b7dd3bce3ebfbc2d5e3a9f00d47f27cb6a5895c4618c878e314e573a7c216df1

Analysis

max time kernel
149s
max time network
141s
platform
ubuntu-22.04_amd64
resource
ubuntu2204-amd64-20240522.1-en
resource tags

arch:amd64arch:i386image:ubuntu2204-amd64-20240522.1-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/7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
Size

8.7MB
MD5

d4e533f9c11b5cc9e755d94c1315553a
SHA1

9e15020cd2688b537bae18e5f291ee8cbe9a85e7
SHA256

7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
SHA512

149226355b2e5c3fac403289b5e66bd4164a7aee76d8dc8f1d698c509db7a081bad9d4172cc950bb0e6e6909e0073d551dcde82cbeaaf61a9c1b02c9ba48fb38
SSDEEP

98304:H27or8Dynb9c4EHv9/fW/NQXPvTCaedQuMBiHAUU4C7Xk:H27or8DyO4UnwQfvTCXdQuMoUj

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:

7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6

description ioc process

File opened for modification /root/.ssh/authorized_keys 7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
Deletes itself 1 IoCs

Processes:

pid

1572

description	ioc	process
File opened for modification	/root/.ssh/authorized_keys	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6

pid
1572

Deletes log files 1 TTPs 1 IoCs

Deletes log files on the system.

defense_evasion

Clear Linux or Mac System Logs

T1070.002

Processes:

7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6

description	ioc	process
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6

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:

freefreefreefreeuptimeuptimeuptimeuptimefreeuptimefreeuptimeuptimeuptimeuptimeuptimefreefreeuptimeuptimefreefreeuptimefreeuptimefreefreefreeuptimefree

description	ioc	process
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	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	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	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

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

Processes:

7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6uptimefreeuptimefreefreefreeuptimefreeuptimefreejournalctluptimeuptimefree

description	ioc	process
File opened for reading	/proc/1184/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/414/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/733/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/self/auxv	uptime
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/1169/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/1203/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/427/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/452/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/90/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/592/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/1204/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/17/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/3/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/1343/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/94/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/983/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/222/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/24/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/1163/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/1271/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/74/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/840/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/1058/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/1565/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/616/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/1588/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/608/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/514/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/587/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/1148/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/1371/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/1565/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/956/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/1200/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/558/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/92/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/159/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/223/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/filesystems	journalctl
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/200/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/1/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/220/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/226/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/1166/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/1374/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/92/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/99/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/1566/cmdline	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/1074/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
File opened for reading	/proc/11/stat	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6

Writes file to tmp directory 1 IoCs

Malware often drops required files in the /tmp directory.

Processes:

7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6

description	ioc	process
File opened for modification	/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/nc	7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6

/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6
1⤵
- Adds new SSH keys
- Deletes log files
- Reads runtime system information
- Writes file to tmp directory
PID:1569

/usr/bin/uname
uname -a
2⤵
PID:1579

/usr/bin/cat
cat /proc/cpuinfo
2⤵
- Checks CPU configuration
PID:1580

/usr/bin/cat
cat /etc/issue
2⤵
PID:1581

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1582

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1583

/usr/bin/journalctl
journalctl -S "@0" -u sshd
2⤵
- Reads runtime system information
PID:1588

/usr/bin/cat
cat "/var/log/auth*"
2⤵
PID:1589

/usr/bin/zcat
zcat "/var/log/auth*"
2⤵
PID:1590

/usr/local/sbin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1590

/usr/local/bin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1590

/usr/sbin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1590

/usr/bin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1590

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1591

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1592

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

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

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1597

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1598

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1599

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1600

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1601

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

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1603

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1604

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

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

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1607

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

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1609

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1610

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

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

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1613

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1614

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1618

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

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1620

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1621

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

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1623

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
d4e533f9c11b5cc9e755d94c1315553a

SHA1
9e15020cd2688b537bae18e5f291ee8cbe9a85e7

SHA256
7745b070943e910e8807e3521ac7b7a01401d131bf6c18a63433f8177ed539a6

SHA512
149226355b2e5c3fac403289b5e66bd4164a7aee76d8dc8f1d698c509db7a081bad9d4172cc950bb0e6e6909e0073d551dcde82cbeaaf61a9c1b02c9ba48fb38

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