MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8758c8727fc2f359daee8f056460f3353bd807cc591000570b97358b2c914c96. 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: 14


Intelligence 14 IOCs YARA 4 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8758c8727fc2f359daee8f056460f3353bd807cc591000570b97358b2c914c96
SHA3-384 hash: 6a0937cd5f05ee3a4c101f9f00cc88669406e4b323106098bc253e9f9f766cbcaa13eeb4930d70f95b27258139fe6e13
SHA1 hash: 4b49ee0b3f98dc9fc024c390024987cc0b41c6f7
MD5 hash: b172b8e0bc46d457b39e4ac74e76e326
humanhash: king-london-early-finch
File name:b172b8e0bc46d457b39e4ac74e76e326
Download: download sample
Signature Formbook
Create hunting rule
File size:912'384 bytes
First seen:2021-10-07 12:44:10 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 6144:FDIhf6UqmXpPATMGrg+NdoMEXFDx3qPUdPLywvydHDLwRcz2vdFW7vyRFfGtzaqo:dLU/XpYNg+NypJHmDicCuyR2zaqo
Threatray 10'003 similar samples on MalwareBazaar
TLSH T1F815305363AC8ED4C06792B4DFC0C4B96C19D9EE421A53B4AB12AB64F75FC031E6A473
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
171
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SCAN COPY.xlsx
Verdict:
Malicious activity
Analysis date:
2021-10-07 12:02:37 UTC
Tags:
encrypted opendir exploit CVE-2017-11882 loader trojan formbook stealer
Link:
https://app.any.run/tasks/89cb348e-e172-4454-b18d-f21abda2149b

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/195849/
Detection(s):
SecuriteInfo.com.Variant.Strictor.256637.18899.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Launching cmd.exe command interpreter
Deleting a system file
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/615eebd0e3d213d202b9df4b/reports/615010b4-c772-40bd-9fb5-01a5b3d48689/overview
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9808f3ee-3987-45e1-abe9-0f515e874673
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/866382
Signature
.NET source code contains very large strings
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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)
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
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Uses netstat to query active network connections and open ports
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 498811 Sample: iWTgBKOolS Startdate: 07/10/2021 Architecture: WINDOWS Score: 100 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Antivirus detection for URL or domain 2->48 50 7 other signatures 2->50 10 iWTgBKOolS.exe 6 2->10         started        process3 file4 32 C:\Users\user\AppData\...\ULrIQGVZEwZdFg.exe, PE32 10->32 dropped 34 C:\Users\user\AppData\Local\...\tmp19F3.tmp, XML 10->34 dropped 36 C:\Users\user\AppData\...\iWTgBKOolS.exe.log, ASCII 10->36 dropped 64 Uses schtasks.exe or at.exe to add and modify task schedules 10->64 66 Writes to foreign memory regions 10->66 68 Injects a PE file into a foreign processes 10->68 14 MSBuild.exe 10->14         started        17 schtasks.exe 1 10->17         started        signatures5 process6 signatures7 70 Modifies the context of a thread in another process (thread injection) 14->70 72 Maps a DLL or memory area into another process 14->72 74 Sample uses process hollowing technique 14->74 76 2 other signatures 14->76 19 explorer.exe 14->19 injected 23 conhost.exe 17->23         started        process8 dnsIp9 38 upvg95.g.ngxfence.org 170.33.9.83, 49825, 80 ASEPL-AS-APAlibabacomSingaporeE-CommercePrivateLimited Singapore 19->38 40 www.sleekrevenge.com 19->40 42 2 other IPs or domains 19->42 52 System process connects to network (likely due to code injection or exploit) 19->52 54 Performs DNS queries to domains with low reputation 19->54 56 Uses netstat to query active network connections and open ports 19->56 25 NETSTAT.EXE 19->25         started        signatures10 process11 signatures12 58 Modifies the context of a thread in another process (thread injection) 25->58 60 Maps a DLL or memory area into another process 25->60 62 Tries to detect virtualization through RDTSC time measurements 25->62 28 cmd.exe 1 25->28         started        process13 process14 30 conhost.exe 28->30         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8758c8727fc2f359daee8f056460f3353bd807cc591000570b97358b2c914c96/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-10-07 12:45:11 UTC
AV detection:
20 of 27 (74.07%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=q5mmq4t7ylzvtwxor4cwiyhtgu55qb6mleiaavyls42ywlerjsla._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
3f1f0dce8eb0b1a98912a8c08208c5d4425e013e20719aca1d14ca4924f841c6
Formbook
55ed65b48cb66c266459b4bbe35faecbc6c7737a1d89d9df884152c292b4b762
Formbook
5fd22c8bf1e7e06ccaa6ebc23410086fe0e3bc30b1613cd6ee734f280c0d6979
Formbook
6d725aa4c3dd38bc7f924af4891b82a9c993e2db67765c72be42778a9c1b561a
Formbook
7249d67d49a862e577120d3125e33566c61241969b4f48d701de97a5fe0abc04
Formbook
cb1140dd7751382a2d56c59755a2ff38b239805148af2d108cf4f1399ca0f753
Formbook
d153e8b542963a9c9ae3fa96421f2ec2c5779759d0a086f3545b7e9c91074476
Formbook
d733031bac48ebb66a6a12347c3fa50852da1023486f591679043ef07c9cad7c
Formbook
dcee55c9896715272cfd344a7a62fe6c5dbe0e61d7d8548beeda46c15bd8e07c
Formbook
+ 9'993 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:rf3t rat spyware stealer trojan
Link:
https://tria.ge/reports/211007-py23jacda4/
Behaviour
Creates scheduled task(s)
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
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.logjed063.xyz/rf3t/
Unpacked files
SH256 hash:
ed390c88a5380c622d6e91cee3e851a7b0a1e5bfccdd3fc1310bd55f412178f3
MD5 hash:
c49d40107c34a4169b3bb7e2d25edf77
SHA1 hash:
8764208918c33670f3eaa2e2f9f54eb1b55f48f8
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/3de1d688-3af2-468c-af97-3ddad36db7d9/
Parent samples :
d153e8b542963a9c9ae3fa96421f2ec2c5779759d0a086f3545b7e9c91074476
3f1f0dce8eb0b1a98912a8c08208c5d4425e013e20719aca1d14ca4924f841c6
d733031bac48ebb66a6a12347c3fa50852da1023486f591679043ef07c9cad7c
8758c8727fc2f359daee8f056460f3353bd807cc591000570b97358b2c914c96
32b793817b07a78490aa882218fb2880723c7ba23381545a2d7facfe0cacf4c1
SH256 hash:
509e7c2bcfcfbc070afbdd387d8c51cc21b2939a6d878ce1de62b032b59b0848
MD5 hash:
03f4e2573930f3c7e027de5f39eb62e6
SHA1 hash:
eeb1dc581060be49204044a0dd3d840aedbcf655
Link:
https://www.unpac.me/results/3de1d688-3af2-468c-af97-3ddad36db7d9/
SH256 hash:
43e38f251dbca9aa20f3470167e5427a7e7a7cdcd25f0b6b045ae8577cd3e345
MD5 hash:
f62ab5d3528d5a3b9e270ea1f9347868
SHA1 hash:
6a74e87711c615adbd9145f829a33f55b7e42dd6
Link:
https://www.unpac.me/results/3de1d688-3af2-468c-af97-3ddad36db7d9/
SH256 hash:
8758c8727fc2f359daee8f056460f3353bd807cc591000570b97358b2c914c96
MD5 hash:
b172b8e0bc46d457b39e4ac74e76e326
SHA1 hash:
4b49ee0b3f98dc9fc024c390024987cc0b41c6f7
Link:
https://www.unpac.me/results/3de1d688-3af2-468c-af97-3ddad36db7d9/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/8758c8727fc2/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/8758c8727fc2f359daee8f056460f3353bd807cc591000570b97358b2c914c96

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

File information

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

Web download

Formbook

Executable exe 8758c8727fc2f359daee8f056460f3353bd807cc591000570b97358b2c914c96

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/195849/
  
URLhaus
https://urlhaus.abuse.ch/url/1659585/

Comments


Avatar
zbet commented on 2021-10-07 12:44:11 UTC

url : hxxp://192.3.222.133/formbook/BBN.exe