b7dd3bce3ebfbc2d5e3a9f00d47f27cb6a5895c4618c878e314e573a7c216df1

Analysis

max time kernel
152s
max time network
148s
platform
ubuntu-18.04_amd64
resource
ubuntu1804-amd64-20240226-en
resource tags

arch:amd64arch:i386image:ubuntu1804-amd64-20240226-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
submitted
01-03-2024 21:28

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General

Target

The-MALWARE-Repo-master/Botnets/FritzFrog/90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
Size

8.7MB
MD5

100bff2f4ee4d88b005bb016daa04fe6
SHA1

36e5f8f70890601aa2adaffb203afd06516097f0
SHA256

90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
SHA512

a1cb52bc6edaa7f8bb216d2a5f3deb0b8468c64b43931ef570c05e6a9872c63f00aff50d69686fdc2ea25d3d83da4bf9d78f5e6910643163570d0bd6279c6e16
SSDEEP

98304:wRINZeR9Zy031d3eDi2dZQT3/S1GVlOre53ziKZ7Xk:wRINZeR9Zx1CFDQD/SQVlOrKr

Score

8^/10

antivm persistence

Malware Config

Signatures

Adds new SSH keys 1 IoCs
Linux special file to hold SSH keys. The threat actor may add new keys for further remote access.
persistence

Processes:

description ioc

File opened for modification /root/.ssh/authorized_keys
Deletes itself 1 IoCs

Processes:

pid

1581
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
Deletes log files 1 TTPs 1 IoCs
Deletes log files on the system.

Indicator Removal
T1070

Processes:

description ioc

File deleted /var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
Enumerates running processes
Discovers information about currently running processes on the system

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

pid
1581

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

description	ioc
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

Processes:

freefreeuptimefreeuptimeuptimefreeuptimefreeuptimeuptimefreeuptimefreeuptimefreeuptimefreeuptimefreeuptimefreeuptimeuptimefreefreeuptimefreeuptimefree

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	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	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	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	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

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

Processes:

freefreefreefreefreeuptimeuptimeuptime

description	ioc
File opened for reading	/proc/1188/stat
File opened for reading	/proc/19/stat
File opened for reading	/proc/11/cmdline
File opened for reading	/proc/1219/cmdline
File opened for reading	/proc/182/cmdline
File opened for reading	/proc/939/cmdline
File opened for reading	/proc/1183/cmdline
File opened for reading	/proc/1023/cmdline
File opened for reading	/proc/175/stat
File opened for reading	/proc/176/stat
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/1579/stat
File opened for reading	/proc/30/cmdline
File opened for reading	/proc/1087/stat
File opened for reading	/proc/1128/stat
File opened for reading	/proc/sys/net/core/somaxconn
File opened for reading	/proc/1188/cmdline
File opened for reading	/proc/18/stat
File opened for reading	/proc/458/stat
File opened for reading	/proc/85/stat
File opened for reading	/proc/stat
File opened for reading	/proc/952/cmdline
File opened for reading	/proc/961/cmdline
File opened for reading	/proc/1104/stat
File opened for reading	/proc/1128/cmdline
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/178/cmdline
File opened for reading	/proc/3/cmdline
File opened for reading	/proc/1/stat
File opened for reading	/proc/168/cmdline
File opened for reading	/proc/965/cmdline
File opened for reading	/proc/163/stat
File opened for reading	/proc/472/stat
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/1459/cmdline
File opened for reading	/proc/1576/stat
File opened for reading	/proc/417/stat
File opened for reading	/proc/6/stat
File opened for reading	/proc/1048/cmdline
File opened for reading	/proc/169/stat
File opened for reading	/proc/180/stat
File opened for reading	/proc/939/stat
File opened for reading	/proc/165/cmdline
File opened for reading	/proc/16/stat
File opened for reading	/proc/21/stat
File opened for reading	/proc/5/stat
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/13/stat
File opened for reading	/proc/1219/stat
File opened for reading	/proc/3/stat
File opened for reading	/proc/34/stat
File opened for reading	/proc/1161/stat
File opened for reading	/proc/311/stat
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/177/cmdline
File opened for reading	/proc/422/stat
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/422/cmdline
File opened for reading	/proc/18/cmdline
File opened for reading	/proc/1332/stat
File opened for reading	/proc/521/cmdline
File opened for reading	/proc/meminfo	free

/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
1⤵
PID:1579

/bin/uname
uname -a
1⤵
PID:1591

/bin/cat
cat /proc/cpuinfo
1⤵
- Checks CPU configuration
PID:1593

/bin/cat
cat /etc/issue
1⤵
PID:1594

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1595

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1596

/bin/journalctl
journalctl -S "@0" -u sshd
1⤵
PID:1597

/bin/cat
cat "/var/log/auth*"
1⤵
PID:1599

/bin/zcat
zcat "/var/log/auth*"
1⤵
PID:1600

/bin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1600

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1601

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1602

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1603

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

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1607

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1608

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1609

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

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

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1612

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1613

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1614

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1615

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

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1617

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1618

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1619

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

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1621

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1622

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1623

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

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

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1626

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

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

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

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

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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