b7dd3bce3ebfbc2d5e3a9f00d47f27cb6a5895c4618c878e314e573a7c216df1

Analysis

max time kernel
157s
max time network
154s
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/2378e76aba1ad6e0c937fb39989217bf0de616fdad4726c0f4233bf5414cde86
Size

8.7MB
MD5

3a371a09bfcba3d545465339f1e1d481
SHA1

7f5712878929aab6a2ab297072a5a5f3d3c15a01
SHA256

2378e76aba1ad6e0c937fb39989217bf0de616fdad4726c0f4233bf5414cde86
SHA512

35efc5129316ea697f1f4591c37e70c74b643942cdb3cb1aac6a0f14f5d133da39c0c393439490bc059361e9feeacee3d4056f88700f56dfe1088ba0ab22613b
SSDEEP

98304:f/VrKprvLVtb8E0dD71puy219CZ2gT3/3Khbw+Aw:3VrKpjROndH1puy219CZBShb

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:

2378e76aba1ad6e0c937fb39989217bf0de616fdad4726c0f4233bf5414cde86

description	ioc	process
File opened for modification	/root/.ssh/authorized_keys	2378e76aba1ad6e0c937fb39989217bf0de616fdad4726c0f4233bf5414cde86
File opened for modification	/root/.ssh/authorized_keys

Deletes itself 1 IoCs

Processes:

2378e76aba1ad6e0c937fb39989217bf0de616fdad4726c0f4233bf5414cde86

pid process

1896 2378e76aba1ad6e0c937fb39989217bf0de616fdad4726c0f4233bf5414cde86
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
1896	2378e76aba1ad6e0c937fb39989217bf0de616fdad4726c0f4233bf5414cde86

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:

2378e76aba1ad6e0c937fb39989217bf0de616fdad4726c0f4233bf5414cde86

description	ioc	process
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/2378e76aba1ad6e0c937fb39989217bf0de616fdad4726c0f4233bf5414cde86	2378e76aba1ad6e0c937fb39989217bf0de616fdad4726c0f4233bf5414cde86
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/2378e76aba1ad6e0c937fb39989217bf0de616fdad4726c0f4233bf5414cde86

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

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

Processes:

freefreeuptimefreeuptimeuptimeuptimefreeuptimefreefreefreeuptimefreeuptimefreefreeuptimefreefreeuptimeuptimefreeuptimeuptimefreeuptimefreeuptimeuptime

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	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	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	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	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

Enumerates kernel/hardware configuration 1 TTPs 2 IoCs

Reads contents of /sys virtual filesystem to enumerate system information.

System Information Discovery

T1082

Processes:

journalctl2378e76aba1ad6e0c937fb39989217bf0de616fdad4726c0f4233bf5414cde86

description	ioc	process
File opened for reading	/sys/firmware/efi/efivars/SystemdOptions-8cf2644b-4b0b-428f-9387-6d876050dc67	journalctl
File opened for reading	/sys/kernel/mm/transparent_hugepage/hpage_pmd_size	2378e76aba1ad6e0c937fb39989217bf0de616fdad4726c0f4233bf5414cde86

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

Processes:

freefreeuptimefreeuptimefreeuptimefreeuptime

description	ioc
File opened for reading	/proc/1101/cmdline
File opened for reading	/proc/1132/cmdline
File opened for reading	/proc/1097/stat
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/997/cmdline
File opened for reading	/proc/1511/stat
File opened for reading	/proc/87/stat
File opened for reading	/proc/1080/cmdline
File opened for reading	/proc/1132/stat
File opened for reading	/proc/1442/stat
File opened for reading	/proc/1493/stat
File opened for reading	/proc/19/stat
File opened for reading	/proc/76/stat
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/self/auxv	uptime
File opened for reading	/proc/567/stat
File opened for reading	/proc/679/stat
File opened for reading	/proc/1316/stat
File opened for reading	/proc/271/stat
File opened for reading	/proc/513/stat
File opened for reading	/proc/967/stat
File opened for reading	/proc/102/cmdline
File opened for reading	/proc/9/cmdline
File opened for reading	/proc/170/stat
File opened for reading	/proc/1473/cmdline
File opened for reading	/proc/683/cmdline
File opened for reading	/proc/1895/stat
File opened for reading	/proc/24/stat
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/784/cmdline
File opened for reading	/proc/797/cmdline
File opened for reading	/proc/15/stat
File opened for reading	/proc/499/stat
File opened for reading	/proc/5/stat
File opened for reading	/proc/1904/cmdline
File opened for reading	/proc/804/cmdline
File opened for reading	/proc/976/cmdline
File opened for reading	/proc/1085/stat
File opened for reading	/proc/164/stat
File opened for reading	/proc/550/stat
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/sys/kernel/osrelease	free
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/self/auxv	uptime
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/1241/cmdline
File opened for reading	/proc/77/cmdline
File opened for reading	/proc/1292/stat
File opened for reading	/proc/18/stat
File opened for reading	/proc/self/auxv	free
File opened for reading	/proc/499/cmdline
File opened for reading	/proc/670/cmdline
File opened for reading	/proc/82/cmdline
File opened for reading	/proc/1411/stat
File opened for reading	/proc/175/stat
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/271/cmdline
File opened for reading	/proc/1403/stat
File opened for reading	/proc/71/stat
File opened for reading	/proc/801/stat
File opened for reading	/proc/82/stat
File opened for reading	/proc/936/stat

/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/2378e76aba1ad6e0c937fb39989217bf0de616fdad4726c0f4233bf5414cde86
/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/2378e76aba1ad6e0c937fb39989217bf0de616fdad4726c0f4233bf5414cde86
1⤵
- Adds new SSH keys
- Deletes itself
- Deletes log files
- Enumerates kernel/hardware configuration
PID:1896

/usr/bin/uname
uname -a
2⤵
PID:1909

/usr/bin/cat
cat /proc/cpuinfo
2⤵
- Checks CPU configuration
PID:1910

/usr/bin/cat
cat /etc/issue
2⤵
PID:1911

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1912

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1913

/usr/bin/journalctl
journalctl -S "@0" -u sshd
2⤵
- Reads EFI boot settings
- Enumerates kernel/hardware configuration
PID:1914

/usr/bin/cat
cat "/var/log/auth*"
2⤵
PID:1915

/usr/bin/zcat
zcat "/var/log/auth*"
2⤵
PID:1916

/usr/local/sbin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1916

/usr/local/bin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1916

/usr/sbin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1916

/usr/bin/gzip
gzip -cd "/var/log/auth*"
2⤵
PID:1916

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1918

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:1919

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:1920

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:1921

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:2001

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

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:2086

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:2093

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:2094

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:2099

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:2100

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:2101

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:2102

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:2103

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:2104

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
- Reads runtime system information
PID:2106

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

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:2108

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:2109

/usr/bin/free
free -m
2⤵
- Reads CPU attributes
PID:2110

/usr/bin/uptime
uptime
2⤵
- Reads CPU attributes
PID:2111

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2002

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2095

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2096

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2097

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2098

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2112

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2113

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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