Gen.Heur.Minggy.1_b8da9bdb4e

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

ywghhw.exe:120
%original file name%.exe:876

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 ywghhw.exe:120 makes changes in the file system.

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

C:\AUTOEXEC.BAT .exe (1455811 bytes)
C:\MSDOS.SYS .exe (1455811 bytes)
C:\IO.SYS .exe (1455811 bytes)
C:\boot.ini .exe (1455811 bytes)
%Documents and Settings% .exe (1455811 bytes)
C:\RECYCLER .exe (1455811 bytes)
C:\%original file name%.exe .exe (1455811 bytes)
C:\ntldr .exe (1455811 bytes)
C:\original .exe (1455811 bytes)
C:\totalcmd .exe (1455811 bytes)
C:\NTDETECT.COM .exe (1455811 bytes)
C:\System Volume Information .exe (1455811 bytes)
C:\CONFIG.SYS .exe (1455811 bytes)
C:\marker .exe (1455811 bytes)
%Program Files% .exe (1455811 bytes)
%WinDir% .exe (1455811 bytes)
C:\pagefile.sys .exe (1455811 bytes)

The Trojan deletes the following file(s):

C:\Mirav (0 bytes)
C:\Miraw (0 bytes)
C:\Mirap (0 bytes)
C:\Miraq (0 bytes)
C:\Mirar (0 bytes)
C:\Miram (0 bytes)
C:\Miran (0 bytes)
C:\Mirah (0 bytes)
C:\Mirai (0 bytes)
C:\Mirak (0 bytes)
C:\Mirad (0 bytes)
C:\Mirag (0 bytes)
C:\Mirab (0 bytes)
C:\Mirac (0 bytes)

The process %original file name%.exe:876 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 (542871 bytes)
%Documents and Settings%\All Users\Application Data\ywghhw.exe (914498 bytes)

Registry activity

The process ywghhw.exe:120 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\ywghhw.exe"

The process %original file name%.exe:876 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "AA 68 9D FE 5E 2E C0 E5 1E 2A 75 1D 73 F0 BB 13"

[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
ecefbbdd02ba35f108a0aced88cb05c9	c:\AUTOEXEC.BAT .exe
3d2682a6fad2f787c6b20c0429f84b5a	c:\CONFIG.SYS .exe
ff55c3961246942a79dbb64c025bf5e7	c:\Documents and Settings .exe
d882647ae95e92c82bd66478d7043df3	c:\Documents and Settings\All Users\Application Data\Saaaalamm\Mira.h
cd82c6795b5fd50e44f1072001e609b6	c:\Documents and Settings\All Users\Application Data\ywghhw.exe
32052182e64c37d65d5e2cfd4706a635	c:\IO.SYS .exe
bec14e7c9d8e19ef85942cd1befd59fc	c:\MSDOS.SYS .exe
f3a82cda8aeae7e67820af5d28d1e89b	c:\NTDETECT.COM .exe
9c9313864bcf293939555a926144c440	c:\Perl .exe
c2c31a588154adaeb93a15ac613c738c	c:\Program Files .exe
8f45466d747389374c888adecdc623dd	c:\RECYCLER .exe
7fc596a2a2d836ec8208898147e5218d	c:\System Volume Information .exe
6aa5de46e00612893a5108be54749c11	c:\WINDOWS .exe
756a3481319294f0be6e529c7d2920e8	c:\%original file name%.exe .exe
48f3886b7f31a68b8f0a80d45387255a	c:\boot.ini .exe
3ff6f5834e46a251c4dbbc8ad6a2b628	c:\marker .exe
40225d6a5b6a264f07d57a5e65a44ff8	c:\ntldr .exe
e16e6eb949038900afb396d481a67e7d	c:\original .exe
7b417c183de7a620ff249efaec82c0d4	c:\pagefile.sys .exe
a7318fff90a19c04261a03f5b214ce0d	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):

   ywghhw.exe:120
   %original file name%.exe:876

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

   C:\AUTOEXEC.BAT .exe (1455811 bytes)
   C:\MSDOS.SYS .exe (1455811 bytes)
   C:\IO.SYS .exe (1455811 bytes)
   C:\boot.ini .exe (1455811 bytes)
   %Documents and Settings% .exe (1455811 bytes)
   C:\RECYCLER .exe (1455811 bytes)
   C:\%original file name%.exe .exe (1455811 bytes)
   C:\ntldr .exe (1455811 bytes)
   C:\original .exe (1455811 bytes)
   C:\totalcmd .exe (1455811 bytes)
   C:\NTDETECT.COM .exe (1455811 bytes)
   C:\System Volume Information .exe (1455811 bytes)
   C:\CONFIG.SYS .exe (1455811 bytes)
   C:\marker .exe (1455811 bytes)
   %Program Files% .exe (1455811 bytes)
   %WinDir% .exe (1455811 bytes)
   C:\pagefile.sys .exe (1455811 bytes)
   %Documents and Settings%\All Users\Application Data\Saaaalamm\Mira.h (542871 bytes)
   %Documents and Settings%\All Users\Application Data\ywghhw.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\ywghhw.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	4.20991	6e04f4777b6402f5466ff0d8bd5705c2

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Total found: 1
3a4f95af3e211a2d3f36b2cb1b6ad954

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

ywghhw.exe_120:

.text

.text

`.data

`.data

.rdata

.rdata

@.bss

@.bss

.idata

.idata

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

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