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Linux Analysis Report gsf3z44v5s

Overview

General Information

Sample Name:	gsf3z44v5s
Analysis ID:	553488
MD5:	5502094e79b489ff942ebe314f34a34a
SHA1:	3faad8451da16e6ee0f003b9d0070710f42a1b90
SHA256:	6f5ddee695a158e5028c3105754df18a00182db560288f37279da6143de73b84
Tags:	32armelfmirai
Infos:

Detection

Score:	52
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

Sample is packed with UPX

Sample contains only a LOAD segment without any section mappings

Uses the "uname" system call to query kernel version information (possible evasion)

Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)

Executes the "rm" command used to delete files or directories

Classification

Analysis Advice

Static ELF header machine description suggests that the sample might only run correctly on MIPS or ARM architectures

All HTTP servers contacted by the sample do not answer. Likely the sample is an old dropper which does no longer work

Non-zero exit code suggests an error during the execution. Lookup the error code for hints.

Static ELF header machine description suggests that the sample might not execute correctly on this machine

General Information

Joe Sandbox Version:	34.0.0 Boulder Opal
Analysis ID:	553488
Start date:	15.01.2022
Start time:	01:18:21
Joe Sandbox Product:	CloudBasic
Overall analysis duration:	0h 4m 51s
Hypervisor based Inspection enabled:	false
Report type:	light
Sample file name:	gsf3z44v5s
Cookbook file name:	defaultlinuxfilecookbook.jbs
Analysis system description:	Ubuntu Linux 20.04 x64 (Kernel 5.4.0-72, Firefox 91.0, Evince Document Viewer 3.36.10, LibreOffice 6.4.7.2, OpenJDK 11.0.11)
Analysis Mode:	default
Detection:	MAL
Classification:	mal52.evad.lin@0/0@0/0

Process Tree

system is lnxubuntu20

gsf3z44v5s (PID: 5212, Parent: 5110, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/gsf3z44v5s

dash New Fork (PID: 5253, Parent: 4331)

rm (PID: 5253, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.gnhgFAvsJy /tmp/tmp.t3qRXe8EQV /tmp/tmp.wpv1yxnV4b

cleanup

Yara Overview

No yara matches

Jbx Signature Overview

Click to jump to signature section

Show All Signature Results

AV Detection:

Multi AV Scanner detection for submitted file

Show sources

Source: gsf3z44v5s	Virustotal: Detection: 22%			Perma Link
Source: gsf3z44v5s	ReversingLabs: Detection: 37%

Source: global traffic	TCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: global traffic	TCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80
Source: global traffic	TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: global traffic	TCP traffic: 192.168.2.23:39242 -> 34.249.145.219:443

Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 39242 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 443

Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 124.19.84.128
Source: unknown	TCP traffic detected without corresponding DNS query: 124.19.84.128
Source: unknown	TCP traffic detected without corresponding DNS query: 177.207.193.26
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 121.15.190.47
Source: unknown	TCP traffic detected without corresponding DNS query: 183.5.95.66

Source: gsf3z44v5s

String found in binary or memory: http://upx.sf.net

Source: LOAD without section mappings

Program segment: 0x8000

Source: classification engine

Classification label: mal52.evad.lin@0/0@0/0

Data Obfuscation:

Sample is packed with UPX

Show sources

Source: initial sample	String containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sample	String containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sample	String containing UPX found: $Id: UPX 3.94 Copyright (C) 1996-2017 the UPX Team. All Rights Reserved. $

Source: /usr/bin/dash (PID: 5253)

Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.gnhgFAvsJy /tmp/tmp.t3qRXe8EQV /tmp/tmp.wpv1yxnV4b

Source: /tmp/gsf3z44v5s (PID: 5212)

Queries kernel information via 'uname':

Source: gsf3z44v5s, 5212.1.000000004812aa68.00000000df34d10d.rw-.sdmp	Binary or memory string: ewx86_64/usr/bin/qemu-arm/tmp/gsf3z44v5sSUDO_USER=saturninoPATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/binDISPLAY=:1.0XAUTHORITY=/run/user/1000/gdm/XauthoritySUDO_UID=1000TERM=xterm-256colorCOLORTERM=truecolorLOGNAME=rootUSER=rootLANG=en_US.UTF-8SUDO_COMMAND=/bin/bashHOME=/rootMAIL=/var/mail/rootSUDO_GID=1000SHELL=/bin/bash/tmp/gsf3z44v5s
Source: gsf3z44v5s, 5212.1.00000000688f61e8.00000000b46b9fda.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: gsf3z44v5s, 5212.1.000000004812aa68.00000000df34d10d.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: gsf3z44v5s, 5212.1.00000000688f61e8.00000000b46b9fda.rw-.sdmp	Binary or memory string: &V!/etc/qemu-binfmt/arm

Mitre Att&ck Matrix

Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Exfiltration	Command and Control	Network Effects	Remote Service Effects	Impact
Valid Accounts	Windows Management Instrumentation	Path Interception	Path Interception	Obfuscated Files or Information1	OS Credential Dumping	Security Software Discovery11	Remote Services	Data from Local System	Exfiltration Over Other Network Medium	Encrypted Channel1	Eavesdrop on Insecure Network Communication	Remotely Track Device Without Authorization	Modify System Partition
Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	File Deletion1	LSASS Memory	Application Window Discovery	Remote Desktop Protocol	Data from Removable Media	Exfiltration Over Bluetooth	Application Layer Protocol1	Exploit SS7 to Redirect Phone Calls/SMS	Remotely Wipe Data Without Authorization	Device Lockout

Malware Configuration

No configs have been found

Behavior Graph

Hide Legend

Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Number of created Files
Is malicious
Internet

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
gsf3z44v5s	22%	Virustotal		Browse
gsf3z44v5s	37%	ReversingLabs	Linux.Trojan.Mirai

Dropped Files

No Antivirus matches

Domains

No Antivirus matches

URLs

No Antivirus matches

Domains and IPs

Contacted Domains

No contacted domains info

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://upx.sf.net	gsf3z44v5s	false		high

Contacted IPs

No. of IPs < 25%
25% < No. of IPs < 50%
50% < No. of IPs < 75%
75% < No. of IPs

Public

IP	Domain	Country	ASN	ASN Name	Malicious
183.5.95.66	unknown	China	4134	CHINANET-BACKBONENo31Jin-rongStreetCN	false
34.249.145.219	unknown	United States	16509	AMAZON-02US	false
177.207.193.26	unknown	Brazil	18881	TELEFONICABRASILSABR	false
124.19.84.128	unknown	Australia	7474	OPTUSCOM-AS01-AUSingTelOptusPtyLtdAU	false
121.15.190.47	unknown	China	58466	CT-GUANGZHOU-IDCCHINANETGuangdongprovincenetworkCN	false
109.202.202.202	unknown	Switzerland	13030	INIT7CH	false
91.189.91.43	unknown	United Kingdom	41231	CANONICAL-ASGB	false
91.189.91.42	unknown	United Kingdom	41231	CANONICAL-ASGB	false

Runtime Messages

Command:	/tmp/gsf3z44v5s
Exit Code:	127
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Joe Sandbox View / Context

IPs

No context

Domains

No context

ASN

No context

JA3 Fingerprints

No context

Dropped Files

No context

Created / dropped Files

No created / dropped files found

Static File Info

General
File type:	ELF 32-bit LSB executable, ARM, version 1 (ARM), statically linked, stripped
Entropy (8bit):	7.915655038267032
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	gsf3z44v5s
File size:	22124
MD5:	5502094e79b489ff942ebe314f34a34a
SHA1:	3faad8451da16e6ee0f003b9d0070710f42a1b90
SHA256:	6f5ddee695a158e5028c3105754df18a00182db560288f37279da6143de73b84
SHA512:	bf80e4710e25abacde5eb845057ac89c900afa901dab74c5ac4523c3985b798db7d4b0c63b85d47b6608c6bb0eb07bf2ffe07e9ade057770a7c312ecf31dd166
SSDEEP:	384:pUOI4RRYaPzxj1WBxhsqAWPIizpZ5DFILLFiM1f4ybVeR80cU7SmkohymdGUop5v:pUOIMRY+zxYba9OJDFILoMZEC0qros3l
File Content Preview:	.ELF...a..........(.....H...4...........4. ...(......................T...T...............?..........................Q.td..............................CvUPX!........\...\.......q..........?.E.h;.}...^.......+P.f.k.@......}6N.h.......X...\|.?..E(...p....i..]

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	ARM
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	ARM - ABI
ABI Version:	0
Entry Point Address:	0xc348
Flags:	0x2
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	0
Section Header Size:	40
Number of Section Headers:	0
Header String Table Index:	0

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align
LOAD	0x0	0x8000	0x8000	0x54f7	0x54f7	4.0623	0x5	R E	0x8000
LOAD	0x3fb4	0x1bfb4	0x1bfb4	0x0	0x0	0.0000	0x6	RW	0x8000
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Jan 15, 2022 01:19:06.169576883 CET	42836	443	192.168.2.23	91.189.91.43
Jan 15, 2022 01:19:06.681582928 CET	42516	80	192.168.2.23	109.202.202.202
Jan 15, 2022 01:19:09.990690947 CET	23	51944	124.19.84.128	192.168.2.23
Jan 15, 2022 01:19:09.990761042 CET	23	51944	124.19.84.128	192.168.2.23
Jan 15, 2022 01:19:09.990928888 CET	51944	23	192.168.2.23	124.19.84.128
Jan 15, 2022 01:19:09.990987062 CET	51944	23	192.168.2.23	124.19.84.128
Jan 15, 2022 01:19:19.808527946 CET	23	48578	177.207.193.26	192.168.2.23
Jan 15, 2022 01:19:19.808722973 CET	48578	23	192.168.2.23	177.207.193.26
Jan 15, 2022 01:19:20.761075974 CET	43928	443	192.168.2.23	91.189.91.42
Jan 15, 2022 01:19:28.375427008 CET	39242	443	192.168.2.23	34.249.145.219
Jan 15, 2022 01:19:29.400588989 CET	39242	443	192.168.2.23	34.249.145.219
Jan 15, 2022 01:19:31.416528940 CET	39242	443	192.168.2.23	34.249.145.219
Jan 15, 2022 01:19:33.048413992 CET	42836	443	192.168.2.23	91.189.91.43
Jan 15, 2022 01:19:35.608330011 CET	39242	443	192.168.2.23	34.249.145.219
Jan 15, 2022 01:19:37.144268036 CET	42516	80	192.168.2.23	109.202.202.202
Jan 15, 2022 01:19:43.799897909 CET	39242	443	192.168.2.23	34.249.145.219
Jan 15, 2022 01:19:59.927233934 CET	39242	443	192.168.2.23	34.249.145.219
Jan 15, 2022 01:20:01.719192028 CET	43928	443	192.168.2.23	91.189.91.42
Jan 15, 2022 01:20:06.878777981 CET	23	58932	121.15.190.47	192.168.2.23
Jan 15, 2022 01:20:06.878971100 CET	58932	23	192.168.2.23	121.15.190.47
Jan 15, 2022 01:20:17.953002930 CET	23	37974	183.5.95.66	192.168.2.23
Jan 15, 2022 01:20:17.953170061 CET	37974	23	192.168.2.23	183.5.95.66

System Behavior

Analysis Process: gsf3z44v5s PID: 5212 Parent PID: 5110

General

Start time:	01:19:03
Start date:	15/01/2022
Path:	/tmp/gsf3z44v5s
Arguments:	/tmp/gsf3z44v5s
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Analysis Process: dash PID: 5253 Parent PID: 4331

General

Start time:	01:20:27
Start date:	15/01/2022
Path:	/usr/bin/dash
Arguments:	n/a
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Analysis Process: rm PID: 5253 Parent PID: 4331

General

Start time:	01:20:27
Start date:	15/01/2022
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.gnhgFAvsJy /tmp/tmp.t3qRXe8EQV /tmp/tmp.wpv1yxnV4b
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Description:	Adversaries may attempt to make an executable or file difficult to discover or analyze by encrypting, encoding, or otherwise obfuscating its contents on the system or in transit. This is common behavior that can be used across different platforms and the network to evade defenses.
Tactics:	Defense Evasion
Data Sources:	Binary file metadata, Email gateway, Environment variable, File monitoring, Malware reverse engineering, Network intrusion detection system, Network protocol analysis, Process command-line parameters, Process monitoring, Process use of network, SSL/TLS inspection, Windows event logs
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may delete files left behind by the actions of their intrusion activity. Malware, tools, or other non-native files dropped or created on a system by an adversary may leave traces to indicate to what was done within a network and how. Removal of these files can occur during an intrusion, or as part of a post-intrusion process to minimize the adversary's footprint.
Tactics:	Defense Evasion
Data Sources:	Binary file metadata, File monitoring, Process command-line parameters
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to get a listing of security software, configurations, defensive tools, and sensors that are installed on a system or in a cloud environment. This may include things such as firewall rules and anti-virus. Adversaries may use the information from Security Software Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	AWS CloudTrail logs, Azure activity logs, File monitoring, Process command-line parameters, Process monitoring, Stackdriver logs
Platforms:	AWS, Azure, Azure AD, GCP, Linux, macOS, Office 365, SaaS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may employ a known encryption algorithm to conceal command and control traffic rather than relying on any inherent protections provided by a communication protocol. Despite the use of a secure algorithm, these implementations may be vulnerable to reverse engineering if secret keys are encoded and/or generated within malware samples/configuration files.
Tactics:	Command and Control
Data Sources:	Malware reverse engineering, Netflow/Enclave netflow, Packet capture, Process monitoring, Process use of network, SSL/TLS inspection
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.
Tactics:	Command and Control
Data Sources:	DNS records, Netflow/Enclave netflow, Network protocol analysis, Packet capture, Process monitoring, Process use of network
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

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Warning!

Linux Analysis Report gsf3z44v5s

Overview

General Information

Detection

Signatures

Classification

Analysis Advice

General Information

Process Tree

Yara Overview

Jbx Signature Overview

AV Detection:

Networking:

System Summary:

Data Obfuscation:

Persistence and Installation Behavior:

Malware Analysis System Evasion:

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

URLs from Memory and Binaries

Contacted IPs

Public

Runtime Messages

Joe Sandbox View / Context

IPs

Domains

ASN

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

Static ELF Info

ELF header

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: gsf3z44v5s PID: 5212 Parent PID: 5110

General

Analysis Process: dash PID: 5253 Parent PID: 4331

General

Analysis Process: rm PID: 5253 Parent PID: 4331

General