MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ffec6e6d4e314f64f5d31c62024252abde7f77acdd63991cb16923ff17828885. 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


Lazarus


Vendor detections: 7


Maldoc score: 29


Intelligence 7 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ffec6e6d4e314f64f5d31c62024252abde7f77acdd63991cb16923ff17828885
SHA3-384 hash: 7ef43dc3ef2547308fef92d790ea6968570c1aff94b92a7cf72c3da884af8d28c6b89eba9b0495bb90beb5a133317727
SHA1 hash: 3d57c7680f3f9351164f75a7d477a815e39b0389
MD5 hash: f86fb4a63cdff302af2ccf2b2663d757
humanhash: fillet-triple-failed-nineteen
File name:rheinmetall_job_requirements.doc
Download: download sample
Signature Lazarus
Create hunting rule
File size:1'485'824 bytes
First seen:2021-05-05 15:06:27 UTC
Last seen:2021-05-05 16:03:36 UTC
File type:Word file doc
MIME type:application/msword
ssdeep 24576:vvPHUEykNi6nmBXEYriYjr6GOb87AKEb73nn1PUu01e0sC8s0vuzH:vvPHUkE6aZI063dU91Pmh
TLSH 3A65BE303897E86FF1E25F784E9C2BFF6D5A6917BF809217914092168939B48CF5D834
Reporter LittleRedBean2
Tags:apt Lazarus maldoc

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: 29
Application name is Microsoft Office Word
Office document is in OLE format
Office document contains VBA Macros
OLE dump

MalwareBazaar was able to identify 14 sections in this file using oledump:

Section IDSection sizeSection name
1117 bytesCompObj
24096 bytesDocumentSummaryInformation
34096 bytesSummaryInformation
4109859 bytes1Table
5934220 bytesData
6403 bytesMacros/PROJECT
765 bytesMacros/PROJECTwm
82057 bytesMacros/VBA/ThisDocument
9400161 bytesMacros/VBA/UMpthHe
103463 bytesMacros/VBA/_VBA_PROJECT
11567 bytesMacros/VBA/dir
12292 bytesMsoDataStore/VLEPYIDY==/Item
13341 bytesMsoDataStore/VLEPYIDY==/Properties
149272 bytesWordDocument
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
AutoExecDocument_OpenRuns when the Word or Publisher document is opened
Base64hemas-microsoft-aGVtYXMtbWljcm9zb2Z0LWNvbTphc20udjEnIG1hbmlmZ
IOCDriverUpdateFx.exeExecutable file name
IOCDriverUpdateCheck.exExecutable file name
IOCexplorer.exeExecutable file name
IOCmavinject.exeExecutable file name
SuspiciousWriteMay write to a file (if combined with Open)
SuspiciousCreateTextFileMay create a text file
SuspiciousShellMay run an executable file or a system command
SuspiciousWscript.ShellMay run an executable file or a system command
SuspiciousRunMay run an executable file or a system command
SuspiciousCreateObjectMay create an OLE object
SuspiciousGetObjectMay get an OLE object with a running instance
SuspiciousWindowsMay enumerate application windows (if combined with Shell.Application object)
SuspiciousCreateThreadMay inject code into another process
SuspiciousVirtualAllocMay inject code into another process
SuspiciousVirtualProtectMay inject code into another process Base64)
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)

Intelligence

File Origin
# of uploads :
3
# of downloads :
219
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
rheinmetall_job_requirements.doc
Verdict:
Malicious activity
Analysis date:
2021-05-05 14:36:50 UTC
Tags:
macros macros-on-open generated-doc
Link:
https://app.any.run/tasks/c7684bf8-5625-450a-852e-841fb4103f21

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/msword
Has a screenshot:
False
Contains macros:
True
Detection(s):
TwinWave.EvilDoc.DOCXRSTRGOOD.KERNEL32.200608B64.9.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.HTTPS_.210304B64.2.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD._THIS_PROGRAM.210413B64.5.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
Creating a file
Delayed writing of the file
Deleting a recently created file
Creating a process from a recently created file
Using the Windows Management Instrumentation requests
Replacing files
Changing a file
Running batch commands by exploiting the app vulnerability
Result
Threat name:
Unknown
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/712130
Signature
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document contains an embedded VBA with base64 encoded strings
Document contains an embedded VBA with hexadecimal encoded strings
Document exploit detected (process start blacklist hit)
Evasive VBA macro found (queries processes via WMI)
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: MavInject Process Injection
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: Suspicious Certutil Command
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 405000 Sample: rheinmetall_job_requirements.doc Startdate: 05/05/2021 Architecture: WINDOWS Score: 100 25 Multi AV Scanner detection for dropped file 2->25 27 Sigma detected: MavInject Process Injection 2->27 29 Multi AV Scanner detection for submitted file 2->29 31 9 other signatures 2->31 7 WINWORD.EXE 345 34 2->7         started        process3 process4 9 cmd.exe 7->9         started        11 cmd.exe 1 7->11         started        14 cmd.exe 1 7->14         started        16 2 other processes 7->16 file5 18 DriverUpdateFx.exe 2 9->18         started        23 C:\Drivers\DriverUpdateFx.exe, PE32+ 11->23 dropped process6 file7 21 C:\Drivers\DriverGFX.tmp, PE32+ 18->21 dropped
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ffec6e6d4e314f64f5d31c62024252abde7f77acdd63991cb16923ff17828885/
Threat name:
Document-Office.Trojan.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2021-05-05 15:07:05 UTC
AV detection:
8 of 46 (17.39%)
Threat level:
  2/5
Result
Malware family:
n/a
Score:
  10/10
Tags:
macro macro_on_action
Link:
https://tria.ge/reports/210505-sbl9r7g4ba/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
NTFS ADS
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: RenamesItself
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Deletes itself
Loads dropped DLL
Executes dropped EXE
Process spawned unexpected child process
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Donoff
Score:
0.80
Link:
https://yomi.yoroi.company/submissions/ffec6e6d4e314f64f5d31c62024252abde7f77acdd63991cb16923ff17828885

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:apt_Lazarus_Job_Lure_May2021_1
Create hunting rule
Author:Nils Kuhnert
Description:Triggers on macro strings used in Lazarus lure.
Rule name:crime_win32_ransom_avaddon_1
Create hunting rule
Author:@VK_Intel
Description:Detects Avaddon ransomware
Reference:https://twitter.com/VK_Intel/status/1300944441390370819
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:Ping_Del_method_bin_mem
Create hunting rule
Author:James_inthe_box
Description:cmd ping IP nul del
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