MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 39641278c51c0559206d6d7c4f34c705e9ac56fb5f6073cef1c0c3818497783a. 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: 19


Intelligence 19 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 39641278c51c0559206d6d7c4f34c705e9ac56fb5f6073cef1c0c3818497783a
SHA3-384 hash: 033baf063e98aabd0dbad7f96c0ba51605742303ff33f9ae6b905ef034a13658e9a0b5303f9006591e90ad5ebb7e72d7
SHA1 hash: 83ac7bb7826d28bc2c1d1a22ad3b0a58d29c0042
MD5 hash: 2e8e09c833fab65fc5a906818bfb7917
humanhash: potato-uncle-jig-carpet
File name:8mwXY7Lh2phgnOz.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:617'984 bytes
First seen:2024-08-29 12:30:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:9VVjBXv/qJD4dQlsSQKbNJjBCeN5Me8cH36k9aA7GfVXuHeSsSLvd:p1viBKQjrJ1Ce78cH3H9aA7GUl
TLSH T1A7D423114668C752E8BF47FA588A0A842B32F2AFE1D4D738BCDF17D68851B104BB1B57
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
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
File icon (PE):PE icon
dhash icon 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
399
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
8mwXY7Lh2phgnOz.exe
Verdict:
Malicious activity
Analysis date:
2024-08-29 12:35:21 UTC
Tags:
formbook xloader stealer
Link:
https://app.any.run/tasks/bfc34d20-d05a-4b02-b8ad-df24ec337ce5

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.BackDoor.AgentTeslaNET.29.32648.9362.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66d06a0ff1a57bfb7091565b
Tags:
Stealth Swotter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/66d06a0e58cbff3e3abe4fb2/reports/bd73dc9c-7b4e-4cc4-bbb3-bdda55efec1e/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/39641278c51c0559206d6d7c4f34c705e9ac56fb5f6073cef1c0c3818497783a
Result
Verdict:
MALICIOUS
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/ef206d49-2eba-4917-8cb0-9a1eabc37f59
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1501172
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1501172 Sample: 8mwXY7Lh2phgnOz.exe Startdate: 29/08/2024 Architecture: WINDOWS Score: 100 33 www.emdchocolate.xyz 2->33 35 www.sed-cars-93620.bond 2->35 37 12 other IPs or domains 2->37 43 Suricata IDS alerts for network traffic 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 51 9 other signatures 2->51 11 8mwXY7Lh2phgnOz.exe 3 2->11         started        signatures3 49 Performs DNS queries to domains with low reputation 33->49 process4 file5 31 C:\Users\user\...\8mwXY7Lh2phgnOz.exe.log, ASCII 11->31 dropped 63 Tries to detect virtualization through RDTSC time measurements 11->63 65 Injects a PE file into a foreign processes 11->65 67 Switches to a custom stack to bypass stack traces 11->67 15 8mwXY7Lh2phgnOz.exe 11->15         started        18 8mwXY7Lh2phgnOz.exe 11->18         started        signatures6 process7 signatures8 69 Modifies the context of a thread in another process (thread injection) 15->69 71 Maps a DLL or memory area into another process 15->71 73 Sample uses process hollowing technique 15->73 75 2 other signatures 15->75 20 explorer.exe 72 1 15->20 injected process9 dnsIp10 39 g71532f.cdn.0000cdgnfz.com 154.23.243.75, 55344, 80 COGENT-174US United States 20->39 41 77980.bodis.com 199.59.243.226, 55343, 80 BODIS-NJUS United States 20->41 53 System process connects to network (likely due to code injection or exploit) 20->53 24 wscript.exe 20->24         started        signatures11 process12 signatures13 55 Modifies the context of a thread in another process (thread injection) 24->55 57 Maps a DLL or memory area into another process 24->57 59 Tries to detect virtualization through RDTSC time measurements 24->59 61 Switches to a custom stack to bypass stack traces 24->61 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/39641278c51c0559206d6d7c4f34c705e9ac56fb5f6073cef1c0c3818497783a
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/39641278c51c0559206d6d7c4f34c705e9ac56fb5f6073cef1c0c3818497783a/
Threat name:
ByteCode-MSIL.Trojan.SnakeKeyLogger
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Status:
Malicious
First seen:
2024-08-29 12:31:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hfsbe6gfdqcvsidnnv6e6nghaxu2yvx3l5qhhtxrydbydbexpa5a._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:d16h discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/240829-pp3mps1gle/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/363f63f5-c673-467e-be53-f7b54307f5d4
Unpacked files
SH256 hash:
4cd17fb56e2098be919e5190aad403b0ef40eb3df5ea756d3e50c0706aa230ce
MD5 hash:
b364aa1dd34d1fe2d21b5f4e8018a300
SHA1 hash:
3ce021f11b4b0166c1e7d7873f7a1e3988b6f4d9
Detections:
FormBook
Create hunting rule
win_formbook_g0
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win_formbook_auto
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/8c7dc200-00e1-4ca2-a419-27db1bc98fb4/
Parent samples :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 hash:
d5168f01ada143e23ef7f0efc36d4c4e9571ffec803220017ba5b206b011afdf
MD5 hash:
5c37775d57d1b622b0b4f86ebe1281b5
SHA1 hash:
d91a0ab84ba486600e05e164ba02f63813266027
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/8c7dc200-00e1-4ca2-a419-27db1bc98fb4/
SH256 hash:
c22b6e2cfed3d7e9e0bc312aedb34dd32d9b8049319032ddc7557c9756cf07f7
MD5 hash:
afafe33158d5f82d678539141bbd0455
SHA1 hash:
5746d7bc26825f9bbf73487ee0dd5324d9a19288
Link:
https://www.unpac.me/results/8c7dc200-00e1-4ca2-a419-27db1bc98fb4/
SH256 hash:
39641278c51c0559206d6d7c4f34c705e9ac56fb5f6073cef1c0c3818497783a
MD5 hash:
2e8e09c833fab65fc5a906818bfb7917
SHA1 hash:
83ac7bb7826d28bc2c1d1a22ad3b0a58d29c0042
Link:
https://www.unpac.me/results/8c7dc200-00e1-4ca2-a419-27db1bc98fb4/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/39641278c51c/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/39641278c51c0559206d6d7c4f34c705e9ac56fb5f6073cef1c0c3818497783a

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
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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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

Formbook

Executable exe 39641278c51c0559206d6d7c4f34c705e9ac56fb5f6073cef1c0c3818497783a

(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

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