2d9bb4e3fddfe5dc51c54cba74a1eb594c7be9d34774524d972350edd85e6499

Resubmissions

08-02-2024 01:32

240208-bx7pqsbg96 10

27-01-2024 14:19

240127-rmwgqadhc4 10

Analysis

max time kernel
158s
max time network
154s
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/9384b9e39334479194aacb53cb25ace289
Size

8.6MB
MD5

4842d5cc29c97aa611fba5ca07b060a5
SHA1

f93772038406f28fa4ca1cfb23349193562414b2
SHA256

9384b9e39334479194aacb53cb25ace289b6afe2e41bdc8619b2d2cae966b948
SHA512

cf1cb3f0291f3e0c3b47ff3ee9074b624e2d9781f9637d14ede0628ebb4b8b0fe13e16583f6a933a3e20872ec084dc812237f021757efe2a6d527a0a1723b5c8
SSDEEP

98304:JcZJWD3qZL7I9lysBfU9OWQcIImfWoezuA+dTlwO0Fz7Xk:JcZJWTqZLGlHsHQl3fNezuAI5g

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:

9384b9e39334479194aacb53cb25ace289

description	ioc
File opened for modification	/root/.ssh/authorized_keys
File opened for modification	/root/.ssh/authorized_keys	9384b9e39334479194aacb53cb25ace289

Deletes itself 1 IoCs

Processes:

pid

1535
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
1535

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:

9384b9e39334479194aacb53cb25ace289

description	ioc
File deleted	/var/log/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/9384b9e39334479194aacb53cb25ace289
File deleted	/var/log/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/9384b9e39334479194aacb53cb25ace289	9384b9e39334479194aacb53cb25ace289

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

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

Processes:

uptimefreefreefreefreeuptimefreefreeuptimefreeuptimefreeuptimefreeuptimeuptimeuptimeuptimefreefreeuptimefreeuptimefreeuptimefreeuptimeuptimefreeuptime

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	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	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	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:

9384b9e39334479194aacb53cb25ace289uptimeuptimeuptimeuptime

description	ioc	process
File opened for reading	/proc/962/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/1163/cmdline	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/166/cmdline	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/1531/cmdline
File opened for reading	/proc/172/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/534/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/1291/cmdline
File opened for reading	/proc/9/stat
File opened for reading	/proc/946/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/84/cmdline
File opened for reading	/proc/1126/stat
File opened for reading	/proc/946/stat
File opened for reading	/proc/159/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/166/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/165/cmdline	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/598/cmdline
File opened for reading	/proc/1153/stat
File opened for reading	/proc/1151/stat
File opened for reading	/proc/89/stat
File opened for reading	/proc/130/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/1153/cmdline
File opened for reading	/proc/1171/cmdline
File opened for reading	/proc/153/stat
File opened for reading	/proc/153/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/1117/cmdline	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/1159/cmdline
File opened for reading	/proc/1350/cmdline
File opened for reading	/proc/1065/cmdline	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/1268/cmdline
File opened for reading	/proc/655/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/30/cmdline	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/160/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/1190/cmdline	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/1525/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/157/cmdline	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/316/cmdline	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/635/cmdline	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/911/cmdline	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/1376/stat
File opened for reading	/proc/575/stat
File opened for reading	/proc/130/stat
File opened for reading	/proc/158/stat
File opened for reading	/proc/stat
File opened for reading	/proc/1316/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/446/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/85/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/1502/cmdline
File opened for reading	/proc/712/cmdline
File opened for reading	/proc/3/cmdline	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/502/stat
File opened for reading	/proc/13/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/712/cmdline	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/1143/cmdline
File opened for reading	/proc/1106/stat
File opened for reading	/proc/1081/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/15/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/434/stat	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/17/cmdline	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/197/cmdline	9384b9e39334479194aacb53cb25ace289
File opened for reading	/proc/1376/cmdline
File opened for reading	/proc/uptime	uptime

/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/9384b9e39334479194aacb53cb25ace289
/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/9384b9e39334479194aacb53cb25ace289
1⤵
- Adds new SSH keys
- Deletes log files
- Reads runtime system information
PID:1530

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1564

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1565

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

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

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1572

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1573

/bin/uname
uname -a
1⤵
PID:1542

/bin/cat
cat /proc/cpuinfo
1⤵
- Checks CPU configuration
PID:1543

/bin/cat
cat /etc/issue
1⤵
PID:1544

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1545

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1546

/bin/journalctl
journalctl -S "@0" -u sshd
1⤵
PID:1547

/bin/cat
cat "/var/log/auth*"
1⤵
PID:1550

/bin/zcat
zcat "/var/log/auth*"
1⤵
PID:1551

/bin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1551

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1552

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1553

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1556

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1557

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1558

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1559

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1560

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1561

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1562

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1563

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1566

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1567

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1570

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1571

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1574

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1575

/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:1578

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1579

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

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

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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