2d9bb4e3fddfe5dc51c54cba74a1eb594c7be9d34774524d972350edd85e6499

Resubmissions

08-02-2024 01:32

240208-bx7pqsbg96 10

27-01-2024 14:19

240127-rmwgqadhc4 10

Analysis

max time kernel
153s
max time network
145s
platform
ubuntu-18.04_amd64
resource
ubuntu1804-amd64-20231222-en
resource tags

arch:amd64arch:i386image:ubuntu1804-amd64-20231222-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
submitted
27-01-2024 14:19

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General

Target

The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1
Size

8.7MB
MD5

76fe4fdd628218f630ba50f91ceba852
SHA1

6e90f2fe619597115e5b8dd8b0d1fb0c8ad33fa4
SHA256

041bc20ca8ac3161098cbc976e67e3c0f1b672ad36ecbe22fd21cbd53bcaa742
SHA512

7956505ae0d8479a92ddf97bb09a757566ef526934ee06b4273f0fc450e4da9204808ffa4f4674f4e6e313eb718a7c65f258ef8d23b9769b8aa12d47610d8011
SSDEEP

98304:f27or8Dynb9c4EHv9/fW/NQXPvTCaedHuaJE3fSdCnKg27Xk:f27or8DyO4UnwQfvTCXdHua4No

Score

8^/10

antivm 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:

041bc20ca8ac3161098cbc976e67e3c0f1

description	ioc
File opened for modification	/root/.ssh/authorized_keys
File opened for modification	/root/.ssh/authorized_keys	041bc20ca8ac3161098cbc976e67e3c0f1

Deletes itself 1 IoCs

Processes:

pid

1615
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
1615

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:

041bc20ca8ac3161098cbc976e67e3c0f1

description	ioc
File deleted	/var/log/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1
File deleted	/var/log/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1	041bc20ca8ac3161098cbc976e67e3c0f1

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

Reads CPU attributes 1 TTPs 30 IoCs

System Information Discovery

T1082

Processes:

freefreeuptimefreefreeuptimefreeuptimefreefreeuptimefreeuptimefreeuptimeuptimefreeuptimeuptimefreefreeuptimefreefreeuptimeuptimeuptimefreeuptimeuptime

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	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	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	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	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

Reads runtime system information 64 IoCs

Reads data from /proc virtual filesystem.

Processes:

041bc20ca8ac3161098cbc976e67e3c0f1uptimefreeuptime

description	ioc
File opened for reading	/proc/22/stat
File opened for reading	/proc/666/stat	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/31/cmdline
File opened for reading	/proc/84/cmdline
File opened for reading	/proc/82/stat	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/sys/kernel/osrelease	uptime
File opened for reading	/proc/1435/cmdline
File opened for reading	/proc/160/stat	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/161/stat	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/23/stat	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/1017/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/1379/stat
File opened for reading	/proc/166/stat
File opened for reading	/proc/105/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/meminfo	free
File opened for reading	/proc/1183/cmdline
File opened for reading	/proc/576/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/1176/cmdline
File opened for reading	/proc/1132/stat
File opened for reading	/proc/200/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/480/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/779/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/80/cmdline
File opened for reading	/proc/1142/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/258/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/3/cmdline
File opened for reading	/proc/1060/stat
File opened for reading	/proc/14/stat
File opened for reading	/proc/35/stat
File opened for reading	/proc/1158/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/1595/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/561/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/5/cmdline
File opened for reading	/proc/1092/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/1240/stat
File opened for reading	/proc/1435/stat	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/172/stat	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/116/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/34/cmdline
File opened for reading	/proc/605/stat	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/1178/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/1145/cmdline
File opened for reading	/proc/1167/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/uptime	uptime
File opened for reading	/proc/1154/stat	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/1208/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/1042/cmdline
File opened for reading	/proc/1352/stat
File opened for reading	/proc/1062/stat	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/1292/stat	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/714/stat	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/32/stat
File opened for reading	/proc/1060/cmdline
File opened for reading	/proc/794/cmdline
File opened for reading	/proc/12/stat
File opened for reading	/proc/1/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/35/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/488/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/loadavg	uptime
File opened for reading	/proc/24/cmdline
File opened for reading	/proc/756/stat
File opened for reading	/proc/166/cmdline	041bc20ca8ac3161098cbc976e67e3c0f1
File opened for reading	/proc/1036/cmdline
File opened for reading	/proc/1111/cmdline

/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1
/tmp/The-MALWARE-Repo-master/The-MALWARE-Repo-master/Botnets/FritzFrog/041bc20ca8ac3161098cbc976e67e3c0f1
1⤵
- Adds new SSH keys
- Deletes log files
- Reads runtime system information
PID:1613
- /bin/journalctl
  journalctl -S "@0" -u sshd
  2⤵
  PID:1640
- /bin/cat
  cat "/var/log/auth*"
  2⤵
  PID:1641
- /bin/zcat
  zcat "/var/log/auth*"
  2⤵
  PID:1642
- /bin/gzip
  gzip -cd "/var/log/auth*"
  2⤵
  PID:1642
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:1643
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:1644
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:1649
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:1650
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:1653
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:1654
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:1657
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:1658
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:1661
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  - Reads runtime system information
  PID:1662
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:1665
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:1666
- /usr/bin/free
  free -m
  2⤵
  - Reads CPU attributes
  PID:1671
- /usr/bin/uptime
  uptime
  2⤵
  - Reads CPU attributes
  PID:1672

/bin/uname
uname -a
1⤵
PID:1625

/bin/cat
cat /proc/cpuinfo
1⤵
- Checks CPU configuration
PID:1626

/bin/cat
cat /etc/issue
1⤵
PID:1627

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1628

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1629

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1645

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1646

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1651

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1652

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1655

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1656

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1659

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1660

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1663

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1664

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1667

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
- Reads runtime system information
PID:1668

/usr/bin/free
free -m
1⤵
- Reads CPU attributes
PID:1669

/usr/bin/uptime
uptime
1⤵
- Reads CPU attributes
PID:1670

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

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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