Trojan.Win32.Swrort_af48201b9c

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

nprgs.exe:1628
%original file name%.exe:420

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 nprgs.exe:1628 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:\%original file name%.exe .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)
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:\Mirax (0 bytes)
C:\Miray (0 bytes)
C:\Mirav (0 bytes)
C:\Miraw (0 bytes)
C:\Mirap (0 bytes)
C:\Miraq (0 bytes)
C:\Mirar (0 bytes)
C:\Miras (0 bytes)
C:\Miral (0 bytes)
C:\Miram (0 bytes)
C:\Mirao (0 bytes)
C:\Mirae (0 bytes)
C:\Miraf (0 bytes)
C:\Mirac (0 bytes)

The process %original file name%.exe:420 makes changes in the file system.

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

%Documents and Settings%\All Users\Application Data\nprgs.exe (914498 bytes)
%Documents and Settings%\All Users\Application Data\Saaaalamm\Mira.h (542871 bytes)

Registry activity

The process nprgs.exe:1628 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\nprgs.exe"

The process %original file name%.exe:420 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 BF 96 28 D3 49 65 2E 8D 2E AC 0E E7 3E 96 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
52968157ba851a7d88b6ca9ea785f12e	c:\AUTOEXEC.BAT .exe
3066f94379a70a81b76c6a64fcc423b9	c:\CONFIG.SYS .exe
6313a02aee807fcf13004535f4a9ad8c	c:\Documents and Settings .exe
d882647ae95e92c82bd66478d7043df3	c:\Documents and Settings\All Users\Application Data\Saaaalamm\Mira.h
d581fb15ecbd0fba2bf073f10a8d2926	c:\Documents and Settings\All Users\Application Data\nprgs.exe
86829c528a0a3407d46a1c9567316020	c:\IO.SYS .exe
bef7c036d1d6954c0c9c032598ea1ab0	c:\MSDOS.SYS .exe
c8490deaf97894749c95d0e157cb4ac1	c:\NTDETECT.COM .exe
2e43567106b1cdc70f28065c8f30eafc	c:\Perl .exe
d9b42434a0b162d5af7180e41cdc7441	c:\Program Files .exe
3380343b0927cad02af8385c709685ff	c:\RECYCLER .exe
a4cc06abac571fb23713fd71d15f3577	c:\System Volume Information .exe
5eba9af48e4a49019a20599a3c5f4682	c:\WINDOWS .exe
e7588caa027567a26ce43273f568917a	c:\%original file name%.exe .exe
60e768bad8e4232df3c791c1a42d5c36	c:\boot.ini .exe
93a7019141688974087ac944358ea5db	c:\marker .exe
ea7627f5f792e2aa698a52d96dcb8168	c:\ntldr .exe
dfd6eede9738615f22024cdc2a8f125e	c:\original .exe
26d54ce26963febcdbacc41a1e2eb85b	c:\pagefile.sys .exe
247ed940e39027f7ac63f51ad1a64ce0	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):

   nprgs.exe:1628
   %original file name%.exe:420

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:\%original file name%.exe .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)
   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\nprgs.exe (914498 bytes)
   %Documents and Settings%\All Users\Application Data\Saaaalamm\Mira.h (542871 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\nprgs.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	4.19591	431cd5cff76cd21528149bd2669487a0

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

nprgs.exe_1628:

.text

.text

`.data

`.data

.rdata

.rdata

@.bss

@.bss

.idata

.idata

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

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