MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 98b3fa8ad7143d6bfb754aeca00ded8ffe5789d7e4360f51841801906f5e5551. 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: 11


Maldoc score: 15


Intelligence 11 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 98b3fa8ad7143d6bfb754aeca00ded8ffe5789d7e4360f51841801906f5e5551
SHA3-384 hash: dd3363378470f207e4cfe5723df43bccd5a90c9c2e375f8f70d2ec78849daa22285e76072edb58811e4fd145e8795a8e
SHA1 hash: 98e7e3c303a0a6010b6c2bd1bbd64688eb8753a3
MD5 hash: 54825e5a9b5da2c6d3e71155680a2c4d
humanhash: solar-uniform-lithium-east
File name:sample20210120-01.xlsm
Download: download sample
Signature Dridex
Create hunting rule
File size:38'038 bytes
First seen:2021-01-20 11:59:29 UTC
Last seen:2021-02-17 15:51:36 UTC
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 768:IxPLv4xxXRG9HR4sjVpVNsz/LaR+ZUmlmWPwkGq/gR9oQ/:aPb4xxXizgu+ZMFq/gR9P
TLSH 9D03CF38D1175828C27FC03995659CF0D6161C819DA1E27E26C8FA6C6BDA0F7638637D
Reporter JAMESWT_WT
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: 15
OLE dump

MalwareBazaar was able to identify 17 sections in this file using oledump:

Section IDSection sizeSection name
A1605 bytesPROJECT
A2107 bytesPROJECTwm
A35186 bytesVBA/Module1
A41479 bytesVBA/Sheet1
A5991 bytesVBA/Sheet2
A6999 bytesVBA/ThisWorkbook
A73838 bytesVBA/_VBA_PROJECT
A82390 bytesVBA/__SRP_0
A9347 bytesVBA/__SRP_1
A10505 bytesVBA/__SRP_2
A11696 bytesVBA/__SRP_3
A12842 bytesVBA/dir
B1112 bytesCompObj
B288 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
AutoExecvbox1_cli_LayoutRuns when the file is opened and ActiveX objects trigger events
SuspiciousRunMay run an executable file or a system command
SuspiciousLibMay run code from a DLL
SuspiciousURLDownloadToFileAMay download files from the Internet
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 :
192
# of downloads :
159
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
98e7e3c303a0a6010b6c2bd1bbd64688eb8753a3.xlsm
Verdict:
Malicious activity
Analysis date:
2021-01-20 11:27:35 UTC
Tags:
macros macros-on-open macros40 loader trojan banker dridex
Link:
https://app.any.run/tasks/8d6bb7ae-97b3-4886-bf4a-5a574a5d3a14

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/vnd.ms-excel.sheet.macroEnabled.12
Has a screenshot:
False
Contains macros:
True
Detection(s):
TwinWave.EvilDoc.Dridex.RevengeOfTheSynth.20210119.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
DNS request
Creating a file in the %temp% directory
Sending a custom TCP request
Sending an HTTP GET request
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
OOXML Excel File with Excel4Macro
Link:
https://app.docguard.net/98b3fa8ad7143d6bfb754aeca00ded8ffe5789d7e4360f51841801906f5e5551/results/dashboard
Document image
Image:
Download PNG
Document image
Result
Verdict:
MALICIOUS
Details
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Macro with DLL Reference
Detected macro logic that will load additional functionality from Dynamically Linked Libraries (DLLs). While not explicitly malicious, this is a common tactic for accessing APIs that are not otherwised exposed via Visual Basic for Applications (VBA).
Anomalous Macrosheet Path
Microsoft Excel spreadsheet references a macrosheet with a non-standard path. A potentially evasive tactic.
Result
Threat name:
Hidden Macro 4.0
Create hunting rule
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/586055
Signature
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Found Excel 4.0 Macro with suspicious formulas
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
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)
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 342058 Sample: sample20210120-01.xlsm Startdate: 20/01/2021 Architecture: WINDOWS Score: 100 54 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->54 56 Multi AV Scanner detection for submitted file 2->56 58 Document exploit detected (drops PE files) 2->58 60 7 other signatures 2->60 7 EXCEL.EXE 244 73 2->7         started        process3 dnsIp4 42 urihk.com 192.185.5.66, 49168, 80 UNIFIEDLAYER-AS-1US United States 7->42 44 artec.com.tr 46.28.239.13, 49188, 80 PREMIERDC-VERI-MERKEZI-ANONIM-SIRKETIPREMIERDC-SHTR Turkey 7->44 46 4 other IPs or domains 7->46 34 C:\Users\user\AppData\Local\...\xcdhikiv.dll, PE32 7->34 dropped 36 C:\Users\user\AppData\Local\...\uomupyfa.dll, PE32 7->36 dropped 38 C:\Users\user\AppData\Local\...\amqycaqo.dll, PE32 7->38 dropped 40 6 other malicious files 7->40 dropped 64 Document exploit detected (creates forbidden files) 7->64 66 Document exploit detected (process start blacklist hit) 7->66 68 Document exploit detected (UrlDownloadToFile) 7->68 12 regsvr32.exe 7->12         started        14 regsvr32.exe 7->14         started        16 regsvr32.exe 7->16         started        18 9 other processes 7->18 file5 signatures6 process7 process8 20 regsvr32.exe 12->20         started        23 regsvr32.exe 11 14->23         started        26 regsvr32.exe 9 16->26         started        28 regsvr32.exe 9 18->28         started        30 regsvr32.exe 9 18->30         started        32 regsvr32.exe 18->32         started        dnsIp9 62 System process connects to network (likely due to code injection or exploit) 20->62 48 198.57.200.100, 3786, 49179, 49191 UNIFIEDLAYER-AS-1US United States 23->48 50 194.225.58.214, 443, 49172, 49174 TUMS-IR-ASIR Iran (ISLAMIC Republic Of) 23->50 52 2 other IPs or domains 23->52 signatures10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/98b3fa8ad7143d6bfb754aeca00ded8ffe5789d7e4360f51841801906f5e5551/
Threat name:
Script-Macro.Trojan.Logan
Create hunting rule
Status:
Malicious
First seen:
2021-01-20 11:41:40 UTC
File Type:
Document
Extracted files:
51
AV detection:
7 of 28 (25.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=tcz7vcwxcq6wx63vjlwkadpnr77fpcox4q3a6umedaaza326kviq._file
Result
Malware family:
dridex
Create hunting rule
Score:
  10/10
Tags:
family:dridex botnet loader macro xlm
Link:
https://tria.ge/reports/210120-8lkfcg45fj/
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
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/98b3fa8ad7143d6bfb754aeca00ded8ffe5789d7e4360f51841801906f5e5551

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

Comments