MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4bd4b9f79c629ce5f602b3cc8bacefb6c3779498d66b946be9da734111659f23. 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 3 File information Comments
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SHA256 hash: 4bd4b9f79c629ce5f602b3cc8bacefb6c3779498d66b946be9da734111659f23
SHA3-384 hash: 0b0eda5a1520c168afc9c6916ad7f8ada9330cd8624ea35fcf143bac500023dcb0e0b888c639d26656f0c04b7396f466
SHA1 hash: 365f44bc5922a304fa8c02a8376dd8f531da6072
MD5 hash: 47f7e7a32e8ee493383a5381731a6923
humanhash: green-william-wyoming-sixteen
File name:Inquiry.PDF.exe
Download: download sample
Signature Formbook
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File size:633'344 bytes
First seen:2021-10-13 01:16:49 UTC
Last seen:2021-10-13 01:59:41 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 12288:MCftTR+enVzps09iJW5LGcxP/CvB6V7XN1jDUXAP3rSkIsSB:X9Ve25p3Zvj5DfGB
Threatray 10'378 similar samples on MalwareBazaar
TLSH T1B2D4BF4E93214393F1182B74DA7D7E1942301C7C78D2EBD8B9A5766BEDE1BA6143302B
File icon (PE):PE icon
dhash icon 6dd2d312dbc8cc49 (94 x Formbook, 5 x AgentTesla)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
244
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Inquiry.PDF.exe
Verdict:
Malicious activity
Analysis date:
2021-10-13 01:20:38 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/28d4b9a6-bb35-4ba1-a964-972159106ddf

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/197056/
Detection(s):
SecuriteInfo.com.Trojan.DownLoader43.42926.3841.11330.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:
Suspicious
Threat level:
  5/10
Confidence:
80%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/616633921c2d58ba7403fb67/reports/af7448eb-15ca-43a5-9dea-212156ec77e9/overview
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/141112d1-082e-42b4-8dc0-ba7347a0d983
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/869188
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for domain / URL
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: Suspicious Double Extension
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
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 501612 Sample: Inquiry.PDF.exe Startdate: 13/10/2021 Architecture: WINDOWS Score: 100 35 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->35 37 Multi AV Scanner detection for domain / URL 2->37 39 Found malware configuration 2->39 41 10 other signatures 2->41 10 Inquiry.PDF.exe 3 2->10         started        process3 signatures4 51 Tries to detect virtualization through RDTSC time measurements 10->51 53 Injects a PE file into a foreign processes 10->53 13 Inquiry.PDF.exe 10->13         started        process5 signatures6 55 Modifies the context of a thread in another process (thread injection) 13->55 57 Maps a DLL or memory area into another process 13->57 59 Sample uses process hollowing technique 13->59 61 Queues an APC in another process (thread injection) 13->61 16 explorer.exe 13->16 injected process7 dnsIp8 27 www.cryptoinvestyl.com 213.186.33.5, 49845, 80 OVHFR France 16->27 29 www.knowtecnology.com 16->29 31 2 other IPs or domains 16->31 33 System process connects to network (likely due to code injection or exploit) 16->33 20 colorcpl.exe 16->20         started        signatures9 process10 signatures11 43 Self deletion via cmd delete 20->43 45 Modifies the context of a thread in another process (thread injection) 20->45 47 Maps a DLL or memory area into another process 20->47 49 Tries to detect virtualization through RDTSC time measurements 20->49 23 cmd.exe 1 20->23         started        process12 process13 25 conhost.exe 23->25         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4bd4b9f79c629ce5f602b3cc8bacefb6c3779498d66b946be9da734111659f23/
Threat name:
ByteCode-MSIL.Infostealer.Generic
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Status:
Suspicious
First seen:
2021-10-13 01:17:10 UTC
AV detection:
9 of 40 (22.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jpklt544mkool5qcwpgixlhpw3bxpfey2zvzi27j3jzucelft4rq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
336a2648e0811ebd11a94bb59c5cd5ea06ff48485f734ce149a3f9f9a7e0c7f4
Formbook
5fd22c8bf1e7e06ccaa6ebc23410086fe0e3bc30b1613cd6ee734f280c0d6979
Formbook
6d725aa4c3dd38bc7f924af4891b82a9c993e2db67765c72be42778a9c1b561a
Formbook
7c0ab1d837684e8d37e75578f4821e25d7729cb9d3739f397cabbb9c95f2ddae
Formbook
7c7e7d1ad3f8afd0ffcba163bac7c1df9ceb8202a96a61b30b697569e00051b0
Formbook
88ee9016160ae1abb6391106ed1c03782a7bd8b157272c7684aafb1c22b3e06e
Formbook
c63cb761da677849b8382eb1d926569f00a04d57f2c789b63e7f2eb2e368a00c
Formbook
d16da4e6a63f26601dd3c961f31708db79be1aead7cf3834fafa47095b1a45a6
Formbook
fedeb19031bcc0941b0943dd3ed45ee6095b8c489c072c85e513b414abf8acf5
Formbook
+ 10'368 additional samples on MalwareBazaar
Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:useb rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/211013-bnd13adbhr/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.sale-stihl.com/useb/
Unpacked files
SH256 hash:
3a64128cc4ac02ee96dec8a6aea77662efd61010d122785153c20bdbcd28e245
MD5 hash:
30183ef9586be22140984d588dac1cdc
SHA1 hash:
4d7f001ce583b6204fe00d791327e681c4fda302
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/222415f8-1b31-4437-bc3b-6981673e2a66/
Parent samples :
88ee9016160ae1abb6391106ed1c03782a7bd8b157272c7684aafb1c22b3e06e
4bd4b9f79c629ce5f602b3cc8bacefb6c3779498d66b946be9da734111659f23
efbfd17d24ef5ee8e54a74ef9527396d511bcdade1826a1c08ee4f2603ec798e
SH256 hash:
cefe87a0de015dc44dc1086458460be07edba8d9f7211c4bed8a11809d520a72
MD5 hash:
0403b7f4765e08a2f74690caf1a82990
SHA1 hash:
b0e9f69b8c337b605edecdcc3345c6f0045ee04e
Link:
https://www.unpac.me/results/222415f8-1b31-4437-bc3b-6981673e2a66/
SH256 hash:
4a88285ba05d16b252f159b9605fe67dedddf8b92e35f76f363e6097121b1cf9
MD5 hash:
7ad407166913dd24561e565456cd65e0
SHA1 hash:
9e428ce4f1944cf7910302c8c3782e614606924a
Link:
https://www.unpac.me/results/222415f8-1b31-4437-bc3b-6981673e2a66/
SH256 hash:
eda4d687b865aed0078ab87078de7d9722888b2d2af71c6fc0dcdc986ffb7567
MD5 hash:
12cf5402be16590c300b442a66e9ebc1
SHA1 hash:
0ea28394d301ca1ce840f039d2da62a5ce6d9334
Link:
https://www.unpac.me/results/222415f8-1b31-4437-bc3b-6981673e2a66/
SH256 hash:
4bd4b9f79c629ce5f602b3cc8bacefb6c3779498d66b946be9da734111659f23
MD5 hash:
47f7e7a32e8ee493383a5381731a6923
SHA1 hash:
365f44bc5922a304fa8c02a8376dd8f531da6072
Link:
https://www.unpac.me/results/222415f8-1b31-4437-bc3b-6981673e2a66/
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/4bd4b9f79c629ce5f602b3cc8bacefb6c3779498d66b946be9da734111659f23

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
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Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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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 4bd4b9f79c629ce5f602b3cc8bacefb6c3779498d66b946be9da734111659f23

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/197056/

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