Gen.Heur.Minggy.1_dc4b40a933

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

hrksrj.exe:884
%original file name%.exe:1308

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 hrksrj.exe:884 makes changes in the file system.

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

C:\AUTOEXEC.BAT .exe (1452114 bytes)
C:\MSDOS.SYS .exe (1452114 bytes)
C:\IO.SYS .exe (1452114 bytes)
C:\boot.ini .exe (1452114 bytes)
%Documents and Settings% .exe (1452114 bytes)
C:\RECYCLER .exe (1452114 bytes)
C:\ntldr .exe (1452114 bytes)
C:\%original file name%.exe .exe (1452114 bytes)
C:\original .exe (1452114 bytes)
C:\totalcmd .exe (1452114 bytes)
C:\NTDETECT.COM .exe (1452114 bytes)
C:\System Volume Information .exe (1452114 bytes)
C:\CONFIG.SYS .exe (1452114 bytes)
C:\marker .exe (1452114 bytes)
%Program Files% .exe (1452114 bytes)
%WinDir% .exe (1452114 bytes)
C:\pagefile.sys .exe (1452114 bytes)

The Trojan deletes the following file(s):

C:\Miraw (0 bytes)
C:\Mirar (0 bytes)
C:\Miras (0 bytes)
C:\Miral (0 bytes)
C:\Miram (0 bytes)
C:\Mirao (0 bytes)
C:\Mirai (0 bytes)
C:\Miraj (0 bytes)
C:\Mirad (0 bytes)
C:\Mirae (0 bytes)
C:\Miraf (0 bytes)
C:\Mirag (0 bytes)
C:\Miraa (0 bytes)
C:\Mirab (0 bytes)
C:\Mirac (0 bytes)

The process %original file name%.exe:1308 makes changes in the file system.

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

%Documents and Settings%\All Users\Application Data\Saaaalamm\Mira.h (537850 bytes)
%Documents and Settings%\All Users\Application Data\hrksrj.exe (914498 bytes)

Registry activity

The process hrksrj.exe:884 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\hrksrj.exe"

The process %original file name%.exe:1308 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "20 03 3B 01 60 FE 2A 55 1A AF FF 6D A1 E2 AB 4A"

[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
49207506a1099b78544cc44efd482cb6	c:\AUTOEXEC.BAT .exe
dc9d84cf663d049048270c80bb597a5b	c:\CONFIG.SYS .exe
05a27e88e636265d8792f1542d246b39	c:\Documents and Settings .exe
15cccb964efeeb58f9cd8ebf5757b3a1	c:\Documents and Settings\All Users\Application Data\Saaaalamm\Mira.h
dfd1c7dad7b0a769d8c877b9925a74d4	c:\Documents and Settings\All Users\Application Data\hrksrj.exe
631fff1147a6b6cf24d32f1464cae23d	c:\IO.SYS .exe
4873bacbe95129fc4931862d453aac34	c:\MSDOS.SYS .exe
a5cc3039b0c9fc92ee23cab265a2ad07	c:\NTDETECT.COM .exe
b09cb3c832f451bb9708f39f9fe4930b	c:\Perl .exe
95856c28ba9a9e2b269b5f3c446e9d3f	c:\Program Files .exe
99ed18d13829a95de4c9df55c890a6f2	c:\RECYCLER .exe
0b5ade42404ee18e3e115195debf11e2	c:\System Volume Information .exe
9332108502b88b0616e8c40046adf49e	c:\WINDOWS .exe
7b8fc772575171a86dcfb5d84d611f1d	c:\boot.ini .exe
52af51487a26e0f83b94339bb15e93c5	c:\%original file name%.exe .exe
70490084d66f5deb67cc69c65928ec43	c:\marker .exe
31f0f139fb166b9243ed2de640b30cc9	c:\ntldr .exe
06fa948bb1bfe272e089cbba5bd24729	c:\original .exe
cc69bf260713f2cce756b634590d31ae	c:\pagefile.sys .exe
c820e3831f24c78d2f11dc017f15a0bf	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):

   hrksrj.exe:884
   %original file name%.exe:1308

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

   C:\AUTOEXEC.BAT .exe (1452114 bytes)
   C:\MSDOS.SYS .exe (1452114 bytes)
   C:\IO.SYS .exe (1452114 bytes)
   C:\boot.ini .exe (1452114 bytes)
   %Documents and Settings% .exe (1452114 bytes)
   C:\RECYCLER .exe (1452114 bytes)
   C:\ntldr .exe (1452114 bytes)
   C:\%original file name%.exe .exe (1452114 bytes)
   C:\original .exe (1452114 bytes)
   C:\totalcmd .exe (1452114 bytes)
   C:\NTDETECT.COM .exe (1452114 bytes)
   C:\System Volume Information .exe (1452114 bytes)
   C:\CONFIG.SYS .exe (1452114 bytes)
   C:\marker .exe (1452114 bytes)
   %Program Files% .exe (1452114 bytes)
   %WinDir% .exe (1452114 bytes)
   C:\pagefile.sys .exe (1452114 bytes)
   %Documents and Settings%\All Users\Application Data\Saaaalamm\Mira.h (537850 bytes)
   %Documents and Settings%\All Users\Application Data\hrksrj.exe (914498 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\hrksrj.exe"

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

Static Analysis

VersionInfo

No information is available.

No information is available.

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	26552	26624	4.10726	414e02b26419af5c22fc1966d518c743

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

hrksrj.exe_884:

.text

.text

`.data

`.data

.rdata

.rdata

@.bss

@.bss

.idata

.idata

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

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