MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a7b250c97316686083cfa7c3d5c9aa35aeaa2090e4b27a7a2a88ab8986dc6b54. 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 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a7b250c97316686083cfa7c3d5c9aa35aeaa2090e4b27a7a2a88ab8986dc6b54
SHA3-384 hash: c9c537f6951212f4b7cdbf5245e819b57af0a74cdf6587e3ac5f84f40d2e7cc7a54b73a57a30016dc7688c6a57aab9da
SHA1 hash: d7e2017f93ebca6a3db7d977feae01f3353e0658
MD5 hash: 16ca6e2b5cd1f487d951a414f672994e
humanhash: triple-papa-twelve-uncle
File name:Dhl Account Overdue letter.xls.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:867'840 bytes
First seen:2025-12-08 16:58:57 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 21371b611d91188d602926b15db6bd48 (70 x Formbook, 33 x AgentTesla, 20 x RemcosRAT)
ssdeep 12288:pz7hU5I5yuNHIgzSFKxWltRohBfSTso93UjlbSITnd1eLCt6rb0mjljO+Q0De+fR:pf+iN57Gtene3albSI51eLLVljO+fS2
Threatray 2'257 similar samples on MalwareBazaar
TLSH T1F5051259DA90E6C5FCA071F89801B710C2796C85991E59DB0BB87FFECAB42C03F2B159
TrID 39.1% (.EXE) UPX compressed Win32 Executable (27066/9/6)
38.3% (.EXE) Win32 EXE Yoda's Crypter (26569/9/4)
7.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.5% (.EXE) Win32 Executable (generic) (4504/4/1)
2.9% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
Reporter abuse_ch
Tags:DHL exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
103
Origin country :
SE SE
Vendor Threat Intelligence
Malware configuration found for:
AutoIt PEPacker
Details
AutoIt
extracted scripts and files
PEPacker
a UPX version number and an unpacked binary
Link:
https://research.acce.ciphertechsolutions.com/results/6238f4af-41aa-4932-a0b7-1e682a6f59c5/
Malware family:
n/a
ID:
1
File name:
Dhl Account Overdue letter.xls.exe
Verdict:
No threats detected
Analysis date:
2025-12-09 07:03:11 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/82b1826b-b9df-4a82-abf8-fa4380933abe

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/43895/
Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=693703f6881313558a2ba115
Tags:
underscore extens excel
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Launching a process
Сreating synchronization primitives
Sending a custom TCP request
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
autoit compiled-script masquerade microsoft_visual_cc packed packed packed upx
Link:
https://www.filescan.io/uploads/693703e4bc15eab491f75008/reports/238d69b4-83c4-406e-9dc9-be328a272ed1/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/a7b250c97316686083cfa7c3d5c9aa35aeaa2090e4b27a7a2a88ab8986dc6b54
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-12-07T21:02:00Z UTC
Last seen:
2025-12-10T12:52:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/a7b250c97316686083cfa7c3d5c9aa35aeaa2090e4b27a7a2a88ab8986dc6b54/results?tab=lookup
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1829025
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Binary is likely a compiled AutoIt script file
Found API chain indicative of sandbox detection
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 submitted file
Performs DNS queries to domains with low reputation
Sigma detected: Suspicious Double Extension File Execution
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Unusual module load detection (module proxying)
Uses an obfuscated file name to hide its real file extension (double extension)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1829025 Sample: Dhl Account Overdue letter.... Startdate: 08/12/2025 Architecture: WINDOWS Score: 100 35 www.vrinfluencer.xyz 2->35 37 www.cyphercvx.xyz 2->37 39 20 other IPs or domains 2->39 41 Suricata IDS alerts for network traffic 2->41 43 Antivirus detection for URL or domain 2->43 45 Antivirus / Scanner detection for submitted sample 2->45 49 8 other signatures 2->49 11 Dhl Account Overdue letter.xls.exe 4 2->11         started        signatures3 47 Performs DNS queries to domains with low reputation 37->47 process4 signatures5 59 Binary is likely a compiled AutoIt script file 11->59 61 Writes to foreign memory regions 11->61 63 Maps a DLL or memory area into another process 11->63 14 svchost.exe 11->14         started        process6 signatures7 65 Maps a DLL or memory area into another process 14->65 67 Unusual module load detection (module proxying) 14->67 17 ntXFsFa0PA.exe 14->17 injected process8 dnsIp9 29 www.luutra.site 203.161.50.154, 49743, 49744, 49745 VNPT-AS-VNVNPTCorpVN Malaysia 17->29 31 www.myseria.club 103.224.182.242, 49751, 49752, 49753 TRELLIAN-AS-APTrellianPtyLimitedAU Australia 17->31 33 10 other IPs or domains 17->33 20 cscript.exe 13 17->20         started        process10 signatures11 51 Tries to steal Mail credentials (via file / registry access) 20->51 53 Tries to harvest and steal browser information (history, passwords, etc) 20->53 55 Modifies the context of a thread in another process (thread injection) 20->55 57 3 other signatures 20->57 23 chrome.exe 20->23         started        25 firefox.exe 20->25         started        process12 process13 27 WerFault.exe 4 23->27         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a7b250c97316686083cfa7c3d5c9aa35aeaa2090e4b27a7a2a88ab8986dc6b54
Verdict:
Malware
YARA:
5 match(es)
Tags:
AutoIt Decompiled Executable PE (Portable Executable) PE File Layout Suspect Win 32 Exe x86
Link:
https://app.malva.re/file/16ca6e2b5cd1f487d951a414f672994e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a7b250c97316686083cfa7c3d5c9aa35aeaa2090e4b27a7a2a88ab8986dc6b54/
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-12-08 01:02:42 UTC
File Type:
PE (Exe)
Extracted files:
54
AV detection:
31 of 38 (81.58%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=u6zfbsltczugba6pu7b5lsnkgwxkuieq4szhu6rkrcvytbw4nnka._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
44d76c2813cbcbbc38602cf85005884c492f6eb76fbdac3e8279633d75fc5a0d
Formbook
480eba71b028d39614cfb7d3f83e75358348d256f8d27e687a4a85ba7499a1a4
Formbook
4c43b309ba3f6388617f713f68150812c71bf42bbb6de40399082fca221bc336
Formbook
911ab907376843edb05b47e615e37582276cc4af2b676727af7d61831d9fd044
Formbook
d9281de206f0a6ba959317eaf87ab62e6d57d9bed3a31f81308a2fea95f3a42e
Formbook
ea03b1c2d2aa3ec74bf4194c7f623670e13df20b4bfdaae11f2e8604521f77e4
Formbook
fe9da91bd2eda566901cf68e6e7d4ef9a3f755dff630931b1f1085b8a1630950
Formbook
+ 2'247 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery upx
Link:
https://tria.ge/reports/251208-vhha3sfk9v/
Behaviour
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious behavior: MapViewOfSection
Program crash
System Location Discovery: System Language Discovery
AutoIT Executable
Suspicious use of SetThreadContext
UPX packed file
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/41e8bf0c-1ab4-4455-8b0b-f35c8d06ec5c
Unpacked files
SH256 hash:
a7b250c97316686083cfa7c3d5c9aa35aeaa2090e4b27a7a2a88ab8986dc6b54
MD5 hash:
16ca6e2b5cd1f487d951a414f672994e
SHA1 hash:
d7e2017f93ebca6a3db7d977feae01f3353e0658
Link:
https://www.unpac.me/results/7c7f9020-597e-4498-b198-da00b007f2b2/
SH256 hash:
e52919614193b2d8bddb9a7bfb521740a13830ac04876303f47c3abe1c84f516
MD5 hash:
9827d0064efdf41a428eb60d348d19cf
SHA1 hash:
324aeb8d3ed99f1654fb2019e9ad45f8a3d54b5a
Detections:
AutoIT_Compiled
Create hunting rule
Link:
https://www.unpac.me/results/7c7f9020-597e-4498-b198-da00b007f2b2/
SH256 hash:
7bc02e40d267f0806ccbe4ddf692cf7e30e15aea70d7459a62be513ef77c43fa
MD5 hash:
64bb70052b94833bae8c6c2ed8355480
SHA1 hash:
3c5b9df2ff518b5026fa23510781e3d1cd15cd5a
Link:
https://www.unpac.me/results/7c7f9020-597e-4498-b198-da00b007f2b2/
SH256 hash:
10923ea59dd5331d65d4c3c6f3b2affe4fe0a0327df3c318ca00ac14e593f33c
MD5 hash:
b2f4c247b5952aba37ea591d73e90d62
SHA1 hash:
f56579ede6c544ebe589959fc0f9b2476990bb62
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/7c7f9020-597e-4498-b198-da00b007f2b2/
Parent samples :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 family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a7b250c97316/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a7b250c97316686083cfa7c3d5c9aa35aeaa2090e4b27a7a2a88ab8986dc6b54

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:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
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:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no 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:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:TH_Win_ETW_Bypass_2025_CYFARE
Create hunting rule
Author:CYFARE
Description:Windows ETW Bypass Detection Rule - 2025
Reference:https://cyfare.net/
Rule name:UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser
Create hunting rule
Author:malware-lu
Rule name:upx_largefile
Create hunting rule
Author:k3nr9

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/43895/

Comments