Malware analysis APT28DropperExcelDoc.xls Malicious activity

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File name:	APT28DropperExcelDoc.xls
Full analysis:	https://app.any.run/tasks/2ce365f7-0439-4d7c-806c-3fed3bdc6758
Verdict:	Malicious activity
Analysis date:	December 06, 2018, 08:39:57
OS:	Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:	macros macros-on-open generated-doc
Indicators:
MIME:	application/vnd.ms-excel
File info:	Composite Document File V2 Document, Little Endian, Os: Windows, Version 6.2, Code page: 1251, Author: userr, Last Saved By: Windows, Name of Creating Application: Microsoft Excel, Last Printed: Sun Dec 4 23:48:47 2016, Create Time/Date: Wed Oct 19 23:49:03 2016, Last Saved Time/Date: Sun Jul 8 19:08:38 2018, Security: 0
MD5:	5DEBB3535CBA6615526C64E44D0F5E2B
SHA1:	ABAA744D9504C7F23A237F8220AC6A441016D518
SHA256:	5BAC7A020F173D6C35F73D76CD3745A36564DBB3DD32F2D5FC5021C353E76A54
SSDEEP:	12288:/bkdb1vJu/xtIIcnIE9A3HfOoV+4qF2KhaLZA6H/EHagqNC9:TkdbVJupvSmHfOoaF2KhaLZTx89

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

Launch configuration

Task duration:: 60 seconds
Heavy Evasion option:: off
Network geolocation:: off
Additional time used:: none
MITM proxy:: off
Privacy:: Public submission
Fakenet option:: off
Route via Tor:: off
Autoconfirmation of UAC:: on
Network:: on

Software preset

Internet Explorer 8.0.7601.17514 undefined
Adobe Acrobat Reader DC MUI (15.023.20070)
Adobe Flash Player 26 ActiveX (26.0.0.131)
Adobe Flash Player 26 NPAPI (26.0.0.131)
Adobe Flash Player 26 PPAPI (26.0.0.131)
Adobe Refresh Manager (1.8.0)
CCleaner (5.35)
FileZilla Client 3.36.0 (3.36.0)
Google Chrome (68.0.3440.106)
Google Update Helper (1.3.33.17)
Java 8 Update 92 (8.0.920.14)
Java Auto Updater (2.8.92.14)
Microsoft .NET Framework 4.6.1 (4.6.01055)
Microsoft Office Access MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Access Setup Metadata MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Excel MUI (English) 2010 (14.0.6029.1000)
Microsoft Office OneNote MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Outlook MUI (English) 2010 (14.0.6029.1000)
Microsoft Office PowerPoint MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Professional 2010 (14.0.6029.1000)
Microsoft Office Proof (English) 2010 (14.0.6029.1000)
Microsoft Office Proof (French) 2010 (14.0.6029.1000)
Microsoft Office Proof (Spanish) 2010 (14.0.6029.1000)
Microsoft Office Proofing (English) 2010 (14.0.6029.1000)
Microsoft Office Publisher MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Shared MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Shared Setup Metadata MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Single Image 2010 (14.0.6029.1000)
Microsoft Office Word MUI (English) 2010 (14.0.6029.1000)
Microsoft Visual C++ 2008 Redistributable - x86 9.0.30729.6161 (9.0.30729.6161)
Microsoft Visual C++ 2010 x86 Redistributable - 10.0.40219 (10.0.40219)
Microsoft Visual C++ 2013 Redistributable (x86) - 12.0.30501 (12.0.30501.0)
Microsoft Visual C++ 2013 x86 Additional Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2013 x86 Minimum Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2017 Redistributable (x86) - 14.15.26706 (14.15.26706.0)
Microsoft Visual C++ 2017 x86 Additional Runtime - 14.15.26706 (14.15.26706)
Microsoft Visual C++ 2017 x86 Minimum Runtime - 14.15.26706 (14.15.26706)
Mozilla Firefox 61.0.2 (x86 en-US) (61.0.2)
Notepad++ (32-bit x86) (7.5.1)
Opera 12.15 (12.15.1748)
Skype version 8.29 (8.29)
VLC media player (2.2.6)
WinRAR 5.60 (32-bit) (5.60.0)

Hotfixes

Client LanguagePack Package
Client Refresh LanguagePack Package
CodecPack Basic Package
Foundation Package
IE Troubleshooters Package
InternetExplorer Optional Package
KB2534111
KB2999226
KB976902
LocalPack AU Package
LocalPack CA Package
LocalPack GB Package
LocalPack US Package
LocalPack ZA Package
ProfessionalEdition
UltimateEdition

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MALICIOUS
- Starts CertUtil for decode files
  - EXCEL.EXE (PID: 2904)
- Application was dropped or rewritten from another process
  - Z4U8K1S8.exe (PID: 2604)
  - V8H3Q6H5.exe (PID: 3884)
- Unusual execution from Microsoft Office
  - EXCEL.EXE (PID: 2904)
SUSPICIOUS
- Creates files in the user directory
  - certutil.exe (PID: 3276)
  - certutil.exe (PID: 2452)
- Executable content was dropped or overwritten
  - certutil.exe (PID: 3276)
  - certutil.exe (PID: 2452)
INFO
- Creates files in the user directory
  - EXCEL.EXE (PID: 2904)
- Reads Microsoft Office registry keys
  - EXCEL.EXE (PID: 2904)
- Dropped object may contain Bitcoin addresses
  - EXCEL.EXE (PID: 2904)

Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report

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No Malware configuration.

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TRiD

.doc	\|	Microsoft Word document (28.1)
.xls	\|	Microsoft Excel sheet (26.4)
.xls	\|	Microsoft Excel sheet (alternate) (21.5)
.doc	\|	Microsoft Word document (old ver.) (16.7)

EXIF

FlashPix

Title:	-
Subject:	-
Keywords:	-
Template:	Normal
RevisionNumber:	1
TotalEditTime:	-
Pages:	1
Words:	18
Characters:	106
Lines:	1
Paragraphs:	1
CharCountWithSpaces:	123
Author:	userr
LastModifiedBy:	Пользователь Windows
Software:	Microsoft Excel
LastPrinted:	2016:12:04 23:48:47
CreateDate:	2016:10:19 22:49:03
ModifyDate:	2018:07:08 18:08:38
Security:	None
CodePage:	Unicode (UTF-8)
Company:	-
AppVersion:	15
ScaleCrop:	No
LinksUpToDate:	No
SharedDoc:	No
HyperlinksChanged:	No
TitleOfParts:	Sheet1
HeadingPairs:	Hojas de cálculo 1
CompObjUserTypeLen:	40
CompObjUserType:	Hoja de calculo de Microsoft Excel 2003

No data.

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All screenshots are available in the full report

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Total processes

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

2452

certutil -decode C:\Users\admin\AppData\Roaming\Microsoft\AddIns\P1T5J9B8.txt C:\Users\admin\AppData\Roaming\Microsoft\AddIns\V8H3Q6H5.exe

C:\Windows\system32\certutil.exe

EXCEL.EXE

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

CertUtil.exe

Exit code:

Version:

6.1.7600.16385 (win7_rtm.090713-1255)

Modules

Images
c:\windows\system32\certutil.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\certcli.dll
c:\windows\system32\atl.dll

2604

C:\Users\admin\AppData\Roaming\Microsoft\AddIns\Z4U8K1S8.exe

—

EXCEL.EXE

User:

admin

Company:

Simon Tatham

Integrity Level:

MEDIUM

Description:

SSH, Telnet and Rlogin client

Exit code:

Version:

Release 0.67

Modules

Images
c:\users\admin\appdata\roaming\microsoft\addins\z4u8k1s8.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.17514_none_41e6975e2bd6f2b2\comctl32.dll
c:\windows\system32\gdi32.dll

2904

"C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" /dde

C:\Program Files\Microsoft Office\Office14\EXCEL.EXE

—

explorer.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Microsoft Excel

Exit code:

Version:

14.0.6024.1000

Modules

Images
c:\program files\microsoft office\office14\excel.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll

3276

certutil -decode C:\Users\admin\AppData\Roaming\Microsoft\AddIns\T1U3H6N7.txt C:\Users\admin\AppData\Roaming\Microsoft\AddIns\Z4U8K1S8.exe

C:\Windows\system32\certutil.exe

EXCEL.EXE

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

CertUtil.exe

Exit code:

Version:

6.1.7600.16385 (win7_rtm.090713-1255)

Modules

Images
c:\windows\system32\certutil.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\certcli.dll
c:\windows\system32\atl.dll

3884

C:\Users\admin\AppData\Roaming\Microsoft\AddIns\V8H3Q6H5.exe

—

EXCEL.EXE

User:

admin

Company:

Simon Tatham

Integrity Level:

MEDIUM

Description:

SSH, Telnet and Rlogin client

Exit code:

Version:

Release 0.67

Modules

Images
c:\users\admin\appdata\roaming\microsoft\addins\v8h3q6h5.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\winsxs\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.17514_none_41e6975e2bd6f2b2\comctl32.dll
c:\windows\system32\gdi32.dll

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Total events

647

Read events

609

Write events

Delete events

Modification events


(PID) Process:	(2904) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\StartupItems
Operation:	write	Name:	er>
Value: 65723E00580B0000010000000000000000000000
(PID) Process:	(2904) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:	write	Name:	1033
Value: Off
(PID) Process:	(2904) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:	write	Name:	1033
Value: On
(PID) Process:	(2904) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel
Operation:	write	Name:	MTTT
Value: 580B000036A0F94B3F8DD40100000000
(PID) Process:	(2904) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\StartupItems
Operation:	delete value	Name:	er>
Value: 65723E00580B0000010000000000000000000000
(PID) Process:	(2904) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\StartupItems
Operation:	delete key	Name:
Value:
(PID) Process:	(2904) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency
Operation:	delete key	Name:
Value:
(PID) Process:	(2904) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:	write	Name:	UNCAsIntranet
Value: 0
(PID) Process:	(2904) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:	write	Name:	AutoDetect
Value: 1
(PID) Process:	(2904) EXCEL.EXE	Key:	HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\DocumentRecovery\139B2B
Operation:	write	Name:	139B2B
Value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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
2904	EXCEL.EXE	C:\Users\admin\AppData\Local\Temp\CVR96C5.tmp.cvr		—
		MD5:—	SHA256:—
2904	EXCEL.EXE	C:\Users\admin\AppData\Local\Temp\~DF1C55BA841A7D6C5D.TMP		—
		MD5:—	SHA256:—
2904	EXCEL.EXE	C:\Users\admin\AppData\Local\Temp\~DF585F6F5ED3DDF0C5.TMP		—
		MD5:—	SHA256:—
2904	EXCEL.EXE	C:\Users\admin\AppData\Roaming\Microsoft\AddIns\T1U3H6N7.txt		text
		MD5:—	SHA256:—
2904	EXCEL.EXE	C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.MSO\688A5B60.emf		emf
		MD5:—	SHA256:—
2904	EXCEL.EXE	C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.MSO\3700F81B.emf		emf
		MD5:—	SHA256:—
2904	EXCEL.EXE	C:\Users\admin\AppData\Local\Temp\APT28DropperExcelDoc.xls		document
		MD5:—	SHA256:—
2452	certutil.exe	C:\Users\admin\AppData\Roaming\Microsoft\AddIns\V8H3Q6H5.exe		executable
		MD5:BA78410702F0CC8453DA1AFBB2A8B670	SHA256:9F9E74241D59ECCFE7040BFDCBBCEACB374EDA397CC53A4197B59E4F6F380A91
2904	EXCEL.EXE	C:\Users\admin\AppData\Roaming\Microsoft\AddIns\P1T5J9B8.txt		text
		MD5:—	SHA256:—
3276	certutil.exe	C:\Users\admin\AppData\Roaming\Microsoft\AddIns\Z4U8K1S8.exe		executable
		MD5:BA78410702F0CC8453DA1AFBB2A8B670	SHA256:9F9E74241D59ECCFE7040BFDCBBCEACB374EDA397CC53A4197B59E4F6F380A91

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HTTP(S) requests

TCP/UDP connections

DNS requests

Threats

HTTP requests

No HTTP requests

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Connections

No data

DNS requests

No data

Threats

No threats detected

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No debug info

General Info

APT28DropperExcelDoc.xls

5DEBB3535CBA6615526C64E44D0F5E2B

ABAA744D9504C7F23A237F8220AC6A441016D518

5BAC7A020F173D6C35F73D76CD3745A36564DBB3DD32F2D5FC5021C353E76A54

12288:/bkdb1vJu/xtIIcnIE9A3HfOoV+4qF2KhaLZA6H/EHagqNC9:TkdbVJupvSmHfOoaF2KhaLZTx89

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Starts CertUtil for decode files

Application was dropped or rewritten from another process

Unusual execution from Microsoft Office

SUSPICIOUS

Creates files in the user directory

Executable content was dropped or overwritten

INFO

Creates files in the user directory

Reads Microsoft Office registry keys

Dropped object may contain Bitcoin addresses

Malware configuration

Static information

TRiD

EXIF

FlashPix

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings