b7dd3bce3ebfbc2d5e3a9f00d47f27cb6a5895c4618c878e314e573a7c216df1

Analysis

max time kernel
159s
max time network
157s
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/3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
Size

8.7MB
MD5

8f0cb7af15afe40ed85f35e1b40b8f38
SHA1

525f97d6e7e3cbb611a1cf37e955c0656f4b3c06
SHA256

3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
SHA512

bd9e97b4042d89e081eced5781149b0d8e28a6e9d35c2a449a21aee26765ed8eea560434ba5e9a897c4e4c89d7a2b8997e31ad4ac2202a940b8731a5f447170d
SSDEEP

98304:xFjhn+LznCFajBKs/Q1N4KGWISZOLor5lkFIGGw+Aw:Hjhn+HCS4s41N4KGWISZd5lrGG

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:

3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5

description	ioc	process
File opened for modification	/root/.ssh/authorized_keys	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for modification	/root/.ssh/authorized_keys

Deletes itself 1 IoCs

Processes:

3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5

pid process

1860 3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
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
1860	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5

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:

3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5

description	ioc	process
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5

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

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

Processes:

freeuptimefreefreefreefreeuptimeuptimeuptimefreeuptimeuptimefreefreefreeuptimeuptimeuptimefreeuptimeuptimefreeuptimefreeuptimefreeuptimefreefreeuptime

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	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	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
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	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

Enumerates kernel/hardware configuration 1 TTPs 2 IoCs

Reads contents of /sys virtual filesystem to enumerate system information.

System Information Discovery

T1082

Processes:

3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5journalctl

description	ioc	process
File opened for reading	/sys/kernel/mm/transparent_hugepage/hpage_pmd_size	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
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:

free3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5freefreeuptimefree

description	ioc	process
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/1736/cmdline
File opened for reading	/proc/1509/stat
File opened for reading	/proc/685/stat
File opened for reading	/proc/404/stat	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/518/stat	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/700/stat	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/174/cmdline
File opened for reading	/proc/1048/cmdline	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/1407/cmdline
File opened for reading	/proc/312/cmdline	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/1860/cmdline
File opened for reading	/proc/518/cmdline
File opened for reading	/proc/1414/stat	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/177/stat	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/790/stat	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/90/cmdline	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/77/cmdline
File opened for reading	/proc/166/stat
File opened for reading	/proc/5/stat
File opened for reading	/proc/504/stat	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/458/stat	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/508/stat	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/1131/cmdline
File opened for reading	/proc/265/stat
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/163/stat	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/1089/cmdline
File opened for reading	/proc/1126/cmdline
File opened for reading	/proc/92/cmdline
File opened for reading	/proc/618/cmdline	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/645/cmdline	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/11/cmdline
File opened for reading	/proc/89/cmdline
File opened for reading	/proc/785/stat
File opened for reading	/proc/172/stat	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/77/stat
File opened for reading	/proc/952/stat	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/923/cmdline	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/177/cmdline
File opened for reading	/proc/272/cmdline
File opened for reading	/proc/834/cmdline
File opened for reading	/proc/242/stat
File opened for reading	/proc/1004/cmdline
File opened for reading	/proc/86/cmdline	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/991/stat
File opened for reading	/proc/685/stat	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/1441/cmdline
File opened for reading	/proc/169/stat
File opened for reading	/proc/899/cmdline	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/675/stat
File opened for reading	/proc/964/stat
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/980/stat	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/538/cmdline	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/538/stat
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/1124/stat
File opened for reading	/proc/1503/stat
File opened for reading	/proc/505/cmdline	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/87/cmdline	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
File opened for reading	/proc/172/cmdline	3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5

/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
1⤵
- Adds new SSH keys
- Deletes itself
- Deletes log files
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:1860
- /usr/bin/uname
  uname -a
  2⤵
  PID:1900
- /usr/bin/cat
  cat /proc/cpuinfo
  2⤵
  - Checks CPU configuration
  PID:1913
- /usr/bin/cat
  cat /etc/issue
  2⤵
  PID:1914
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:1915
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:1916
- /usr/bin/cat
  cat "/var/log/auth*"
  2⤵
  PID:1919
- /usr/bin/zcat
  zcat "/var/log/auth*"
  2⤵
  PID:1920
- /usr/local/sbin/gzip
  gzip -cd "/var/log/auth*"
  2⤵
  PID:1920
- /usr/local/bin/gzip
  gzip -cd "/var/log/auth*"
  2⤵
  PID:1920
- /usr/sbin/gzip
  gzip -cd "/var/log/auth*"
  2⤵
  PID:1920
- /usr/bin/gzip
  gzip -cd "/var/log/auth*"
  2⤵
  PID:1920
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:2079
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2080
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2081
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2082
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:2093
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2094
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2095
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2096
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2097
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2098
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2099
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2100
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2106
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2107

/usr/bin/journalctl
journalctl -S "@0" -u sshd
1⤵
- Reads EFI boot settings
- Enumerates kernel/hardware configuration
PID:1917

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1972

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1973

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2083

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2084

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2091

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2092

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2101

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2102

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2104

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2105

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2108

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2109

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2110

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2111

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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