b7dd3bce3ebfbc2d5e3a9f00d47f27cb6a5895c4618c878e314e573a7c216df1

Analysis

max time kernel
151s
max time network
150s
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/0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
Size

8.7MB
MD5

0263de27fd997a4904ee4a92f91ac733
SHA1

da090fd76b2d92320cf7e55666bb5bd8f50796c9
SHA256

0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
SHA512

09ef02532eb7c3a968c1d04bf1f3aa9a4bf400f8485d3be596d7db3aed5f705fc1f85a1f6218397a70830ad747aa03c61b9c5b1cca24c2620cdbb3e5361db194
SSDEEP

98304:bKwGam/zeDrZCDcryHlc5Qp+FLk0h6u9SrS2D8t7Xk:bKwGam/z4C3FKQ8FLTh6u9S4

Score

8^/10

antivm infostealer 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

1527
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
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/0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
Enumerates running processes
Discovers information about currently running processes on the system

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

pid
1527

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

description	ioc
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

Processes:

freefreeuptimeuptimeuptimefreeuptimeuptimefreeuptimefreeuptimefreeuptimeuptimefreeuptimeuptimeuptimeuptimefreefreefreefreeuptimefreeuptimefreefreefree

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	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	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	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

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:

freeuptimefreeuptimeuptimefreeuptimefreeuptimefree

description	ioc
File opened for reading	/proc/118/cmdline
File opened for reading	/proc/1413/cmdline
File opened for reading	/proc/778/stat
File opened for reading	/proc/173/cmdline
File opened for reading	/proc/857/cmdline
File opened for reading	/proc/1074/stat
File opened for reading	/proc/990/stat
File opened for reading	/proc/1831/cmdline
File opened for reading	/proc/452/cmdline
File opened for reading	/proc/6/cmdline
File opened for reading	/proc/1412/stat
File opened for reading	/proc/1578/stat
File opened for reading	/proc/19/stat
File opened for reading	/proc/92/stat
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/497/cmdline
File opened for reading	/proc/673/stat
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/1424/cmdline
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/10/cmdline
File opened for reading	/proc/1171/cmdline
File opened for reading	/proc/24/cmdline
File opened for reading	/proc/8/cmdline
File opened for reading	/proc/1040/stat
File opened for reading	/proc/159/stat
File opened for reading	/proc/582/stat
File opened for reading	/proc/1424/stat
File opened for reading	/proc/82/stat
File opened for reading	/proc/966/cmdline
File opened for reading	/proc/1513/stat
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/852/cmdline
File opened for reading	/proc/78/cmdline
File opened for reading	/proc/self/auxv	uptime
File opened for reading	/proc/102/cmdline
File opened for reading	/proc/808/cmdline
File opened for reading	/proc/1105/stat
File opened for reading	/proc/1416/stat
File opened for reading	/proc/175/stat
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/1065/stat
File opened for reading	/proc/1077/stat
File opened for reading	/proc/171/stat
File opened for reading	/proc/77/stat
File opened for reading	/proc/536/stat
File opened for reading	/proc/808/stat
File opened for reading	/proc/9/stat
File opened for reading	/proc/1433/cmdline
File opened for reading	/proc/13/stat
File opened for reading	/proc/174/stat
File opened for reading	/proc/91/stat
File opened for reading	/proc/1093/cmdline
File opened for reading	/proc/93/cmdline
File opened for reading	/proc/7/stat
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/163/cmdline
File opened for reading	/proc/1420/stat
File opened for reading	/proc/559/stat
File opened for reading	/proc/1085/cmdline

/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/0ab8836efcaa62c7daac314e0b7ab1679319b2901578fd9e95ec3476b4c1a732
1⤵
PID:1525

/usr/bin/uname
uname -a
1⤵
PID:1535

/usr/bin/cat
cat /proc/cpuinfo
1⤵
- Checks CPU configuration
PID:1538

/usr/bin/cat
cat /etc/issue
1⤵
PID:1539

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1540

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1541

/usr/bin/journalctl
journalctl -S "@0" -u sshd
1⤵
- Reads EFI boot settings
- Enumerates kernel/hardware configuration
PID:1578

/usr/bin/cat
cat "/var/log/auth*"
1⤵
PID:1579

/usr/bin/zcat
zcat "/var/log/auth*"
1⤵
PID:1580

/usr/local/sbin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1580

/usr/local/bin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1580

/usr/sbin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1580

/usr/bin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1580

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1944

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1945

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1946

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1947

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1965

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1966

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2044

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

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2113

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2114

/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
PID:2123

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2124

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

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

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2127

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2128

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2129

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2130

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

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

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2134

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2135

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2136

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2137

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2138

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2139

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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