MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a38cf104fcc3366e6bcd8c6f947b0c6fe7ee30728a2e72b45e96e9b4b0dac384. 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: 18


Intelligence 18 IOCs YARA 19 File information Comments
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SHA256 hash: a38cf104fcc3366e6bcd8c6f947b0c6fe7ee30728a2e72b45e96e9b4b0dac384
SHA3-384 hash: 4a9488df1256f446919853d079c7de7c0821ed88a667edfb0b01a384da337b78b4f01ab4f34cbf2636e4cde7b4defde8
SHA1 hash: 7a59a84aa5fd6b0dd9aeca7bcc8aa149d2b6ba91
MD5 hash: 5dc9185191d639c955367a880101e252
humanhash: rugby-sixteen-cold-red
File name:5dc9185191d639c955367a880101e252.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:388'874 bytes
First seen:2023-10-17 10:52:55 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f4639a0b3116c2cfc71144b88a929cfd (96 x GuLoader, 53 x Formbook, 37 x VIPKeylogger)
ssdeep 6144:KfL+oq2XMMNBWX5b8rsUclvLNlhsTuXTN+Cfl0mF4Bct6cZ5JPVMyd47LGDaDY8f:KfLRrNBWJgEltsTuDN+Y5+Baj9VPd4WS
Threatray 86 similar samples on MalwareBazaar
TLSH T10A842343F8E0CC27DAB613722A73A3BF1EB1EA2D2184594B17707E5B3522293691F355
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 78f9b898b8c2c940 (16 x Formbook, 15 x AgentTesla, 2 x AveMariaRAT)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
317
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Order List.doc
Verdict:
Malicious activity
Analysis date:
2023-10-16 20:07:24 UTC
Tags:
exploit cve-2017-11882 loader formbook xloader stealer spyware
Link:
https://app.any.run/tasks/c5e5480f-e5fb-4a64-b876-ea6fc7f3ef7a

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/455286/
Detection(s):
SecuriteInfo.com.Trojan.Siggen21.43384.8574.12152.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Searching for the window
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Unauthorized injection to a browser process
Gathering data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control installer lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/652e6790c51de9263e5b76f9/reports/2e7d3008-78ea-4701-94f7-cbacf7a1dc9b/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/a38cf104fcc3366e6bcd8c6f947b0c6fe7ee30728a2e72b45e96e9b4b0dac384
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.
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/db581dde-65db-4667-b269-75dbd18b8f8b
Result
Threat name:
FormBook, NSISDropper
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1327201
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Machine Learning detection for dropped file
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
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Yara detected FormBook
Yara detected NSISDropper
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1327201 Sample: 9OXb5VhqNL.exe Startdate: 17/10/2023 Architecture: WINDOWS Score: 100 36 www.xiausu.com 2->36 38 www.verificardsa.com 2->38 40 12 other IPs or domains 2->40 56 Snort IDS alert for network traffic 2->56 58 Found malware configuration 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 6 other signatures 2->62 12 9OXb5VhqNL.exe 17 2->12         started        signatures3 process4 file5 34 C:\Users\user\AppData\Local\Temp\dcundy.exe, PE32 12->34 dropped 15 dcundy.exe 1 12->15         started        process6 signatures7 74 Multi AV Scanner detection for dropped file 15->74 76 Detected unpacking (changes PE section rights) 15->76 78 Machine Learning detection for dropped file 15->78 80 3 other signatures 15->80 18 dcundy.exe 15->18         started        21 conhost.exe 15->21         started        process8 signatures9 48 Modifies the context of a thread in another process (thread injection) 18->48 50 Maps a DLL or memory area into another process 18->50 52 Sample uses process hollowing technique 18->52 54 Queues an APC in another process (thread injection) 18->54 23 explorer.exe 38 1 18->23 injected process10 dnsIp11 42 www.ssongg13026.cfd 101.32.68.183, 49719, 80 TENCENT-NET-AP-CNTencentBuildingKejizhongyiAvenueCN China 23->42 44 www.iuhew1.cfd 154.195.80.66, 49720, 80 PEGTECHINCUS Seychelles 23->44 46 4 other IPs or domains 23->46 64 System process connects to network (likely due to code injection or exploit) 23->64 66 Uses netsh to modify the Windows network and firewall settings 23->66 27 netsh.exe 23->27         started        signatures12 process13 signatures14 68 Modifies the context of a thread in another process (thread injection) 27->68 70 Maps a DLL or memory area into another process 27->70 72 Tries to detect virtualization through RDTSC time measurements 27->72 30 cmd.exe 1 27->30         started        process15 process16 32 conhost.exe 30->32         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a38cf104fcc3366e6bcd8c6f947b0c6fe7ee30728a2e72b45e96e9b4b0dac384
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a38cf104fcc3366e6bcd8c6f947b0c6fe7ee30728a2e72b45e96e9b4b0dac384/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2023-10-16 19:07:38 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
18 of 22 (81.82%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uogpcbh4ym3g426nrrxzi6ymn7t64mdsrixhfnc6s3u3jmg2yoca._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
197619791b979892a3f7a7cabb4314b10b360c67442a2b4f101cef42f6b0f412
Formbook
393f41d6aaa447a3fc89f83b3ffb08574464197bf45704ba8226cd070b63c6ed
Formbook
5d87e85a0cf1334149526ca4df8e39bd40d8699c56c30a616ef3a2edd1946520
Formbook
7475dc716905ee9a57aa78bdb02c71c1d22d93c67326ac2eedb0b72ca82207b0
Formbook
b88b53db5c1fd0779cb7718630d7ac90f0ff81cfc7e8495bff1325743adeff65
Formbook
bbcaa127862b5b70b5a833b3136f431c03a9165dd0a4646ba78922ebcc7ebdc3
Formbook
c1aa65f7c2cc6beb7052c8ada46a3139fc01da66890f4153a7c5761292b71d61
Formbook
+ 76 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:t6tg rat spyware stealer trojan
Link:
https://tria.ge/reports/231017-myz7tsbc7y/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Formbook payload
Formbook
Unpacked files
SH256 hash:
9352df1cc2090a8934e296af6a0408942c8e70c1bca3533a5589fdf51a221d9a
MD5 hash:
f12f023cd45c1841cff55afc3216b682
SHA1 hash:
26d8f501debea549d892f6d6cd15610fb7239b9c
Detections:
FormBook
Create hunting rule
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/6cda8e75-504d-4133-8e21-abcea25bafea/
Parent samples :
a38cf104fcc3366e6bcd8c6f947b0c6fe7ee30728a2e72b45e96e9b4b0dac384
d0cbf22d6b18d9544e3c1488b363c099a29b698205bcca18a7eb1ae1c92d4343
7fb8142113f69c8ad84a242ce0c6f17125baa756a6a43549d466ea26dbed7709
SH256 hash:
6f78c405af266c426641dc34318e1d552f34a9b760060019b9b3a8875a383cac
MD5 hash:
76e82346e4ad464e1bf90304780dfb5b
SHA1 hash:
dd99eab9a9461a4d3a75256355f84879deafa0ab
Link:
https://www.unpac.me/results/6cda8e75-504d-4133-8e21-abcea25bafea/
SH256 hash:
a38cf104fcc3366e6bcd8c6f947b0c6fe7ee30728a2e72b45e96e9b4b0dac384
MD5 hash:
5dc9185191d639c955367a880101e252
SHA1 hash:
7a59a84aa5fd6b0dd9aeca7bcc8aa149d2b6ba91
Link:
https://www.unpac.me/results/6cda8e75-504d-4133-8e21-abcea25bafea/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a38cf104fcc3/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/a38cf104fcc3366e6bcd8c6f947b0c6fe7ee30728a2e72b45e96e9b4b0dac384

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:Check_OutputDebugStringA_iat
Create hunting rule
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_no_import_table
Create hunting rule
Author:qux
Description:Detects exe does not have import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
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.
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Web download

Formbook

Executable exe a38cf104fcc3366e6bcd8c6f947b0c6fe7ee30728a2e72b45e96e9b4b0dac384

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2721147/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/455286/

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