2d9bb4e3fddfe5dc51c54cba74a1eb594c7be9d34774524d972350edd85e6499

Resubmissions

08-02-2024 01:32

240208-bx7pqsbg96 10

27-01-2024 14:19

240127-rmwgqadhc4 10

Analysis

max time kernel
157s
max time network
157s
platform
ubuntu-18.04_amd64
resource
ubuntu1804-amd64-20231215-en
resource tags

arch:amd64arch:i386image:ubuntu1804-amd64-20231215-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
submitted
27-01-2024 14:19

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General

Target

The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/5fb29fb0136978b9ccf60750af09cec74a
Size

8.7MB
MD5

97cfb3c26a12e13792f7d1741309d767
SHA1

a010f85cdda9f83cbc738eb1b41cd621f3d6018e
SHA256

5fb29fb0136978b9ccf60750af09cec74a257a0ca9c47159ca74dbba21fbcc59
SHA512

162028b9e93bb4718427304a96767880da7094c99ae6145e61a562f09dae0ce6726b2dfac95782990f50fa9bfc9f82b1aacb9e7b12442094137872fa8a3f3379
SSDEEP

98304:yM1SkPCVk8rOmgYcGrr69gRQTI6xmiiLuSESStOAco7Xk:yM1SkPCVkIgcWAQ06xniLuSExR

Score

8^/10

antivm persistence

Malware Config

Signatures

Adds new SSH keys 2 IoCs

Linux special file to hold SSH keys. The threat actor may add new keys for further remote access.

persistence

Processes:

5fb29fb0136978b9ccf60750af09cec74a

description	ioc
File opened for modification	/root/.ssh/authorized_keys
File opened for modification	/root/.ssh/authorized_keys	5fb29fb0136978b9ccf60750af09cec74a

Deletes itself 1 IoCs

Processes:

pid

1606
Checks CPU configuration 1 TTPs 1 IoCs
Checks CPU information which indicate if the system is a virtual machine.
antivm

Virtualization/Sandbox Evasion
T1497

Processes:

cat

description ioc process

File opened for reading /proc/cpuinfo cat

pid
1606

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

Deletes log files 1 TTPs 2 IoCs

Deletes log files on the system.

Indicator Removal

T1070

Processes:

5fb29fb0136978b9ccf60750af09cec74a

description	ioc
File deleted	/var/log/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/5fb29fb0136978b9ccf60750af09cec74a
File deleted	/var/log/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/5fb29fb0136978b9ccf60750af09cec74a	5fb29fb0136978b9ccf60750af09cec74a

Enumerates running processes
Discovers information about currently running processes on the system

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

Processes:

uptimefreeuptimeuptimefreefreeuptimeuptimeuptimefreeuptimeuptimeuptimefreefreeuptimefreefreefreeuptimefreefreeuptimefreeuptimefreeuptimeuptimefreefree

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	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	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	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	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	uptime
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.

Processes:

uptimeuptimefreejournalctluptimeuptimefreefreeuptimeuptime

description	ioc
File opened for reading	/proc/5/cmdline
File opened for reading	/proc/1110/stat
File opened for reading	/proc/15/cmdline
File opened for reading	/proc/442/cmdline
File opened for reading	/proc/467/stat
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/208/cmdline
File opened for reading	/proc/1/sched	journalctl
File opened for reading	/proc/17/cmdline
File opened for reading	/proc/166/stat
File opened for reading	/proc/449/stat
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/1217/cmdline
File opened for reading	/proc/25/cmdline
File opened for reading	/proc/891/cmdline
File opened for reading	/proc/84/stat
File opened for reading	/proc/993/stat
File opened for reading	/proc/1298/cmdline
File opened for reading	/proc/171/cmdline
File opened for reading	/proc/554/cmdline
File opened for reading	/proc/1597/stat
File opened for reading	/proc/32/stat
File opened for reading	/proc/166/cmdline
File opened for reading	/proc/430/cmdline
File opened for reading	/proc/434/cmdline
File opened for reading	/proc/24/stat
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/2/stat
File opened for reading	/proc/31/stat
File opened for reading	/proc/531/cmdline
File opened for reading	/proc/18/stat
File opened for reading	/proc/1128/cmdline
File opened for reading	/proc/1195/cmdline
File opened for reading	/proc/1388/stat
File opened for reading	/proc/26/stat
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/178/stat
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/622/cmdline
File opened for reading	/proc/78/cmdline
File opened for reading	/proc/83/cmdline
File opened for reading	/proc/1200/stat
File opened for reading	/proc/208/stat
File opened for reading	/proc/1184/stat
File opened for reading	/proc/167/stat
File opened for reading	/proc/78/stat
File opened for reading	/proc/13/cmdline
File opened for reading	/proc/448/cmdline
File opened for reading	/proc/1358/stat
File opened for reading	/proc/self/stat	journalctl
File opened for reading	/proc/182/cmdline
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/698/cmdline
File opened for reading	/proc/19/cmdline
File opened for reading	/proc/1098/stat
File opened for reading	/proc/85/cmdline
File opened for reading	/proc/1191/stat
File opened for reading	/proc/982/stat
File opened for reading	/proc/985/stat
File opened for reading	/proc/163/cmdline

/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/5fb29fb0136978b9ccf60750af09cec74a
/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/5fb29fb0136978b9ccf60750af09cec74a
1⤵
- Adds new SSH keys
- Deletes log files
PID:1603

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

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

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1632

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1633

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

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

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1640

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1641

/bin/uname
uname -a
1⤵
PID:1614

/bin/cat
cat /proc/cpuinfo
1⤵
- Checks CPU configuration
PID:1616

/bin/cat
cat /etc/issue
1⤵
PID:1617

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1618

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1619

/bin/journalctl
journalctl -S "@0" -u sshd
1⤵
- Reads runtime system information
PID:1620

/bin/cat
cat "/var/log/auth*"
1⤵
PID:1622

/bin/zcat
zcat "/var/log/auth*"
1⤵
PID:1623

/bin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1623

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1624

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1625

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1630

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1631

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1634

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1635

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1638

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1639

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1642

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1643

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1644

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1645

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1646

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1647

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1648

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1649

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1650

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1651

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1652

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1653

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Indicator Removal

T1070

Credential Access

Discovery

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

/root/.ssh/authorized_keys
Filesize
381B

MD5
9da18d38b6dd4c4aa84642378d63fa89

SHA1
c5a976691e4b5963b5e760044f22cc9685268db6

SHA256
43062900b2539d8d1f67f30fa7042c56b53541f63875b5f0de5d8fbde0e0a8bf

SHA512
222b20b5b2ff8956c13dbac1f8d3f81435613b751913d65f4c4082ea9c1a7c8ae91be17a24ef4ae0c708bfe09daab552bb209615714d70acfaaed89c536c71b3

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