MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3a150034f743320c85c890a29755032d9f850d0da9848c7a96c63bd2690e3495. 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
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SHA256 hash: 3a150034f743320c85c890a29755032d9f850d0da9848c7a96c63bd2690e3495
SHA3-384 hash: ec235becfe3d25728cb37cf19c17492b259407f92b146b5dcd9c6175a495858778e9f619514dfd41a57c0685c950f314
SHA1 hash: ec5d9ef1295313778a2fc53d49b58b2c52ecbf18
MD5 hash: 0ad858f5d7afc96924fb09dce7fc64c5
humanhash: monkey-moon-september-magazine
File name:rwilsss.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:816'128 bytes
First seen:2025-03-27 12:30:06 UTC
Last seen:2025-04-08 08:51:26 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'738 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:qk9f+fz5zwr8nn4ltzVNqYLXOsdRtZBep9+B46AN:qKf+fNzwInSVEYLX5DtZBeH+B46AN
TLSH T1FB05E0483629CB16EAB88BF90520E23017F92DDFB11AE2655ECE6CEB7575F010D44B63
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
Reporter FXOLabs
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
5
# of downloads :
507
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
rwilsss.exe
Verdict:
Suspicious activity
Analysis date:
2025-03-27 12:43:25 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c30b0735-07ab-4e9f-8991-ed43cf82f71d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.CrypterX-gen.18928.20575.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
94.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67e544e212b5dc44da3e6735
Tags:
virus micro msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/67e544de631830704a891de7/reports/a5789c54-4214-415f-8aed-e54fd774e4c3/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/3a150034f743320c85c890a29755032d9f850d0da9848c7a96c63bd2690e3495
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f7218e59-98e5-42b1-9b5e-c9fd04c82102
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1650112
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
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
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)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1650112 Sample: rwilsss.exe Startdate: 27/03/2025 Architecture: WINDOWS Score: 100 34 www.link6-tesla-nd6.xyz 2->34 36 www.vaishnavi.xyz 2->36 38 2 other IPs or domains 2->38 42 Suricata IDS alerts for network traffic 2->42 44 Antivirus detection for URL or domain 2->44 46 Antivirus / Scanner detection for submitted sample 2->46 50 5 other signatures 2->50 10 rwilsss.exe 3 2->10         started        signatures3 48 Performs DNS queries to domains with low reputation 36->48 process4 file5 26 C:\Users\user\AppData\...\rwilsss.exe.log, ASCII 10->26 dropped 60 Injects a PE file into a foreign processes 10->60 14 rwilsss.exe 10->14         started        signatures6 process7 signatures8 62 Maps a DLL or memory area into another process 14->62 17 956BZGpkmvZDS0Ds.exe 14->17 injected process9 dnsIp10 28 www.hellosweetie.net 104.166.91.35, 49724, 49725, 49726 QUICKPACKETUS United States 17->28 30 www.link6-tesla-nd6.xyz 172.64.80.1, 49728, 49729, 49730 CLOUDFLARENETUS United States 17->30 32 www.greyareaclothing.store 103.224.182.242, 49723, 80 TRELLIAN-AS-APTrellianPtyLimitedAU Australia 17->32 40 Found direct / indirect Syscall (likely to bypass EDR) 17->40 21 cipher.exe 13 17->21         started        signatures11 process12 signatures13 52 Tries to steal Mail credentials (via file / registry access) 21->52 54 Tries to harvest and steal browser information (history, passwords, etc) 21->54 56 Modifies the context of a thread in another process (thread injection) 21->56 58 2 other signatures 21->58 24 firefox.exe 21->24         started        process14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3a150034f743320c85c890a29755032d9f850d0da9848c7a96c63bd2690e3495
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3a150034f743320c85c890a29755032d9f850d0da9848c7a96c63bd2690e3495/
Threat name:
ByteCode-MSIL.Trojan.CrypterX
Create hunting rule
Status:
Malicious
First seen:
2025-03-27 09:23:37 UTC
File Type:
PE (.Net Exe)
Extracted files:
21
AV detection:
16 of 36 (44.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hikqanhximzazboiscrjovidfwpykdinvgciy6uwyy55e2iogskq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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/250327-ppmw9a1zdy/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/659a6629-300b-4a35-92ca-11431d4dc6d9
Unpacked files
SH256 hash:
3a150034f743320c85c890a29755032d9f850d0da9848c7a96c63bd2690e3495
MD5 hash:
0ad858f5d7afc96924fb09dce7fc64c5
SHA1 hash:
ec5d9ef1295313778a2fc53d49b58b2c52ecbf18
Link:
https://www.unpac.me/results/d5be0409-f5fa-4812-81f0-6a2672bbe9f9/
SH256 hash:
65f0880737b9a2dbf00faa12e37e679b8a1232237df736360fcc14e19e806cca
MD5 hash:
f22fece115e9c0f99bf3bff82d4fb834
SHA1 hash:
034e911420fad38712fb1200d9ff116af39a7cd4
Link:
https://www.unpac.me/results/d5be0409-f5fa-4812-81f0-6a2672bbe9f9/
SH256 hash:
68f17a3c3a159fa094054345b73d273c7322adc7e388d78d2d94675442281e4a
MD5 hash:
1ee7a0d16bec540db448ed3018e5ed33
SHA1 hash:
9d6496f2f7c3d48b62cfe3ea30a998c2e3338af7
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/d5be0409-f5fa-4812-81f0-6a2672bbe9f9/
SH256 hash:
689a87b9c5cc85a9aef7a59416d0741b3683ba12086af5ce0d1876308af7baca
MD5 hash:
dc282da2846801f8e688187819e3bde1
SHA1 hash:
a122a74f180c90ae4c13cdd89f7bb5e04a554e46
Link:
https://www.unpac.me/results/d5be0409-f5fa-4812-81f0-6a2672bbe9f9/
SH256 hash:
428ae691f84b2642d2435a7e7a9c04c98afcee4c491de5484e173774bece6c34
MD5 hash:
c5e8c7d955830e3d407965d08312d84e
SHA1 hash:
b38745ed47c7de0d7e2fd96211a28afdd9b6bd2e
Link:
https://www.unpac.me/results/d5be0409-f5fa-4812-81f0-6a2672bbe9f9/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3a150034f743/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/3a150034f743320c85c890a29755032d9f850d0da9848c7a96c63bd2690e3495

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.

Malspam

Formbook

Executable exe 3a150034f743320c85c890a29755032d9f850d0da9848c7a96c63bd2690e3495

(this sample)

  
Delivery method
Distributed via e-mail attachment

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 (HIGH_ENTROPY_VA)high

Comments