MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 397c02a073aa646aeb721f52abd8b3c912716e24cf34efea12a52016cb7bd471. 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: 13


Intelligence 13 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 397c02a073aa646aeb721f52abd8b3c912716e24cf34efea12a52016cb7bd471
SHA3-384 hash: 7a1011277e3f60f0126dedd3945e005bc4df1c44dc0ec8db1d2b85da51212309099144f070be0a916da8176277c1272b
SHA1 hash: 1520c13bf1b940e1a81995d0ab77e1e47de59515
MD5 hash: d5ec97d61eb6c1ac66619a72324685f5
humanhash: december-texas-sweet-mountain
File name:d5ec97d61eb6c1ac66619a72324685f5.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'509'340 bytes
First seen:2026-03-18 09:35:18 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b34f154ec913d2d2c435cbd644e91687 (557 x GuLoader, 120 x RemcosRAT, 82 x EpsilonStealer)
ssdeep 24576:k2oWLv/1/CL6rrjpPwmiihu4q/hANoqgPU1LmL6bwC5+UmYAiZI/BK2AQ:uWLvFCiWzLmNozebwI2AQ
TLSH T1FF6533659FE5F59BC9A4C07A465E89A5CBBF1D303B61272F12C03DEF8812D508E87B12
TrID 50.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
10.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
10.5% (.EXE) Win64 Executable (generic) (6522/11/2)
8.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.2% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter abuse_ch
Tags:DHL exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
162
Origin country :
SE SE
Vendor Threat Intelligence
Malware configuration found for:
GuLoader NSIS
Details
GuLoader
a c2 URL, a useragent string, and a string XOR key
GuLoader
an XOR decryption key and an extracted component
NSIS
extracted archive contents
Link:
https://research.acce.ciphertechsolutions.com/results/fd7ff51b-471e-4e94-bfdb-28b0283b4f37/
Malware family:
n/a
ID:
1
File name:
d5ec97d61eb6c1ac66619a72324685f5.exe
Verdict:
Suspicious activity
Analysis date:
2026-03-18 09:37:36 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/7c05c565-7bad-485d-901c-41630c23f7f8

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/57925/
Verdict:
Malicious
Score:
95.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69ba71fe88c80c01586b9341
Tags:
injection virus blic
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Сreating synchronization primitives
Creating a file
Creating a file in the Windows subdirectories
Delayed reading of the file
Searching for the window
Sending a custom TCP request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Launching the default Windows debugger (dwwin.exe)
Gathering data
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/397c02a073aa646aeb721f52abd8b3c912716e24cf34efea12a52016cb7bd471
Verdict:
Malicious
File Type:
exe x32
Detections:
Trojan.NSIS.Makoob.sba Packed.NSIS.Krynis.sb HEUR:Trojan-Downloader.Win32.Minix.gen Trojan-Downloader.Win32.Minix.sb Trojan.Win32.Guloader.sb Trojan.NSIS.Makoob.sbb
Link:
https://opentip.kaspersky.com/397c02a073aa646aeb721f52abd8b3c912716e24cf34efea12a52016cb7bd471/results?tab=lookup
Malware family:
Unlabeled
Create hunting rule
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/bf87536a-ba96-44ac-8020-eecca777dcc8
Result
Threat name:
GuLoader, FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1885516
Signature
Antivirus / Scanner detection for submitted sample
Found direct / indirect Syscall (likely to bypass EDR)
Joe Sandbox ML detected suspicious sample
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)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
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)
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1885516 Sample: WRLCu3MnoV.exe Startdate: 18/03/2026 Architecture: WINDOWS Score: 100 42 www.fancke.xyz 2->42 44 www.xn--e1anqeh.xn--p1ai 2->44 46 23 other IPs or domains 2->46 58 Suricata IDS alerts for network traffic 2->58 60 Antivirus / Scanner detection for submitted sample 2->60 62 Multi AV Scanner detection for submitted file 2->62 66 4 other signatures 2->66 10 WRLCu3MnoV.exe 4 84 2->10         started        signatures3 64 Performs DNS queries to domains with low reputation 42->64 process4 file5 38 C:\Users\user\AppData\Local\...\nsDialogs.dll, PE32 10->38 dropped 40 C:\Users\user\AppData\Local\...\System.dll, PE32 10->40 dropped 76 Tries to detect virtualization through RDTSC time measurements 10->76 78 Unusual module load detection (module proxying) 10->78 80 Switches to a custom stack to bypass stack traces 10->80 82 Found direct / indirect Syscall (likely to bypass EDR) 10->82 14 WRLCu3MnoV.exe 6 10->14         started        18 WRLCu3MnoV.exe 10->18         started        signatures6 process7 dnsIp8 54 drive.usercontent.google.com 142.250.188.1, 443, 49702 GOOGLEUS United States 14->54 56 drive.google.com 142.251.211.206, 443, 49701 GOOGLEUS United States 14->56 84 Maps a DLL or memory area into another process 14->84 86 Found direct / indirect Syscall (likely to bypass EDR) 14->86 20 i73nRDJAolzX.exe 14->20 injected 22 WRLCu3MnoV.exe 14->22         started        signatures9 process10 process11 24 RMActivate_isv.exe 13 20->24         started        27 psr.exe 20->27         started        signatures12 68 Tries to steal Mail credentials (via file / registry access) 24->68 70 Tries to harvest and steal browser information (history, passwords, etc) 24->70 72 Modifies the context of a thread in another process (thread injection) 24->72 74 4 other signatures 24->74 29 RQEofcgN68FFIo.exe 24->29 injected 32 explorer.exe 38 1 24->32 injected 34 firefox.exe 24->34         started        36 chrome.exe 24->36         started        process13 dnsIp14 48 www.rocksaroundturkey.com 193.58.165.65, 49758, 49759, 49760 WEB-CROSSINGAT Austria 29->48 50 www.veltix.top 203.161.58.88, 49714, 49715, 49716 VNPT-AS-VNVNPTCorpVN Malaysia 29->50 52 14 other IPs or domains 29->52
Score:
93%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/397c02a073aa646aeb721f52abd8b3c912716e24cf34efea12a52016cb7bd471
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/397c02a073aa646aeb721f52abd8b3c912716e24cf34efea12a52016cb7bd471/
Verdict:
Malicious
Threat:
Family.FORMBOOK
Link:
https://tip.neiki.dev/file/397c02a073aa646aeb721f52abd8b3c912716e24cf34efea12a52016cb7bd471
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-03-16 09:49:15 UTC
File Type:
PE (Exe)
Extracted files:
48
AV detection:
9 of 36 (25.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hf6afidtvjsgv23sd5jkxwftzejhc3rez42o72qsuuqbns332ryq._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/260318-lkpcqsfs6z/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Contacts third-party web service commonly abused for C2
Loads dropped DLL
Formbook payload
Formbook
Formbook family
Unpacked files
SH256 hash:
397c02a073aa646aeb721f52abd8b3c912716e24cf34efea12a52016cb7bd471
MD5 hash:
d5ec97d61eb6c1ac66619a72324685f5
SHA1 hash:
1520c13bf1b940e1a81995d0ab77e1e47de59515
Link:
https://www.unpac.me/results/f012991c-0ad4-4060-a4bd-dc4218026cce/
SH256 hash:
1e40211af65923c2f4fd02ce021458a7745d28e2f383835e3015e96575632172
MD5 hash:
466179e1c8ee8a1ff5e4427dbb6c4a01
SHA1 hash:
eb607467009074278e4bd50c7eab400e95ae48f7
Link:
https://www.unpac.me/results/f012991c-0ad4-4060-a4bd-dc4218026cce/
SH256 hash:
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
MD5 hash:
0d7ad4f45dc6f5aa87f606d0331c6901
SHA1 hash:
48df0911f0484cbe2a8cdd5362140b63c41ee457
Link:
https://www.unpac.me/results/f012991c-0ad4-4060-a4bd-dc4218026cce/
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/397c02a073aa646aeb721f52abd8b3c912716e24cf34efea12a52016cb7bd471

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:Detect_NSIS_Nullsoft_Installer
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects NSIS installers by .ndata section + NSIS header string
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:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

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/57925/

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