2d9bb4e3fddfe5dc51c54cba74a1eb594c7be9d34774524d972350edd85e6499

Resubmissions

08-02-2024 01:32

240208-bx7pqsbg96 10

27-01-2024 14:19

240127-rmwgqadhc4 10

Analysis

max time kernel
153s
max time network
150s
platform
ubuntu-18.04_amd64
resource
ubuntu1804-amd64-20231221-en
resource tags

arch:amd64arch:i386image:ubuntu1804-amd64-20231221-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/0ab8836efcaa62c7daac314e0b7ab16793
Size

8.7MB
MD5

0263de27fd997a4904ee4a92f91ac733
SHA1

da090fd76b2d92320cf7e55666bb5bd8f50796c9
SHA256

0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
SHA512

09ef02532eb7c3a968c1d04bf1f3aa9a4bf400f8485d3be596d7db3aed5f705fc1f85a1f6218397a70830ad747aa03c61b9c5b1cca24c2620cdbb3e5361db194
SSDEEP

98304:bKwGam/zeDrZCDcryHlc5Qp+FLk0h6u9SrS2D8t7Xk:bKwGam/z4C3FKQ8FLTh6u9S4

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:

0ab8836efcaa62c7daac314e0b7ab16793

description	ioc	process
File opened for modification	/root/.ssh/authorized_keys	0ab8836efcaa62c7daac314e0b7ab16793
File opened for modification	/root/.ssh/authorized_keys

Deletes itself 1 IoCs

Processes:

0ab8836efcaa62c7daac314e0b7ab16793

pid process

1545 0ab8836efcaa62c7daac314e0b7ab16793
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	process
1545	0ab8836efcaa62c7daac314e0b7ab16793

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:

0ab8836efcaa62c7daac314e0b7ab16793

description	ioc	process
File deleted	/var/log/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/0ab8836efcaa62c7daac314e0b7ab16793	0ab8836efcaa62c7daac314e0b7ab16793
File deleted	/var/log/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/0ab8836efcaa62c7daac314e0b7ab16793

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

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

Processes:

uptimefreeuptimefreeuptimeuptimefreefreefreeuptimeuptimeuptimeuptimeuptimefreefreefreefreefreefreeuptimeuptimefreefreeuptimefreeuptimeuptimefreeuptime

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	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	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	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	uptime

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

Processes:

0ab8836efcaa62c7daac314e0b7ab16793freefreejournalctluptimeuptimefree

description	ioc	process
File opened for reading	/proc/545/cmdline	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/900/cmdline	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/1028/cmdline
File opened for reading	/proc/934/cmdline
File opened for reading	/proc/15/stat
File opened for reading	/proc/82/stat
File opened for reading	/proc/1144/cmdline	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/167/cmdline	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/934/stat	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/1242/cmdline	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/1192/cmdline
File opened for reading	/proc/1242/cmdline
File opened for reading	/proc/204/cmdline
File opened for reading	/proc/1164/stat
File opened for reading	/proc/31/stat
File opened for reading	/proc/706/stat
File opened for reading	/proc/1260/cmdline	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/1275/cmdline	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/172/cmdline	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/1131/cmdline
File opened for reading	/proc/1188/cmdline	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/647/cmdline	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/1152/stat	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/446/stat	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/167/cmdline
File opened for reading	/proc/22/cmdline
File opened for reading	/proc/538/cmdline
File opened for reading	/proc/98/cmdline
File opened for reading	/proc/1175/stat
File opened for reading	/proc/440/stat
File opened for reading	/proc/176/cmdline	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/29/cmdline
File opened for reading	/proc/1028/stat	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/1194/stat	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/4/stat	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/1/cmdline	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/sys/kernel/osrelease	journalctl
File opened for reading	/proc/32/cmdline
File opened for reading	/proc/455/stat
File opened for reading	/proc/1075/stat	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/485/stat	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/162/cmdline	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/706/cmdline
File opened for reading	/proc/81/cmdline
File opened for reading	/proc/1312/cmdline	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/248/cmdline	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/1135/cmdline
File opened for reading	/proc/36/cmdline
File opened for reading	/proc/1113/stat
File opened for reading	/proc/1294/stat	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/1192/cmdline	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/1169/cmdline
File opened for reading	/proc/1149/stat
File opened for reading	/proc/83/stat
File opened for reading	/proc/1123/stat	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/1135/stat	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/734/stat	0ab8836efcaa62c7daac314e0b7ab16793
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/12/cmdline
File opened for reading	/proc/18/cmdline

/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/0ab8836efcaa62c7daac314e0b7ab16793
/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/0ab8836efcaa62c7daac314e0b7ab16793
1⤵
- Adds new SSH keys
- Deletes itself
- Deletes log files
- Reads runtime system information
PID:1545

/bin/uname
uname -a
2⤵
PID:1554

/bin/cat
cat /proc/cpuinfo
2⤵
- Checks CPU configuration
PID:1559

/bin/cat
cat /etc/issue
2⤵
PID:1560

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1561

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1562

/bin/journalctl
journalctl -S "@0" -u sshd
2⤵
- Reads runtime system information
PID:1563

/bin/cat
cat "/var/log/auth*"
2⤵
PID:1564

/bin/zcat
zcat "/var/log/auth*"
2⤵
PID:1565

/bin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1565

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1566

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1567

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1568

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1569

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1574

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1575

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1578

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1579

/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/free
free -m
2⤵
- Reads CPU attributes
PID:1586

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1587

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1590

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

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1572

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1573

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1576

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1577

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1580

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1581

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1584

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1585

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1588

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1589

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1592

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1593

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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