
  PID:425
- /usr/bin/expr
  expr 14819 + 87287
  2⤵
  PID:429
- ./setup.sh
  ./setup.sh
  2⤵
  PID:430
- - /bin/mkdir
    mkdir -p "~/.cache/gnome-software/gnome-shell-extensions"
    3⤵
    - Reads runtime system information
    PID:431
- - /bin/cp
    cp ./gnome-shell-ext "~/.cache/gnome-software/gnome-shell-extensions"
    3⤵
    - Reads runtime system information
    PID:432
- - /bin/cp
    cp ./gnome-shell-ext.sh "~/.cache/gnome-software/gnome-shell-extensions"
    3⤵
    - Reads runtime system information
    PID:433
- - /bin/cp
    cp ./rtp.dat "~/.cache/gnome-software/gnome-shell-extensions"
    3⤵
    - Reads runtime system information
    PID:434
- - /bin/chmod
    chmod +x "~/.cache/gnome-software/gnome-shell-extensions/gnome-shell-ext"
    3⤵
    PID:435
- - /bin/chmod
    chmod +x "~/.cache/gnome-software/gnome-shell-extensions/gnome-shell-ext.sh"
    3⤵
    PID:436
- - /bin/grep
    grep -q "0-59 * * * * ~/.cache/gnome-software/gnome-shell-extensions/gnome-shell-ext.sh"
    3⤵
    PID:438
- - /usr/bin/crontab
    crontab -l
    3⤵
    - Reads runtime system information
    PID:437
- - /usr/bin/crontab
    crontab -u root -
    3⤵
    - Reads runtime system information
    PID:441
- - /usr/bin/crontab
    crontab -u root -l
    3⤵
    - Reads runtime system information
    PID:439
- - /usr/bin/nohup
    nohup "~/.cache/gnome-software/gnome-shell-extensions/gnome-shell-ext.sh"
    3⤵
    PID:445
- - /bin/rm
    rm -rf -- /tmp/selfgz341
    3⤵
    - Writes file to tmp directory
    PID:447
- - ~/.cache/gnome-software/gnome-shell-extensions/gnome-shell-ext.sh
    "~/.cache/gnome-software/gnome-shell-extensions/gnome-shell-ext.sh"
    3⤵
    PID:445
- /bin/rm
  /bin/rm -rf /tmp/selfgz341
  2⤵
  - Writes file to tmp directory
  PID:448

/usr/bin/which
which md5sum
1⤵
- Write file to user bin folder
PID:353

/usr/bin/which
which shasum
1⤵
- Write file to user bin folder
PID:355

/usr/bin/which
which sha256sum
1⤵
- Write file to user bin folder
PID:357

/usr/bin/wc
wc -c
1⤵
PID:360

/usr/bin/tr
tr -d " "
1⤵
PID:361

/usr/bin/head
head -n 587 ./installer.run
1⤵
PID:359

/usr/bin/cut
cut "-d " -f1
1⤵
PID:364

/usr/bin/cut
cut "-d " -f1
1⤵
PID:369

/usr/bin/cut
cut "-d " -f1
1⤵
PID:374

/usr/bin/cut
cut -b-32
1⤵
PID:378

/usr/bin/expr
expr 4194304 / 4
1⤵
PID:380

/usr/bin/md5sum
/usr/bin/md5sum
1⤵
PID:381

/usr/bin/expr
expr 1048576 / 4
1⤵
PID:382

/usr/bin/expr
expr 262144 / 4
1⤵
PID:383

/usr/bin/expr
expr 87287 / 65536
1⤵
PID:384

/usr/bin/expr
expr 87287 "%" 65536
1⤵
PID:385

/bin/dd
dd "ibs=14819" "skip=1"
1⤵
PID:388

/usr/bin/expr
expr 0 + 65536
1⤵
PID:389

/bin/dd
dd "bs=65536" "count=1"
1⤵
PID:390

/usr/bin/expr
expr 87287 / 100
1⤵
PID:391

/usr/bin/expr
expr 65536 / 872
1⤵
PID:392

/usr/bin/expr
expr 65536 + 65536
1⤵
PID:393

/bin/dd
dd "bs=21751" "count=1"
1⤵
PID:394

/usr/bin/head
head -n 587 ./installer.run
1⤵
PID:399

/usr/bin/tr
tr -d " "
1⤵
PID:401

/usr/bin/wc
wc -c
1⤵
PID:400

/usr/bin/tail
tail -1
1⤵
PID:405

/bin/df
df -kP /tmp/selfgz341
1⤵
- Reads runtime system information
- Writes file to tmp directory
PID:404

/usr/bin/awk
awk "{ if (\$4 ~ /%/) {print \$3} else {print \$4} }"
1⤵
PID:406

/usr/bin/expr
expr 4194304 / 4
1⤵
PID:410

/bin/gzip
gzip -cd
1⤵
PID:411

/bin/tar
tar xpvf -
1⤵
- Reads runtime system information
PID:412

/usr/bin/expr
expr 1048576 / 4
1⤵
PID:413

/usr/bin/expr
expr 262144 / 4
1⤵
PID:414

/usr/bin/expr
expr 87287 / 65536
1⤵
PID:415

/usr/bin/expr
expr 87287 "%" 65536
1⤵
PID:416

/bin/dd
dd "ibs=14819" "skip=1"
1⤵
PID:418

/usr/bin/expr
expr 0 + 65536
1⤵
PID:419

/bin/dd
dd "bs=65536" "count=1"
1⤵
PID:420

/usr/bin/expr
expr 87287 / 100
1⤵
PID:421

/usr/bin/expr
expr 65536 / 872
1⤵
PID:422

/usr/bin/expr
expr 65536 + 65536
1⤵
PID:423

/bin/dd
dd "bs=21751" "count=1"
1⤵
PID:424

/usr/bin/id
id -u
1⤵
- Reads runtime system information
PID:426

/bin/chown
chown -R 0 .
1⤵
PID:427

/usr/bin/id
id -g
1⤵
- Reads runtime system information
PID:428

/bin/cat
cat
1⤵
PID:444

/usr/bin/whoami
whoami
1⤵
PID:443

/usr/bin/whoami
whoami
1⤵
PID:442

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hijack Execution Flow

T1574

Privilege Escalation

Hijack Execution Flow

T1574

Defense Evasion

Hijack Execution Flow

T1574

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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