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/0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
Size

8.7MB
MD5

0263de27fd997a4904ee4a92f91ac733
SHA1

da090fd76b2d92320cf7e55666bb5bd8f50796c9
SHA256

0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
SHA512

09ef02532eb7c3a968c1d04bf1f3aa9a4bf400f8485d3be596d7db3aed5f705fc1f85a1f6218397a70830ad747aa03c61b9c5b1cca24c2620cdbb3e5361db194
SSDEEP

98304:bKwGam/zeDrZCDcryHlc5Qp+FLk0h6u9SrS2D8t7Xk:bKwGam/z4C3FKQ8FLTh6u9S4

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:

0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732

description ioc process

File opened for modification /root/.ssh/authorized_keys 0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
Deletes itself 1 IoCs

Processes:

pid

1578

description	ioc	process
File opened for modification	/root/.ssh/authorized_keys	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732

pid
1578

Deletes log files 1 TTPs 1 IoCs

Deletes log files on the system.

defense_evasion

Clear Linux or Mac System Logs

T1070.002

Processes:

0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732

description	ioc	process
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732

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:

uptimefreeuptimefreeuptimeuptimeuptimeuptimeuptimeuptimeuptimeuptimefreefreefreefreefreeuptimeuptimeuptimeuptimefreeuptimefreefreefreefreefreefreefree

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	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	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	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	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	free
File opened for reading	/sys/devices/system/cpu/online	free

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

Processes:

uptime0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732uptimeuptimefreefreefreeuptime

description	ioc	process
File opened for reading	/proc/self/auxv	uptime
File opened for reading	/proc/1221/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/2/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/119/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/212/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/self/auxv	uptime
File opened for reading	/proc/1590/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/225/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/73/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/76/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/1057/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/1245/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/1280/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/227/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/1175/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/1180/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/1573/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/26/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/1436/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/1205/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/18/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/682/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/80/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/90/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/1100/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/25/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/640/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/1113/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/1360/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/221/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/77/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/836/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/1159/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/self/auxv	uptime
File opened for reading	/proc/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/10/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/81/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/3/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/662/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/1573/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/215/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/263/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/417/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/1067/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/761/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/1179/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/1489/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/821/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/826/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/94/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/4/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/408/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/219/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/82/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/1133/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/4/cmdline	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/90/stat	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
File opened for reading	/proc/uptime	uptime

Writes file to tmp directory 1 IoCs

Malware often drops required files in the /tmp directory.

Processes:

0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732

description	ioc	process
File opened for modification	/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/nc	0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732

/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
1⤵
- Adds new SSH keys
- Deletes log files
- Reads runtime system information
- Writes file to tmp directory
PID:1574

/usr/bin/uname
uname -a
2⤵
PID:1585

/usr/bin/cat
cat /proc/cpuinfo
2⤵
- Checks CPU configuration
PID:1586

/usr/bin/cat
cat /etc/issue
2⤵
PID:1587

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1588

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1589

/usr/bin/journalctl
journalctl -S "@0" -u sshd
2⤵
PID:1594

/usr/bin/cat
cat "/var/log/auth*"
2⤵
PID:1595

/usr/bin/zcat
zcat "/var/log/auth*"
2⤵
PID:1596

/usr/local/sbin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1596

/usr/local/bin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1596

/usr/sbin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1596

/usr/bin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1596

/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
PID:1599

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

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

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

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

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

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

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

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1615

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1616

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

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1624

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1625

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1626

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1627

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1628

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1629

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
0263de27fd997a4904ee4a92f91ac733

SHA1
da090fd76b2d92320cf7e55666bb5bd8f50796c9

SHA256
0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732

SHA512
09ef02532eb7c3a968c1d04bf1f3aa9a4bf400f8485d3be596d7db3aed5f705fc1f85a1f6218397a70830ad747aa03c61b9c5b1cca24c2620cdbb3e5361db194

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