2d9bb4e3fddfe5dc51c54cba74a1eb594c7be9d34774524d972350edd85e6499

Resubmissions

08-02-2024 01:32

240208-bx7pqsbg96 10

27-01-2024 14:19

240127-rmwgqadhc4 10

Analysis

max time kernel
152s
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/3205603282a636979a55aa1e1be518cd3a
Size

8.7MB
MD5

8f0cb7af15afe40ed85f35e1b40b8f38
SHA1

525f97d6e7e3cbb611a1cf37e955c0656f4b3c06
SHA256

3205603282a636979a55aa1e1be518cd3adcbbe491745d996ceb4b5a4dece0c5
SHA512

bd9e97b4042d89e081eced5781149b0d8e28a6e9d35c2a449a21aee26765ed8eea560434ba5e9a897c4e4c89d7a2b8997e31ad4ac2202a940b8731a5f447170d
SSDEEP

98304:xFjhn+LznCFajBKs/Q1N4KGWISZOLor5lkFIGGw+Aw:Hjhn+HCS4s41N4KGWISZd5lrGG

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:

3205603282a636979a55aa1e1be518cd3a

description	ioc
File opened for modification	/root/.ssh/authorized_keys
File opened for modification	/root/.ssh/authorized_keys	3205603282a636979a55aa1e1be518cd3a

Deletes itself 1 IoCs

Processes:

pid

1586
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
1586

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:

3205603282a636979a55aa1e1be518cd3a

description	ioc	process
File deleted	/var/log/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/3205603282a636979a55aa1e1be518cd3a	3205603282a636979a55aa1e1be518cd3a
File deleted	/var/log/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/3205603282a636979a55aa1e1be518cd3a

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

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

Processes:

freefreeuptimeuptimefreeuptimeuptimeuptimefreeuptimeuptimefreeuptimefreefreefreefreeuptimeuptimefreeuptimefreeuptimeuptimefreefreefreeuptimeuptimefree

description	ioc	process
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	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	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	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	free

Enumerates kernel/hardware configuration 1 TTPs 1 IoCs
Reads contents of /sys virtual filesystem to enumerate system information.

System Information Discovery
T1082

Processes:

3205603282a636979a55aa1e1be518cd3a

description ioc process

File opened for reading /sys/kernel/mm/transparent_hugepage/hpage_pmd_size 3205603282a636979a55aa1e1be518cd3a

description	ioc	process
File opened for reading	/sys/kernel/mm/transparent_hugepage/hpage_pmd_size	3205603282a636979a55aa1e1be518cd3a

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

Processes:

3205603282a636979a55aa1e1be518cd3ajournalctluptimeuptimeuptimeuptimeuptime

description	ioc
File opened for reading	/proc/1600/stat
File opened for reading	/proc/711/stat
File opened for reading	/proc/179/cmdline
File opened for reading	/proc/183/cmdline
File opened for reading	/proc/7/stat	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/10/cmdline	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/173/cmdline	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/1553/cmdline
File opened for reading	/proc/437/cmdline
File opened for reading	/proc/482/stat	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/1001/cmdline	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/214/cmdline
File opened for reading	/proc/filesystems	journalctl
File opened for reading	/proc/1148/stat
File opened for reading	/proc/1174/stat
File opened for reading	/proc/332/stat
File opened for reading	/proc/22/cmdline	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/82/cmdline	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/11/cmdline
File opened for reading	/proc/1600/cmdline
File opened for reading	/proc/7/cmdline
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/482/cmdline	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/542/cmdline
File opened for reading	/proc/551/cmdline
File opened for reading	/proc/31/stat
File opened for reading	/proc/24/stat	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/3/cmdline	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/542/cmdline	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/1087/cmdline
File opened for reading	/proc/1253/stat
File opened for reading	/proc/1087/stat
File opened for reading	/proc/13/stat
File opened for reading	/proc/27/stat	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/3/stat	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/stat	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/1583/cmdline	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/16/cmdline
File opened for reading	/proc/1308/stat	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/1/cmdline
File opened for reading	/proc/1294/stat
File opened for reading	/proc/1139/cmdline
File opened for reading	/proc/183/stat	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/186/stat	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/1020/stat	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/485/stat
File opened for reading	/proc/1110/cmdline	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/1196/cmdline	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/1319/cmdline	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/170/cmdline	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/21/cmdline
File opened for reading	/proc/671/cmdline
File opened for reading	/proc/711/cmdline
File opened for reading	/proc/98/cmdline
File opened for reading	/proc/20/stat
File opened for reading	/proc/89/stat
File opened for reading	/proc/1001/stat	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/1239/stat	3205603282a636979a55aa1e1be518cd3a
File opened for reading	/proc/187/cmdline
File opened for reading	/proc/30/cmdline

/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/3205603282a636979a55aa1e1be518cd3a
/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/3205603282a636979a55aa1e1be518cd3a
1⤵
- Adds new SSH keys
- Deletes log files
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:1583

/bin/journalctl
journalctl -S "@0" -u sshd
2⤵
- Reads runtime system information
PID:1600

/bin/cat
cat "/var/log/auth*"
2⤵
PID:1602

/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
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
- Reads runtime system information
PID:1615

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1618

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1619

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

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

/bin/uname
uname -a
1⤵
PID:1591

/bin/cat
cat /proc/cpuinfo
1⤵
- Checks CPU configuration
PID:1596

/bin/cat
cat /etc/issue
1⤵
PID:1597

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1598

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1599

/bin/zcat
zcat "/var/log/auth*"
1⤵
PID:1603

/bin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1603

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1604

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1605

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1610

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1611

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1616

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1617

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1620

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1621

/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:1626

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1627

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1628

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1629

/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:1632

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1633

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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