MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1a7f0d9842f11511d2b604c123882d5b998afc6d51cb958546eff332a86e5f0a. 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: 20


Intelligence 20 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1a7f0d9842f11511d2b604c123882d5b998afc6d51cb958546eff332a86e5f0a
SHA3-384 hash: 14eb8c2f7795b20be960de1db35513afd74bc752ee92b69ba5ae0c3797bdf102aae6ddfb901674cd33a346ae0fed766d
SHA1 hash: a5442cb1545d0c7a79ac5f1ce8f246b4f3ec793c
MD5 hash: bdbef8c8f7417529ef94a19c3ebeeb7a
humanhash: five-london-arizona-xray
File name:ekstre.pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:619'008 bytes
First seen:2025-05-30 07:29:13 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'655 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 12288:kgDB6yzNAEiZPzyEno5+7cNhfJIK/YfWWFqsiYIFu/TXD:kWW9ZGEoA+hBL/6QY0u
TLSH T153D412196A66DB03D8E51BF20232D6B423B42ECEE412D75B4FEA2DD779237201761393
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
dhash icon 8271f0d4d4e87192 (10 x Formbook, 9 x SnakeKeylogger, 9 x MassLogger)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
408
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
ekstre.pdf.exe
Verdict:
Malicious activity
Analysis date:
2025-05-30 07:43:33 UTC
Tags:
formbook stealer netreactor xloader
Link:
https://app.any.run/tasks/d888a44e-0ffc-4360-be71-446f0dfd19e3

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/6283/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3223.25848.18020.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68396138acf88f5815e8e4bd
Tags:
agenttesla underscore
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/68395e58fd02ed5e058fea3e/reports/f9440388-cea5-4fb9-9e09-49639a48d57b/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/1a7f0d9842f11511d2b604c123882d5b998afc6d51cb958546eff332a86e5f0a
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/8f48d08d-52ba-412c-8146-d56e4a87ab34
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1702080
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Suspicious Double Extension File Execution
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Uses an obfuscated file name to hide its real file extension (double extension)
Uses netsh to modify the Windows network and firewall settings
Uses threadpools to delay analysis
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1702080 Sample: ekstre.pdf.exe Startdate: 30/05/2025 Architecture: WINDOWS Score: 100 38 www.mdgmgmdfm.xyz 2->38 40 www.z9m17.cfd 2->40 42 11 other IPs or domains 2->42 44 Suricata IDS alerts for network traffic 2->44 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 52 10 other signatures 2->52 11 ekstre.pdf.exe 4 2->11         started        signatures3 50 Performs DNS queries to domains with low reputation 38->50 process4 file5 36 C:\Users\user\AppData\...\ekstre.pdf.exe.log, ASCII 11->36 dropped 64 Adds a directory exclusion to Windows Defender 11->64 66 Tries to detect virtualization through RDTSC time measurements 11->66 68 Injects a PE file into a foreign processes 11->68 70 2 other signatures 11->70 15 ekstre.pdf.exe 11->15         started        18 powershell.exe 23 11->18         started        signatures6 process7 signatures8 72 Modifies the context of a thread in another process (thread injection) 15->72 74 Maps a DLL or memory area into another process 15->74 76 Sample uses process hollowing technique 15->76 80 2 other signatures 15->80 20 explorer.exe 66 1 15->20 injected 78 Loading BitLocker PowerShell Module 18->78 23 WmiPrvSE.exe 18->23         started        25 conhost.exe 18->25         started        process9 signatures10 54 Uses netsh to modify the Windows network and firewall settings 20->54 27 netsh.exe 20->27         started        30 autochk.exe 20->30         started        process11 signatures12 56 Modifies the context of a thread in another process (thread injection) 27->56 58 Maps a DLL or memory area into another process 27->58 60 Tries to detect virtualization through RDTSC time measurements 27->60 62 Switches to a custom stack to bypass stack traces 27->62 32 cmd.exe 1 27->32         started        process13 process14 34 conhost.exe 32->34         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/1a7f0d9842f11511d2b604c123882d5b998afc6d51cb958546eff332a86e5f0a
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1a7f0d9842f11511d2b604c123882d5b998afc6d51cb958546eff332a86e5f0a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2025-05-29 13:33:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=dj7q3gcc6ekrduvwatashcbnlomyv7dnkhfzlbkg57ztfkdol4fa._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
formbook
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:s01s discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250530-jb1cjafl8x/
Behaviour
Modifies registry class
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
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/804f0dc7-5524-4a0f-86fb-7e00466e8fc5
Unpacked files
SH256 hash:
1a7f0d9842f11511d2b604c123882d5b998afc6d51cb958546eff332a86e5f0a
MD5 hash:
bdbef8c8f7417529ef94a19c3ebeeb7a
SHA1 hash:
a5442cb1545d0c7a79ac5f1ce8f246b4f3ec793c
Link:
https://www.unpac.me/results/3912d34a-6e61-4344-b7a9-3f6ce370ecc2/
SH256 hash:
ff55838cf83322ceab30a512da916f2821181007e95c8fa68674825df8c819b4
MD5 hash:
c9d09ec2449e60042cfc5222e0905ac9
SHA1 hash:
00f21d00230d6595f91ea5c990910f86bbfa44b1
Link:
https://www.unpac.me/results/3912d34a-6e61-4344-b7a9-3f6ce370ecc2/
SH256 hash:
067fbd789d86c9bc72a9f22665e656b45b562f9e8f13dab206779bdb860b61d8
MD5 hash:
aec2c99392339b4814b5b5a9b76ef629
SHA1 hash:
bcd2a85ff119cae064b1fbba003c4de4cea00c76
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/3912d34a-6e61-4344-b7a9-3f6ce370ecc2/
SH256 hash:
44844888cd172e71a184e40bd12fa2d2a5089b2c6de1189ed8adc88f9fed6c20
MD5 hash:
194ef4ab803af02141f1ffa85c91e7ea
SHA1 hash:
514c84994c895b810905687ceadc1c787c64b2ad
Detections:
win_formbook_w0
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Windows_Trojan_Formbook
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/3912d34a-6e61-4344-b7a9-3f6ce370ecc2/
Parent samples :
1a7f0d9842f11511d2b604c123882d5b998afc6d51cb958546eff332a86e5f0a
44364cc9748a4faccf19645db786945831fec60aae58f10dfb002ab439479f1b
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/1a7f0d9842f1/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/1a7f0d9842f11511d2b604c123882d5b998afc6d51cb958546eff332a86e5f0a

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Malspam

Formbook

Executable exe 1a7f0d9842f11511d2b604c123882d5b998afc6d51cb958546eff332a86e5f0a

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/6283/

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