MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4d5b93e0fcadfdffbaa261a8992cf3c5f9d5f4f49cebe85963b09d2bbaa225c. 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: 16


Intelligence 16 IOCs YARA 2 File information Comments
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SHA256 hash: b4d5b93e0fcadfdffbaa261a8992cf3c5f9d5f4f49cebe85963b09d2bbaa225c
SHA3-384 hash: 099631a94e2093d84c0fb925ab0db2c977c86328433222ed6e8a83135b694d3803be9f2da705b401e46ebd4bfb74330c
SHA1 hash: 8406c1090ae2f37cc2fb7f498849df27f5b5dcd7
MD5 hash: c2ad77cf883b86aa8cde5e4c846e0c5f
humanhash: cat-maryland-jupiter-bluebird
File name:doc545665-0988976-099876.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:530'432 bytes
First seen:2022-01-06 06:55:48 UTC
Last seen:2022-01-07 14:40:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'470 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:71IUOnI6UkXZAYOU3LDeFIk/n8Tgj3TPDsjGW:71aIaXZAYOU7iV/Eg3Dsjf
Threatray 12'615 similar samples on MalwareBazaar
TLSH T1F6B4DF6133A88F44D6797BF51461844057B67E1A2822C20DAEF631CE2E72F93CE16B5F
File icon (PE):PE icon
dhash icon 5a7a7c2f2b9b4f01 (3 x AgentTesla, 2 x Loki, 1 x Formbook)
Reporter cocaman
Tags:exe FormBook INVOICE

Intelligence

File Origin
# of uploads :
4
# of downloads :
168
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
doc545665-0988976-099876.exe
Verdict:
Malicious activity
Analysis date:
2022-01-06 07:01:13 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/0cd06ad9-4aa0-4f8e-8b56-e02a9278076e

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/217500/
Detection(s):
SecuriteInfo.com.Trojan.Siggen16.26567.7525.2474.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware obfuscated packed
Link:
https://www.filescan.io/uploads/61d69287135d97804c0ecd3e/reports/b3900695-bd90-4e07-83ea-f80b13816022/overview
Result
Verdict:
MALICIOUS
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:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0fec146e-aa40-4648-b661-91592e1ab588
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/916165
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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 dropped file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicius Add Task From User AppData Temp
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 AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 548643 Sample: doc545665-0988976-099876.exe Startdate: 06/01/2022 Architecture: WINDOWS Score: 100 45 www.meizifang.xyz 2->45 53 Found malware configuration 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 Antivirus detection for URL or domain 2->57 59 10 other signatures 2->59 11 doc545665-0988976-099876.exe 7 2->11         started        signatures3 process4 file5 39 C:\Users\user\AppData\...\xmqgBeQdfHJKK.exe, PE32 11->39 dropped 41 C:\Users\user\AppData\Local\...\tmp3E22.tmp, XML 11->41 dropped 43 C:\Users\...\doc545665-0988976-099876.exe.log, ASCII 11->43 dropped 65 Uses schtasks.exe or at.exe to add and modify task schedules 11->65 67 Adds a directory exclusion to Windows Defender 11->67 69 Tries to detect virtualization through RDTSC time measurements 11->69 15 doc545665-0988976-099876.exe 11->15         started        18 powershell.exe 25 11->18         started        20 schtasks.exe 1 11->20         started        signatures6 process7 signatures8 79 Modifies the context of a thread in another process (thread injection) 15->79 81 Maps a DLL or memory area into another process 15->81 83 Sample uses process hollowing technique 15->83 85 Queues an APC in another process (thread injection) 15->85 22 explorer.exe 15->22 injected 26 conhost.exe 18->26         started        28 conhost.exe 20->28         started        process9 dnsIp10 47 www.shorelineeastbni.com 154.196.11.207, 49802, 80 SKHT-ASShenzhenKatherineHengTechnologyInformationCo Seychelles 22->47 49 clickcuracao.net 64.251.1.115, 49797, 80 INFOLINK-MIA-US United States 22->49 51 6 other IPs or domains 22->51 61 System process connects to network (likely due to code injection or exploit) 22->61 63 Performs DNS queries to domains with low reputation 22->63 30 cmmon32.exe 22->30         started        33 autochk.exe 22->33         started        signatures11 process12 signatures13 71 Self deletion via cmd delete 30->71 73 Modifies the context of a thread in another process (thread injection) 30->73 75 Maps a DLL or memory area into another process 30->75 77 Tries to detect virtualization through RDTSC time measurements 30->77 35 cmd.exe 1 30->35         started        process14 process15 37 conhost.exe 35->37         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b4d5b93e0fcadfdffbaa261a8992cf3c5f9d5f4f49cebe85963b09d2bbaa225c/
Threat name:
ByteCode-MSIL.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2022-01-06 06:56:17 UTC
File Type:
PE (.Net Exe)
Extracted files:
56
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wtk3spqpzlp5765keynitewphrpz2x2pjhhl5bmwhme5fo5kejoa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
36b986f7d277f114be1166140b08a4ddb6300274d6365ea589fe129105445de7
Formbook
6d722da095632d50aa49b4749a4e7db323889aee6fad1ecc2c5dd999e63c645e
Formbook
787179b3dd4ded4008927e4033331b00b60762872da94de5db3e6bf4a3b6e143
Formbook
7f4888239060a411b5a521d19e88bb1158189634f764383c2c2fc0bb84e01169
Formbook
9050768f69225078f05d535401510a5b361dd071430e40639e869c7247621908
Formbook
b2253435b6541cf9dc011670f57efd225192942962a40893b53b71114f38899b
Formbook
d00c073d20fa9d33eb8326798f0853be03a7f13e33bae3ce4c25c44bf25040f4
Formbook
d277fc7f7001598fc7730b3bfec96ce2749f616d64fe20bcd403a599b1bc7c2c
Formbook
deac58296321ec67026dc3de7275137fbdf1775e28fbd9e4d3bf528be7bc95ff
Formbook
f75fa96a8fe88dc2fffd64208705d26fb980db33afff6b872f34e1f9034e0363
Formbook
+ 12'605 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:s6ap loader rat
Link:
https://tria.ge/reports/220106-hqdawabaf7/
Behaviour
Creates scheduled task(s)
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
Unpacked files
SH256 hash:
3c1ba9de0677c2858a31b1c6fb76c62057fafea71b8a9c2ff590dc6b613042bc
MD5 hash:
1b366eb9312ece4f18476025575da330
SHA1 hash:
df395ed641c3c1af1e67ec8988c0784052cd40ac
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/2d6e662c-2140-41aa-943e-8b24e4a62046/
Parent samples :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 hash:
12990fa23d94534fcaa5b4ee18064fdd2d2814111410a55cd1492931dc01f2cc
MD5 hash:
655095c44bb60e396bd23a8860b54649
SHA1 hash:
88f4be7121774855a958bbe29b9167cbc3854590
Link:
https://www.unpac.me/results/2d6e662c-2140-41aa-943e-8b24e4a62046/
SH256 hash:
c88a5a9f1d1f452a735fd128d1b8781315236c21aef60dd3ca6d749e3863d4a0
MD5 hash:
cb5498afeb3287bcc08a84bff8c5e36b
SHA1 hash:
365b9cbdd07197b0d70b6e7b8fe8d7cc74b66be4
Link:
https://www.unpac.me/results/2d6e662c-2140-41aa-943e-8b24e4a62046/
SH256 hash:
b4d5b93e0fcadfdffbaa261a8992cf3c5f9d5f4f49cebe85963b09d2bbaa225c
MD5 hash:
c2ad77cf883b86aa8cde5e4c846e0c5f
SHA1 hash:
8406c1090ae2f37cc2fb7f498849df27f5b5dcd7
Link:
https://www.unpac.me/results/2d6e662c-2140-41aa-943e-8b24e4a62046/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/b4d5b93e0fca/report/overview.html
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/b4d5b93e0fcadfdffbaa261a8992cf3c5f9d5f4f49cebe85963b09d2bbaa225c

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
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
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

r04 ab026fdeca625c8acd514261d0e78af68c39603eaba666662c271bf6a903d75c

Formbook

Executable exe b4d5b93e0fcadfdffbaa261a8992cf3c5f9d5f4f49cebe85963b09d2bbaa225c

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 ab026fdeca625c8acd514261d0e78af68c39603eaba666662c271bf6a903d75c
Cape
Cape
https://www.capesandbox.com/analysis/217500/

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