Gen.Trojan.Heur.Vy1vuXPjoji_2fb52a6b60

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

rkffe.exe:1648
%original file name%.exe:1932

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 rkffe.exe:1648 makes changes in the file system.

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

C:\AUTOEXEC.BAT .exe (1540319 bytes)
C:\MSDOS.SYS .exe (1540319 bytes)
C:\IO.SYS .exe (1540319 bytes)
C:\boot.ini .exe (1540319 bytes)
%Documents and Settings% .exe (1540319 bytes)
C:\RECYCLER .exe (1540319 bytes)
C:\ntldr .exe (1540319 bytes)
C:\original .exe (1540319 bytes)
C:\totalcmd .exe (1540319 bytes)
C:\NTDETECT.COM .exe (1540319 bytes)
C:\System Volume Information .exe (1540319 bytes)
C:\CONFIG.SYS .exe (1540319 bytes)
C:\%original file name%.exe .exe (1540319 bytes)
C:\marker .exe (1540319 bytes)
%Program Files% .exe (1540319 bytes)
%WinDir% .exe (1540319 bytes)
C:\pagefile.sys .exe (1540319 bytes)

The Trojan deletes the following file(s):

C:\Mirav (0 bytes)
C:\Mirap (0 bytes)
C:\Miraq (0 bytes)
C:\Mirar (0 bytes)
C:\Miras (0 bytes)
C:\Miran (0 bytes)
C:\Mirao (0 bytes)
C:\Miraj (0 bytes)
C:\Mirak (0 bytes)
C:\Mirad (0 bytes)
C:\Mirae (0 bytes)
C:\Mirag (0 bytes)
C:\Miraa (0 bytes)

The process %original file name%.exe:1932 makes changes in the file system.

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

%Documents and Settings%\All Users\Application Data\rkffe.exe (975394 bytes)
%Documents and Settings%\All Users\Application Data\Saaaalamm\Mira.h (559962 bytes)

Registry activity

The process rkffe.exe:1648 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\rkffe.exe"

The process %original file name%.exe:1932 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D2 5F E2 F1 41 27 B3 21 1C C9 24 2B 58 6B 7F BB"

[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
0e8b6287540c429b9bba6a4737093f87	c:\%original file name%.exe .exe
9d89c03f754411ef0156e687172e3ef6	c:\AUTOEXEC.BAT .exe
e7d36e283e6ef0f7f51f9463d20ff20a	c:\CONFIG.SYS .exe
8b5e1d6b0cba66e956eed01427f20cfa	c:\Documents and Settings .exe
c126447d0756d3843fe21bc8d1b35083	c:\Documents and Settings\All Users\Application Data\Saaaalamm\Mira.h
dc998f9b7cf082b3eb4ccc99ecaac36c	c:\Documents and Settings\All Users\Application Data\rkffe.exe
b214309866a4afd4b94943eb0ed6c5df	c:\IO.SYS .exe
1ada5b352bbb110be344dbb85bc287a4	c:\MSDOS.SYS .exe
40509d54b121f75544d22b1e68e1eb11	c:\NTDETECT.COM .exe
f88d104f44d492923c48905849e8c1dc	c:\Perl .exe
022188655a94b6ea4cf16209c38cc4e8	c:\Program Files .exe
38503962a5652391c2215d27e9855db4	c:\RECYCLER .exe
73422f82687e2aec10f88826c4da55ed	c:\System Volume Information .exe
48bd4fd473f0b7d839e709b32ce100fe	c:\WINDOWS .exe
e437163e0466323503597c1af51c678c	c:\boot.ini .exe
df0b47798d1eb2b140a75743dbbc35f6	c:\marker .exe
b8140fb0b54e9a33693965b9b4af7913	c:\ntldr .exe
787f78926d18d4ce8f61a8f08af0f481	c:\original .exe
843ae3856fbf6dde588187d890931d27	c:\pagefile.sys .exe
9843a59a382dabfa669777780f9aa367	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):

   rkffe.exe:1648
   %original file name%.exe:1932

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

   C:\AUTOEXEC.BAT .exe (1540319 bytes)
   C:\MSDOS.SYS .exe (1540319 bytes)
   C:\IO.SYS .exe (1540319 bytes)
   C:\boot.ini .exe (1540319 bytes)
   %Documents and Settings% .exe (1540319 bytes)
   C:\RECYCLER .exe (1540319 bytes)
   C:\ntldr .exe (1540319 bytes)
   C:\original .exe (1540319 bytes)
   C:\totalcmd .exe (1540319 bytes)
   C:\NTDETECT.COM .exe (1540319 bytes)
   C:\System Volume Information .exe (1540319 bytes)
   C:\CONFIG.SYS .exe (1540319 bytes)
   C:\%original file name%.exe .exe (1540319 bytes)
   C:\marker .exe (1540319 bytes)
   %Program Files% .exe (1540319 bytes)
   %WinDir% .exe (1540319 bytes)
   C:\pagefile.sys .exe (1540319 bytes)
   %Documents and Settings%\All Users\Application Data\rkffe.exe (975394 bytes)
   %Documents and Settings%\All Users\Application Data\Saaaalamm\Mira.h (559962 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\rkffe.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: English (United States)

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: English (United States)

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	527252	525547	4.9776	99cc59b67e942c20f80e76a65683a83a

Dropped from:

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

rkffe.exe_1648:

.text

.text

`.data

`.data

.rdata

.rdata

@.bss

@.bss

.idata

.idata

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

%Documents and Settings%\All Users\Application Data\rkffe.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