2d9bb4e3fddfe5dc51c54cba74a1eb594c7be9d34774524d972350edd85e6499

Resubmissions

08-02-2024 01:32

240208-bx7pqsbg96 10

27-01-2024 14:19

240127-rmwgqadhc4 10

Analysis

max time kernel
154s
max time network
163s
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/001eb377f0452060012124cb214f658754
Size

8.7MB
MD5

799c965e0a5a132ec2263d5fea0b0e1c
SHA1

a15c5a706122fabdef1989c893c72c6530fedcb4
SHA256

001eb377f0452060012124cb214f658754c7488ccb82e23ec56b2f45a636c859
SHA512

6c481a855ee6f81dd388c8a4623e519bfbb9f496dada93672360f0a7476fb2b32fd261324156fd4729cef3cbe13f0a8b5862fe47b6db1860d0d67a77283b5ad8
SSDEEP

98304:VqGMOLT5E2Dy8Ji6LrDl3bTMsEplZ1GW5w+Aw:wGMOLTmaHjLXl3bTMsEpf1x5

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:

001eb377f0452060012124cb214f658754

description	ioc	process
File opened for modification	/root/.ssh/authorized_keys	001eb377f0452060012124cb214f658754
File opened for modification	/root/.ssh/authorized_keys

Deletes itself 1 IoCs

Processes:

001eb377f0452060012124cb214f658754

pid process

1541 001eb377f0452060012124cb214f658754
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
1541	001eb377f0452060012124cb214f658754

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:

001eb377f0452060012124cb214f658754

description	ioc	process
File deleted	/var/log/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/001eb377f0452060012124cb214f658754	001eb377f0452060012124cb214f658754
File deleted	/var/log/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/001eb377f0452060012124cb214f658754

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

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

Processes:

freefreefreefreeuptimeuptimefreeuptimefreefreeuptimefreeuptimefreeuptimeuptimeuptimeuptimeuptimeuptimeuptimefreefreefreeuptimefreefreeuptimefreeuptime

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	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	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	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	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

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

System Information Discovery
T1082

Processes:

001eb377f0452060012124cb214f658754

description ioc process

File opened for reading /sys/kernel/mm/transparent_hugepage/hpage_pmd_size 001eb377f0452060012124cb214f658754

description	ioc	process
File opened for reading	/sys/kernel/mm/transparent_hugepage/hpage_pmd_size	001eb377f0452060012124cb214f658754

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

Processes:

uptimeuptimeuptimeuptime001eb377f0452060012124cb214f658754uptimefreefreeuptimeuptimefree

description	ioc
File opened for reading	/proc/7/cmdline
File opened for reading	/proc/956/cmdline
File opened for reading	/proc/1172/stat
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/15/cmdline
File opened for reading	/proc/31/stat
File opened for reading	/proc/164/stat
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/972/cmdline
File opened for reading	/proc/178/cmdline
File opened for reading	/proc/98/cmdline
File opened for reading	/proc/11/stat
File opened for reading	/proc/1096/cmdline
File opened for reading	/proc/646/cmdline
File opened for reading	/proc/1104/stat
File opened for reading	/proc/479/stat
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/19/cmdline	001eb377f0452060012124cb214f658754
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/stat	001eb377f0452060012124cb214f658754
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/1141/cmdline
File opened for reading	/proc/1260/stat
File opened for reading	/proc/1159/cmdline
File opened for reading	/proc/341/cmdline
File opened for reading	/proc/78/cmdline
File opened for reading	/proc/15/stat
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/28/cmdline	001eb377f0452060012124cb214f658754
File opened for reading	/proc/1121/stat
File opened for reading	/proc/1335/stat
File opened for reading	/proc/174/stat
File opened for reading	/proc/180/cmdline
File opened for reading	/proc/431/cmdline
File opened for reading	/proc/27/stat
File opened for reading	/proc/641/cmdline
File opened for reading	/proc/23/cmdline
File opened for reading	/proc/1296/cmdline
File opened for reading	/proc/547/cmdline
File opened for reading	/proc/1/stat
File opened for reading	/proc/245/cmdline	001eb377f0452060012124cb214f658754
File opened for reading	/proc/1191/stat
File opened for reading	/proc/18/cmdline
File opened for reading	/proc/1189/cmdline
File opened for reading	/proc/179/cmdline
File opened for reading	/proc/18/cmdline	001eb377f0452060012124cb214f658754
File opened for reading	/proc/275/cmdline
File opened for reading	/proc/176/cmdline
File opened for reading	/proc/1195/stat
File opened for reading	/proc/169/stat
File opened for reading	/proc/486/cmdline
File opened for reading	/proc/1535/cmdline
File opened for reading	/proc/1187/stat
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/1087/cmdline
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/6/stat
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/129/cmdline
File opened for reading	/proc/129/stat
File opened for reading	/proc/473/stat
File opened for reading	/proc/558/stat

/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/001eb377f0452060012124cb214f658754
/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/001eb377f0452060012124cb214f658754
1⤵
- Adds new SSH keys
- Deletes itself
- Deletes log files
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:1541

/bin/uname
uname -a
2⤵
PID:1550

/bin/cat
cat /proc/cpuinfo
2⤵
- Checks CPU configuration
PID:1554

/bin/cat
cat /etc/issue
2⤵
PID:1555

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1556

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1557

/bin/journalctl
journalctl -S "@0" -u sshd
1⤵
PID:1558

/bin/cat
cat "/var/log/auth*"
1⤵
PID:1560

/bin/zcat
zcat "/var/log/auth*"
1⤵
PID:1561

/bin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1561

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

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

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1564

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1565

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1568

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1569

/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:1572

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

/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
- Reads runtime system information
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

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1582

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1583

/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
- Reads runtime system information
PID:1586

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1587

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

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

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1590

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1591

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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