MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a6251f77e4c34d7007b6ac5b9e76fb2905d90eb74cb3b5da23fc11ac437f44ad. 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: 12


Intelligence 12 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a6251f77e4c34d7007b6ac5b9e76fb2905d90eb74cb3b5da23fc11ac437f44ad
SHA3-384 hash: 9515002a0a5e25c9a3c1f75509e5375166650e45f29a14d4d6fabae610a8eafd97b5a80b6df0c929b82fcb89ac65b12a
SHA1 hash: be3166a203ccbf1ce56ee05420a1972f115d8620
MD5 hash: bd50419823213f1f7b3a8e74b051b379
humanhash: washington-london-william-quiet
File name:Quotation.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:617'585 bytes
First seen:2022-12-11 15:17:37 UTC
Last seen:2022-12-12 08:45:39 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash ab6770b0a8635b9d92a5838920cfe770 (84 x Formbook, 30 x AgentTesla, 15 x Loki)
ssdeep 12288:g4LZz32DiC3u6zioxdrRNd4vHbQeKQMgH7+Wp1bILwwyx:g4lot3u6zxbGRT118Gx
TLSH T1F1D42312B6A194FAF17258798E3FE3E3E73EAA654F45464277A04E2F6C4E0D0653C40E
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter Anonymous
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
192
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/345216/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a window
Creating a file in the %AppData% subdirectories
Сreating synchronization primitives
Searching for synchronization primitives
Launching a process
DNS request
Sending an HTTP GET request
Reading critical registry keys
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook overlay packed remcos shell32.dll
Link:
https://www.filescan.io/uploads/6395f4ab9a505ad9423ef904/reports/7b30ba84-4d3f-4428-b1ba-6fa401a27d84/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:
LockBit Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/533c7f7a-5d52-4c3d-86d7-7386565e77ef
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1132249
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Initial sample is a PE file and has a suspicious name
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 764973 Sample: Quotation.exe Startdate: 11/12/2022 Architecture: WINDOWS Score: 100 48 Multi AV Scanner detection for domain / URL 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Antivirus detection for URL or domain 2->52 54 5 other signatures 2->54 9 Quotation.exe 20 2->9         started        process3 file4 28 C:\Users\user\AppData\Local\...\rmuvrasf.exe, PE32 9->28 dropped 30 C:\Users\user\AppData\Local\Temp\nso66D.tmp, COM 9->30 dropped 12 rmuvrasf.exe 1 2 9->12         started        process5 file6 32 C:\Users\user\AppData\...\turnsurauymmns.exe, PE32 12->32 dropped 68 Machine Learning detection for dropped file 12->68 70 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 12->70 72 Maps a DLL or memory area into another process 12->72 16 rmuvrasf.exe 12->16         started        signatures7 process8 signatures9 40 Modifies the context of a thread in another process (thread injection) 16->40 42 Maps a DLL or memory area into another process 16->42 44 Sample uses process hollowing technique 16->44 46 Queues an APC in another process (thread injection) 16->46 19 explorer.exe 16->19 injected process10 dnsIp11 34 www.coloview.website 67.223.117.29, 49706, 49707, 49708 VIMRO-AS15189US United States 19->34 36 www.just-gen-ric.email 91.195.240.94, 49703, 49704, 49705 SEDO-ASDE Germany 19->36 38 3 other IPs or domains 19->38 56 System process connects to network (likely due to code injection or exploit) 19->56 23 wlanext.exe 13 19->23         started        26 turnsurauymmns.exe 19->26         started        signatures12 process13 signatures14 58 Tries to steal Mail credentials (via file / registry access) 23->58 60 Tries to harvest and steal browser information (history, passwords, etc) 23->60 62 Modifies the context of a thread in another process (thread injection) 23->62 64 Maps a DLL or memory area into another process 23->64 66 Machine Learning detection for dropped file 26->66
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a6251f77e4c34d7007b6ac5b9e76fb2905d90eb74cb3b5da23fc11ac437f44ad/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2022-12-05 12:49:43 UTC
File Type:
PE (Exe)
Extracted files:
32
AV detection:
21 of 39 (53.85%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uysr657eyngxab5wvrnz45x3fec5sdvxjsz3lwrd7qi2yq37iswq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:scse persistence rat spyware stealer trojan
Link:
https://tria.ge/reports/221211-spk97sbf9v/
Behaviour
Modifies Internet Explorer settings
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
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/943918cd-8e77-467f-9d06-71da36eed57a
Unpacked files
SH256 hash:
9fac5f748c763326c1af47a5ad077edc3451e323a000c2b6206951362290d453
MD5 hash:
2c245a7494c865b2683650545ca041ed
SHA1 hash:
8a23d5b74c73319c8f40ad596a38fc481de06098
Detections:
XLoader
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/9fd81211-8876-4405-aaa5-9e999d724563/
Parent samples :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 hash:
c44d516f5abb0fcae9f69d3e8ed1009f46a3c797bfbafa42607a30029597d5e5
MD5 hash:
6cc581cf80bddf38bdc89c345071ed3e
SHA1 hash:
338c32099aafbec5497fa13b89c6cde53a5249c1
Link:
https://www.unpac.me/results/9fd81211-8876-4405-aaa5-9e999d724563/
SH256 hash:
e439f02b72a882498d512689f380e1323c4d8342578fe8608e81061cf4a8aee1
MD5 hash:
3d90ab79b9719aded136b7cd437ebb21
SHA1 hash:
dbec6e868a293cb0bd58d35191b1423ab8942384
Link:
https://www.unpac.me/results/9fd81211-8876-4405-aaa5-9e999d724563/
Parent samples :
90e38d684c63fee4e5d7bdd16c4409022bf9edfc7cf266b9e49936962ce37b03
24fca3cd8aad055b2284fdf5c0cd73642b88bb19de7c3137361e46529da5b67f
8a2edeef9978d454882bfb233d9cd77505618b854f7899b27aeb095ff8ebb3f4
cc7cb2ebb12103aea621ec7962819aced4680b4322bc213a9257b36c8f2dab3e
cfa0a176bad0046bd498a5a7f5140ca92734b096c541a54acd1b002f228ec47c
22f34cc0b56ea1709b3af15b41b43fc40fca2b77debb8400108d3f517ee2ed4a
607e8a91c76f444784c2cbc1090cf8724d882d9861641a1f6e0de6b2b9401859
2de4a8c16d3643a3c58c63f4e7df2836919316635c05718dac1e474b6eb7fe29
ec61895ef8af01ff00970e46f7ba98c24bf9079d71e09d3c18576f1a9efc93c2
c1955052a26634f3571423dc64d3fd10c55fdb27f29eb3afd292787693ffcf91
4d4f7a1cb34d5309e1c82e7110209c974a08b3e82eaaf7799d7d9a3a176132ca
48860a4eb801109046a591d18809b1ff3e2b658f2a09c6fb36c4948cb88eb939
08ec22dd1d931a9d4194d5e46bc42914e62227c11e9fedce2175fe6a53eb4f92
6bef7c9809b35c7a2111872544e68aa29b8323f5936b6b1122c5f4138cf6e1e8
7e18e5fe9e980c48ad67cc2ce7423e818e15c1256e2ffe4ce85c5cfbd5b30877
5dbc3e721cd340dd80bfa7d0127d920f5f2630aa4b3b3ecfb8d2af9f28f0e208
4fe8bbc88d7a8cc0eec24bd74951f1f00b5127e3899ae53de8dabd6ff417e6db
6b6676267c70fbeb3257f0bb9bce1587f0bdec621238eb32dd9f84b2bcd7e3ea
1ffa8b06cb779360f8c42ccd4527ae3076d25d11b3a90976f04ea430173e9b85
e92f111b8aa01289f72c66585219861e0117c9939de56741cbb234fee55536fe
b69687c4b9aa0c1599840ea90562d3833367e8095addfc725fc2b52fad6ee565
SH256 hash:
a6251f77e4c34d7007b6ac5b9e76fb2905d90eb74cb3b5da23fc11ac437f44ad
MD5 hash:
bd50419823213f1f7b3a8e74b051b379
SHA1 hash:
be3166a203ccbf1ce56ee05420a1972f115d8620
Link:
https://www.unpac.me/results/9fd81211-8876-4405-aaa5-9e999d724563/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a6251f77e4c3/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.88
Link:
https://yomi.yoroi.company/submissions/a6251f77e4c34d7007b6ac5b9e76fb2905d90eb74cb3b5da23fc11ac437f44ad

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_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Malspam

Formbook

Executable exe a6251f77e4c34d7007b6ac5b9e76fb2905d90eb74cb3b5da23fc11ac437f44ad

(this sample)

  
Dropped by
Formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/345216/

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