b7dd3bce3ebfbc2d5e3a9f00d47f27cb6a5895c4618c878e314e573a7c216df1

Analysis

max time kernel
149s
max time network
144s
platform
ubuntu-22.04_amd64
resource
ubuntu2204-amd64-20240611-en
resource tags

arch:amd64arch:i386image:ubuntu2204-amd64-20240611-enkernel:5.15.0-105-genericlocale:en-usos:ubuntu-22.04-amd64system
submitted
04-09-2024 20:01

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General

Target

The-MALWARE-Repo-master/Botnets/FritzFrog/6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
Size

8.7MB
MD5

3fe7b88a9ba6c5acee4faae760642b78
SHA1

bae245bc98c516604838c6ce5a233f066de44a50
SHA256

6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
SHA512

02abc8d4fe280306a9ac6a25d28cf174a8d51a43d98b6837bc129701d8c0ab486eebaeef11062b58c455627d4de7c8782b3828aa02891fe439ca1ca617038f95
SSDEEP

98304:g4K0/V2eKEDj+VK61qXXiQqwMwUa/f0OstejSUVv7Xk:g4K0/V2eKM+D4SQbMwX/f0Oskz

Score

8^/10

antivm defense_evasion discovery persistence privilege_escalation

Malware Config

Signatures

Adds new SSH keys 1 TTPs 1 IoCs
Linux special file to hold SSH keys. The threat actor may add new keys for further remote access.
persistence privilege_escalation

SSH Authorized Keys
T1098.004

Processes:

6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c

description ioc process

File opened for modification /root/.ssh/authorized_keys 6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
Deletes itself 1 IoCs

Processes:

pid

1566

description	ioc	process
File opened for modification	/root/.ssh/authorized_keys	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c

pid
1566

Deletes log files 1 TTPs 1 IoCs

Deletes log files on the system.

defense_evasion

Clear Linux or Mac System Logs

T1070.002

Processes:

6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c

description	ioc	process
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c

Enumerates running processes
Discovers information about currently running processes on the system
Checks CPU configuration 1 TTPs 1 IoCs
Checks CPU information which indicate if the system is a virtual machine.
antivm

System Checks
T1497.001

Processes:

cat

description ioc process

File opened for reading /proc/cpuinfo cat

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

Reads CPU attributes 1 TTPs 30 IoCs

discovery

System Information Discovery

T1082

Processes:

freeuptimefreeuptimefreefreefreeuptimefreeuptimefreeuptimeuptimefreeuptimeuptimefreeuptimefreeuptimeuptimefreefreeuptimefreeuptimefreeuptimeuptimefree

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	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	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	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	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	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

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

Processes:

6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69cuptimeuptimeuptimefreefreefreeuptimefreefreeuptimefreefreeuptimeuptime

description	ioc	process
File opened for reading	/proc/86/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/1203/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/788/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/720/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/1445/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/85/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/93/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/102/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/195/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/675/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/92/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/1251/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1104/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/225/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/263/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/422/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/1169/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/79/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/612/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/18/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/263/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/986/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1041/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/85/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/1173/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/212/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/412/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/6/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/1357/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/80/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/1287/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/728/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/self/auxv	uptime
File opened for reading	/proc/93/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/412/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/518/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1296/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/204/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/497/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/23/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/75/stat	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1121/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1137/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/523/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/99/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1152/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/1574/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/637/cmdline	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c

Writes file to tmp directory 1 IoCs

Malware often drops required files in the /tmp directory.

Processes:

6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c

description	ioc	process
File opened for modification	/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/nc	6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c

/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c
1⤵
- Adds new SSH keys
- Deletes log files
- Reads runtime system information
- Writes file to tmp directory
PID:1563

/usr/bin/uname
uname -a
2⤵
PID:1573

/usr/bin/cat
cat /proc/cpuinfo
2⤵
- Checks CPU configuration
PID:1577

/usr/bin/cat
cat /etc/issue
2⤵
PID:1578

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1579

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1580

/usr/bin/journalctl
journalctl -S "@0" -u sshd
2⤵
PID:1581

/usr/bin/cat
cat "/var/log/auth*"
2⤵
PID:1582

/usr/bin/zcat
zcat "/var/log/auth*"
2⤵
PID:1583

/usr/local/sbin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1583

/usr/local/bin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1583

/usr/sbin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1583

/usr/bin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1583

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1584

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1585

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1586

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1587

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1590

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1591

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1592

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1593

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1594

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1595

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1602

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1603

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1604

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1605

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1606

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1607

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1608

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1609

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1610

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1611

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1612

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1613

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1617

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1618

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1619

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1620

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1621

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1622

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Account Manipulation

T1098

SSH Authorized Keys

T1098.004

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

Clear Linux or Mac System Logs

T1070.002

Virtualization/Sandbox Evasion

T1497

System Checks

T1497.001

Credential Access

Discovery

Virtualization/Sandbox Evasion

T1497

System Checks

T1497.001

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/nc
Filesize
8.7MB

MD5
3fe7b88a9ba6c5acee4faae760642b78

SHA1
bae245bc98c516604838c6ce5a233f066de44a50

SHA256
6fe6808b9cfe654f526108ec61cb5211bb6601d28e192cadf06102073b54f69c

SHA512
02abc8d4fe280306a9ac6a25d28cf174a8d51a43d98b6837bc129701d8c0ab486eebaeef11062b58c455627d4de7c8782b3828aa02891fe439ca1ca617038f95

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