MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2a50dffe59fc9abf2584a9ad52014c13eb3527b0b23dc39c192e66d2e77c2eb5. 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: 16


Intelligence 16 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2a50dffe59fc9abf2584a9ad52014c13eb3527b0b23dc39c192e66d2e77c2eb5
SHA3-384 hash: 853ffc9c71fd86ac1696e0dfad6d2978ce9def8ab7a1555e9461f48b58ef06a3a8e0ce0ab9cfafa6cbb0ec2ff7edd789
SHA1 hash: cf293e22a21d24405594ce9e804fe043390deec3
MD5 hash: 7f74ebf1526281281942eca8aea85331
humanhash: tennessee-oven-network-march
File name:2a50dffe59fc9abf2584a9ad52014c13eb3527b0b23dc39c192e66d2e77c2eb5
Download: download sample
Signature Formbook
Create hunting rule
File size:762'880 bytes
First seen:2025-04-08 08:58:23 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'610 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:0WQiKaxpOlrD/dMwv1p2byAI7ecZNQDY/Shxt83BP9Xk1vA3Mbu8pqjCA2gTcg1A:5QiWrJMwTDa+AY2xt8v01vAAVqTF16
Threatray 612 similar samples on MalwareBazaar
TLSH T148F412AC1B6AD817CA815B701E62F2785B6D1EDCF802A2239FCC7DDFBA76D150D44281
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10522/11/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
dhash icon 6008e4e0f2e2e434 (12 x SnakeKeylogger, 6 x MassLogger, 5 x Formbook)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
418
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
2a50dffe59fc9abf2584a9ad52014c13eb3527b0b23dc39c192e66d2e77c2eb5
Verdict:
Malicious activity
Analysis date:
2025-04-08 16:54:14 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/e31800bc-4ac9-41eb-aae3-e78e9dca7a6b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67f4e6a4e011fe619fad2e4e
Tags:
virus
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/67f4e5690eb02f7be13a4e5c/reports/e3d1b066-accf-40a3-a92e-705c8e440cd9/overview
Verdict:
Malicious
Labled as:
Trojan.GenericS
Link:
https://www.hybrid-analysis.com/sample/2a50dffe59fc9abf2584a9ad52014c13eb3527b0b23dc39c192e66d2e77c2eb5
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c78ee083-48ce-4e0a-ba24-3c22ae842410
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1659208
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
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)
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)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1659208 Sample: pkx1NH7Ny8.exe Startdate: 08/04/2025 Architecture: WINDOWS Score: 100 30 www.xxxvideosbox.xyz 2->30 32 www.031234912.xyz 2->32 34 13 other IPs or domains 2->34 44 Antivirus detection for URL or domain 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 Yara detected FormBook 2->48 52 3 other signatures 2->52 10 pkx1NH7Ny8.exe 3 2->10         started        signatures3 50 Performs DNS queries to domains with low reputation 32->50 process4 file5 28 C:\Users\user\AppData\...\pkx1NH7Ny8.exe.log, ASCII 10->28 dropped 13 pkx1NH7Ny8.exe 10->13         started        process6 signatures7 64 Maps a DLL or memory area into another process 13->64 16 9yPJq51mJLbQZBn4czoAjB.exe 13->16 injected process8 signatures9 42 Found direct / indirect Syscall (likely to bypass EDR) 16->42 19 Utilman.exe 13 16->19         started        process10 signatures11 54 Tries to steal Mail credentials (via file / registry access) 19->54 56 Tries to harvest and steal browser information (history, passwords, etc) 19->56 58 Modifies the context of a thread in another process (thread injection) 19->58 60 3 other signatures 19->60 22 9yPJq51mJLbQZBn4czoAjB.exe 19->22 injected 26 firefox.exe 19->26         started        process12 dnsIp13 36 www.xxxvideosbox.xyz 91.216.220.20, 49691, 80 OLIMPKZ-NETKZ Kazakhstan 22->36 38 031234912.xyz 144.76.229.203, 49697, 49698, 49699 HETZNER-ASDE Germany 22->38 40 7 other IPs or domains 22->40 62 Found direct / indirect Syscall (likely to bypass EDR) 22->62 signatures14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/2a50dffe59fc9abf2584a9ad52014c13eb3527b0b23dc39c192e66d2e77c2eb5
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2a50dffe59fc9abf2584a9ad52014c13eb3527b0b23dc39c192e66d2e77c2eb5/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2025-03-28 08:50:20 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fjin77sz7snl6jmevgwveakmcpvtkj5qwi64hhazfztnfz34f22q._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
Similar samples:
038677a185ea0f86acc0ebdc57c493a7062638ea3856d2175e28e3cc28be271f
Formbook
2a50dffe59fc9abf2584a9ad52014c13eb3527b0b23dc39c192e66d2e77c2eb5
Formbook
37cca04a4dbc9178e4aecfb9caced937d402c521a7bedfcb21077eaaf2c1432a
Formbook
7e3a485080e55e3d34ac4f5a4a019160c1d20dd5e19da336c851afabc7169252
Formbook
8e4108d867c054d193cca6c2f9fcfa7288d7a1b9e6ac9e41ae60cfd15b1e0572
Formbook
+ 602 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/250408-kxz5bssvgw/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/6ad644b7-4171-4ccc-b97a-94c8ba071b9c
Unpacked files
SH256 hash:
2a50dffe59fc9abf2584a9ad52014c13eb3527b0b23dc39c192e66d2e77c2eb5
MD5 hash:
7f74ebf1526281281942eca8aea85331
SHA1 hash:
cf293e22a21d24405594ce9e804fe043390deec3
Link:
https://www.unpac.me/results/81649905-3996-48f5-9728-9108e1b76714/
SH256 hash:
65f0880737b9a2dbf00faa12e37e679b8a1232237df736360fcc14e19e806cca
MD5 hash:
f22fece115e9c0f99bf3bff82d4fb834
SHA1 hash:
034e911420fad38712fb1200d9ff116af39a7cd4
Link:
https://www.unpac.me/results/81649905-3996-48f5-9728-9108e1b76714/
SH256 hash:
05f9ce752a29c05fc70056515513815fb518bd01246a735c7cc1bc0f40c9b089
MD5 hash:
960cd878150977a125941f6caa794ca0
SHA1 hash:
85508296a194593bea688321e9c203a7a561088e
Link:
https://www.unpac.me/results/81649905-3996-48f5-9728-9108e1b76714/
SH256 hash:
af5b0f416e17e075b796d7e0acd97b3c4ad5785ec45703f51b35b8ffb9c34262
MD5 hash:
9e34b29dc27d29760b36a033a819ab9f
SHA1 hash:
c77a25e1b6c341440ee25477982e25a3fb42e140
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/81649905-3996-48f5-9728-9108e1b76714/
SH256 hash:
4ddcb8901f95c52a2f8806da5c82f89e2d3ee184a2741c6e5fa09084287bf8cb
MD5 hash:
cffd7ae4e826d08c197cad5a369bdc0f
SHA1 hash:
a7808a1fe4db25a786ea9305c3bdfa9c5f4e30eb
Link:
https://www.unpac.me/results/81649905-3996-48f5-9728-9108e1b76714/
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/2a50dffe59fc9abf2584a9ad52014c13eb3527b0b23dc39c192e66d2e77c2eb5

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
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:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
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.

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments