b7dd3bce3ebfbc2d5e3a9f00d47f27cb6a5895c4618c878e314e573a7c216df1

Analysis

max time kernel
153s
max time network
143s
platform
ubuntu-20.04_amd64
resource
ubuntu2004-amd64-20240221-en
resource tags

arch:amd64arch:i386image:ubuntu2004-amd64-20240221-enkernel:5.4.0-169-genericlocale:en-usos:ubuntu-20.04-amd64system
submitted
01-03-2024 21:28

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General

Target

The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
Size

8.7MB
MD5

76fe4fdd628218f630ba50f91ceba852
SHA1

6e90f2fe619597115e5b8dd8b0d1fb0c8ad33fa4
SHA256

041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
SHA512

7956505ae0d8479a92ddf97bb09a757566ef526934ee06b4273f0fc450e4da9204808ffa4f4674f4e6e313eb718a7c65f258ef8d23b9769b8aa12d47610d8011
SSDEEP

98304:f27or8Dynb9c4EHv9/fW/NQXPvTCaedHuaJE3fSdCnKg27Xk:f27or8DyO4UnwQfvTCXdHua4No

Score

8^/10

antivm infostealer 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:

041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742

description	ioc	process
File opened for modification	/root/.ssh/authorized_keys	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for modification	/root/.ssh/authorized_keys

Deletes itself 1 IoCs

Processes:

041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742

pid process

1890 041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
Reads EFI boot settings 1 IoCs
Reads EFI boot settings from the efivars filesystem, may contain security secrets or sensitive data.
infostealer

Processes:

journalctl

description ioc process

File opened for reading /sys/firmware/efi/efivars/SystemdOptions-8cf2644b-4b0b-428f-9387-6d876050dc67 journalctl
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
1890	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742

description	ioc	process
File opened for reading	/sys/firmware/efi/efivars/SystemdOptions-8cf2644b-4b0b-428f-9387-6d876050dc67	journalctl

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:

041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742

description	ioc	process
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742

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

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

Processes:

uptimeuptimeuptimeuptimefreefreeuptimefreeuptimefreefreefreefreefreeuptimefreefreeuptimefreeuptimeuptimeuptimeuptimefreefreefreefreeuptimeuptimeuptime

description	ioc	process
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	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	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	uptime
File opened for reading	/sys/devices/system/cpu/online	uptime
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:

journalctl

description ioc process

File opened for reading /sys/firmware/efi/efivars/SystemdOptions-8cf2644b-4b0b-428f-9387-6d876050dc67 journalctl

description	ioc	process
File opened for reading	/sys/firmware/efi/efivars/SystemdOptions-8cf2644b-4b0b-428f-9387-6d876050dc67	journalctl

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

Processes:

041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742uptimefreefreeuptimeuptimefreefree

description	ioc
File opened for reading	/proc/674/cmdline
File opened for reading	/proc/88/cmdline
File opened for reading	/proc/140/stat
File opened for reading	/proc/21/stat
File opened for reading	/proc/70/stat
File opened for reading	/proc/171/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1082/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1078/cmdline
File opened for reading	/proc/640/cmdline
File opened for reading	/proc/1427/stat
File opened for reading	/proc/15/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/168/stat
File opened for reading	/proc/19/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1028/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/614/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/173/cmdline
File opened for reading	/proc/992/stat
File opened for reading	/proc/79/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1460/stat
File opened for reading	/proc/164/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1379/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/1778/cmdline
File opened for reading	/proc/1041/stat
File opened for reading	/proc/1379/stat
File opened for reading	/proc/445/stat
File opened for reading	/proc/173/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1911/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/171/cmdline
File opened for reading	/proc/2/stat
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/1786/cmdline
File opened for reading	/proc/90/cmdline
File opened for reading	/proc/457/stat
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/1409/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/70/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/1403/cmdline
File opened for reading	/proc/999/cmdline
File opened for reading	/proc/1398/stat
File opened for reading	/proc/270/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/992/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1083/cmdline
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/909/stat
File opened for reading	/proc/21/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/168/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1066/stat
File opened for reading	/proc/1075/stat
File opened for reading	/proc/458/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1079/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/77/cmdline
File opened for reading	/proc/163/stat
File opened for reading	/proc/4/stat
File opened for reading	/proc/71/stat
File opened for reading	/proc/676/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/91/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/1066/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/538/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/81/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/166/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742

/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
1⤵
- Adds new SSH keys
- Deletes itself
- Deletes log files
- Reads runtime system information
PID:1890

/usr/bin/uname
uname -a
2⤵
PID:1903

/usr/bin/cat
cat /proc/cpuinfo
2⤵
- Checks CPU configuration
PID:1907

/usr/bin/cat
cat /etc/issue
2⤵
PID:1908

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1909

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1910

/usr/bin/journalctl
journalctl -S "@0" -u sshd
2⤵
- Reads EFI boot settings
- Enumerates kernel/hardware configuration
PID:1911

/usr/bin/cat
cat "/var/log/auth*"
2⤵
PID:1912

/usr/bin/zcat
zcat "/var/log/auth*"
2⤵
PID:1913

/usr/local/sbin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1913

/usr/local/bin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1913

/usr/sbin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1913

/usr/bin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1913

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:2043

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:2044

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:2064

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:2065

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:2068

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:2069

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:2080

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:2081

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:2084

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:2085

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:2089

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:2090

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:2091

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:2092

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2045

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2046

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2066

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2067

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2076

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2077

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2078

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2079

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2082

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2083

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2086

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2087

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2093

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2094

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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