105e32c8ef13d4d001923c1a43a8849d069fc4adebe48e5e6a9e726eb605ce31

Analysis

max time kernel
27s
platform
debian-9_mips
resource
debian9-mipsbe-20240226-en
resource tags

arch:mipsimage:debian9-mipsbe-20240226-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipssystem
submitted
07-03-2024 18:02

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General

Target

.rsync/b/a
Size

157B
MD5

17dfec62acb9bc298bb333fbe391f486
SHA1

960fdc0a9c8dd4879c96ec76f69a9dedc6ec9795
SHA256

dc43fdfbb5f7e8ecc80353dcd85889c0c08483c99acbce35b3ed8f399c936920
SHA512

21d49249ca656d3f6ce7a77876796590ae66d31963a6cdf65bb294ca45372e68686f8f7fd846035ed53f1155962447a8054bf2ea081e02fbb4b3fa1b6e376881

Score

6^/10

Malware Config

Signatures

Enumerates running processes
Discovers information about currently running processes on the system

Reads CPU attributes 1 TTPs 19 IoCs

System Information Discovery

T1082

description	ioc	Process
File opened for reading	/sys/devices/system/cpu/online	pkill
File opened for reading	/sys/devices/system/cpu/online	pkill
File opened for reading	/sys/devices/system/cpu/online	ps
File opened for reading	/sys/devices/system/cpu/online	pkill
File opened for reading	/sys/devices/system/cpu/online	pkill
File opened for reading	/sys/devices/system/cpu/online	pkill
File opened for reading	/sys/devices/system/cpu/online	ps
File opened for reading	/sys/devices/system/cpu/online	ps
File opened for reading	/sys/devices/system/cpu/online	ps
File opened for reading	/sys/devices/system/cpu/online	ps
File opened for reading	/sys/devices/system/cpu/online	pkill
File opened for reading	/sys/devices/system/cpu/online	pkill
File opened for reading	/sys/devices/system/cpu/online	ps
File opened for reading	/sys/devices/system/cpu/online	ps
File opened for reading	/sys/devices/system/cpu/online	ps
File opened for reading	/sys/devices/system/cpu/online	pkill
File opened for reading	/sys/devices/system/cpu/online	pkill
File opened for reading	/sys/devices/system/cpu/online	ps
File opened for reading	/sys/devices/system/cpu/online	ps

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

description	ioc	Process
File opened for reading	/proc/375/stat	killall
File opened for reading	/proc/467/status	pkill
File opened for reading	/proc/79/status	pkill
File opened for reading	/proc/13/status	pkill
File opened for reading	/proc/71/cmdline	pkill
File opened for reading	/proc/71/stat	ps
File opened for reading	/proc/5/status	ps
File opened for reading	/proc/385/stat	ps
File opened for reading	/proc/726/cmdline	pkill
File opened for reading	/proc/1/stat	ps
File opened for reading	/proc/74/stat	killall
File opened for reading	/proc/83/status	pkill
File opened for reading	/proc/21/status	ps
File opened for reading	/proc/502/stat	ps
File opened for reading	/proc/18/status	ps
File opened for reading	/proc/71/status	pkill
File opened for reading	/proc/37/cmdline	ps
File opened for reading	/proc/70/status	ps
File opened for reading	/proc/74/stat	ps
File opened for reading	/proc/17/cmdline	ps
File opened for reading	/proc/16/stat	killall
File opened for reading	/proc/688/cmdline	pkill
File opened for reading	/proc/502/stat	ps
File opened for reading	/proc/724/stat	ps
File opened for reading	/proc/11/status	pkill
File opened for reading	/proc/76/cmdline	pkill
File opened for reading	/proc/726/cmdline	pkill
File opened for reading	/proc/325/status	pkill
File opened for reading	/proc/324/cmdline	pkill
File opened for reading	/proc/691/stat	ps
File opened for reading	/proc/782/status	ps
File opened for reading	/proc/83/status	ps
File opened for reading	/proc/694/stat	ps
File opened for reading	/proc/4/status	pkill
File opened for reading	/proc/467/stat	killall
File opened for reading	/proc/79/status	pkill
File opened for reading	/proc/16/status	ps
File opened for reading	/proc/689/stat	ps
File opened for reading	/proc/19/cmdline	pkill
File opened for reading	/proc/693/cmdline	ps
File opened for reading	/proc/77/cmdline	ps
File opened for reading	/proc/798/status	ps
File opened for reading	/proc/14/cmdline	pkill
File opened for reading	/proc/24/stat	killall
File opened for reading	/proc/697/status	pkill
File opened for reading	/proc/763/stat	ps
File opened for reading	/proc/8/cmdline	pkill
File opened for reading	/proc/11/stat	killall
File opened for reading	/proc/11/status	pkill
File opened for reading	/proc/4/cmdline	pkill
File opened for reading	/proc/726/status	pkill
File opened for reading	/proc/325/status	pkill
File opened for reading	/proc/115/cmdline	ps
File opened for reading	/proc/330/status	ps
File opened for reading	/proc/17/cmdline	pkill
File opened for reading	/proc/693/stat	killall
File opened for reading	/proc/374/stat	killall
File opened for reading	/proc/374/stat	ps
File opened for reading	/proc/4/status	ps
File opened for reading	/proc/37/cmdline	ps
File opened for reading	/proc/72/status	ps
File opened for reading	/proc/meminfo	ps
File opened for reading	/proc/327/stat	killall
File opened for reading	/proc/20/status	ps

Writes file to tmp directory 3 IoCs

Malware often drops required files in the /tmp directory.

description	ioc	Process
File opened for modification	/tmp/.rsync/b/dir.dir	a
File opened for modification	/tmp/.rsync/b/sync	a
File opened for modification	/tmp/.rsync/b/.out	stop

/tmp/.rsync/b/a
/tmp/.rsync/b/a
1⤵
- Writes file to tmp directory
PID:711
- /bin/cat
  cat dir.dir
  2⤵
  PID:713
- /tmp/.rsync/b/stop
  ./stop
  2⤵
  PID:716
- /bin/chmod
  chmod u+x sync
  2⤵
  PID:718
- /bin/chmod
  chmod u+x stop
  2⤵
  PID:720
- /bin/chmod
  chmod u+x ps
  2⤵
  PID:722
- /bin/chmod
  chmod u+x run
  2⤵
  PID:723
- /tmp/.rsync/b/run
  ./run
  2⤵
  PID:724
- - /usr/bin/nohup
    nohup ./stop
    3⤵
    PID:725
- - /bin/sleep
    sleep 5
    3⤵
    PID:726
- - /tmp/.rsync/b/stop
    ./stop
    3⤵
    - Writes file to tmp directory
    PID:725
  - - /usr/bin/killall
      killall -9 rsync
      4⤵
      PID:728
  - - /usr/bin/killall
      killall -9 sync
      4⤵
      Reads runtime system information
      PID:731
  - - /usr/bin/killall
      killall -9 perl
      4⤵
      PID:732
  - - /usr/bin/killall
      killall -9 ps
      4⤵
      Reads runtime system information
      PID:733
  - - /usr/bin/killall
      killall -9 pool
      4⤵
      Reads runtime system information
      PID:735
  - - /usr/bin/killall
      killall -9 nginx
      4⤵
      PID:736
  - - /usr/bin/killall
      killall -9 ecryptfs
      4⤵
      Reads runtime system information
      PID:737
  - - /usr/bin/killall
      killall -9 xmr
      4⤵
      Reads runtime system information
      PID:738
  - - /usr/bin/pkill
      pkill -9 ps
      4⤵
      Reads CPU attributes
      Reads runtime system information
      PID:740
  - - /usr/bin/pkill
      pkill -9 pool
      4⤵
      Reads CPU attributes
      Reads runtime system information
      PID:741
  - - /usr/bin/pkill
      pkill -9 nginx
      4⤵
      Reads CPU attributes
      Reads runtime system information
      PID:742
  - - /usr/bin/pkill
      pkill -9 ecryptfs
      4⤵
      Reads CPU attributes
      Reads runtime system information
      PID:743
  - - /usr/bin/pkill
      pkill -9 xmr
      4⤵
      Reads CPU attributes
      Reads runtime system information
      PID:744
  - - /usr/bin/pkill
      pkill -9 sync
      4⤵
      Reads CPU attributes
      Reads runtime system information
      PID:745
  - - /usr/bin/pkill
      pkill -9 rsync
      4⤵
      Reads CPU attributes
      Reads runtime system information
      PID:799
  - - /usr/bin/pkill
      pkill -9 perl
      4⤵
      Reads CPU attributes
      PID:800
  - - /usr/bin/pkill
      pkill -9 ps
      4⤵
      Reads CPU attributes
      Reads runtime system information
      PID:801
  - - /bin/rm
      rm -rf .proc .out
      4⤵
      PID:802
- - /usr/bin/base64
    base64 --decode
    3⤵
    PID:752
- - /usr/bin/perl
    perl
    3⤵
    PID:753
- - /usr/bin/base64
    base64 --decode
    3⤵
    PID:785
- - /usr/bin/perl
    perl
    3⤵
    PID:786

/bin/ps
ps x
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:747

/bin/grep
grep ps
1⤵
PID:748

/bin/grep
grep -v grep
1⤵
PID:749

/usr/bin/awk
awk "{print \$1}"
1⤵
PID:750

/bin/ps
ps x
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:755

/bin/grep
grep sync
1⤵
PID:756

/bin/grep
grep -v grep
1⤵
PID:757

/usr/bin/awk
awk "{print \$1}"
1⤵
PID:758

/bin/ps
ps x
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:760

/bin/grep
grep nginx
1⤵
PID:761

/bin/grep
grep -v grep
1⤵
PID:762

/usr/bin/awk
awk "{print \$1}"
1⤵
PID:763

/bin/ps
ps x
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:765

/bin/grep
grep ecryptfs
1⤵
PID:766

/bin/grep
grep -v grep
1⤵
PID:767

/usr/bin/awk
awk "{print \$1}"
1⤵
PID:768

/bin/ps
ps x
1⤵
- Reads CPU attributes
PID:770

/bin/grep
grep xmr
1⤵
PID:771

/bin/grep
grep -v grep
1⤵
PID:772

/usr/bin/awk
awk "{print \$1}"
1⤵
PID:773

/bin/ps
ps x
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:775

/bin/grep
grep perl
1⤵
PID:776

/bin/grep
grep -v grep
1⤵
PID:777

/usr/bin/awk
awk "{print \$1}"
1⤵
PID:778

/bin/ps
ps x
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:780

/bin/grep
grep rsync
1⤵
PID:781

/bin/grep
grep -v grep
1⤵
PID:782

/usr/bin/awk
awk "{print \$1}"
1⤵
PID:783

/bin/ps
ps -ef
1⤵
- Reads CPU attributes
PID:788

/bin/grep
grep rsync
1⤵
PID:789

/usr/bin/awk
awk "{print \$2}"
1⤵
PID:790

/bin/ps
ps -ef
1⤵
- Reads CPU attributes
PID:792

/bin/grep
grep sync
1⤵
PID:793

/usr/bin/awk
awk "{print \$2}"
1⤵
PID:794

/bin/ps
ps -ef
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:796

/bin/grep
grep ps
1⤵
PID:797

/usr/bin/awk
awk "{print \$2}"
1⤵
PID:798

Network

MITRE ATT&CK Enterprise v15

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

/tmp/.rsync/b/dir.dir

Filesize
14B

MD5
e21fb1889e57316ccbd97f98e1282a54

SHA1
ee8de521fb7ae11f81615ce31a45b5f7a79feee8

SHA256
8e0465a977658aca8fe06bec84742ed7c298db88cba64fc87de85409c6c909e8

SHA512
3ac5bf18363442ea8e4f478b2595a5e13199d80378c82f2ffeacb03cf64cf30c5e82c9a618d2a0f2d9d5386aeb1576e154e654eb20fc6967a43472f3f5047445

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/tmp/.rsync/b/sync

Filesize
33B

MD5
a0eea5d0b1c4743cc7b8c798399581e0

SHA1
bf30ba5824c9ec612aa4654eb895e3cb738b4e18

SHA256
7602dd04cbfa214345d0ae0b2ee26ed6475ea4d9053575cb99e29b956f536d0e

SHA512
9e70bc0608f42b83712d5e2911d21e6ab627c830d0ae4b8fa5e0eeea6555bc4cce49d7fafdea28a1888b55b28461cab34153dee3746bc084c1e8a296f849d06f

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