b7dd3bce3ebfbc2d5e3a9f00d47f27cb6a5895c4618c878e314e573a7c216df1

Analysis

max time kernel
153s
max time network
151s
platform
ubuntu-20.04_amd64
resource
ubuntu2004-amd64-20240221-en
resource tags

arch:amd64arch:i386image:ubuntu2004-amd64-20240221-enkernel:5.4.0-169-genericlocale:en-usos:ubuntu-20.04-amd64system
submitted
01-03-2024 21:28

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General

Target

The-MALWARE-Repo-master/Botnets/FritzFrog/9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
Size

8.6MB
MD5

4842d5cc29c97aa611fba5ca07b060a5
SHA1

f93772038406f28fa4ca1cfb23349193562414b2
SHA256

9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
SHA512

cf1cb3f0291f3e0c3b47ff3ee9074b624e2d9781f9637d14ede0628ebb4b8b0fe13e16583f6a933a3e20872ec084dc812237f021757efe2a6d527a0a1723b5c8
SSDEEP

98304:JcZJWD3qZL7I9lysBfU9OWQcIImfWoezuA+dTlwO0Fz7Xk:JcZJWTqZLGlHsHQl3fNezuAI5g

Score

8^/10

antivm infostealer 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:

9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948

description	ioc	process
File opened for modification	/root/.ssh/authorized_keys	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for modification	/root/.ssh/authorized_keys

Deletes itself 1 IoCs

Processes:

9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948

pid process

1756 9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
Reads EFI boot settings 1 IoCs
Reads EFI boot settings from the efivars filesystem, may contain security secrets or sensitive data.
infostealer

Processes:

journalctl

description ioc process

File opened for reading /sys/firmware/efi/efivars/SystemdOptions-8cf2644b-4b0b-428f-9387-6d876050dc67 journalctl
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	process
1756	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948

description	ioc	process
File opened for reading	/sys/firmware/efi/efivars/SystemdOptions-8cf2644b-4b0b-428f-9387-6d876050dc67	journalctl

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:

9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948

description	ioc	process
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948

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

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

Processes:

freeuptimefreeuptimeuptimefreeuptimefreeuptimeuptimeuptimefreeuptimefreefreeuptimeuptimefreeuptimefreefreefreefreeuptimefreeuptimeuptimeuptimefreefree

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

Enumerates kernel/hardware configuration 1 TTPs 1 IoCs
Reads contents of /sys virtual filesystem to enumerate system information.

System Information Discovery
T1082

Processes:

journalctl

description ioc process

File opened for reading /sys/firmware/efi/efivars/SystemdOptions-8cf2644b-4b0b-428f-9387-6d876050dc67 journalctl

description	ioc	process
File opened for reading	/sys/firmware/efi/efivars/SystemdOptions-8cf2644b-4b0b-428f-9387-6d876050dc67	journalctl

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

Processes:

9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948freeuptimefreefreeuptimeuptime

description	ioc
File opened for reading	/proc/439/cmdline
File opened for reading	/proc/15/stat
File opened for reading	/proc/1023/cmdline	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/694/cmdline	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/1428/stat
File opened for reading	/proc/15/stat	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/874/stat	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/1305/cmdline
File opened for reading	/proc/1293/stat
File opened for reading	/proc/587/stat
File opened for reading	/proc/105/stat	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/164/stat	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/1045/stat
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/1117/cmdline	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/161/stat
File opened for reading	/proc/4/stat
File opened for reading	/proc/6/stat
File opened for reading	/proc/1924/stat
File opened for reading	/proc/1141/cmdline
File opened for reading	/proc/169/stat
File opened for reading	/proc/949/stat	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/17/cmdline
File opened for reading	/proc/507/cmdline
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/24/stat	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/616/cmdline	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/616/cmdline
File opened for reading	/proc/84/cmdline
File opened for reading	/proc/960/cmdline
File opened for reading	/proc/1081/cmdline	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/1293/cmdline	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/71/cmdline	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/1421/stat
File opened for reading	/proc/1997/stat
File opened for reading	/proc/523/cmdline	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/3/cmdline
File opened for reading	/proc/165/stat	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/10/cmdline	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/580/stat	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/93/stat	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/1179/cmdline	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/78/cmdline
File opened for reading	/proc/102/stat
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/1095/stat	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/5/stat	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/162/cmdline	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/1041/stat
File opened for reading	/proc/200/stat	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/167/cmdline	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/1431/cmdline
File opened for reading	/proc/1521/cmdline
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/539/stat	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/163/cmdline	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/118/cmdline
File opened for reading	/proc/11/stat	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/84/cmdline	9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
File opened for reading	/proc/1419/cmdline
File opened for reading	/proc/451/stat
File opened for reading	/proc/899/cmdline

/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
1⤵
- Adds new SSH keys
- Deletes itself
- Deletes log files
- Reads runtime system information
PID:1756
- /usr/bin/uname
  uname -a
  2⤵
  PID:1769
- /usr/bin/cat
  cat /proc/cpuinfo
  2⤵
  - Checks CPU configuration
  PID:1773
- /usr/bin/cat
  cat /etc/issue
  2⤵
  PID:1774
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:1775
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:1776
- /usr/bin/journalctl
  journalctl -S "@0" -u sshd
  2⤵
  - Reads EFI boot settings
  - Enumerates kernel/hardware configuration
  PID:1777
- /usr/bin/cat
  cat "/var/log/auth*"
  2⤵
  PID:1778
- /usr/bin/zcat
  zcat "/var/log/auth*"
  2⤵
  PID:1779
- /usr/local/sbin/gzip
  gzip -cd "/var/log/auth*"
  2⤵
  PID:1779
- /usr/local/bin/gzip
  gzip -cd "/var/log/auth*"
  2⤵
  PID:1779
- /usr/sbin/gzip
  gzip -cd "/var/log/auth*"
  2⤵
  PID:1779
- /usr/bin/gzip
  gzip -cd "/var/log/auth*"
  2⤵
  PID:1779
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:1936
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:1937
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2103
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2104
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2113
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:2114
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2115
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2116
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2119
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2120
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2123
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2124
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2129
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2130

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1938

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1939

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2010

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2011

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2105

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2106

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2117

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2118

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2121

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2122

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2125

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2126

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2127

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2128

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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