MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b70faaa5b11402b410a7bdf2843687d7254b13d2003960c67b92551305205e8e. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b70faaa5b11402b410a7bdf2843687d7254b13d2003960c67b92551305205e8e
SHA3-384 hash: af7af35d4a9d64a4941528f5c675637f4de70f055c2bc6ad8834e5efe5c2ef29867dfe606d0fad5328aa67020e5bff9d
SHA1 hash: 31be27f9d82878f72d5dc767f2a79a59cd7801c4
MD5 hash: a60d63e3506f2e87c54187b11991f167
humanhash: one-bravo-december-harry
File name:DOC-20221004-56789098765560890.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:480'752 bytes
First seen:2022-10-07 15:53:46 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 6144:cA1WWblHmR/nQyXJpGWEhcTAjvx8/c/9X4mWSDGTdxf8c1Sta+:dRRmQyZpGxh6yv/9oyMVva
Threatray 125 similar samples on MalwareBazaar
TLSH T15FA4277191F16AC5F996CEB29E60E60AFFE70D859A41825FD13439F21273B84C2481FE
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 10808a8c8c8a8010 (77 x Formbook, 51 x AgentTesla, 44 x RemcosRAT)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
284
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/317679/
Detection(s):
SecuriteInfo.com.Trojan.DownloaderNET.345.19920.22406.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Searching for the window
Creating a file
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Reading critical registry keys
Creating a file in the %temp% directory
Unauthorized injection to a recently created process
Searching for synchronization primitives
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
80%
Tags:
obfuscated overlay packed
Link:
https://www.filescan.io/uploads/63404b9cc9e2f34354330f07/reports/96a39369-6a86-4a46-aa43-f3ff876c472a/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/60d941d4-d212-429f-b99c-9ee624fa812e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1085872
Signature
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
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 domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
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)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 718429 Sample: DOC-20221004-56789098765560... Startdate: 07/10/2022 Architecture: WINDOWS Score: 100 31 www.gogojackmin.com 2->31 35 Snort IDS alert for network traffic 2->35 37 Multi AV Scanner detection for domain / URL 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 7 other signatures 2->41 9 DOC-20221004-56789098765560890.exe 1 2->9         started        signatures3 process4 file5 23 C:\...\DOC-20221004-56789098765560890.exe.log, CSV 9->23 dropped 51 Writes to foreign memory regions 9->51 53 Allocates memory in foreign processes 9->53 55 Injects a PE file into a foreign processes 9->55 57 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 9->57 13 RegSvcs.exe 9->13         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 13->59 61 Maps a DLL or memory area into another process 13->61 63 Sample uses process hollowing technique 13->63 65 Queues an APC in another process (thread injection) 13->65 16 explorer.exe 13->16 injected process9 dnsIp10 25 sadaffstone.com 148.251.50.30, 49705, 80 HETZNER-ASDE Germany 16->25 27 www.xn--szlls-yqac.guru 64.225.91.73, 49706, 49707, 49708 DIGITALOCEAN-ASNUS United States 16->27 29 4 other IPs or domains 16->29 33 System process connects to network (likely due to code injection or exploit) 16->33 20 cmd.exe 13 16->20         started        signatures11 process12 signatures13 43 Tries to steal Mail credentials (via file / registry access) 20->43 45 Tries to harvest and steal browser information (history, passwords, etc) 20->45 47 Modifies the context of a thread in another process (thread injection) 20->47 49 Maps a DLL or memory area into another process 20->49
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b70faaa5b11402b410a7bdf2843687d7254b13d2003960c67b92551305205e8e/
Threat name:
Win32.Trojan.Leonem
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Status:
Malicious
First seen:
2022-10-04 14:28:28 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
21 of 25 (84.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=w4h2vjnrcqbliefhxxziinuh24suwe6saa4wbrt3sjkrgbjal2ha._file
Verdict:
malicious
Similar samples:
183c29706c0a2dea564942c2f989e25eec5854a8ced14f7c48579857241aee5b
Formbook
2c4c53968b0844bfdedf92c1d22a10987d8e0817e47602c1bc0be74762d88ce2
Formbook
3aa7626c625be28b83463afd05ea7d530d1f88bda8eec08c457b39ab28d68965
Formbook
3de38766f1cab6abd8dc3927626542554e9b37f91ec16f6341e315a73a0aebf9
Formbook
58bd321dd55e8d0d95a1dc5147329a08c64d91a6567d1ac8b4b7e2f1d5ee8803
Formbook
8df17138366295cb6f3769835319d6c5455a3e3de285404119810f7ace82f913
Formbook
cd9790c56c1985027868b7b9fc65201f36ee52a7413e4edbd89274ad6445f679
Formbook
d50091f2f374614a00ae73f14dabf529e887e1729da0903f59a09739f4c37e8d
Formbook
fa726806b01da98b8a0e7877f226d10af648ff2b11719c3357e5f61d78331bee
Formbook
+ 115 additional samples on MalwareBazaar
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:c1no rat spyware stealer trojan
Link:
https://tria.ge/reports/221007-tb7fyscgg6/
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
Suspicious use of SetThreadContext
Loads dropped DLL
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/d3a9bdc0-74c3-4d0e-b630-b5d16f34440f
Unpacked files
SH256 hash:
6fc6856309fd5f510b133b31e593a7f01f71516b5073381163752552a526821d
MD5 hash:
aa4f89fac6c79bc587eb2a295510ab5e
SHA1 hash:
55f83f9433f69472a1bcde089a322c33638f11fc
Link:
https://www.unpac.me/results/d8690b4f-fd6a-434b-8e74-5f539569cc8a/
SH256 hash:
69c00b11a2ddace984d650cf7a81a0e74238680871fbc1ac530dda642dee7d1f
MD5 hash:
7699d4b048d1af04f46530657926726e
SHA1 hash:
696d2466dcedf5eac6a53483e5d3eb79ce7fe16c
Link:
https://www.unpac.me/results/d8690b4f-fd6a-434b-8e74-5f539569cc8a/
SH256 hash:
b70faaa5b11402b410a7bdf2843687d7254b13d2003960c67b92551305205e8e
MD5 hash:
a60d63e3506f2e87c54187b11991f167
SHA1 hash:
31be27f9d82878f72d5dc767f2a79a59cd7801c4
Link:
https://www.unpac.me/results/d8690b4f-fd6a-434b-8e74-5f539569cc8a/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b70faaa5b114/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/b70faaa5b11402b410a7bdf2843687d7254b13d2003960c67b92551305205e8e

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:pdb_YARAify
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Author:@wowabiy314
Description:PDB
Rule name:pe_imphash
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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

Executable exe b70faaa5b11402b410a7bdf2843687d7254b13d2003960c67b92551305205e8e

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/317679/

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