MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4d88b7c45db03545e9efd2f6e07d838849a43594f6a425c05189ca93317a667b. 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: 12


Intelligence 12 IOCs YARA 6 File information Comments
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SHA256 hash: 4d88b7c45db03545e9efd2f6e07d838849a43594f6a425c05189ca93317a667b
SHA3-384 hash: 1c89ef6c570689efb6ba9d68181f36410d815a047626093381c5679a46f5e555e79d9fbaabcc4b7670a7160440444082
SHA1 hash: e41ec4b2f258d8a55feb8a922adc80bc25a9f1c6
MD5 hash: d20d3386bc30d34e7ff53a07b6151416
humanhash: comet-purple-xray-sweet
File name:d20d3386bc30d34e7ff53a07b6151416.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:516'096 bytes
First seen:2021-11-17 15:31:55 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 12288:aVvsJs9947u77t8aD7NzttVgg1w8GTTks6u8:0UGf4oZ885Vgg1w8GTL6u8
Threatray 9'801 similar samples on MalwareBazaar
TLSH T1C3B4CF1673174B4AD4186BB4EEFB7B201794BBB5A832430BD2D5792E601F3EB3991702
File icon (PE):PE icon
dhash icon 7e646c6464c6c6e4 (3 x Formbook, 1 x RemcosRAT, 1 x CoinMiner)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
138
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
d20d3386bc30d34e7ff53a07b6151416.exe
Verdict:
Suspicious activity
Analysis date:
2021-11-17 15:39:47 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/a22a674c-0587-4b3c-9bc6-a4e88df4dc00

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Gathering data
Detection(s):
Win.Dropper.Generic-7113183-0
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Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/619520764912a8c920a18bb8/reports/4dd0d60f-bde9-4d92-8701-7ea9d499fc70/overview
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/109aaf97-c242-4a92-a087-79fe25632139
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/891334
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected FormBook malware
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 523808 Sample: YUT1QjWP0I.exe Startdate: 17/11/2021 Architecture: WINDOWS Score: 100 41 www.shmckeji.com 2->41 51 Found malware configuration 2->51 53 Malicious sample detected (through community Yara rule) 2->53 55 Antivirus detection for URL or domain 2->55 57 6 other signatures 2->57 11 YUT1QjWP0I.exe 3 2->11         started        15 explorer.exe 125 2->15         started        signatures3 process4 file5 35 C:\Users\user\AppData\...\YUT1QjWP0I.exe, PE32 11->35 dropped 37 C:\Users\...\YUT1QjWP0I.exe:Zone.Identifier, ASCII 11->37 dropped 39 C:\Users\user\AppData\...\YUT1QjWP0I.exe.log, ASCII 11->39 dropped 69 Writes to foreign memory regions 11->69 71 Allocates memory in foreign processes 11->71 73 Injects a PE file into a foreign processes 11->73 17 YUT1QjWP0I.exe 11->17         started        signatures6 process7 signatures8 43 Antivirus detection for dropped file 17->43 45 Multi AV Scanner detection for dropped file 17->45 47 Machine Learning detection for dropped file 17->47 49 5 other signatures 17->49 20 explorer.exe 17->20 injected process9 process10 22 mstsc.exe 18 20->22         started        file11 31 C:\Users\user\AppData\...\27Alogrv.ini, data 22->31 dropped 33 C:\Users\user\AppData\...\27Alogri.ini, data 22->33 dropped 59 Detected FormBook malware 22->59 61 Tries to steal Mail credentials (via file / registry access) 22->61 63 Tries to harvest and steal browser information (history, passwords, etc) 22->63 65 3 other signatures 22->65 26 cmd.exe 2 22->26         started        signatures12 process13 signatures14 67 Tries to harvest and steal browser information (history, passwords, etc) 26->67 29 conhost.exe 26->29         started        process15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4d88b7c45db03545e9efd2f6e07d838849a43594f6a425c05189ca93317a667b/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2021-11-17 15:27:06 UTC
AV detection:
18 of 27 (66.67%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0789b4aec138cf9c5bc3b01774fc8ed075dadf40c8ecf97058c201c9de22160e
Formbook
10cb1836c9ad0c738ca0c95b748075b4c035f6edd8c07f41735a1ebc9c352eff
Formbook
67cb5ce28fc7e9a5dae6c7be6da453844762fdea43d985cfc761c1ded66487f0
Formbook
694b9ea09a47c2f24b47c60ddff0a0537828e8ba964c0ad0045b9862bce37d42
Formbook
a2d7a6453efd6b8c31af2e225ae7f93064d44fe328b5bb2e530d820e5e6ca5f8
Formbook
c63cb761da677849b8382eb1d926569f00a04d57f2c789b63e7f2eb2e368a00c
Formbook
daac858e9ca5b0c8044385c2d94cbef17c41b0bd5c569ad7e03f0a51b4caab7a
Formbook
db4d5bd36f923fdd47daf48ace971f47e9764d27a2f88241f09c754c042efc28
Formbook
f136f4f9c59c4ff2582063222c6df106a3d1e3d7d9220ff73e3cb2ec487fe1db
Formbook
+ 9'791 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:e6b3 rat spyware stealer trojan
Link:
https://tria.ge/reports/211117-syl8vsdbg5/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.xn--7tq168cfwa.xn--6qq986b3xl/e6b3/
Unpacked files
SH256 hash:
6891077ecc93aab1d366f1e92b4d0811d22f27f6763755f06b5749b25618db7e
MD5 hash:
225d20c89dd72c188271598aaac819a6
SHA1 hash:
65316b476acd42afafcb83b9b8cca255c4078bb5
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/ace874b8-a8dd-41f0-bec4-36ded5758b0a/
Parent samples :
0789b4aec138cf9c5bc3b01774fc8ed075dadf40c8ecf97058c201c9de22160e
10cb1836c9ad0c738ca0c95b748075b4c035f6edd8c07f41735a1ebc9c352eff
4d88b7c45db03545e9efd2f6e07d838849a43594f6a425c05189ca93317a667b
302c46822b5ac032941a5f71818ea42dc414cba27bee30cd589c3427144dcc6c
SH256 hash:
7cb0db2e3c74e31f4c3dfa75fd80a0f77478efa9e3f0e8ff1c55eeeecdbbb275
MD5 hash:
ae56b66ca71367f10ebf464eba02661a
SHA1 hash:
7fadcb28cd0725e3403f7baefc6597e38dbbd6a1
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/ace874b8-a8dd-41f0-bec4-36ded5758b0a/
SH256 hash:
4d88b7c45db03545e9efd2f6e07d838849a43594f6a425c05189ca93317a667b
MD5 hash:
d20d3386bc30d34e7ff53a07b6151416
SHA1 hash:
e41ec4b2f258d8a55feb8a922adc80bc25a9f1c6
Link:
https://www.unpac.me/results/ace874b8-a8dd-41f0-bec4-36ded5758b0a/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/4d88b7c45db0/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/4d88b7c45db03545e9efd2f6e07d838849a43594f6a425c05189ca93317a667b

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Typical_Malware_String_Transforms
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Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research
Rule name:Typical_Malware_String_Transforms_RID3473
Create hunting rule
Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research

File information

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

Web download

Formbook

Executable exe 4d88b7c45db03545e9efd2f6e07d838849a43594f6a425c05189ca93317a667b

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1776929/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/206920/

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