MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aa99576f50fbf176a2d463fa84591fb651c1751a344949a01b93fb8afa297b2d. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: aa99576f50fbf176a2d463fa84591fb651c1751a344949a01b93fb8afa297b2d
SHA3-384 hash: 812d2eaaf398504e763d95bfd07bab87f60c48bfa6d6e300f1d755430ebe0cf400c055aa6448e2ae54731d9476e5d7c7
SHA1 hash: aaa3cf3bde058e51cd07a0813c0809f4c2070cb6
MD5 hash: d073a5ff90318913caf55a502993ec81
humanhash: coffee-nine-johnny-london
File name:PO2136634.xll
Download: download sample
Signature Formbook
Create hunting rule
File size:1'422'336 bytes
First seen:2022-05-10 11:04:54 UTC
Last seen:Never
File type:Excel file xll
MIME type:application/x-dosexec
imphash be710ba34b048ab0098050ccf62e369c (18 x Formbook, 14 x Dridex, 9 x AgentTesla)
ssdeep 24576:5nnnZqpFRKX1ndTPoTfN/0q0QnbhlEMFN/iNo8+:SR+dTPuAUb7
Threatray 1'232 similar samples on MalwareBazaar
TLSH T18565F167E3D7FAB0E6AE56BAC5B1D678176EB4A28175B74DB6400CCD29207438830F13
TrID 58.0% (.CPL) Windows Control Panel Item (generic) (197083/11/60)
34.3% (.OCX) Windows ActiveX control (116521/4/18)
3.0% (.EXE) Win64 Executable (generic) (10523/12/4)
1.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
1.3% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter abuse_ch
Tags:FormBook xll

Intelligence

File Origin
# of uploads :
1
# of downloads :
165
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO2136634.xll
Verdict:
No threats detected
Analysis date:
2022-05-10 11:13:17 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/d025b270-6881-4e2d-b000-60953dd90af9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.FileRepMalwareMisc.7087.8889.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malicious
File Type:
Office Add-Ins - Suspicious
Link:
https://app.docguard.net/aa99576f50fbf176a2d463fa84591fb651c1751a344949a01b93fb8afa297b2d/results/dashboard
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/627a46fa92de4ecac40f338e/reports/7e088316-1076-4ad0-8c53-9dc2a90ae00c/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.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
evad.troj.expl
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/990891
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Office process drops PE file
Queues an APC in another process (thread injection)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 623408 Sample: PO2136634.xll Startdate: 10/05/2022 Architecture: WINDOWS Score: 100 38 www.srfsx.com 2->38 50 Found malware configuration 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 Multi AV Scanner detection for submitted file 2->54 56 6 other signatures 2->56 10 cmd.exe 7 2 2->10         started        12 Iwqvtxz.exe 14 2 2->12         started        16 Iwqvtxz.exe 2 2->16         started        signatures3 process4 dnsIp5 18 EXCEL.EXE 24 22 10->18         started        22 conhost.exe 10->22         started        42 162.159.129.233, 443, 49805 CLOUDFLARENETUS United States 12->42 44 cdn.discordapp.com 12->44 66 Multi AV Scanner detection for dropped file 12->66 68 Machine Learning detection for dropped file 12->68 46 162.159.134.233, 443, 49808 CLOUDFLARENETUS United States 16->46 48 cdn.discordapp.com 16->48 signatures6 process7 file8 34 C:\Users\user\...\AudioAppVYAIPYLOFT.exe, PE32 18->34 dropped 58 Document exploit detected (creates forbidden files) 18->58 24 AudioAppVYAIPYLOFT.exe 16 5 18->24         started        signatures9 process10 dnsIp11 40 cdn.discordapp.com 162.159.130.233, 443, 49774 CLOUDFLARENETUS United States 24->40 36 C:\Users\user\AppData\Roaming\...\Iwqvtxz.exe, PE32 24->36 dropped 60 Machine Learning detection for dropped file 24->60 62 Writes to foreign memory regions 24->62 64 Injects a PE file into a foreign processes 24->64 29 InstallUtil.exe 24->29         started        file12 signatures13 process14 signatures15 70 Modifies the context of a thread in another process (thread injection) 29->70 72 Maps a DLL or memory area into another process 29->72 74 Tries to detect virtualization through RDTSC time measurements 29->74 76 Queues an APC in another process (thread injection) 29->76 32 explorer.exe 29->32 injected process16
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/aa99576f50fbf176a2d463fa84591fb651c1751a344949a01b93fb8afa297b2d/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-05-10 11:05:18 UTC
File Type:
PE (Dll)
Extracted files:
2
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vkmvo32q7pyxniwump5iiwi7wzi4c5i2greutia3sp5yv6rjpmwq._file
Verdict:
malicious
Similar samples:
0bc2d39e3f0460d299a315cb249fd7f0d863325f8bf666355cac323847a34bbb
Formbook
19a74b73bfbb078a9a9fe5c0789d7d011ea547dc2f6a8e17f44efe7c5dffcf57
Formbook
1a443f4faa6f4187f8b4e90743b30c48bd33fe18602238a992316036d779f4f8
Formbook
3b61599315b7b2f3c545912e143e618eba3cb8a494540d603f35df1253b1eaea
Formbook
50a63763869837109a18b4f641550c6e04a851dcc0108ca02b44bc7d56702b3a
Formbook
72e54878f1c063c5d48e40734f1fe23a3a19d965bf4205c3b45a7762ff68eaff
Formbook
791b2bf682699cf97e3925dee40ddd5c2cb728e80f798225a7fb0b713c1b1544
Formbook
813aff897ee8f0f44d021f2f83027c4363b37cf92a0024055c2f22c0ba477ad9
Formbook
+ 1'222 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:gdtn loader persistence rat suricata
Link:
https://tria.ge/reports/220510-m6tp1sgfe5/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
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/aa99576f50fbf176a2d463fa84591fb651c1751a344949a01b93fb8afa297b2d

File information

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

Malspam

Formbook

Excel file xll aa99576f50fbf176a2d463fa84591fb651c1751a344949a01b93fb8afa297b2d

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments