b7dd3bce3ebfbc2d5e3a9f00d47f27cb6a5895c4618c878e314e573a7c216df1

Analysis

max time kernel
160s
max time network
164s
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/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

description	ioc	Process
File opened for modification	/root/.ssh/authorized_keys	Process not Found
File opened for modification	/root/.ssh/authorized_keys	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742

Deletes itself 1 IoCs

pid
1903

Reads EFI boot settings 1 IoCs

Reads EFI boot settings from the efivars filesystem, may contain security secrets or sensitive data.

infostealer

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

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

description	ioc	Process
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742	Process not Found
File deleted	/var/log/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742

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

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

description	ioc	Process
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	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	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	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 1 IoCs

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

System Information Discovery

T1082

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.

description	ioc	Process
File opened for reading	/proc/1418/cmdline	Process not Found
File opened for reading	/proc/166/cmdline	Process not Found
File opened for reading	/proc/74/cmdline	Process not Found
File opened for reading	/proc/532/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/441/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/946/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/452/stat	Process not Found
File opened for reading	/proc/502/stat	Process not Found
File opened for reading	/proc/85/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/85/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1840/stat	Process not Found
File opened for reading	/proc/928/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/973/cmdline	Process not Found
File opened for reading	/proc/1074/cmdline	Process not Found
File opened for reading	/proc/490/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/74/stat	Process not Found
File opened for reading	/proc/996/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/927/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/90/stat	Process not Found
File opened for reading	/proc/803/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/115/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/14/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/1110/stat	Process not Found
File opened for reading	/proc/399/stat	Process not Found
File opened for reading	/proc/456/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/76/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/8/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1816/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/447/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1085/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/7/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/996/stat	Process not Found
File opened for reading	/proc/680/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/5/stat	Process not Found
File opened for reading	/proc/805/stat	Process not Found
File opened for reading	/proc/84/stat	Process not Found
File opened for reading	/proc/85/stat	Process not Found
File opened for reading	/proc/502/cmdline	Process not Found
File opened for reading	/proc/269/cmdline	Process not Found
File opened for reading	/proc/1051/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/22/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/565/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/805/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1156/cmdline	Process not Found
File opened for reading	/proc/680/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/102/stat	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/1917/stat	Process not Found
File opened for reading	/proc/4/stat	Process not Found
File opened for reading	/proc/503/stat	Process not Found
File opened for reading	/proc/1319/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
File opened for reading	/proc/self/auxv	uptime
File opened for reading	/proc/503/cmdline	Process not Found
File opened for reading	/proc/932/cmdline	Process not Found
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/1060/cmdline	Process not Found
File opened for reading	/proc/811/stat	Process not Found
File opened for reading	/proc/1051/cmdline	Process not Found
File opened for reading	/proc/677/cmdline	Process not Found
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/480/stat	Process not Found

/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
/tmp/The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
1⤵
- Adds new SSH keys
- Deletes log files
- Reads runtime system information
PID:1900
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2061
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2062
- /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:2090
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:2091
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2094
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:2095
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2098
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2099
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2102
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2103
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2104
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2105
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:2108
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:2109

/usr/bin/uname
uname -a
1⤵
PID:1912

/usr/bin/cat
cat /proc/cpuinfo
1⤵
- Checks CPU configuration
PID:1913

/usr/bin/cat
cat /etc/issue
1⤵
PID:1914

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1915

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1916

/usr/bin/journalctl
journalctl -S "@0" -u sshd
1⤵
- Reads EFI boot settings
- Enumerates kernel/hardware configuration
PID:1917

/usr/bin/cat
cat "/var/log/auth*"
1⤵
PID:1918

/usr/bin/zcat
zcat "/var/log/auth*"
1⤵
PID:1919

/usr/local/sbin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1919

/usr/local/bin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1919

/usr/sbin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1919

/usr/bin/gzip
gzip -cd "/var/log/auth*"
1⤵
PID:1919

/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
PID:2082

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

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2092

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

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

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

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:2100

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:2101

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

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:2107

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

/root/.ssh/authorized_keys

Filesize
381B

MD5
9da18d38b6dd4c4aa84642378d63fa89

SHA1
c5a976691e4b5963b5e760044f22cc9685268db6

SHA256
43062900b2539d8d1f67f30fa7042c56b53541f63875b5f0de5d8fbde0e0a8bf

SHA512
222b20b5b2ff8956c13dbac1f8d3f81435613b751913d65f4c4082ea9c1a7c8ae91be17a24ef4ae0c708bfe09daab552bb209615714d70acfaaed89c536c71b3

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads