Gen.Trojan.Heur.9y1vqu9UYmi_4b07b5f5e9

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

uyiaus.exe:1880
%original file name%.exe:2016

The Trojan injects its code into the following process(es):No processes have been created.

Mutexes

The following mutexes were created/opened:No objects were found.

File activity

The process uyiaus.exe:1880 makes changes in the file system.

The Trojan creates and/or writes to the following file(s):

C:\AUTOEXEC.BAT .exe (1963130 bytes)
C:\MSDOS.SYS .exe (1963130 bytes)
C:\IO.SYS .exe (1963130 bytes)
C:\%original file name%.exe .exe (1963130 bytes)
C:\boot.ini .exe (1963130 bytes)
%Documents and Settings% .exe (1963130 bytes)
C:\RECYCLER .exe (1963130 bytes)
C:\ntldr .exe (1963130 bytes)
C:\original .exe (1963130 bytes)
C:\totalcmd .exe (1963130 bytes)
C:\NTDETECT.COM .exe (1963130 bytes)
C:\System Volume Information .exe (1963130 bytes)
C:\CONFIG.SYS .exe (1963130 bytes)
C:\marker .exe (1963130 bytes)
%Program Files% .exe (1963130 bytes)
%WinDir% .exe (1963130 bytes)
C:\pagefile.sys .exe (1963130 bytes)

The Trojan deletes the following file(s):

C:\Mirax (0 bytes)
C:\Miray (0 bytes)
C:\Mirat (0 bytes)
C:\Miraq (0 bytes)
C:\Mirar (0 bytes)
C:\Miras (0 bytes)
C:\Miral (0 bytes)
C:\Miran (0 bytes)
C:\Mirao (0 bytes)
C:\Mirai (0 bytes)
C:\Mirak (0 bytes)
C:\Mirad (0 bytes)
C:\Miraf (0 bytes)
C:\Mirag (0 bytes)
C:\Miraa (0 bytes)
C:\Mirac (0 bytes)

The process %original file name%.exe:2016 makes changes in the file system.

The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\All Users\Application Data\uyiaus.exe (1018898 bytes)
%Documents and Settings%\All Users\Application Data\Saaaalamm\Mira.h (960207 bytes)

Registry activity

The process uyiaus.exe:1880 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"

To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Microsoft® Windows® Operating System" = "%Documents and Settings%\All Users\Application Data\uyiaus.exe"

The process %original file name%.exe:2016 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "83 B5 3C F3 04 8D 42 39 0D 2B B9 EB 72 CD 53 DE"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

Dropped PE files

MD5	File path
8b23a812e451a653092693591198d7b7	c:\%original file name%.exe .exe
f700ab5402e90c648fbd22417d41595f	c:\AUTOEXEC.BAT .exe
0b128770f5bfdd4552eab93412bb0e15	c:\CONFIG.SYS .exe
96bed38bdec127792d8a4c15131dfbe5	c:\Documents and Settings .exe
2549139ceeb2c40c2ea0aeb04527d833	c:\Documents and Settings\All Users\Application Data\Saaaalamm\Mira.h
0fb5ccf6ff1d8528122ad7830f7c1e38	c:\Documents and Settings\All Users\Application Data\uyiaus.exe
217a413efef9f5104f9784150f233ff9	c:\IO.SYS .exe
472474c5ba8ae0ea2e6c99992aa675b6	c:\MSDOS.SYS .exe
a2075f182df30c18e40c9e592ab3638f	c:\NTDETECT.COM .exe
16585ceee4318835878ceb58e4e3846d	c:\Perl .exe
72bc2d54183a10f0f7a9fce50bdccc1b	c:\Program Files .exe
9c97e5d07eaaf5738710a22cf12bfad3	c:\RECYCLER .exe
0edaee1ace92cd3fb27034c6a4780b46	c:\System Volume Information .exe
5dfe2fc285de606c141e4860c5699b10	c:\WINDOWS .exe
108901b70f31befd4d16d7c11272f217	c:\boot.ini .exe
393925b51416d841635f43e5ea44dec8	c:\marker .exe
ef6fa7758905c5fd098c63c077038d42	c:\ntldr .exe
e36784f3665ff04d589e4a99ed6d922e	c:\original .exe
f8d5e9b6483c1cb56a901e53365c9430	c:\pagefile.sys .exe
4095fa285be37650e8414cc1b31f6cea	c:\totalcmd .exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

Removals

Remove it with Ad-Aware

1. Click (here) to download and install Ad-Aware Free Antivirus.
2. Update the definition files.
3. Run a full scan of your computer.

Manual removal*

1. Terminate malicious process(es) (How to End a Process With the Task Manager):

   uyiaus.exe:1880
   %original file name%.exe:2016

2. Delete the original Trojan file.
   
3. Delete or disinfect the following files created/modified by the Trojan:

   C:\AUTOEXEC.BAT .exe (1963130 bytes)
   C:\MSDOS.SYS .exe (1963130 bytes)
   C:\IO.SYS .exe (1963130 bytes)
   C:\%original file name%.exe .exe (1963130 bytes)
   C:\boot.ini .exe (1963130 bytes)
   %Documents and Settings% .exe (1963130 bytes)
   C:\RECYCLER .exe (1963130 bytes)
   C:\ntldr .exe (1963130 bytes)
   C:\original .exe (1963130 bytes)
   C:\totalcmd .exe (1963130 bytes)
   C:\NTDETECT.COM .exe (1963130 bytes)
   C:\System Volume Information .exe (1963130 bytes)
   C:\CONFIG.SYS .exe (1963130 bytes)
   C:\marker .exe (1963130 bytes)
   %Program Files% .exe (1963130 bytes)
   %WinDir% .exe (1963130 bytes)
   C:\pagefile.sys .exe (1963130 bytes)
   %Documents and Settings%\All Users\Application Data\uyiaus.exe (1018898 bytes)
   %Documents and Settings%\All Users\Application Data\Saaaalamm\Mira.h (960207 bytes)

4. Delete the following value(s) in the autorun key (How to Work with System Registry):

   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "Microsoft® Windows® Operating System" = "%Documents and Settings%\All Users\Application Data\uyiaus.exe"

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

Static Analysis

VersionInfo

Company Name: Microsoft Corporation
Product Name: Mira Malware
Product Version: 1.0.0.155
Legal Copyright: Microsoft Corporation
Legal Trademarks:
Original Filename:
Internal Name:
File Version: 1.0.0.155
File Description: Mira Malware
Comments:
Language: Chinese (Simplified, PRC)

Company Name: Microsoft CorporationProduct Name: Mira MalwareProduct Version: 1.0.0.155Legal Copyright: Microsoft CorporationLegal Trademarks: Original Filename: Internal Name: File Version: 1.0.0.155File Description: Mira MalwareComments: Language: Chinese (Simplified, PRC)

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	245368	245760	4.21465	8b164ac8ef3742f37830dc1842275667
.data	249856	608	1024	0.488703	6fda88cf7188a8245a53dfde927250fd
.rdata	253952	9384	9728	3.47165	dbe852009dbd077a9976cb0ecfb9aadf
.bss	266240	18576	0	0	d41d8cd98f00b204e9800998ecf8427e
.idata	286720	2212	2560	2.97703	5e5242c565219f3bd33a6568632559dc
.rsrc	290816	758300	750809	4.88018	652617dce3ae00481eea15ff41ed114b

Dropped from:

9d453cdaf2c78129a691d5e110325c51

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

The Trojan connects to the servers at the folowing location(s):

Strings from Dumps

uyiaus.exe_1880:

.text

.text

`.data

`.data

.rdata

.rdata

@.bss

@.bss

.idata

.idata

%Documents and Settings%\All Users\Application Data\uyiaus.exe

%Documents and Settings%\All Users\Application Data\uyiaus.exe

Software\Microsoft\Windows\CurrentVersion\Run

Software\Microsoft\Windows\CurrentVersion\Run

Windows

Windows

Operating System

Operating System

%H:%M:%S

%H:%M:%S

%m/%d/%y

%m/%d/%y

-0123456789

-0123456789

%s:%u: failed assertion `%s'

%s:%u: failed assertion `%s'

RegCloseKey

RegCloseKey

RegOpenKeyA

RegOpenKeyA

ADVAPI32.DLL

ADVAPI32.DLL

KERNEL32.dll

KERNEL32.dll

msvcrt.dll

msvcrt.dll

SHELL32.DLL

SHELL32.DLL