MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c8ff043caee4e9cc889d1b7f8149e5c59ec43d2d01edeb49cb40fe1fd09a233a. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c8ff043caee4e9cc889d1b7f8149e5c59ec43d2d01edeb49cb40fe1fd09a233a
SHA3-384 hash: 9a2ca6d3107940c64530e89dbe23f35f0a22f3d6e3b915df4ea0b199c1c69ecd7147923f23f1f0c5f023c07fa5110c41
SHA1 hash: 31280391b1a399a3bc1c8ea0f4fb27e2dc9e56a0
MD5 hash: b5a3a16559c14a2db6837fb8792134ae
humanhash: hydrogen-network-alpha-echo
File name:Payment_Advice.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:881'664 bytes
First seen:2021-08-03 20:30:04 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'664 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:pWF05yIQeYdWmi3xn+3O/Q6l0gtdc/yrWKF9eNNIp:NsdVi3xn2O466gtnfrejIp
TLSH T1D0159B6A278A4527F37A81707653ECF5F650BE82AA009D0B82C67F8335275C2EEC5C5D
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
191
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Payment_Advice.exe
Verdict:
Malicious activity
Analysis date:
2021-08-03 20:32:37 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/2241f6e1-99b0-4734-9514-d6e6662449ff

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/176189/
Detection(s):
SecuriteInfo.com.Trojan.Win32.Save.a.7424.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Launching a process
Creating a file
Launching cmd.exe command interpreter
DNS request
Connection attempt
Sending an HTTP GET request
Forced shutdown of a system process
Unauthorized injection to a system process
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0f25cd29-c585-4197-b039-715d9e4cfde9
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/826523
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Allocates memory in foreign processes
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
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
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 458954 Sample: Payment_Advice.exe Startdate: 03/08/2021 Architecture: WINDOWS Score: 100 33 www.quickoprintnv.com 2->33 35 www.missabrams.com 2->35 43 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->43 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 9 other signatures 2->49 9 Payment_Advice.exe 3 2->9         started        signatures3 process4 file5 31 C:\Users\user\...\Payment_Advice.exe.log, ASCII 9->31 dropped 53 Writes to foreign memory regions 9->53 55 Allocates memory in foreign processes 9->55 57 Injects a PE file into a foreign processes 9->57 13 RegSvcs.exe 9->13         started        16 RegSvcs.exe 9->16         started        18 RegSvcs.exe 9->18         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 13->65 67 Maps a DLL or memory area into another process 13->67 69 Sample uses process hollowing technique 13->69 71 Queues an APC in another process (thread injection) 13->71 20 explorer.exe 13->20 injected 73 Tries to detect virtualization through RDTSC time measurements 16->73 24 cmd.exe 1 16->24         started        process9 dnsIp10 37 www.dipmarketingagency.com 173.254.28.149, 49736, 80 UNIFIEDLAYER-AS-1US United States 20->37 39 www.firsttimephysics.com 208.91.197.27, 49739, 80 CONFLUENCE-NETWORK-INCVG Virgin Islands (BRITISH) 20->39 41 4 other IPs or domains 20->41 51 System process connects to network (likely due to code injection or exploit) 20->51 26 colorcpl.exe 20->26         started        29 conhost.exe 24->29         started        signatures11 process12 signatures13 59 Modifies the context of a thread in another process (thread injection) 26->59 61 Maps a DLL or memory area into another process 26->61 63 Tries to detect virtualization through RDTSC time measurements 26->63
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c8ff043caee4e9cc889d1b7f8149e5c59ec43d2d01edeb49cb40fe1fd09a233a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-07-29 00:53:31 UTC
AV detection:
24 of 28 (85.71%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=zd7qipfo4tu4zce5dn7ycspfywpmipjnahw6wsolid7b7ue2em5a._file
Verdict:
unknown
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader loader rat suricata
Link:
https://tria.ge/reports/210803-595hglxslx/
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 UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.illoftapartments.com/uecu/
Unpacked files
SH256 hash:
2de6939257996ad34dbb3c2fda787e831a02985427b2d3433f2ccc2e69f387e2
MD5 hash:
1cc5cc3b29e823de48dbbaf8a170ad7d
SHA1 hash:
fdbf257811d9bda46f950d3c9b139b6b295ab5a8
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/c1773db7-34f2-41b4-a290-500e00d5ee23/
Parent samples :
cb8f5442f14a863b07396882d324759dd7addea4cf5142e9dd296a47b3fc2df5
17d07aff0e5f1f4ef44afbd6d7e78c9e235d40f909019429ec8b1253c7a89f41
86b93054415c6e4c21fd68ad13fcdbbd9a300c275dfe4f768ffd2fdf42db4694
739caabaad723c9cf69c0381bffd77d7c7cf372408dc8970a073c3acdce5c355
08893f139b09f2dc17635f17baf1f34d2fdf730ea44a41ba54b914ffc024f0c9
afc581586580ee675ab9b0cfef4e508b9decebe330dc6a7334534d34fb7d6a2e
12d89c6e8e3ef2ec6ae4fda7dce291a2418a51daa9eba44a583ced847c9e4e42
c8ff043caee4e9cc889d1b7f8149e5c59ec43d2d01edeb49cb40fe1fd09a233a
cd29b07e8df4c895797573022551be1e7f2ba6521d19dc692c42065cb0c2646b
74c7003daae4332200908731127b6a5252417bcb89ed610532bf577d503c7465
4685c8e4c8836d97c08ac60084f1ad2a12e0abed103c9a7048e3c36b40e8ed6d
1ad6352350f0b871f3757d1994aa42fee726cdca78834f743f09e8a15bfc3dd1
e5ffe75fc564d7a8aaabd188868910ddfc90cf64862f1af80a56c306e9b2e762
19b682f4983833b4f3670a22763a06cad7476076ea99a6800e7dbc8732431fd8
SH256 hash:
c362729899c5956cfa9fc3bcf9b21ac72066a1b84a497ceb1281f76e2f55c54b
MD5 hash:
0327d1374a5ce015ad9c83c5de76e823
SHA1 hash:
e521349d9e96a4191248747c42c78b6f88fc8f63
Link:
https://www.unpac.me/results/c1773db7-34f2-41b4-a290-500e00d5ee23/
SH256 hash:
057d80ce6598732bd8d98d7a128507c14c1f6096850eee3621836dc2bdb8e970
MD5 hash:
683dd94ccbdb2040dec07cb3a9c83395
SHA1 hash:
376061c8be07a1609043191333abd11d58808892
Link:
https://www.unpac.me/results/c1773db7-34f2-41b4-a290-500e00d5ee23/
SH256 hash:
c8ff043caee4e9cc889d1b7f8149e5c59ec43d2d01edeb49cb40fe1fd09a233a
MD5 hash:
b5a3a16559c14a2db6837fb8792134ae
SHA1 hash:
31280391b1a399a3bc1c8ea0f4fb27e2dc9e56a0
Link:
https://www.unpac.me/results/c1773db7-34f2-41b4-a290-500e00d5ee23/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.55
Link:
https://yomi.yoroi.company/submissions/c8ff043caee4e9cc889d1b7f8149e5c59ec43d2d01edeb49cb40fe1fd09a233a

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
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
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Malspam

Formbook

Executable exe c8ff043caee4e9cc889d1b7f8149e5c59ec43d2d01edeb49cb40fe1fd09a233a

(this sample)

  
Dropped by
Formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/176189/

Comments