b7dd3bce3ebfbc2d5e3a9f00d47f27cb6a5895c4618c878e314e573a7c216df1

Analysis

max time kernel
153s
max time network
146s
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
03-03-2024 03:21

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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 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:

90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5

description	ioc	process
File opened for modification	/root/.ssh/authorized_keys	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for modification	/root/.ssh/authorized_keys

Deletes itself 1 IoCs

Processes:

90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5

pid process

1916 90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
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
1916	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5

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:

90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5

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

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

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

Processes:

freefreeuptimeuptimeuptimeuptimefreeuptimefreefreefreefreeuptimeuptimeuptimeuptimefreefreefreeuptimefreeuptimefreefreefreeuptimeuptimeuptimefreeuptime

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	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	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	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	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:

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:

90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5journalctlfreeuptimefreefreeuptimefree

description	ioc	process
File opened for reading	/proc/269/cmdline	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/73/cmdline
File opened for reading	/proc/970/stat
File opened for reading	/proc/556/stat	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/1433/cmdline
File opened for reading	/proc/8/stat
File opened for reading	/proc/168/cmdline	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/201/cmdline	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/786/cmdline	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/200/cmdline
File opened for reading	/proc/cmdline	journalctl
File opened for reading	/proc/78/stat
File opened for reading	/proc/1108/cmdline	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/93/cmdline
File opened for reading	/proc/6/stat
File opened for reading	/proc/1009/stat	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/535/cmdline
File opened for reading	/proc/1128/stat
File opened for reading	/proc/500/stat	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/1040/cmdline	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/162/stat	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/305/stat	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/1421/cmdline
File opened for reading	/proc/269/stat
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/1026/cmdline
File opened for reading	/proc/242/cmdline
File opened for reading	/proc/3/cmdline	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/927/cmdline	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/305/cmdline	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/502/stat
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/1482/cmdline	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/1040/cmdline
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/169/cmdline
File opened for reading	/proc/176/cmdline
File opened for reading	/proc/stat	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/502/cmdline
File opened for reading	/proc/1107/stat
File opened for reading	/proc/13/stat	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/176/cmdline	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/118/cmdline
File opened for reading	/proc/77/cmdline
File opened for reading	/proc/1083/cmdline	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/19/cmdline	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/781/cmdline	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/1524/cmdline
File opened for reading	/proc/87/cmdline
File opened for reading	/proc/1432/stat
File opened for reading	/proc/1469/stat
File opened for reading	/proc/159/stat
File opened for reading	/proc/485/stat
File opened for reading	/proc/118/stat	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/4/stat	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/88/cmdline
File opened for reading	/proc/1036/stat
File opened for reading	/proc/1423/stat
File opened for reading	/proc/521/stat	90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
File opened for reading	/proc/1422/cmdline
File opened for reading	/proc/619/cmdline

/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/90b61cc77bb2d726219fd00ae2d0ecdf6f0fe7078529e87b7ec8e603008232d5
1⤵
- Adds new SSH keys
- Deletes itself
- Deletes log files
- Reads runtime system information
PID:1916

/usr/bin/uname
uname -a
2⤵
PID:1929

/usr/bin/cat
cat /proc/cpuinfo
2⤵
- Checks CPU configuration
PID:1933

/usr/bin/cat
cat /etc/issue
2⤵
PID:1934

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1935

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1936

/usr/bin/journalctl
journalctl -S "@0" -u sshd
2⤵
- Reads EFI boot settings
- Enumerates kernel/hardware configuration
- Reads runtime system information
PID:1937

/usr/bin/cat
cat "/var/log/auth*"
2⤵
PID:1938

/usr/bin/zcat
zcat "/var/log/auth*"
2⤵
PID:1939

/usr/local/sbin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1939

/usr/local/bin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1939

/usr/sbin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1939

/usr/bin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1939

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:2005

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:2006

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:2086

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:2087

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:2107

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:2108

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:2117

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:2118

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:2119

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:2120

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:2123

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:2124

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:2127

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:2128

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:2134

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:2135

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2105

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2106

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2109

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2110

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2121

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2122

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2125

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2126

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2130

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2131

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2132

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2133

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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