MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8b4049ea3937e355ad9a551795afcb621fb56991ffc6f1db746861acfd7d6a46. 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: 11


Intelligence 11 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8b4049ea3937e355ad9a551795afcb621fb56991ffc6f1db746861acfd7d6a46
SHA3-384 hash: 800668a3ba8d9d243c982f23e9c075f42c7daf061ff9c8c877a850926f0297ccb6394e671aa141e3e2b10d50940dff0f
SHA1 hash: f063e726b27fa0a1bd4fdbae0f6b1f0060186915
MD5 hash: 7c3a7d5502c8be0aa5a9d0bc4a4020e7
humanhash: spaghetti-undress-failed-louisiana
File name:0097890099899.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:262'804 bytes
First seen:2021-08-24 11:41:03 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 439ff53323e9506db8654c0d8af9cf37 (5 x Formbook, 4 x NanoCore, 4 x Loki)
ssdeep 6144:tEVD95sS/ebxL5RVbGbz7ans9bpR4HCWIjDkqREdoL:tCssebxLVbqz7QgbBWsHQoL
Threatray 8'394 similar samples on MalwareBazaar
TLSH T1D544010278964A5AC6C977FC297195437A222CB10A65C0CFD8F63E22F4315B3EED127E
dhash icon 174f4559191b1b13 (81 x AgentTesla, 68 x Formbook, 34 x SnakeKeylogger)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
343
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
0097890099899.exe
Verdict:
Malicious activity
Analysis date:
2021-08-24 12:24:01 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/a0bfed15-aed1-4c6f-9f19-8be7f41a414a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/181855/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Launching a process
Launching cmd.exe command interpreter
Sending a UDP request
DNS request
Connection attempt
Sending an HTTP GET request
Unauthorized injection to a system process
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/10730f88-ef86-417f-ae60-c71de1c6dd9c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/838390
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 470827 Sample: 0097890099899.exe Startdate: 24/08/2021 Architecture: WINDOWS Score: 100 32 www.jellenllc.com 2->32 34 www.byritcn.com 2->34 36 domains.vpsiteserver03.com 2->36 44 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->44 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 5 other signatures 2->50 11 0097890099899.exe 1 2->11         started        signatures3 process4 signatures5 60 Maps a DLL or memory area into another process 11->60 62 Tries to detect virtualization through RDTSC time measurements 11->62 14 0097890099899.exe 11->14         started        17 conhost.exe 11->17         started        process6 signatures7 64 Modifies the context of a thread in another process (thread injection) 14->64 66 Maps a DLL or memory area into another process 14->66 68 Sample uses process hollowing technique 14->68 70 Queues an APC in another process (thread injection) 14->70 19 explorer.exe 14->19 injected process8 dnsIp9 38 freedownloadbiz.info 188.72.236.136, 49729, 80 WEBZILLANL Netherlands 19->38 40 xn--marketingrevolucin-61b.com 192.254.187.234, 49735, 80 UNIFIEDLAYER-AS-1US United States 19->40 42 12 other IPs or domains 19->42 52 System process connects to network (likely due to code injection or exploit) 19->52 23 colorcpl.exe 19->23         started        26 autochk.exe 19->26         started        signatures10 process11 signatures12 54 Modifies the context of a thread in another process (thread injection) 23->54 56 Maps a DLL or memory area into another process 23->56 58 Tries to detect virtualization through RDTSC time measurements 23->58 28 cmd.exe 1 23->28         started        process13 process14 30 conhost.exe 28->30         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8b4049ea3937e355ad9a551795afcb621fb56991ffc6f1db746861acfd7d6a46/
Threat name:
Win32.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2021-08-24 08:49:47 UTC
AV detection:
16 of 28 (57.14%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rnaet2rzg7rvllm2kulzll6lmip3k2mr77dpdw3unbq2z7l5njda._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
300dd45e5b41e94c62a67a53d6ba458816711b5168e91d7a5b04493bd36c5f0d
Formbook
385f5ca91b0a230a14f5d32c79d061a3af0f5533923ad62e1982d1327ed086a4
Formbook
3afb8f6f86741e036ed7ee941f4875344c2b384d6e9d21c85755bfbce63ee473
Formbook
3f9a8485314c2b666caf0a1a729a96cb974780f331ea9baa0c03e7f02035cf05
Formbook
5b7a858563dfd290658d183a0d1c101e39a9dda3327e84c11ef12bc873cb98b9
Formbook
93f0775c5a5512759f85db7b3d1c4b3ee7049369cd0dcd1d4f778626621bfa0c
Formbook
a7c09392aa26962b20d2fc58398b6425ebd062187b2923fbbb7b1866523f1e26
Formbook
abb1db77386f0eb3cd2c68603ee8817d6d1015287422182845345dad70503564
Formbook
b5e3426a888ddb5751f9802093f1bd10ec696b2994bee03b99b7ba2b4f21a57d
Formbook
ebe1f420ea3fcef5b426cf6458d23984e12c4ceb5983571699f60aaa963b159a
Formbook
+ 8'384 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:b6cu loader rat suricata
Link:
https://tria.ge/reports/210824-hbcncrawwa/
Behaviour
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.xn--marketingrevolucin-61b.com/b6cu/
Unpacked files
SH256 hash:
68a49f8d55aecf2551c16097b302614bcd617a3d1b565f37cd45a92993d0f065
MD5 hash:
1bfe6840b1414ec3315aa2735431fb71
SHA1 hash:
f6e382e2d534b5edc965d5053b6a4c63488e4c43
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/04e87c87-31e9-4fa2-a40c-9db420ba5fee/
Parent samples :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 hash:
8b4049ea3937e355ad9a551795afcb621fb56991ffc6f1db746861acfd7d6a46
MD5 hash:
7c3a7d5502c8be0aa5a9d0bc4a4020e7
SHA1 hash:
f063e726b27fa0a1bd4fdbae0f6b1f0060186915
Link:
https://www.unpac.me/results/04e87c87-31e9-4fa2-a40c-9db420ba5fee/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.13
Link:
https://yomi.yoroi.company/submissions/8b4049ea3937e355ad9a551795afcb621fb56991ffc6f1db746861acfd7d6a46

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

File information

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

Malspam

Formbook

Executable exe 8b4049ea3937e355ad9a551795afcb621fb56991ffc6f1db746861acfd7d6a46

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/181855/

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