MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 de71af66a8c1bb33f1d3302d504cbd585b8ccff68d7fb3ae4cca382454b716f3. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: de71af66a8c1bb33f1d3302d504cbd585b8ccff68d7fb3ae4cca382454b716f3
SHA3-384 hash: dc73f39334e555b8d68ddf4a06c1e52ef59534a1be650dd80ffa680364a30f9c6a97f7889f1746fbbc58d30327bb9a25
SHA1 hash: 84a7d2e30ef7137687f25c6fb89feea2f05abee0
MD5 hash: 1f28d80c098c34060fa4743aeae08c20
humanhash: may-single-alabama-nineteen
File name:qM18w9jOIHl7ByY.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:578'048 bytes
First seen:2022-05-16 09:18:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:B7td0LZK405C/FRiGBuwX7pDHvWCDyBhBS2tK6U6WuqDhoM/zAWG6Q:lK0ORSwX7pDPDyBXSmK
Threatray 12'581 similar samples on MalwareBazaar
TLSH T15BC4E0AC322472EFC957C5769EA81C74AB60707B531B9217945790E9EE0DA8BCF240F3
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon c0b0c6c8a896a0c0 (20 x AgentTesla, 19 x Formbook, 12 x Loki)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
1
# of downloads :
208
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
qM18w9jOIHl7ByY.exe
Verdict:
Malicious activity
Analysis date:
2022-05-17 01:05:42 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/372d163d-283a-4473-9fa7-256cb592ec35

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/270976/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/628216f322b733139c200d32/reports/e71413b2-34d5-4399-abc9-b6994be49090/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/29224a7a-d244-4b78-9531-bfe3e66ce0f5
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/994769
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 627267 Sample: qM18w9jOIHl7ByY.exe Startdate: 16/05/2022 Architecture: WINDOWS Score: 100 29 Found malware configuration 2->29 31 Malicious sample detected (through community Yara rule) 2->31 33 Antivirus detection for URL or domain 2->33 35 9 other signatures 2->35 7 qM18w9jOIHl7ByY.exe 6 2->7         started        process3 file4 23 C:\Users\user\AppData\...\rqaFSSUpVq.exe, PE32 7->23 dropped 25 C:\Users\...\rqaFSSUpVq.exe:Zone.Identifier, ASCII 7->25 dropped 27 C:\Users\user\AppData\Local\...\tmpFAA2.tmp, XML 7->27 dropped 37 Uses schtasks.exe or at.exe to add and modify task schedules 7->37 39 Adds a directory exclusion to Windows Defender 7->39 11 powershell.exe 25 7->11         started        13 schtasks.exe 1 7->13         started        15 RegSvcs.exe 7->15         started        17 RegSvcs.exe 7->17         started        signatures5 process6 process7 19 conhost.exe 11->19         started        21 conhost.exe 13->21         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/de71af66a8c1bb33f1d3302d504cbd585b8ccff68d7fb3ae4cca382454b716f3/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-05-16 07:51:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
21 of 41 (51.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3zy26zviyg5th4otgawvatf5lbnyzt7wrv73hlsmzi4civfxc3zq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
37708373f6b4deb76e61c7a9c65200bba9f9d7ca7ebcd82d09242dd9231fa072
Formbook
6532ef52b6dc45894c81610a5f29adf7b5668da4014bd0bbe549f31657b80633
Formbook
a22ca7acaf7bfae77ff56f08b010ac618fb6ed2d6faddfc593b6f552c0e86f5b
Formbook
b8d8a8ab682956d7abd31c4fa49690ece5f9349ea7753e83243ef5a933df4684
Formbook
bec8c6b5504f6063eb944f8fc571e5f35b0ee6f6a6234dcbac63fe5479d82f13
Formbook
c1784c72cf689294811cf3f79a5b05a42207842e718bc1a3a2d40fa80d876ff8
Formbook
de36ea5b8c40db020f6292ee0ce1a0fac7b33d58bd8691e4371a657ca80d8665
Formbook
e01aab97bf2805546ef29b22bb0d9e3e2205d4a319faaf6f7f4ce966b8aaa149
Formbook
+ 12'571 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:zh4o loader rat suricata
Link:
https://tria.ge/reports/220516-k9lgpsaffq/
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 WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
155aaa60c162063f4448ea41f0cfe148bae6707c7171022b26a9d25ced103e67
MD5 hash:
40728090bfe2dbaf8b632f345953f2b7
SHA1 hash:
bbee9c875916b06c045f9651444ccbad39709c63
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/30c146bf-e4e0-4641-9ccc-30e9fdcc587f/
Parent samples :
b65471a885ff0bfdeea257dfc390024347f4cda281c48c3454cb2c17508e27a4
de71af66a8c1bb33f1d3302d504cbd585b8ccff68d7fb3ae4cca382454b716f3
SH256 hash:
3468ae461fb7bc361bc53600a9c7b4019750e822ef05d3f0c8bdbb6364e41157
MD5 hash:
e874cda59f47a28d3ef089cd349dfd04
SHA1 hash:
266fe7d7bc3dc23ab889a54e68844ce21c8d2fb7
Link:
https://www.unpac.me/results/30c146bf-e4e0-4641-9ccc-30e9fdcc587f/
SH256 hash:
875c937bfcf9fc52e3e2d106ed1c498a2eecd129ccc532dfd87cf04dd9e73498
MD5 hash:
cedfc4f73cdb7a4f2195e342b19338a6
SHA1 hash:
10869512a8371934f25a1ee56f2bf69418f1a6af
Link:
https://www.unpac.me/results/30c146bf-e4e0-4641-9ccc-30e9fdcc587f/
SH256 hash:
709fdbef8932044e42231f14888aa12b12ddc571e6daba8af86d624a39fa63bf
MD5 hash:
a7a6647650fe0204d1ab042824d638be
SHA1 hash:
a1194aba19ab6190a412073fe1918cd1b559aacf
Link:
https://www.unpac.me/results/30c146bf-e4e0-4641-9ccc-30e9fdcc587f/
SH256 hash:
de71af66a8c1bb33f1d3302d504cbd585b8ccff68d7fb3ae4cca382454b716f3
MD5 hash:
1f28d80c098c34060fa4743aeae08c20
SHA1 hash:
84a7d2e30ef7137687f25c6fb89feea2f05abee0
Link:
https://www.unpac.me/results/30c146bf-e4e0-4641-9ccc-30e9fdcc587f/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/de71af66a8c1/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/de71af66a8c1bb33f1d3302d504cbd585b8ccff68d7fb3ae4cca382454b716f3

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: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 de71af66a8c1bb33f1d3302d504cbd585b8ccff68d7fb3ae4cca382454b716f3

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/270976/

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