2d9bb4e3fddfe5dc51c54cba74a1eb594c7be9d34774524d972350edd85e6499

Resubmissions

08-02-2024 01:32

240208-bx7pqsbg96 10

27-01-2024 14:19

240127-rmwgqadhc4 10

Analysis

max time kernel
154s
max time network
157s
platform
ubuntu-18.04_amd64
resource
ubuntu1804-amd64-20231215-en
resource tags

arch:amd64arch:i386image:ubuntu1804-amd64-20231215-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
submitted
27-01-2024 14:19

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General

Target

The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/30c150419000d27dafcd5d00702411b2b2
Size

8.6MB
MD5

819b0fdb2b9c8a440b734a7b72522f12
SHA1

f3aff7e1c44d21508eb60797211570c84a53597a
SHA256

30c150419000d27dafcd5d00702411b2b23b0f5d7e4d0cc729a7d63b2e460a01
SHA512

fee2c0dbbc91e2486e409e8b6a877c6ec500e6c7c0491d4c44d37006c30de79b95dd4640c7c8c8efcc920abccbdb659a590fde1e2526126279b7486778d08b5a
SSDEEP

98304:zhPTaS9ki2kJxOU/ci9Z6uHFg3+QIEvRihdF7Xk:dPTaS9kitnEi9Z6uHq3+XE8z

Score

8^/10

antivm persistence

Malware Config

Signatures

Adds new SSH keys 2 IoCs

Linux special file to hold SSH keys. The threat actor may add new keys for further remote access.

persistence

Processes:

30c150419000d27dafcd5d00702411b2b2

description	ioc
File opened for modification	/root/.ssh/authorized_keys
File opened for modification	/root/.ssh/authorized_keys	30c150419000d27dafcd5d00702411b2b2

Deletes itself 1 IoCs

Processes:

pid

1540
Checks CPU configuration 1 TTPs 1 IoCs
Checks CPU information which indicate if the system is a virtual machine.
antivm

Virtualization/Sandbox Evasion
T1497

Processes:

cat

description ioc process

File opened for reading /proc/cpuinfo cat

pid
1540

description	ioc	process
File opened for reading	/proc/cpuinfo	cat

Deletes log files 1 TTPs 2 IoCs

Deletes log files on the system.

Indicator Removal

T1070

Processes:

30c150419000d27dafcd5d00702411b2b2

description	ioc	process
File deleted	/var/log/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/30c150419000d27dafcd5d00702411b2b2	30c150419000d27dafcd5d00702411b2b2
File deleted	/var/log/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/30c150419000d27dafcd5d00702411b2b2

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

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

Processes:

uptimeuptimeuptimeuptimefreeuptimeuptimefreeuptimefreefreefreeuptimeuptimeuptimefreefreeuptimeuptimefreefreefreefreefreeuptimeuptimefreefreefreeuptime

description	ioc	process
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	free
File opened for reading	/sys/devices/system/cpu/online	uptime

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

Processes:

30c150419000d27dafcd5d00702411b2b2uptimeuptimefreeuptimefreeuptimefreefreefreeuptime

description	ioc	process
File opened for reading	/proc/1081/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/502/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/1017/cmdline
File opened for reading	/proc/178/cmdline
File opened for reading	/proc/1142/stat
File opened for reading	/proc/1189/stat
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/30/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/6/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/1537/stat
File opened for reading	/proc/1383/cmdline
File opened for reading	/proc/439/cmdline
File opened for reading	/proc/32/stat
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/1088/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/439/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/26/stat
File opened for reading	/proc/31/stat
File opened for reading	/proc/82/stat
File opened for reading	/proc/973/stat
File opened for reading	/proc/9/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/946/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/89/cmdline
File opened for reading	/proc/1554/stat
File opened for reading	/proc/1138/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/1052/stat
File opened for reading	/proc/164/stat
File opened for reading	/proc/1264/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/32/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/1130/cmdline
File opened for reading	/proc/171/cmdline
File opened for reading	/proc/265/cmdline
File opened for reading	/proc/874/cmdline
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/1155/cmdline
File opened for reading	/proc/176/cmdline
File opened for reading	/proc/584/stat
File opened for reading	/proc/1202/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/180/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/23/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/1189/cmdline
File opened for reading	/proc/722/cmdline
File opened for reading	/proc/1130/stat
File opened for reading	/proc/1263/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/1105/cmdline
File opened for reading	/proc/477/cmdline
File opened for reading	/proc/497/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/83/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/167/cmdline
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/275/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/1170/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/177/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/179/stat	30c150419000d27dafcd5d00702411b2b2
File opened for reading	/proc/6/cmdline
File opened for reading	/proc/1533/stat
File opened for reading	/proc/89/stat

/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/30c150419000d27dafcd5d00702411b2b2
/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/30c150419000d27dafcd5d00702411b2b2
1⤵
- Adds new SSH keys
- Deletes log files
- Reads runtime system information
PID:1537
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:1558
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:1559
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:1564
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:1565
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:1568
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:1569
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:1572
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:1573
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:1576
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:1577
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:1580
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:1581

/bin/uname
uname -a
1⤵
PID:1546

/bin/cat
cat /proc/cpuinfo
1⤵
- Checks CPU configuration
PID:1550

/bin/cat
cat /etc/issue
1⤵
PID:1551

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1552

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1553

/bin/journalctl
journalctl -S "@0" -u sshd
1⤵
PID:1554

/bin/cat
cat "/var/log/auth*"
1⤵
PID:1556

/bin/zcat
zcat "/var/log/auth*"
1⤵
PID:1557

/bin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1557

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1560

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1561

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1566

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1567

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1570

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1571

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1574

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1575

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1578

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1579

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1582

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1583

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1584

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1585

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1586

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1587

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

/root/.ssh/authorized_keys

Filesize
381B

MD5
9da18d38b6dd4c4aa84642378d63fa89

SHA1
c5a976691e4b5963b5e760044f22cc9685268db6

SHA256
43062900b2539d8d1f67f30fa7042c56b53541f63875b5f0de5d8fbde0e0a8bf

SHA512
222b20b5b2ff8956c13dbac1f8d3f81435613b751913d65f4c4082ea9c1a7c8ae91be17a24ef4ae0c708bfe09daab552bb209615714d70acfaaed89c536c71b3

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