b7dd3bce3ebfbc2d5e3a9f00d47f27cb6a5895c4618c878e314e573a7c216df1

Analysis

max time kernel
149s
max time network
141s
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/041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
Size

8.7MB
MD5

76fe4fdd628218f630ba50f91ceba852
SHA1

6e90f2fe619597115e5b8dd8b0d1fb0c8ad33fa4
SHA256

041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
SHA512

7956505ae0d8479a92ddf97bb09a757566ef526934ee06b4273f0fc450e4da9204808ffa4f4674f4e6e313eb718a7c65f258ef8d23b9769b8aa12d47610d8011
SSDEEP

98304:f27or8Dynb9c4EHv9/fW/NQXPvTCaedHuaJE3fSdCnKg27Xk:f27or8DyO4UnwQfvTCXdHua4No

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:

041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742

description ioc process

File opened for modification /root/.ssh/authorized_keys 041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
Deletes itself 1 IoCs

Processes:

pid

1569

description	ioc	process
File opened for modification	/root/.ssh/authorized_keys	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742

pid
1569

Deletes log files 1 TTPs 1 IoCs

Deletes log files on the system.

defense_evasion

Clear Linux or Mac System Logs

T1070.002

Processes:

041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742

description	ioc	process
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742

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:

freeuptimeuptimeuptimeuptimefreefreeuptimefreeuptimeuptimefreefreeuptimefreefreeuptimeuptimefreeuptimefreeuptimefreefreeuptimefreeuptimefreeuptimefree

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	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	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	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	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

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

discovery

Processes:

041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742freeuptimefreeuptimeuptimefreeuptimefreeuptimefreefreefreefree

description	ioc	process
File opened for reading	/proc/1162/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1197/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/843/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1452/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/82/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1507/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/81/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/1386/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1563/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/215/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/776/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/837/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/586/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/88/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/640/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/207/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/114/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/114/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/1565/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1160/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/3/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/756/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/991/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1088/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/14/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/213/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1261/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/636/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/90/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/1276/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/409/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1377/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1114/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/866/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/13/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/746/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/635/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/522/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/83/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/76/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1142/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1344/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/314/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/102/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/113/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1164/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/588/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742

Writes file to tmp directory 1 IoCs

Malware often drops required files in the /tmp directory.

Processes:

041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742

description	ioc	process
File opened for modification	/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/nc	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742

/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
1⤵
- Adds new SSH keys
- Deletes log files
- Reads runtime system information
- Writes file to tmp directory
PID:1566

/usr/bin/uname
uname -a
2⤵
PID:1580

/usr/bin/cat
cat /proc/cpuinfo
2⤵
- Checks CPU configuration
PID:1581

/usr/bin/cat
cat /etc/issue
2⤵
PID:1582

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1583

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

/usr/bin/journalctl
journalctl -S "@0" -u sshd
2⤵
PID:1585

/usr/bin/cat
cat "/var/log/auth*"
2⤵
PID:1586

/usr/bin/zcat
zcat "/var/log/auth*"
2⤵
PID:1587

/usr/local/sbin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1587

/usr/local/bin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1587

/usr/sbin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1587

/usr/bin/gzip
gzip -cd "/var/log/auth*"
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/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:1594

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

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1596

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

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1598

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1599

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

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

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

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

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

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1616

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

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

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

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

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1624

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

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

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
76fe4fdd628218f630ba50f91ceba852

SHA1
6e90f2fe619597115e5b8dd8b0d1fb0c8ad33fa4

SHA256
041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742

SHA512
7956505ae0d8479a92ddf97bb09a757566ef526934ee06b4273f0fc450e4da9204808ffa4f4674f4e6e313eb718a7c65f258ef8d23b9769b8aa12d47610d8011

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