MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f8ef3e3b18e72eebb4b18edbc90f7f5851ab0af044473fa2856fc974f0c33d6c. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Cutwail


Vendor detections: 12


Intelligence 12 IOCs YARA 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f8ef3e3b18e72eebb4b18edbc90f7f5851ab0af044473fa2856fc974f0c33d6c
SHA3-384 hash: 17d0936305848b3fd8d4ff0f695ce6ce3ed995a140cc731a97b3e0a447f7bd535d0e95d9bf35cb1c98cc059cf3ad6e3b
SHA1 hash: db93260f6bdeb2321fd73019af3d6182c97fd2c5
MD5 hash: 6bb40ed95f770955ea7cf27e4785612e
humanhash: cola-pluto-north-double
File name:6bb40ed95f770955ea7cf27e4785612e
Download: download sample
Signature Cutwail
Create hunting rule
File size:545'792 bytes
First seen:2023-05-31 12:40:04 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 02ecafa93e16cc93afff7f406beb81aa (1 x Cutwail)
ssdeep 12288:NJsZ3dUdAz1aVlOsBfDtNK+UmDFZIdP03d0cMvNc:rsH6FvOYtNK+HrId03dEvS
Threatray 3 similar samples on MalwareBazaar
TLSH T1CBC4BE21FB87F031ED9B143418B5B2FF146DA56103AA80FB72D8CA6D3A105E25A74F1B
TrID 56.8% (.EXE) InstallShield setup (43053/19/16)
13.8% (.EXE) Win64 Executable (generic) (10523/12/4)
8.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
5.9% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter zbetcheckin
Tags:32 Cutwail exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
343
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
6bb40ed95f770955ea7cf27e4785612e
Verdict:
Malicious activity
Analysis date:
2023-05-31 12:42:01 UTC
Tags:
installer
Link:
https://app.any.run/tasks/afc6fa24-11f8-4f6f-8226-22c4757277b2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/394098/
Detection(s):
SecuriteInfo.com.FileRepMalware.22491.19936.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware keylogger lolbin packed
Link:
https://www.filescan.io/uploads/6477405ee6cc9218e8eb834b/reports/74310454-42cf-4aa8-aeda-7d4ef1e51a04/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/f8ef3e3b18e72eebb4b18edbc90f7f5851ab0af044473fa2856fc974f0c33d6c
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Cutwail
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/1e8824ae-e14a-4565-99b1-523e9183d6d0
Result
Threat name:
Pushdo
Create hunting rule
Detection:
malicious
Classification:
spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1246103
Signature
Antivirus detection for URL or domain
Contains functionality to compare user and computer (likely to detect sandboxes)
Contains functionality to inject code into remote processes
Contains functionality to inject threads in other processes
Drops PE files to the user root directory
Found stalling execution ending in API Sleep call
Injects a PE file into a foreign processes
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Send many emails (e-Mail Spam)
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to resolve many domain names, but no domain seems valid
Writes to foreign memory regions
Yara detected Backdoor Pushdo
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 879119 Sample: fs7AQcREFX.exe Startdate: 31/05/2023 Architecture: WINDOWS Score: 100 53 wnit.org 2->53 55 websy.com 2->55 57 395 other IPs or domains 2->57 91 Snort IDS alert for network traffic 2->91 93 Antivirus detection for URL or domain 2->93 95 Multi AV Scanner detection for submitted file 2->95 101 2 other signatures 2->101 8 pigalicapi.exe 48 2->8         started        12 fs7AQcREFX.exe 3 68 2->12         started        15 pigalicapi.exe 48 2->15         started        signatures3 97 System process connects to network (likely due to code injection or exploit) 55->97 99 Tries to resolve many domain names, but no domain seems valid 55->99 process4 dnsIp5 59 skgm.ru 8->59 67 169 other IPs or domains 8->67 103 Multi AV Scanner detection for dropped file 8->103 105 Found stalling execution ending in API Sleep call 8->105 107 Contains functionality to inject threads in other processes 8->107 109 Contains functionality to compare user and computer (likely to detect sandboxes) 8->109 17 svchost.exe 8->17         started        61 www.abart.pl 12->61 69 183 other IPs or domains 12->69 37 C:\Users\user\pigalicapi.exe, PE32 12->37 dropped 39 C:\Users\...\pigalicapi.exe:Zone.Identifier, ASCII 12->39 dropped 111 Drops PE files to the user root directory 12->111 113 Contains functionality to inject code into remote processes 12->113 115 Writes to foreign memory regions 12->115 21 svchost.exe 12->21         started        23 svchost.exe 12->23         started        63 www.sjbs.org 15->63 65 sidepath.com 15->65 71 154 other IPs or domains 15->71 117 Injects a PE file into a foreign processes 15->117 25 svchost.exe 15->25         started        file6 119 Tries to resolve many domain names, but no domain seems valid 61->119 121 System process connects to network (likely due to code injection or exploit) 65->121 signatures7 process8 dnsIp9 41 smtp.mail.global.gm0.yahoodns.net 17->41 43 smtp.mail.yahoo.com 17->43 45 gmail-smtp-in.l.google.com 17->45 87 Injects a PE file into a foreign processes 17->87 27 svchost.exe 12 17->27         started        31 svchost.exe 17->31         started        33 svchost.exe 17->33         started        35 svchost.exe 17->35         started        47 smtp.mail.global.gm0.yahoodns.net 25->47 49 smtp.mail.yahoo.com 25->49 51 smtp.live.com 25->51 89 System process connects to network (likely due to code injection or exploit) 25->89 signatures10 process11 dnsIp12 79 94 other IPs or domains 27->79 123 System process connects to network (likely due to code injection or exploit) 27->123 81 89 other IPs or domains 31->81 73 oaith.ca 33->73 83 122 other IPs or domains 33->83 75 www.vexcom.com 35->75 77 www.abdg.com 35->77 85 249 other IPs or domains 35->85 signatures13 125 Tries to resolve many domain names, but no domain seems valid 75->125
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f8ef3e3b18e72eebb4b18edbc90f7f5851ab0af044473fa2856fc974f0c33d6c/
Threat name:
Win32.Trojan.Cutwail
Create hunting rule
Status:
Malicious
First seen:
2023-05-31 11:59:33 UTC
File Type:
PE (Exe)
Extracted files:
5
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=7dxt4oyy44xoxnfrr3n4sd37lbi2wcxqirdt7iufn7exj4gdhvwa._file
Verdict:
malicious
Similar samples:
6618359d4d19997728359453b0598be7562c293ef9d6ac51f2635586096a52bd
Cutwail
b1a705cc5dadd4aece01bedec08657b96398d09e610d99cd14f0896825d70d09
Cutwail
d50570c1b4d064fb1f6e855d0c27ac1958a7a32c3cef5e6373094d82647f5bd4
Cutwail
Result
Malware family:
n/a
Score:
  8/10
Tags:
dave persistence upx
Link:
https://tria.ge/reports/230531-pwq79afc7s/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
UPX packed file
Dave packer
Unpacked files
SH256 hash:
fdc68ffd0e5cb3f319eddf083c7e5774ed74a4f86acf212e35ff0dc4f4e91a3c
MD5 hash:
8b3b037e6ba76e4aae95355902278a63
SHA1 hash:
ae607d9392f93b035363f57b90719f058cd69a0a
Detections:
win_pushdo_auto
Create hunting rule
Link:
https://www.unpac.me/results/011a7ab2-72b3-4f3a-a8ae-90ba66323bbf/
Parent samples :
b392f2d4ca451b9b125219b6b4f17d491b76e5dc464cfe47f4963ba356db961f
c0183ded48b43c6bebca6093caf1d8d5a85f7c651aeb6caf86e55819d14238ba
b1a705cc5dadd4aece01bedec08657b96398d09e610d99cd14f0896825d70d09
6618359d4d19997728359453b0598be7562c293ef9d6ac51f2635586096a52bd
987204ca82337f0a3f28097a5d66d5f3ecb11d43d82f67cd753d0bf2ce40b7a7
f8ef3e3b18e72eebb4b18edbc90f7f5851ab0af044473fa2856fc974f0c33d6c
7c2906c9277e39c2d1be87adbd342e6faba7b0aa593233663d0007cb4119ccc6
SH256 hash:
f812cff25ac78391ad0621231aa8556d459a3cea3205a04b097744f1e0116a60
MD5 hash:
ab0fa68fdf4a67b3a404250f073e15ba
SHA1 hash:
7eb499acfbe7a3d4d536ab2de8e95be4d7234bbf
Link:
https://www.unpac.me/results/011a7ab2-72b3-4f3a-a8ae-90ba66323bbf/
SH256 hash:
81231955962ef47f49f4ae3e05bb43016a0528b36778f856ff1ffda02585d639
MD5 hash:
d0e9bd36fe5e8d572b0c01592a4261f9
SHA1 hash:
1a382429ac0274a4d2184b3158ed554da214509d
Detections:
win_pushdo_auto
Create hunting rule
Link:
https://www.unpac.me/results/011a7ab2-72b3-4f3a-a8ae-90ba66323bbf/
SH256 hash:
f8ef3e3b18e72eebb4b18edbc90f7f5851ab0af044473fa2856fc974f0c33d6c
MD5 hash:
6bb40ed95f770955ea7cf27e4785612e
SHA1 hash:
db93260f6bdeb2321fd73019af3d6182c97fd2c5
Link:
https://www.unpac.me/results/011a7ab2-72b3-4f3a-a8ae-90ba66323bbf/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f8ef3e3b18e7/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Cutwail
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/f8ef3e3b18e72eebb4b18edbc90f7f5851ab0af044473fa2856fc974f0c33d6c

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_peb_parsing
Create hunting rule
Author:Willi Ballenthin
Rule name:win_pushdo_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.pushdo.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Cutwail

Executable exe f8ef3e3b18e72eebb4b18edbc90f7f5851ab0af044473fa2856fc974f0c33d6c

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2647496/
Cape
Cape
https://www.capesandbox.com/analysis/394098/

Comments


Avatar
zbet commented on 2023-05-31 12:40:05 UTC

url : hxxp://h169212.srv22.test-hf.su/141.exe