MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1c7221d77aa0958f77bc4796b0b1c09f4c781e877ee18a3c9627c440ef72233d. 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



Dridex


Vendor detections: 9


Maldoc score: 11


Intelligence 9 IOCs YARA 7 File information Comments

SHA256 hash: 1c7221d77aa0958f77bc4796b0b1c09f4c781e877ee18a3c9627c440ef72233d
SHA3-384 hash: d4bab58ec06fe28d25f1dae0eb5a53ab8011cf2d4a84b485f58d10b00a7a56ab1bbd8a363d205e6a49c112e720207470
SHA1 hash: fe3ec1e8cc8e87c1dc0606111d47bf27c7f74b3a
MD5 hash: 1aca4384a5da9c2a44745642382a981a
humanhash: hamper-fillet-mars-queen
File name:BOL 802513.xlsm
Download: download sample
Signature Dridex
File size:78'309 bytes
First seen:2020-12-21 19:26:37 UTC
Last seen:2020-12-24 08:41:38 UTC
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 1536:Di5hRQTVNwfUvsiDmkl/j4Zn31lYanHePkSg47McxXzoQJM4SAXq/R9YM:DahqvMytF/631Pn+8SjZHJH4iM
TLSH 9D73022CC5B1FC69C51A8ABCC12D88E3F48FDF966181F3BA5890365E10074879F597AD
Reporter GovCERT_CH
Tags:Dridex

Office OLE Information


This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE id
Maldoc score: 11
OLE dump

MalwareBazaar was able to identify 16 sections in this file using oledump:

Section IDSection sizeSection name
A1538 bytesPROJECT
A286 bytesPROJECTwm
A33997 bytesVBA/Module1
A41480 bytesVBA/Sheet1
A5999 bytesVBA/ThisWorkbook
A63513 bytesVBA/_VBA_PROJECT
A72140 bytesVBA/__SRP_0
A8217 bytesVBA/__SRP_1
A9496 bytesVBA/__SRP_2
A10576 bytesVBA/__SRP_3
A11819 bytesVBA/dir
B1112 bytesCompObj
B242 bytesf
B30 byteso
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
AutoExecZ_app1_a_LayoutRuns when the file is opened and ActiveX objects trigger events
SuspiciousRunMay run an executable file or a system command
SuspiciousChrMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
SuspiciousBase64 StringsBase64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
SuspiciousXLM macrosheetXLM macrosheet found. It could contain malicious code

Intelligence


File Origin
# of uploads :
255
# of downloads :
293
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
BOL 648796.xlsm
Verdict:
Malicious activity
Analysis date:
2020-12-21 18:16:27 UTC
Tags:
macros macros-on-open macros40

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/vnd.ms-excel.sheet.macroEnabled.12
Has a screenshot:
False
Contains macros:
False
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Creating a file in the %temp% directory
Creating a process with a hidden window
Sending an HTTP GET request
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
OOXML Excel File with Excel4Macro
Document image
Document image
Result
Gathering data
Result
Threat name:
Unknown
Detection:
malicious
Classification:
expl
Score:
100 / 100
Signature
Document contains an embedded VBA macro which may execute processes
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Downloads files with wrong headers with respect to MIME Content-Type
Machine Learning detection for dropped file
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office process drops PE file
Sigma detected: BlueMashroom DLL Load
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: Regsvr32 Anomaly
Behaviour
Behavior Graph:
Threat name:
Script-Macro.Infostealer.Dridex
Status:
Malicious
First seen:
2020-12-21 17:38:25 UTC
AV detection:
15 of 28 (53.57%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:dridex botnet loader macro
Behaviour
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Office loads VBA resources, possible macro or embedded object present
Loads dropped DLL
Dridex Loader
Dridex
Process spawned unexpected child process
Malware Config
C2 Extraction:
62.138.14.216:3074
46.4.83.131:3389
195.231.69.151:3889
198.211.118.187:3388
Dropper Extraction:
http://fyadvertising.com/wge5l3gsq.gif
Please note that we are no longer able to provide a coverage score for Virus Total.

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:ach_Dridex_xlsm_20200528_2
Author:abuse.ch
Rule name:Email_stealer_bin_mem
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:IPPort_combo_mem
Author:James_inthe_box
Description:IP and port combo
Rule name:Microsoft_XLSX_with_Macrosheet
Rule name:Select_from_enumeration
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Author:James_inthe_box
Description:UAC bypass in files like avemaria

File information


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

Malspam

Dridex

Excel file xlsm 1c7221d77aa0958f77bc4796b0b1c09f4c781e877ee18a3c9627c440ef72233d

(this sample)

  
Dropped by
Dridex
  
Delivery method
Distributed via e-mail attachment

Comments