MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ad5131dfaba269367d500cd343ccc1956434b4cb21c2fcd163545c433deded66. 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: 14


Intelligence 14 IOCs YARA 3 File information Comments
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SHA256 hash: ad5131dfaba269367d500cd343ccc1956434b4cb21c2fcd163545c433deded66
SHA3-384 hash: bcc57e6b3ab3a7b408b102aaae236916555dcc25a531281fa109bb4602948bdbb00d01feb11d79fe95e4c70d9237e635
SHA1 hash: c45d7695612191c4630825759d1ee90efeb5f63c
MD5 hash: 6afa6592e709e8a3bd291d579ee140b0
humanhash: fillet-cold-triple-kitten
File name:Nbvkrvfanxfmla.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:920'576 bytes
First seen:2023-05-31 12:38:05 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash faffee6ddb737e162a2459239510b1e6 (3 x Formbook)
ssdeep 12288:H7uk7C8LDMu42r0Dyo6Te5rf1C7nh5YaGNr23ax56pw1MJf:HC52r0WorR4Dw23i+w1
Threatray 2'936 similar samples on MalwareBazaar
TLSH T193159E3271B3A87AE9135638DC16B774A4387F123A27ED09BAE8BC1C4F37196251D253
TrID 86.8% (.EXE) Win32 Executable Borland Delphi 6 (262638/61)
4.6% (.EXE) Win32 Executable Delphi generic (14182/79/4)
4.3% (.SCR) Windows screen saver (13097/50/3)
1.4% (.EXE) Win32 Executable (generic) (4505/5/1)
0.6% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon 74fcd4d6c4f61cdc (3 x Formbook)
Reporter malwarelabnet
Tags:exe FormBook ModiLoader

Intelligence

File Origin
# of uploads :
1
# of downloads :
278
Origin country :
CA CA
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Nbvkrvfanxfmla.exe
Verdict:
Malicious activity
Analysis date:
2023-05-31 12:39:00 UTC
Tags:
dbatloader
Link:
https://app.any.run/tasks/fc404647-29a6-4b64-80d1-deb771aef0ad

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/394087/
Detection(s):
SecuriteInfo.com.Trojan.DownLoader45.57333.2986.8288.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
DNS request
Sending a custom TCP request
Creating a file
Creating a process from a recently created file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Sending an HTTP GET request
Reading critical registry keys
Creating a file in the %temp% directory
Launching a process
Launching the default Windows debugger (dwwin.exe)
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Stealing user critical data
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/88839/overview
Behaviour
MalwareBazaar
CheckCmdLine
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
explorer.exe greyware keylogger lolbin overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/64773fe6c55e8c7f61048f2e/reports/2dd9f33d-5acd-47d3-94f2-591c5b1de2e3/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/ad5131dfaba269367d500cd343ccc1956434b4cb21c2fcd163545c433deded66
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:
Dbatloader
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0bc168c1-240a-498b-bef5-59d06577739c
Result
Threat name:
DBatLoader, FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1246093
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates a thread in another existing process (thread injection)
Drops PE files with a suspicious file extension
Early bird code injection technique detected
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 domain / URL
Multi AV Scanner detection for dropped file
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
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected DBatLoader
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 879109 Sample: Nbvkrvfanxfmla.exe Startdate: 31/05/2023 Architecture: WINDOWS Score: 100 68 Snort IDS alert for network traffic 2->68 70 Multi AV Scanner detection for domain / URL 2->70 72 Found malware configuration 2->72 74 6 other signatures 2->74 9 Nbvkrvfanxfmla.exe 1 4 2->9         started        process3 dnsIp4 62 web.fe.1drv.com 9->62 64 ph-files.fe.1drv.com 9->64 66 2 other IPs or domains 9->66 38 C:\Users\Public\Libraries\afvrkvbN.pif, PE32 9->38 dropped 40 C:\Users\Public\Libraries40bvkrvfa.exe, PE32 9->40 dropped 42 C:\Users\...42bvkrvfa.exe:Zone.Identifier, ASCII 9->42 dropped 98 Drops PE files with a suspicious file extension 9->98 100 Writes to foreign memory regions 9->100 102 Allocates memory in foreign processes 9->102 104 2 other signatures 9->104 14 afvrkvbN.pif 9->14         started        file5 signatures6 process7 signatures8 110 Modifies the context of a thread in another process (thread injection) 14->110 112 Maps a DLL or memory area into another process 14->112 114 Sample uses process hollowing technique 14->114 116 Queues an APC in another process (thread injection) 14->116 17 explorer.exe 11 7 14->17 injected process9 dnsIp10 44 24worldmarket.com 92.204.213.186, 49702, 49703, 49704 VELIANET-ASvelianetInternetdiensteGmbHDE Germany 17->44 46 tz.qp077vip-cdn.vip 23.248.163.68, 49738, 49739, 49740 UHGL-AS-APUCloudHKHoldingsGroupLimitedHK United States 17->46 48 19 other IPs or domains 17->48 76 System process connects to network (likely due to code injection or exploit) 17->76 78 Early bird code injection technique detected 17->78 21 Nbvkrvfa.exe 17->21         started        25 Nbvkrvfa.exe 17->25         started        27 mstsc.exe 13 17->27         started        signatures11 process12 dnsIp13 50 web.fe.1drv.com 21->50 52 ph-files.fe.1drv.com 21->52 58 2 other IPs or domains 21->58 80 Multi AV Scanner detection for dropped file 21->80 82 Writes to foreign memory regions 21->82 84 Allocates memory in foreign processes 21->84 29 afvrkvbN.pif 21->29         started        54 web.fe.1drv.com 25->54 56 ph-files.fe.1drv.com 25->56 60 2 other IPs or domains 25->60 86 Creates a thread in another existing process (thread injection) 25->86 88 Injects a PE file into a foreign processes 25->88 32 afvrkvbN.pif 25->32         started        90 Tries to steal Mail credentials (via file / registry access) 27->90 92 Tries to harvest and steal browser information (history, passwords, etc) 27->92 94 Modifies the context of a thread in another process (thread injection) 27->94 96 Maps a DLL or memory area into another process 27->96 34 autochk.exe 27->34         started        36 colorcpl.exe 27->36         started        signatures14 process15 signatures16 106 Maps a DLL or memory area into another process 29->106 108 Sample uses process hollowing technique 29->108
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ad5131dfaba269367d500cd343ccc1956434b4cb21c2fcd163545c433deded66/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2023-05-31 08:05:30 UTC
File Type:
PE (Exe)
Extracted files:
84
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vvitdx5lujutm7kqbtjuhtgbsvsdjnglehbpzuldkroegppn5vta._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
02033ee5f18dc5c14cca3e808111693ff1b41d8d705268ae55e86251fe6bcc8b
Formbook
6362e9238ae682805b33d2503122e845994d69e1eb51f981cde99b04572cc85c
Formbook
7a91a1cbaa20e78c0e6814b51ed7d239074c95dd348159817e16606a6a04f344
Formbook
a7a6e2c9ad03dd090858ddc054751485681b77bd24397ad8e87218faa940f4a8
Formbook
b66f2c624df063159e9134b0369556142a3ad98b14fed1a6d9217ecd55fb3b6f
Formbook
eb66ae0428282ee90ca78a2f0d37e322cc682bd9dccb9c7e50bf53da117fd0a4
Formbook
fca144f13d2819b16b527620ba2e1d844a41b3b91057b869751ff004ac6d9d3c
Formbook
+ 2'926 additional samples on MalwareBazaar
Result
Malware family:
modiloader
Create hunting rule
Score:
  10/10
Tags:
family:modiloader persistence trojan
Link:
https://tria.ge/reports/230531-pvl7xafa32/
Behaviour
Modifies Internet Explorer settings
Script User-Agent
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
ModiLoader Second Stage
ModiLoader, DBatLoader
Unpacked files
SH256 hash:
91745aed333d9326a6add7d732b81d930282a4425bb96ebb1466d0b567f2d6f2
MD5 hash:
6f6cc425754b1f4c09e967a420f2ca4f
SHA1 hash:
b052b9051b2df24f8c9f0811d53cd84abca776db
Detections:
win_dbatloader_g1
Create hunting rule
Link:
https://www.unpac.me/results/c3b5fe98-0d2e-4608-a611-4cc5bcfacd9e/
Parent samples :
6362e9238ae682805b33d2503122e845994d69e1eb51f981cde99b04572cc85c
cd0120b7c1d114b73fd768a37de9e2c34fb1662a3e1dc620b34763410ccb6d7e
ad5131dfaba269367d500cd343ccc1956434b4cb21c2fcd163545c433deded66
545e53fd784db3a0227fcf431e81005c9f74ec6be1dcee9a1a2734fa103b6b27
c1bcaa3723fd87f8a0a537c14ecf7e5852a69d33995333b40a7a475eb2e1696c
ea2f8aca010aba1f0ebb0b5af2de53b2a4106d5feb147f34e0a8e615eccd77c1
a4a9151dee1026abcaec06ec7596983a05cc7df43c37d5646e17ae02e2902445
72cf82cbf24e740b354e9d3b86072b0ad4a741a8489870b42f559d93a364ce82
SH256 hash:
ad5131dfaba269367d500cd343ccc1956434b4cb21c2fcd163545c433deded66
MD5 hash:
6afa6592e709e8a3bd291d579ee140b0
SHA1 hash:
c45d7695612191c4630825759d1ee90efeb5f63c
Detections:
DbatLoaderStage1
Create hunting rule
Link:
https://www.unpac.me/results/c3b5fe98-0d2e-4608-a611-4cc5bcfacd9e/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ad5131dfaba2/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.47
Link:
https://yomi.yoroi.company/submissions/ad5131dfaba269367d500cd343ccc1956434b4cb21c2fcd163545c433deded66

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:CMD_Ping_Localhost
Create hunting rule
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/394087/

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