MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c25af148d844a284434907e6a60abe904c462fa48fb7fa4ea145a435ab106afa. 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 9 File information Comments
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SHA256 hash: c25af148d844a284434907e6a60abe904c462fa48fb7fa4ea145a435ab106afa
SHA3-384 hash: 5f54ac64dc1d5607681633b26597bff4ecfbf87d3a71a99f85ebff4d0f9fb946cbf5e3f82a522d8d6f57550048392e8b
SHA1 hash: 33ae23d77887702f3dbf72f9f6ae430eb2152754
MD5 hash: cb8016b4b94a30aad2b4ba92667b0cdd
humanhash: nine-jersey-august-hot
File name:Purchase Order.exe
Download: download sample
Signature Formbook
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File size:778'240 bytes
First seen:2025-03-26 07:07:28 UTC
Last seen:2025-03-27 15:39:25 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:2u2iNczJ+Wnqn++0Kdpv9p9fr1Og0rlwdRzDQEg40Pio9z4b/YcRzeQWSILgQdI8:f1qzMyKdbpi9rlwdRzDVgDiV/tR41LgG
TLSH T161F402A89248EA13CD6227710D71F57413B92EDEB815E3164FE97DEBB932F649C10283
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 threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
429
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Purchase Order.exe
Verdict:
No threats detected
Analysis date:
2025-03-26 07:11:39 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/77aa9a3a-c69c-4ec4-b0f4-fc61468d42a3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
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Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67e3a7e3cb6d38a89f3e44d4
Tags:
virus micro msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
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:
masquerade obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/67e3a7e109c39f5498b5892e/reports/9434c331-7f07-45f2-8bf9-7edec341b750/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/c25af148d844a284434907e6a60abe904c462fa48fb7fa4ea145a435ab106afa
Result
Verdict:
SUSPICIOUS
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/b32e83b4-cb37-4271-badc-b3f8873c8a1a
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1648790
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)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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 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: 1648790 Sample: Purchase Order.exe Startdate: 26/03/2025 Architecture: WINDOWS Score: 100 31 www.link6-tesla-nd6.xyz 2->31 33 www.vaishnavi.xyz 2->33 35 4 other IPs or domains 2->35 45 Suricata IDS alerts for network traffic 2->45 47 Antivirus detection for URL or domain 2->47 49 Antivirus / Scanner detection for submitted sample 2->49 53 5 other signatures 2->53 10 Purchase Order.exe 3 2->10         started        signatures3 51 Performs DNS queries to domains with low reputation 33->51 process4 file5 29 C:\Users\user\...\Purchase Order.exe.log, ASCII 10->29 dropped 65 Injects a PE file into a foreign processes 10->65 14 Purchase Order.exe 10->14         started        signatures6 process7 signatures8 67 Maps a DLL or memory area into another process 14->67 17 S4VtGSy4UfrS.exe 14->17 injected process9 signatures10 43 Found direct / indirect Syscall (likely to bypass EDR) 17->43 20 cipher.exe 13 17->20         started        process11 signatures12 55 Tries to steal Mail credentials (via file / registry access) 20->55 57 Tries to harvest and steal browser information (history, passwords, etc) 20->57 59 Modifies the context of a thread in another process (thread injection) 20->59 61 3 other signatures 20->61 23 S4VtGSy4UfrS.exe 20->23 injected 27 firefox.exe 20->27         started        process13 dnsIp14 37 www.hellosweetie.net 104.166.91.35, 49724, 49725, 49726 QUICKPACKETUS United States 23->37 39 www.link6-tesla-nd6.xyz 104.21.50.77, 49728, 49729, 49730 CLOUDFLARENETUS United States 23->39 41 3 other IPs or domains 23->41 63 Found direct / indirect Syscall (likely to bypass EDR) 23->63 signatures15
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c25af148d844a284434907e6a60abe904c462fa48fb7fa4ea145a435ab106afa
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c25af148d844a284434907e6a60abe904c462fa48fb7fa4ea145a435ab106afa/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
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Status:
Malicious
First seen:
2025-03-26 07:08:17 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
27 of 36 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yjnpcsgyisriiq2ja7tkmcv6sbgeml5er637utvbiwsdlkyqnl5a._file
Verdict:
malicious
Label(s):
unc_loader_037
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formbook
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Similar samples:
error
Formbook
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/250326-hya6gsslz5/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/7d12ea05-8180-4c1e-b77f-049e8259a7f5
Unpacked files
SH256 hash:
c25af148d844a284434907e6a60abe904c462fa48fb7fa4ea145a435ab106afa
MD5 hash:
cb8016b4b94a30aad2b4ba92667b0cdd
SHA1 hash:
33ae23d77887702f3dbf72f9f6ae430eb2152754
Link:
https://www.unpac.me/results/a057ccd0-f6fe-4fbb-81f4-232d29809197/
SH256 hash:
565225a8561134b4966c139430b4d6945eedd45444d8435a48c6e7f41f7f7e30
MD5 hash:
3aebca61c665584c799acf55900cb26e
SHA1 hash:
3717a4f60d2822dfd8effda5490c93e7ccb38ebc
Link:
https://www.unpac.me/results/a057ccd0-f6fe-4fbb-81f4-232d29809197/
SH256 hash:
689a87b9c5cc85a9aef7a59416d0741b3683ba12086af5ce0d1876308af7baca
MD5 hash:
dc282da2846801f8e688187819e3bde1
SHA1 hash:
a122a74f180c90ae4c13cdd89f7bb5e04a554e46
Link:
https://www.unpac.me/results/a057ccd0-f6fe-4fbb-81f4-232d29809197/
SH256 hash:
86bab62c0fc1704bdd1ed8edc18a3d43c616219264bda7c4af6b21c20fa19f34
MD5 hash:
797c913f818bd9c51992f95b1bcb1d92
SHA1 hash:
ccfc1b2f828ac5f5c5f853735b481567c77d4b45
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
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SUSP_OBF_NET_Reactor_Indicators_Jan24
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Link:
https://www.unpac.me/results/a057ccd0-f6fe-4fbb-81f4-232d29809197/
SH256 hash:
2ea02cc3ee737177d2a96d67f16c69245c4a53c8c2f52a5cea9982fef5aae25e
MD5 hash:
31d7552d4acf9ec73d4f2ae2d489ee4e
SHA1 hash:
6963653ed7a181a3ab4722e1ee7b1bb048e00154
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/a057ccd0-f6fe-4fbb-81f4-232d29809197/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c25af148d844/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/c25af148d844a284434907e6a60abe904c462fa48fb7fa4ea145a435ab106afa

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
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Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:NET
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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)
Rule name:win32_dotnet_form_obfuscate
Create hunting rule
Author:Reedus0
Description:Rule for detecting .NET form obfuscate malware

File information

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

Malspam

Formbook

Executable exe c25af148d844a284434907e6a60abe904c462fa48fb7fa4ea145a435ab106afa

(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