Gen.Variant.Zusy.92246_0176d88bae

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:228
etxgb.exe:188

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 %original file name%.exe:228 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\etxgb.exe (914498 bytes)

The process etxgb.exe:188 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:\ntldr .exe (1455811 bytes)
C:\original .exe (1455811 bytes)
C:\totalcmd .exe (1455811 bytes)
C:\NTDETECT.COM .exe (1455811 bytes)
%WinDir% .exe (1455811 bytes)
C:\CONFIG.SYS .exe (1455811 bytes)
C:\marker .exe (1455811 bytes)
%Program Files% .exe (1455811 bytes)
C:\System Volume Information .exe (1455811 bytes)
C:\%original file name%.exe .exe (1455811 bytes)
C:\pagefile.sys .exe (1455811 bytes)

The Trojan deletes the following file(s):

C:\Mirax (0 bytes)
C:\Miray (0 bytes)
C:\Mirat (0 bytes)
C:\Mirau (0 bytes)
C:\Miraq (0 bytes)
C:\Mirar (0 bytes)
C:\Miras (0 bytes)
C:\Miram (0 bytes)
C:\Miran (0 bytes)
C:\Mirah (0 bytes)
C:\Mirai (0 bytes)
C:\Miraj (0 bytes)
C:\Mirak (0 bytes)
C:\Mirad (0 bytes)
C:\Mirab (0 bytes)
C:\Mirac (0 bytes)

Registry activity

The process %original file name%.exe:228 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "8A 3D F6 7B 07 11 66 53 7B D8 E1 3B 5B 73 42 C4"

[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"

The process etxgb.exe:188 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\etxgb.exe"

Dropped PE files

MD5	File path
62010d73659a0c92bad988b8e810dd87	c:\%original file name%.exe .exe
04257a16df636f363a2201331a88d999	c:\AUTOEXEC.BAT .exe
870a1d92c69b9102537bfd3868fdfb4c	c:\CONFIG.SYS .exe
1620a821581a2b1ef20222b5a8ec7a5e	c:\Documents and Settings .exe
d882647ae95e92c82bd66478d7043df3	c:\Documents and Settings\All Users\Application Data\Saaaalamm\Mira.h
06ceafcb6ef042ef7c7e1fd4a63bc9b8	c:\Documents and Settings\All Users\Application Data\etxgb.exe
963bf62a465b81f7e44cf87b355e7979	c:\IO.SYS .exe
3b21d202309ac26959f57933ccf0e27f	c:\MSDOS.SYS .exe
5b76a924739bdbe573e05a2abf5d5297	c:\NTDETECT.COM .exe
e9246c671dbedcc67a8003528fb1f1a5	c:\Perl .exe
2575c781c0756ec241120c5f0ce394f7	c:\Program Files .exe
48b8a729379db4141aba5b43528df3f9	c:\RECYCLER .exe
2ac987acd924644b0b02a42b5873aff4	c:\System Volume Information .exe
1d46fcde60bc15cff990278170dad1ba	c:\WINDOWS .exe
236c01a92672766c100ee2460b6cd945	c:\boot.ini .exe
883b7eebec3f461433373e0d4f2d3b7f	c:\marker .exe
bda82dd33bbaf9d1908f35e0cbbb6686	c:\ntldr .exe
1f55276ac349e2f8a08c8408afe55acd	c:\original .exe
31cabfd321a8b448ed999b21e9946a80	c:\pagefile.sys .exe
a613e9ad4336fe42ec051d628e8a11f7	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):

   %original file name%.exe:228
   etxgb.exe:188

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

   %Documents and Settings%\All Users\Application Data\Saaaalamm\Mira.h (542871 bytes)
   %Documents and Settings%\All Users\Application Data\etxgb.exe (914498 bytes)
   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:\ntldr .exe (1455811 bytes)
   C:\original .exe (1455811 bytes)
   C:\totalcmd .exe (1455811 bytes)
   C:\NTDETECT.COM .exe (1455811 bytes)
   %WinDir% .exe (1455811 bytes)
   C:\CONFIG.SYS .exe (1455811 bytes)
   C:\marker .exe (1455811 bytes)
   %Program Files% .exe (1455811 bytes)
   C:\System Volume Information .exe (1455811 bytes)
   C:\%original file name%.exe .exe (1455811 bytes)
   C:\pagefile.sys .exe (1455811 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\etxgb.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	4.20546	049cf174dfec90be7cec7b79eee87b5b

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Total found: 2
2222f00404e91089f7f3d33478509e20
dc9c759b06610acd92a0857cfd4ba600

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

etxgb.exe_188:

.text

.text

`.data

`.data

.rdata

.rdata

@.bss

@.bss

.idata

.idata

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

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