MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3dafcb39d7cc251c9a8212a8e745e0d72f2c530bf699a9168a379fa25e36ec38. 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


Formbook


Vendor detections: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3dafcb39d7cc251c9a8212a8e745e0d72f2c530bf699a9168a379fa25e36ec38
SHA3-384 hash: f7e5139be374d8cf07d5ebece120eaedc49d6cfa41e6e1c1d6d48207b16a0b0a156a8c0de7883949e466d640881519e2
SHA1 hash: 9943026649061e28fe7fd626b6d3e1c893131779
MD5 hash: a30b50f5e2ea1a2d8c6bdf581e97d478
humanhash: fanta-earth-minnesota-eighteen
File name:RFQ_Beijing Chengruisi Manufacturing_pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:427'008 bytes
First seen:2021-09-24 11:54:23 UTC
Last seen:2021-09-24 13:21:25 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 6144:5zytfGHfc2Z6F+/cwIU7oFj7iRdsKK9HvetcVfUgITiyy7pgwbLkIa96R4:gGE2cFmcjOR69HvMc+WL/kaR
TLSH T1F494E041A7ECCE9FE329AA716D016D108663C3DD61D2DA0AED9944763DE624CFB10EC3
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
225
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
RFQ_Beijing Chengruisi Manufacturing_pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-09-24 11:58:38 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/dbe03e74-7ad8-4462-ac48-587331348397

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/191154/
Detection(s):
SecuriteInfo.com.Trojan.MSIL.Noon.lc.20340.25954.UNOFFICIAL
Create hunting rule

Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7236106d-c1e2-4aeb-b17c-d15687290164
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/857335
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 489766 Sample: RFQ_Beijing Chengruisi Manu... Startdate: 24/09/2021 Architecture: WINDOWS Score: 100 33 www.heser.net 2->33 35 ghs.googlehosted.com 2->35 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 10 other signatures 2->49 11 RFQ_Beijing Chengruisi Manufacturing_pdf.exe 3 2->11         started        signatures3 process4 file5 31 RFQ_Beijing Chengr...cturing_pdf.exe.log, ASCII 11->31 dropped 61 Injects a PE file into a foreign processes 11->61 15 RFQ_Beijing Chengruisi Manufacturing_pdf.exe 11->15         started        18 RFQ_Beijing Chengruisi Manufacturing_pdf.exe 11->18         started        signatures6 process7 signatures8 63 Modifies the context of a thread in another process (thread injection) 15->63 65 Maps a DLL or memory area into another process 15->65 67 Sample uses process hollowing technique 15->67 69 Queues an APC in another process (thread injection) 15->69 20 explorer.exe 15->20 injected process9 dnsIp10 37 www.abcrefreshments.com 74.206.228.78, 49822, 80 WEBAIR-INTERNETUS United States 20->37 39 consultantadvisors.com 50.87.248.44, 49820, 80 UNIFIEDLAYER-AS-1US United States 20->39 41 6 other IPs or domains 20->41 51 System process connects to network (likely due to code injection or exploit) 20->51 24 help.exe 20->24         started        signatures11 process12 signatures13 53 Self deletion via cmd delete 24->53 55 Modifies the context of a thread in another process (thread injection) 24->55 57 Maps a DLL or memory area into another process 24->57 59 Tries to detect virtualization through RDTSC time measurements 24->59 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/3dafcb39d7cc251c9a8212a8e745e0d72f2c530bf699a9168a379fa25e36ec38/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-09-24 09:02:17 UTC
AV detection:
26 of 45 (57.78%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hwx4wooxzqsrzgucckuoorpa24xsyuyl62m2sfukg6p2exrw5q4a._file
Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:euzn loader rat suricata
Link:
https://tria.ge/reports/210924-n3grqaghcj/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.heser.net/euzn/
Unpacked files
SH256 hash:
e86f8321145d76c1d4dea6b6078bd199bc465aa1a1350667a2a622ebd5c09573
MD5 hash:
87fe8cd2bd5e5743c2206ac8eb983678
SHA1 hash:
205e2e983ffc60f77f80687c332d26a7d96b442a
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/0ab1538a-ba4c-46df-a3c0-77bf9e86f33e/
Parent samples :
a0d1e3fbe11fcbbea9dcad1880e23ea531c01c20fbbf383174cd420349657a01
a243b394a1a3377b3ae936e6ea896588cca8cc43f8b961bdecbbe324e28c283c
662ae2a76488e0f775884f0c19daa286c910f2e72acb414a5f820b655ef42565
3dafcb39d7cc251c9a8212a8e745e0d72f2c530bf699a9168a379fa25e36ec38
7b5de7135bd7e3c2eb98a94977c138597d357def8a9851a8df3ee442f83ec737
6446736e3662120e1fe4c3518bc8e6d14553f6b0b27aaf1fc5676e1f73a50c33
17ed64707506c917be6329e1cbe94548d761d218dc8e2d624eab99565acc055d
9508c04b4c1dd578c8c3b8597a68bb73548b107edcbb37f13909a18d85f78b3a
SH256 hash:
2241e105f4d9d02f898d8395a712a1c61bcae5d5cf5e52dc37cccd9a4cbe7bb1
MD5 hash:
36fa916ea33da29b017dc9b363834024
SHA1 hash:
a75acb3c65f0a012f58a4c00b4d0c9eb7bf38da6
Link:
https://www.unpac.me/results/0ab1538a-ba4c-46df-a3c0-77bf9e86f33e/
SH256 hash:
a0ea93a6aee5acd9b012950ac1caba1875c0a9eb14d2d9456f50e5d2eeefb985
MD5 hash:
656af1bdf5254e225b9bf79d639c45f9
SHA1 hash:
56f409e410b97e976a4be0c613a54d5cca900562
Link:
https://www.unpac.me/results/0ab1538a-ba4c-46df-a3c0-77bf9e86f33e/
SH256 hash:
c175b6e38e2ce6ebc6bfc04c5a57d04d53ca2c759c1e8c4d994c49744468da45
MD5 hash:
8bf7f7ca5b6bfbc6d5c018679930d12f
SHA1 hash:
27630729dd63d3947706c3ce43ae1f0d120e956d
Link:
https://www.unpac.me/results/0ab1538a-ba4c-46df-a3c0-77bf9e86f33e/
SH256 hash:
3dafcb39d7cc251c9a8212a8e745e0d72f2c530bf699a9168a379fa25e36ec38
MD5 hash:
a30b50f5e2ea1a2d8c6bdf581e97d478
SHA1 hash:
9943026649061e28fe7fd626b6d3e1c893131779
Link:
https://www.unpac.me/results/0ab1538a-ba4c-46df-a3c0-77bf9e86f33e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/3dafcb39d7cc251c9a8212a8e745e0d72f2c530bf699a9168a379fa25e36ec38

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:pe_imphash
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Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

Formbook

Executable exe 3dafcb39d7cc251c9a8212a8e745e0d72f2c530bf699a9168a379fa25e36ec38

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/191154/

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