MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 13c2ff62d1e29d6e88c828851f842b17acb6293da92bdf5223e87a67bf00ed31. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
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SHA256 hash: 13c2ff62d1e29d6e88c828851f842b17acb6293da92bdf5223e87a67bf00ed31
SHA3-384 hash: 09a0565f9cbc7e4a23a36b87f4783ed0582d3e79c3f3e6963b8fb7080cff26d55a2e3e96f6807bf91688f9a785b933c6
SHA1 hash: 2488a833ee33ea4ce3ff0e5e7615e35d647816e2
MD5 hash: e2e027360aa11a532949fb6c013009d5
humanhash: mirror-florida-alabama-quebec
File name:DOC.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:474'112 bytes
First seen:2021-09-16 04:49:38 UTC
Last seen:2021-09-17 07:16:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'638 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 12288:IlLTGNWHCM2K4CC3/TEggDN1BZkW0TJkgig+DAkmEYd:INT43CcLEDBZKJW
Threatray 9'326 similar samples on MalwareBazaar
TLSH T18CA4CF343AEA911AF173EFB94AE475969A7EF763360BA45D005103CA0A23F80DDD153E
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
6
# of downloads :
247
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
DOC.exe
Verdict:
Malicious activity
Analysis date:
2021-09-16 04:50:45 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/9d031d35-5703-4404-9467-4f46b60814ca

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/188308/
Detection(s):
SecuriteInfo.com.W32.MSIL_Kryptik.FNY.genEldorado.4244.30876.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm obfuscated packed
Link:
https://www.filescan.io/uploads/61751f13db358dd15ed9265a/reports/dbb89efe-49ef-4194-a9bf-fea5605db613/overview
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0f844a4e-f409-45de-8500-fdf9c284d356
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/851843
Signature
.NET source code contains potential unpacker
.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
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
Self deletion via cmd delete
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 sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 484274 Sample: DOC.exe Startdate: 16/09/2021 Architecture: WINDOWS Score: 100 31 www.rnchaincvkbip.xyz 2->31 39 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 9 other signatures 2->45 11 DOC.exe 3 2->11         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\DOC.exe.log, ASCII 11->29 dropped 57 Tries to detect virtualization through RDTSC time measurements 11->57 59 Injects a PE file into a foreign processes 11->59 15 DOC.exe 11->15         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 15->61 63 Maps a DLL or memory area into another process 15->63 65 Sample uses process hollowing technique 15->65 67 Queues an APC in another process (thread injection) 15->67 18 explorer.exe 15->18 injected process9 dnsIp10 33 fffddfrfqffrtgthhhbhffgfr.com 81.169.145.93, 49839, 80 STRATOSTRATOAGDE Germany 18->33 35 www.hotel-balzac.paris 213.186.33.5, 49831, 80 OVHFR France 18->35 37 9 other IPs or domains 18->37 47 System process connects to network (likely due to code injection or exploit) 18->47 22 msdt.exe 18->22         started        signatures11 process12 signatures13 49 Self deletion via cmd delete 22->49 51 Modifies the context of a thread in another process (thread injection) 22->51 53 Maps a DLL or memory area into another process 22->53 55 Tries to detect virtualization through RDTSC time measurements 22->55 25 cmd.exe 1 22->25         started        process14 process15 27 conhost.exe 25->27         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/13c2ff62d1e29d6e88c828851f842b17acb6293da92bdf5223e87a67bf00ed31/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2021-09-16 04:50:09 UTC
AV detection:
25 of 28 (89.29%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=cpbp6ywr4kow5cgifccr7bblc6wlmkj5vev56urd5b5gppya5uyq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
39c5b29df15e13a18cbc4b77a44208aa927af8851555a4d220d8af0be7aeb235
Formbook
3f383c683795d277510e0fb4c806ae17bfb33dd6ff875b66c159068e58c28818
Formbook
4611b180e4173882dba3e08aaa44ae28ce14d2f2709b2017082d57bcdecfb352
Formbook
4b9ec9143ae2471c8cf540f5e3815c4ca4bb5e073d5c45e6bd934cc0350e8546
Formbook
7deecd8502e99ced6aec8588840f7e972a3b030c19e0e88ef94ec3a9d2ababc9
Formbook
bb60b98852cad89fe450ec8486cee96bb6932b29c692f97d5b7ed7936556845f
Formbook
bb7d986712c63235f866f11ebc85ac60c360676e0576a075f16c16f679c31c7b
Formbook
cfdb27a9ff39bd1aa5a0a43fe6e272c269a311f5748d8a13b2e705f7d66f16bd
Formbook
+ 9'316 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:n58i loader rat
Link:
https://tria.ge/reports/210916-ff96racab2/
Behaviour
Gathers network information
Modifies registry class
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
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.nordicbatterybelt.net/n58i/
Unpacked files
SH256 hash:
6c13cdc5d4408ccd7c0c31a6565a6e1458db6b967b1b4c604aa08a0c82d4ecb1
MD5 hash:
d9260295cce263a3073f916ebca034ae
SHA1 hash:
7cecebd83e8243080168ac5e6e784780a2b9e1c1
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/469cd03f-ec81-4198-bbcf-75a4f3f997ee/
Parent samples :
cfdb27a9ff39bd1aa5a0a43fe6e272c269a311f5748d8a13b2e705f7d66f16bd
3f383c683795d277510e0fb4c806ae17bfb33dd6ff875b66c159068e58c28818
4b9ec9143ae2471c8cf540f5e3815c4ca4bb5e073d5c45e6bd934cc0350e8546
13c2ff62d1e29d6e88c828851f842b17acb6293da92bdf5223e87a67bf00ed31
b092672d7f36d3deaab664c0a562b055f9cee3f247328e639aca58f025f979ca
SH256 hash:
ad4a7895d529d5164302bb88596964ab42ff125bf0f5544418c80b6d438cb587
MD5 hash:
43ababb6b0a02907aad43084f12b10d9
SHA1 hash:
b60ba705891d5a666d64300181b475a46714ffa8
Link:
https://www.unpac.me/results/469cd03f-ec81-4198-bbcf-75a4f3f997ee/
SH256 hash:
c91ad55bd80be2f89ee242e200d0d5f7e3c7af632b49df832af8ca09b4111baa
MD5 hash:
e3ac4e5297e81d48704d717cf492aecf
SHA1 hash:
558df25a894994b5551a4cc0907ed9fd8495e29a
Link:
https://www.unpac.me/results/469cd03f-ec81-4198-bbcf-75a4f3f997ee/
SH256 hash:
13c2ff62d1e29d6e88c828851f842b17acb6293da92bdf5223e87a67bf00ed31
MD5 hash:
e2e027360aa11a532949fb6c013009d5
SHA1 hash:
2488a833ee33ea4ce3ff0e5e7615e35d647816e2
Link:
https://www.unpac.me/results/469cd03f-ec81-4198-bbcf-75a4f3f997ee/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
Link:
https://yomi.yoroi.company/submissions/13c2ff62d1e29d6e88c828851f842b17acb6293da92bdf5223e87a67bf00ed31

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: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.

Malspam

Formbook

Executable exe 13c2ff62d1e29d6e88c828851f842b17acb6293da92bdf5223e87a67bf00ed31

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/188308/

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