MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bbb4d62f2db865624777d1d4413cfa6aac6139ef783befcff575a640a31e3a56. 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 4 File information Comments
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SHA256 hash: bbb4d62f2db865624777d1d4413cfa6aac6139ef783befcff575a640a31e3a56
SHA3-384 hash: a76494c6ac97816478b1becebb17c27a1682995e7af293a276080d54e797a812f35e1f2cb39faad850adeca42f6cb6b5
SHA1 hash: 39e88f220f0cef82fc217f2b9059ddd968f934f0
MD5 hash: 1384621a58bb2eee81ab85037e86bc6e
humanhash: indigo-table-leopard-quiet
File name:pYOi6F7j4EXQuuf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:761'856 bytes
First seen:2024-09-05 09:03:58 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:0qdBj0z1RA/J1UoIG5MPU0wOqp0KG2KU+ffyC52P1naCEDhhBkWYNQat5e1orLoW:5/3UobyTkpxGUbCYP1addhBkWYb/rLoB
TLSH T1E2F412C1A7646E65CC7B44F710160AE65AF49C29D221F6A24FD7327F8CFB791A222307
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 00a282a2a282a200 (17 x Formbook, 11 x AgentTesla, 4 x SnakeKeylogger)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
393
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
pYOi6F7j4EXQuuf.exe
Verdict:
Malicious activity
Analysis date:
2024-09-05 09:05:41 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/fe2aa1ca-8859-4331-a20c-01e82cb944fe

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.BackDoor.AgentTeslaNET.35.17706.32739.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66d97407f3d7ccf99f900db4
Tags:
Network Static 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/66d97404e19c06a3e691c05f/reports/2f93e085-a3c5-4022-962e-05e6df6679cc/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/bbb4d62f2db865624777d1d4413cfa6aac6139ef783befcff575a640a31e3a56
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/334a99fb-7fda-417f-b3b0-8889a0d67411
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1504724
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
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)
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to resolve many domain names, but no domain seems valid
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1504724 Sample: pYOi6F7j4EXQuuf.exe Startdate: 05/09/2024 Architecture: WINDOWS Score: 100 31 www.ovepepe.xyz 2->31 33 www.harkclothingdesigns.xyz 2->33 35 9 other IPs or domains 2->35 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus / Scanner detection for submitted sample 2->41 45 9 other signatures 2->45 11 pYOi6F7j4EXQuuf.exe 3 2->11         started        signatures3 43 Performs DNS queries to domains with low reputation 33->43 process4 file5 29 C:\Users\user\...\pYOi6F7j4EXQuuf.exe.log, ASCII 11->29 dropped 55 Tries to detect virtualization through RDTSC time measurements 11->55 57 Switches to a custom stack to bypass stack traces 11->57 15 pYOi6F7j4EXQuuf.exe 11->15         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Queues an APC in another process (thread injection) 15->63 65 Found direct / indirect Syscall (likely to bypass EDR) 15->65 18 explorer.exe 69 1 15->18 injected process9 process10 20 control.exe 18->20         started        23 autochk.exe 18->23         started        signatures11 47 Modifies the context of a thread in another process (thread injection) 20->47 49 Maps a DLL or memory area into another process 20->49 51 Tries to detect virtualization through RDTSC time measurements 20->51 53 Switches to a custom stack to bypass stack traces 20->53 25 cmd.exe 1 20->25         started        process12 process13 27 conhost.exe 25->27         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/bbb4d62f2db865624777d1d4413cfa6aac6139ef783befcff575a640a31e3a56
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/bbb4d62f2db865624777d1d4413cfa6aac6139ef783befcff575a640a31e3a56/
Threat name:
ByteCode-MSIL.Trojan.Taskun
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Status:
Malicious
First seen:
2024-09-05 09:04:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
14 of 38 (36.84%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xo2nmlznxbswer3x2hkecph2nkwgcopppa567t7vowtebiy6hjla._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/240905-k1k5ksxgqa/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/53ff40b8-201a-4b89-ba2c-64b2af9dd36a
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
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win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/934b4a8b-12dc-48a6-a0ba-595f63eda79f/
Parent samples :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 hash:
ae6f4dd27563ce5d52f7183dcf33b7f0c46d822ce0aa765d9192a3f0368dc7e1
MD5 hash:
e6617b01800f253f0b5c524b3c3b195d
SHA1 hash:
5f8a40688d44f15cf0752867ae5aa9798a2cddb2
Link:
https://www.unpac.me/results/934b4a8b-12dc-48a6-a0ba-595f63eda79f/
SH256 hash:
38bf6e9bed91815764072ea0d43289f00fc01fbd6b5812dcd626549bf2e32a2c
MD5 hash:
ff9633aaa4b4dc42c3ffac800af3911b
SHA1 hash:
48b8483304f0fb4522fd523804d7040b8d0d938c
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
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SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/934b4a8b-12dc-48a6-a0ba-595f63eda79f/
SH256 hash:
bbb4d62f2db865624777d1d4413cfa6aac6139ef783befcff575a640a31e3a56
MD5 hash:
1384621a58bb2eee81ab85037e86bc6e
SHA1 hash:
39e88f220f0cef82fc217f2b9059ddd968f934f0
Link:
https://www.unpac.me/results/934b4a8b-12dc-48a6-a0ba-595f63eda79f/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bbb4d62f2db8/report/overview.html
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/bbb4d62f2db865624777d1d4413cfa6aac6139ef783befcff575a640a31e3a56

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
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Author:malware-lu
Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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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 bbb4d62f2db865624777d1d4413cfa6aac6139ef783befcff575a640a31e3a56

(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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