MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8c3942ec338c5736d15454714917f9dfb976547392b16a62213384ca68c24cb0. 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: 14


Intelligence 14 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8c3942ec338c5736d15454714917f9dfb976547392b16a62213384ca68c24cb0
SHA3-384 hash: b5d31fc205d95896cb1bd81a9806680d95ee0082acf35c2c8d39c8fca2a794af9be097cd30b8eb25c91b405096c7f355
SHA1 hash: e49eb8046e74ca08dc063ac546bc2c910c758707
MD5 hash: 8a5400884d14696184d6ad0eb3fce506
humanhash: sierra-table-seventeen-artist
File name:SecuriteInfo.com.Trojan.PackedNET.3223.18080.16851
Download: download sample
Signature Formbook
Create hunting rule
File size:722'432 bytes
First seen:2025-05-29 08:30:21 UTC
Last seen:2025-05-30 07:31:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:/gDB6yC6e6izYvbGwmojIw1OtRzA7cPVnKOLY5Q/2N49L9D2YTCTdYIVKiMzzOdo:/WC67/Kw5IoOtRM6s5QeC9eTdYiKiMzC
TLSH T1BFE4122E1722D612C89657F902B2D2B437B96EEEC432D3460FDE6DDBB96BB101640347
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 SecuriteInfoCom
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
4
# of downloads :
537
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SecuriteInfo.com.Trojan.PackedNET.3223.18080.16851
Verdict:
No threats detected
Analysis date:
2025-05-29 08:31:06 UTC
Tags:
netreactor
Link:
https://app.any.run/tasks/f3466745-31dc-4cc1-8d96-f5a04fd93d30

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/6160/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3223.18080.16851.UNOFFICIAL
Create hunting rule

Verdict:
Clean
Score:
89.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68381d58acf88f5815e85764
Tags:
n/a
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)
Searching for the window
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/68381b40fd02ed5e058e1808/reports/c0044a5c-d0c1-4d59-bbbe-fdd9be1dff9f/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/8c3942ec338c5736d15454714917f9dfb976547392b16a62213384ca68c24cb0
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/597f20a7-e3c2-41c1-ba8e-9bd01d871526
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
80 / 100
Link:
https://www.joesandbox.com/analysis/1701357
Signature
.NET source code contains potential unpacker
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Uses threadpools to delay analysis
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8c3942ec338c5736d15454714917f9dfb976547392b16a62213384ca68c24cb0
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8c3942ec338c5736d15454714917f9dfb976547392b16a62213384ca68c24cb0/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2025-05-29 06:32:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
25 of 37 (67.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rq4uf3btrrltnukukryusf7z364xmvdtskywuyrbgocmu2gcjsya._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/250529-keclbaztbw/
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/b7f9ad9f-2e39-408f-b741-57572aa769d5
Unpacked files
SH256 hash:
8c3942ec338c5736d15454714917f9dfb976547392b16a62213384ca68c24cb0
MD5 hash:
8a5400884d14696184d6ad0eb3fce506
SHA1 hash:
e49eb8046e74ca08dc063ac546bc2c910c758707
Link:
https://www.unpac.me/results/0b7421cb-d534-4482-9287-9faafecf3704/
SH256 hash:
0c5849afae966c9f08010d47b53797e1fc904d546e60c4503915667d535c4475
MD5 hash:
a2829a883dfd7818a93dc7219d69b66f
SHA1 hash:
4b1bc73b20ac2d6052de90e29880630d4fcf5ae8
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/0b7421cb-d534-4482-9287-9faafecf3704/
SH256 hash:
9e11978a92be19092136c64c83ab9ef4a5273b1d9f34d5287263b42ea68d6958
MD5 hash:
eaf69e05aeb9a3a33f016e8f1744a7c1
SHA1 hash:
94adb39207be08673e7378e28b881707582272b4
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Link:
https://www.unpac.me/results/0b7421cb-d534-4482-9287-9faafecf3704/
Parent samples :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 hash:
00383de0838a17a8d61ca4375fb8b275297337d6cce73afe108efa35018058fc
MD5 hash:
9850dea4433e133e33091b18c7a6bb32
SHA1 hash:
d739029a85827add4061388535457d264f22ac7c
Link:
https://www.unpac.me/results/0b7421cb-d534-4482-9287-9faafecf3704/
SH256 hash:
dc03fe83b88ecd1086340cf60835c034e6a1dc13538bc872ee54e5b62ea996d8
MD5 hash:
8d9f571c83edc271de7077347418d417
SHA1 hash:
ecf49ede1240ed0582260fd0943a5b1fff0b470c
Link:
https://www.unpac.me/results/0b7421cb-d534-4482-9287-9faafecf3704/
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/8c3942ec338c5736d15454714917f9dfb976547392b16a62213384ca68c24cb0

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.

Cape
Cape
https://www.capesandbox.com/analysis/6160/

Comments