MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c2aa3b42821e22b2ad2c61981ffcbfbc9c24c2bc9c61899c6337155f3688d79a. 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: 10


Intelligence 10 IOCs YARA 5 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c2aa3b42821e22b2ad2c61981ffcbfbc9c24c2bc9c61899c6337155f3688d79a
SHA3-384 hash: 3b9aab4c2347a69324c9c77ec162e847403f750299e226c216903f39557812bfff4b84c0adcc804edbb4f18cca256215
SHA1 hash: 45ace2e40c068418579e7c4e948968d87d37dd30
MD5 hash: 0cd24caf7ad994817fe7757ac3c0d9e0
humanhash: butter-neptune-cup-victor
File name:0cd24caf7ad994817fe7757ac3c0d9e0
Download: download sample
Signature Formbook
Create hunting rule
File size:744'448 bytes
First seen:2022-06-24 06:15:07 UTC
Last seen:2022-06-24 07:44:11 UTC
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:nrjuHqgk3ECQpdVMBQkzVwHQAUEBCB/U5Uc4qjMZT3h46w1oFFiNXsxev44oJt:nrA/dmQkJwHQAUEBeU5yqYt31tev44
TLSH T16EF4F16587AD0E29E9FA23B579B4208D03FF8FF5B819E7DC4A05A29E5137F41072418B
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)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
188
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/282889/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Adding an access-denied ACE
Launching a process
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file
Launching cmd.exe command interpreter
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62b556df1e58e55866044904/reports/ee1d669a-28a2-4531-8e09-420975fd1a8f/overview
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/ff93f57a-bd33-4d68-8574-893ffcb9c8e5
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1019094
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to hide user accounts
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
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
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 651590 Sample: 62FFdz3AJq Startdate: 24/06/2022 Architecture: WINDOWS Score: 100 36 www.jhcdjewelry.com 2->36 40 Malicious sample detected (through community Yara rule) 2->40 42 Antivirus detection for URL or domain 2->42 44 Multi AV Scanner detection for submitted file 2->44 46 8 other signatures 2->46 11 62FFdz3AJq.exe 1 2->11         started        signatures3 process4 file5 28 C:\Users\user\AppData\...\62FFdz3AJq.exe.log, ASCII 11->28 dropped 14 subst.exe 11->14         started        process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 14->54 56 Maps a DLL or memory area into another process 14->56 58 Sample uses process hollowing technique 14->58 60 2 other signatures 14->60 17 explorer.exe 14->17 injected process8 dnsIp9 30 plus_gaming.connminer.com 129.226.34.253, 49880, 80 TENCENT-NET-AP-CNTencentBuildingKejizhongyiAvenueCN Singapore 17->30 32 www.7788tiepin.com 149.127.225.41, 49858, 80 COGENT-174US United States 17->32 34 2 other IPs or domains 17->34 38 System process connects to network (likely due to code injection or exploit) 17->38 21 systray.exe 17->21         started        signatures10 process11 signatures12 48 Modifies the context of a thread in another process (thread injection) 21->48 50 Maps a DLL or memory area into another process 21->50 52 Tries to detect virtualization through RDTSC time measurements 21->52 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c2aa3b42821e22b2ad2c61981ffcbfbc9c24c2bc9c61899c6337155f3688d79a/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-06-24 00:10:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
13 of 26 (50.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ykvdwqucdyrlfljmmgmb77f7xsocjqv4trqythddg4kv6nui26na._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:zgtb loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220624-g1fnbaadal/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Blocklisted process makes network request
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
70b785e5cb5b2e61c0f5da4a71ab0bbd14d9a0849387f037e0d75cc1ffe0a082
MD5 hash:
5951b52c9b4d11ca7f4f33e5a3fb2c31
SHA1 hash:
0bc54fd699fff7b93e5c447a141c0d904924ab0d
Link:
https://www.unpac.me/results/8b21fbe6-0188-43cc-b34a-f01d9036f79c/
SH256 hash:
12da1e4e4ab6a7b215594514682b273ea929c00b40833cbfd59a9cd40fe931c2
MD5 hash:
97bbf99395c631c6dece50f3d5410ae1
SHA1 hash:
0cf1db961840b6627040a8c91669f2dc233494c3
Link:
https://www.unpac.me/results/8b21fbe6-0188-43cc-b34a-f01d9036f79c/
SH256 hash:
c2aa3b42821e22b2ad2c61981ffcbfbc9c24c2bc9c61899c6337155f3688d79a
MD5 hash:
0cd24caf7ad994817fe7757ac3c0d9e0
SHA1 hash:
45ace2e40c068418579e7c4e948968d87d37dd30
Link:
https://www.unpac.me/results/8b21fbe6-0188-43cc-b34a-f01d9036f79c/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c2aa3b42821e/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/c2aa3b42821e22b2ad2c61981ffcbfbc9c24c2bc9c61899c6337155f3688d79a

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
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 c2aa3b42821e22b2ad2c61981ffcbfbc9c24c2bc9c61899c6337155f3688d79a

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2248703/
Cape
Cape
https://www.capesandbox.com/analysis/282889/

Comments


Avatar
zbet commented on 2022-06-24 06:15:14 UTC

url : hxxp://103.167.91.26/office11n/vbc.exe