MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bcfc27ac62a86bb98e019ba5eb2c6032fd5a56f6aacee84974b07217c2c1fe7f. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bcfc27ac62a86bb98e019ba5eb2c6032fd5a56f6aacee84974b07217c2c1fe7f
SHA3-384 hash: 7b032905d9483bd9c2837fb862e06818cca735e57c8e1a00282413b1328f167c14151a0f455bd7c1863fc4473ff4a083
SHA1 hash: 66ba57445342ddb993dacb92b6c480601bea23a7
MD5 hash: 058b00db790aec74669bb53a0b567f89
humanhash: stairway-ceiling-seven-cat
File name:jkjn.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:282'451 bytes
First seen:2023-03-13 00:13:33 UTC
Last seen:2023-03-13 01:28:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 6144:vYa6P7wtR+RUxyzof0+B8YBxoaT8QXxHDCg4heID:vY9ktR+qykc+Qq8QXVOPV
Threatray 2'294 similar samples on MalwareBazaar
TLSH T1FC5412603DB08DB2E46206B51E3786BF8BF6911647B4BB47276422487D52A87F32F391
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter cocaman
Tags:DHL exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
291
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
jkjn.exe
Verdict:
Malicious activity
Analysis date:
2023-03-13 00:16:40 UTC
Tags:
stealer formbook trojan
Link:
https://app.any.run/tasks/e4e29d7a-35d2-4d31-b602-44233d76cee1

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/373836/
Detection(s):
SecuriteInfo.com.Trojan.Garf.Gen.6.14706.5453.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Searching for synchronization primitives
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Unauthorized injection to a recently created process
Launching the default Windows debugger (dwwin.exe)
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Сreating synchronization primitives
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/72886/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
comodo nemesis overlay packed remcos shell32.dll
Link:
https://www.filescan.io/uploads/640e6acdc3fe900de118720f/reports/1cf9f8a4-ef6b-4b18-8c4c-2ee617e6e82c/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/bcfc27ac62a86bb98e019ba5eb2c6032fd5a56f6aacee84974b07217c2c1fe7f
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3a3f5714-c3f1-4871-91b3-3b41fc31e81c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1192158
Signature
Antivirus detection for URL or domain
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 825034 Sample: jkjn.exe Startdate: 13/03/2023 Architecture: WINDOWS Score: 100 30 www.buymyenergy.com 2->30 46 Snort IDS alert for network traffic 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Antivirus detection for URL or domain 2->50 52 3 other signatures 2->52 10 jkjn.exe 19 2->10         started        signatures3 process4 file5 26 C:\Users\user\AppData\...\xgyveslaio.exe, PE32 10->26 dropped 28 C:\Users\user\AppData\Local\...\nshBC5A.tmp, BALANCE 10->28 dropped 13 xgyveslaio.exe 10->13         started        process6 signatures7 66 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 13->66 68 Maps a DLL or memory area into another process 13->68 16 xgyveslaio.exe 13->16         started        process8 signatures9 38 Modifies the context of a thread in another process (thread injection) 16->38 40 Maps a DLL or memory area into another process 16->40 42 Sample uses process hollowing technique 16->42 44 Queues an APC in another process (thread injection) 16->44 19 explorer.exe 2 1 16->19 injected process10 dnsIp11 32 bohndigitaltech.com 162.241.24.110, 49705, 49706, 80 UNIFIEDLAYER-AS-1US United States 19->32 34 kunimi.org 219.94.129.181, 49699, 49700, 80 SAKURA-CSAKURAInternetIncJP Japan 19->34 36 14 other IPs or domains 19->36 54 System process connects to network (likely due to code injection or exploit) 19->54 56 Performs DNS queries to domains with low reputation 19->56 23 cscript.exe 13 19->23         started        signatures12 process13 signatures14 58 Tries to steal Mail credentials (via file / registry access) 23->58 60 Tries to harvest and steal browser information (history, passwords, etc) 23->60 62 Modifies the context of a thread in another process (thread injection) 23->62 64 Maps a DLL or memory area into another process 23->64
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bcfc27ac62a86bb98e019ba5eb2c6032fd5a56f6aacee84974b07217c2c1fe7f/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2023-03-13 00:13:44 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xt6cpldcvbv3tdqbtos6wldagl6vuvxwvlhoqsluwbzbpqwb7z7q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
128505a47c9f43ff7ee232ae8e617756b0fc1bef2548dd893245514008dfbe58
Formbook
83e90e75eb49fccf0f69331483311ce57f89b33824fbec54e773af910da239a8
Formbook
9ada0ca121fe2b402b0da1728cd9f1fbb36d61a62fd40bbe8428756c329e04e8
Formbook
bee95f90676280bca3212cc77b2dbd497f590cd560ce3005f2998fa324698427
Formbook
c448049c359c9ada55dbdefbb772020aa3962804d485ccf52adefb3a2030e3fb
Formbook
cc83e0a51f3dcd04a4c9b1a2ba3049227459cac541da52b518ee5ebcfbed4796
Formbook
cef638f9ba310dfd22719a682dfe6ad1a07c06b122b54127e2a6257e9acc7752
Formbook
e904274bd2e5d919c63c6db8c82f908abc10d65fdba772596e2953ab708b1726
Formbook
f3197cca74f60c552d9d3b4d04d99996ceca8c8dc6ad845a468c10c65062a0fc
Formbook
+ 2'284 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/230313-ajb58saa2z/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Unpacked files
SH256 hash:
f8816454df8c7a338c47115575d1f3e1a952c8b6db0f57e46fa4381be9b16911
MD5 hash:
9256107151a9881eeb2524a18f3beae2
SHA1 hash:
342ea33bc8429ff1a710f9d4b1ada72fd1bde261
Detections:
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/c61804b3-8365-46ec-b109-9839d5b89f20/
Parent samples :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 hash:
e04ae3656e18bbe8a8b43197f9cd86f672d7bb265446fe1fea60ac4424b9ac1e
MD5 hash:
ec97b39b3847b7636b6ff582f06c4b35
SHA1 hash:
3ec99e698e9659f9c398bfb7cf064e4af16efadb
Link:
https://www.unpac.me/results/c61804b3-8365-46ec-b109-9839d5b89f20/
SH256 hash:
2eeb3742f02f8e9183841bdcf9bb092f221c836b86d10a75ed92e41b2b7d3c03
MD5 hash:
cf2e492eda066ef1be76d8ad49ebf6bd
SHA1 hash:
8e908f7d6aa62c9182f89aa26fd546c205ad0747
Link:
https://www.unpac.me/results/c61804b3-8365-46ec-b109-9839d5b89f20/
SH256 hash:
bcfc27ac62a86bb98e019ba5eb2c6032fd5a56f6aacee84974b07217c2c1fe7f
MD5 hash:
058b00db790aec74669bb53a0b567f89
SHA1 hash:
66ba57445342ddb993dacb92b6c480601bea23a7
Link:
https://www.unpac.me/results/c61804b3-8365-46ec-b109-9839d5b89f20/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bcfc27ac62a8/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/bcfc27ac62a86bb98e019ba5eb2c6032fd5a56f6aacee84974b07217c2c1fe7f

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:azov_Dropped
Create hunting rule
Author:Potatech
Description:Azov Detection
Rule name:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Malspam

Formbook

rar f65ab33fe08af05551a5e134fd1111af63b4c449cac0157dbe07232f629e835b

Formbook

Executable exe bcfc27ac62a86bb98e019ba5eb2c6032fd5a56f6aacee84974b07217c2c1fe7f

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 f65ab33fe08af05551a5e134fd1111af63b4c449cac0157dbe07232f629e835b
Cape
Cape
https://www.capesandbox.com/analysis/373836/
  
Dropped by
MD5 bb6ac824263570145fef0c76a1ec58c4

Comments