b7dd3bce3ebfbc2d5e3a9f00d47f27cb6a5895c4618c878e314e573a7c216df1

Analysis

max time kernel
150s
max time network
148s
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/5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
Size

8.7MB
MD5

97cfb3c26a12e13792f7d1741309d767
SHA1

a010f85cdda9f83cbc738eb1b41cd621f3d6018e
SHA256

5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
SHA512

162028b9e93bb4718427304a96767880da7094c99ae6145e61a562f09dae0ce6726b2dfac95782990f50fa9bfc9f82b1aacb9e7b12442094137872fa8a3f3379
SSDEEP

98304:yM1SkPCVk8rOmgYcGrr69gRQTI6xmiiLuSESStOAco7Xk:yM1SkPCVkIgcWAQ06xniLuSExR

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:

5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59

description ioc process

File opened for modification /root/.ssh/authorized_keys 5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
Deletes itself 1 IoCs

Processes:

5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59

pid process

1613 5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59

description	ioc	process
File opened for modification	/root/.ssh/authorized_keys	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59

pid	process
1613	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59

Deletes log files 1 TTPs 1 IoCs

Deletes log files on the system.

defense_evasion

Clear Linux or Mac System Logs

T1070.002

Processes:

5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59

description	ioc	process
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59

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:

uptimefreefreeuptimeuptimefreeuptimefreeuptimefreefreefreeuptimeuptimefreefreeuptimefreefreeuptimeuptimefreeuptimeuptimefreeuptimefreeuptimefreeuptime

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

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

Processes:

5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59uptimeuptimeuptimefreefreefreeuptimefreeuptimefree

description	ioc	process
File opened for reading	/proc/991/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/591/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/112/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/1075/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/1177/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/1469/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/1197/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/781/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/1286/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/737/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/1254/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/97/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/373/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/9/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/80/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/424/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/self/auxv	uptime
File opened for reading	/proc/22/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/748/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/118/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/94/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/95/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/1431/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/775/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/412/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/1185/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/96/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/1/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/585/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/1098/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/748/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/25/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/757/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/775/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/112/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/1158/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/583/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/1085/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/1192/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/self/auxv	uptime
File opened for reading	/proc/27/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/607/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/76/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/1254/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/1621/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/1158/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/self/auxv	uptime
File opened for reading	/proc/632/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/79/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/1162/cmdline	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/1294/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/1317/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/1040/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/118/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
File opened for reading	/proc/1409/stat	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59

Writes file to tmp directory 1 IoCs

Malware often drops required files in the /tmp directory.

Processes:

5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59

description	ioc	process
File opened for modification	/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/nc	5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59

/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
1⤵
- Adds new SSH keys
- Deletes itself
- Deletes log files
- Reads runtime system information
- Writes file to tmp directory
PID:1613

/usr/bin/uname
uname -a
2⤵
PID:1628

/usr/bin/cat
cat /proc/cpuinfo
2⤵
- Checks CPU configuration
PID:1629

/usr/bin/cat
cat /etc/issue
2⤵
PID:1630

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1631

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1632

/usr/bin/journalctl
journalctl -S "@0" -u sshd
2⤵
PID:1633

/usr/bin/cat
cat "/var/log/auth*"
2⤵
PID:1634

/usr/bin/zcat
zcat "/var/log/auth*"
2⤵
PID:1635

/usr/local/sbin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1635

/usr/local/bin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1635

/usr/sbin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1635

/usr/bin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1635

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1636

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1637

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1638

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1639

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1642

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1643

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1644

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1645

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1646

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1647

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1648

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1649

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1650

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1651

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1652

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1653

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1654

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1655

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1656

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1657

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1658

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1659

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1663

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1664

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1665

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1666

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1667

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1668

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
97cfb3c26a12e13792f7d1741309d767

SHA1
a010f85cdda9f83cbc738eb1b41cd621f3d6018e

SHA256
5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59

SHA512
162028b9e93bb4718427304a96767880da7094c99ae6145e61a562f09dae0ce6726b2dfac95782990f50fa9bfc9f82b1aacb9e7b12442094137872fa8a3f3379

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