MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 efee2d455066b0eb187ff041a99316ee1abe6a6d64a7dffb43fb821e9ab4e647. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: efee2d455066b0eb187ff041a99316ee1abe6a6d64a7dffb43fb821e9ab4e647
SHA3-384 hash: 0a06be9b99706e8741442a9edcab334ef711c5424bf4f9be5b8ae11fb32b1a2106499da5c5ea2fdf83a24132ec8efaaf
SHA1 hash: 4daf6dfcef08c64b51c41bc9cf34c54d995f8e05
MD5 hash: 3429ead3537755f255699c5ac50ad627
humanhash: alpha-berlin-fillet-papa
File name:b9XV3SOqWlAMBk2.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:3'926'016 bytes
First seen:2021-02-11 07:56:38 UTC
Last seen:2021-02-11 10:09:09 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'643 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 98304:Q6v/DBFBlDz1EMn0/nuVGccO/aw5z7PBEgFMoDaZyb5oasu6GDgW3VT9cHBHlW5X:Zv/7BlDz1EMn0/nuVGccO/aw5z7PBEgW
Threatray 3'825 similar samples on MalwareBazaar
TLSH 2506A257C284D530E42D13FC2464CCEA526EFEDBA6BBD42C694E7C8AD633B08D81A5D1
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: mail-smail-vm86.hanmail.net
Sending IP: 211.231.106.161
From: purchase <kggear@hanmail.net>
Subject: Demande de production
Attachment: PO_CNF-20210211.cab (contains "b9XV3SOqWlAMBk2.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
105
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b9XV3SOqWlAMBk2.exe
Verdict:
Malicious activity
Analysis date:
2021-02-11 07:59:03 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/d305f2fd-bc26-4690-9f3d-22865c8c0287

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/116687/
Detection(s):
SecuriteInfo.com.Artemis3429EAD35377.6752.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/605443
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Machine Learning detection for dropped file
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Scheduled temp file as task from temp location
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 351758 Sample: b9XV3SOqWlAMBk2.exe Startdate: 11/02/2021 Architecture: WINDOWS Score: 100 41 www.weberbyroble.com 2->41 43 weberbyroble.com 2->43 51 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->51 53 Found malware configuration 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 11 other signatures 2->57 11 b9XV3SOqWlAMBk2.exe 7 2->11         started        signatures3 process4 file5 33 C:\Users\user\AppData\...\jaqNWtHIGfZ.exe, PE32 11->33 dropped 35 C:\Users\...\jaqNWtHIGfZ.exe:Zone.Identifier, ASCII 11->35 dropped 37 C:\Users\user\AppData\Local\...\tmpCC3B.tmp, XML 11->37 dropped 39 C:\Users\user\...\b9XV3SOqWlAMBk2.exe.log, ASCII 11->39 dropped 67 Tries to detect virtualization through RDTSC time measurements 11->67 15 b9XV3SOqWlAMBk2.exe 11->15         started        18 schtasks.exe 1 11->18         started        signatures6 process7 signatures8 69 Modifies the context of a thread in another process (thread injection) 15->69 71 Maps a DLL or memory area into another process 15->71 73 Sample uses process hollowing technique 15->73 75 Queues an APC in another process (thread injection) 15->75 20 explorer.exe 15->20 injected 24 conhost.exe 18->24         started        process9 dnsIp10 45 ribbonredwhiteandblue.com 34.102.136.180, 49759, 49776, 80 GOOGLEUS United States 20->45 47 www.mezokovesd.com 138.197.103.178, 49760, 80 DIGITALOCEAN-ASNUS United States 20->47 49 7 other IPs or domains 20->49 59 System process connects to network (likely due to code injection or exploit) 20->59 26 chkdsk.exe 20->26         started        signatures11 process12 signatures13 61 Modifies the context of a thread in another process (thread injection) 26->61 63 Maps a DLL or memory area into another process 26->63 65 Tries to detect virtualization through RDTSC time measurements 26->65 29 cmd.exe 1 26->29         started        process14 process15 31 conhost.exe 29->31         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/efee2d455066b0eb187ff041a99316ee1abe6a6d64a7dffb43fb821e9ab4e647/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2021-02-11 06:41:34 UTC
AV detection:
19 of 29 (65.52%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=57xc2rkqm2yowgd76ba2teyw5ynl42tnmst5762d7obb5gvu4zdq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
3a04294c74c076d017ac8f59b506f735547d31472f7480cb6652dea5e3a2816c
Formbook
5d23faa05258eb51b196fee00263dc5e4556a37301d312563843a7ac8494ee19
Formbook
7d9db239a664291a5556c35a58dfc031f424dfab9fd78f5b3f3a02851bd0702e
Formbook
805a071c8e38fca4e3602881ff33ac7a2afba65bb61cd7adda873950bf2779cb
Formbook
8df5752017d7f083ddad62b8423ea7109c830dbcdca3fff0ee7aee8d149fdeda
Formbook
94bae4886fe8942d256a84af00ae297e560b1711272c0d7b05d89f98c8067890
Formbook
9ed73237c4de3ed96e8d90f4d94dcbb46bf7c947961e40601852b8bad6c03f52
Formbook
b1e15b9a8dad8e09e6a44215449f0b4f9fb269f6e00a3106a520780e43c2efd8
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ee559d67bcad95fc4e1e6c867908b0b84338472a30d28d34da415c7efbd48f2b
Formbook
fb9ff8cbde506cb2cfdb40e88fe3fd6877a2e9945a71f07c7252647271763e71
Formbook
+ 3'815 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210211-hf4gha57ds/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.merckcbd.com/dei5/
Unpacked files
SH256 hash:
b2499a2af35b550fbe7f541a14ff1225e1202324f351eecf85de6c8e9fc7c27c
MD5 hash:
5e732e4265622675313195dead01047e
SHA1 hash:
359c710a93c2f58cdc2a45de8dd48a6884a70645
Link:
https://www.unpac.me/results/1e172b34-0cf5-48ad-8878-9e1b88a7bf73/
SH256 hash:
efee2d455066b0eb187ff041a99316ee1abe6a6d64a7dffb43fb821e9ab4e647
MD5 hash:
3429ead3537755f255699c5ac50ad627
SHA1 hash:
4daf6dfcef08c64b51c41bc9cf34c54d995f8e05
Link:
https://www.unpac.me/results/1e172b34-0cf5-48ad-8878-9e1b88a7bf73/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/efee2d455066b0eb187ff041a99316ee1abe6a6d64a7dffb43fb821e9ab4e647

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information

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

Malspam

Formbook

cab d53aacd080a2f697aed74b68e73e6c72524fb0ab7635bbeb1bb4416a6a824cbc

Formbook

Executable exe efee2d455066b0eb187ff041a99316ee1abe6a6d64a7dffb43fb821e9ab4e647

(this sample)

  
Dropped by
MD5 ea4fa49c7e3bd6a573bc92854011cdf3
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/116687/
  
Dropped by
SHA256 d53aacd080a2f697aed74b68e73e6c72524fb0ab7635bbeb1bb4416a6a824cbc

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