Gen.Heur.Minggy.1_afdba4f640

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

pydtc.exe:1524
%original file name%.exe:748

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 pydtc.exe:1524 makes changes in the file system.

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

C:\AUTOEXEC.BAT .exe (1025280 bytes)
C:\MSDOS.SYS .exe (1025280 bytes)
C:\IO.SYS .exe (1025280 bytes)
C:\boot.ini .exe (1025280 bytes)
%Documents and Settings% .exe (1025280 bytes)
C:\RECYCLER .exe (1025280 bytes)
C:\ntldr .exe (1025280 bytes)
C:\%original file name%.exe .exe (1025280 bytes)
C:\original .exe (1025280 bytes)
C:\totalcmd .exe (1025280 bytes)
C:\NTDETECT.COM .exe (1025280 bytes)
C:\System Volume Information .exe (1025280 bytes)
C:\CONFIG.SYS .exe (1025280 bytes)
C:\marker .exe (1025280 bytes)
%Program Files% .exe (1025280 bytes)
%WinDir% .exe (1025280 bytes)
C:\pagefile.sys .exe (1025280 bytes)

The Trojan deletes the following file(s):

C:\Miray (0 bytes)
C:\Mirat (0 bytes)
C:\Mirau (0 bytes)
C:\Mirav (0 bytes)
C:\Mirap (0 bytes)
C:\Miraq (0 bytes)
C:\Mirar (0 bytes)
C:\Miras (0 bytes)
C:\Miram (0 bytes)
C:\Mirao (0 bytes)
C:\Mirai (0 bytes)
C:\Miraa (0 bytes)
C:\Mirac (0 bytes)

The process %original file name%.exe:748 makes changes in the file system.

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

%Documents and Settings%\All Users\Application Data\pydtc.exe (510719 bytes)
%Documents and Settings%\All Users\Application Data\Saaaalamm\Mira.h (512410 bytes)

Registry activity

The process pydtc.exe:1524 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\pydtc.exe"

The process %original file name%.exe:748 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D1 FC 69 62 36 7F EC 1B C6 13 76 C0 2A B4 EB 09"

[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
653a4362eb612e771eeb97c6dfc04b6a	c:\AUTOEXEC.BAT .exe
c8738d7590ebe236a60a34e0a88ccff7	c:\CONFIG.SYS .exe
7ac8b4735909d1e2c24fec13c9ad0239	c:\Documents and Settings .exe
3835a08a15685057f0c784aa5e556038	c:\Documents and Settings\All Users\Application Data\Saaaalamm\Mira.h
486a97655a4b81a983ef91a1a3d41207	c:\Documents and Settings\All Users\Application Data\pydtc.exe
cb1413c12d7c8032baa0f66e863de872	c:\IO.SYS .exe
c3e2f3d0d5e36a96b5d144ea9538e69c	c:\MSDOS.SYS .exe
153647b47b34cdfc7525eaa03a2d028f	c:\NTDETECT.COM .exe
50d54bff2eb6a5eccf6ddf2107b189ba	c:\Perl .exe
ef265c8d3285e6e2d546481c787149cd	c:\Program Files .exe
c5b75593a2e385cc226ac7b35cfd2f5a	c:\RECYCLER .exe
4a793c2bc4feb057efadde335df1ec34	c:\System Volume Information .exe
e96260725bbc2c11e016346326669ff8	c:\WINDOWS .exe
458554b3092ae48634b2aa7b5b8fcd3e	c:\%original file name%.exe .exe
ef7e270158f04255eb2c84e721e448ec	c:\boot.ini .exe
ad28fbd55b1b5ff8f7db34ddf6f23d27	c:\marker .exe
f00f2b17d89c4cd1e3d7f41c8cce9b80	c:\ntldr .exe
d6a5a78a2420b69805818fbb95eb8b03	c:\original .exe
7a9f921decf296cc7ab5d2f8970d4051	c:\pagefile.sys .exe
7d9f73523857a3f4f59cfb7099466938	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):

   pydtc.exe:1524
   %original file name%.exe:748

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

   C:\AUTOEXEC.BAT .exe (1025280 bytes)
   C:\MSDOS.SYS .exe (1025280 bytes)
   C:\IO.SYS .exe (1025280 bytes)
   C:\boot.ini .exe (1025280 bytes)
   %Documents and Settings% .exe (1025280 bytes)
   C:\RECYCLER .exe (1025280 bytes)
   C:\ntldr .exe (1025280 bytes)
   C:\%original file name%.exe .exe (1025280 bytes)
   C:\original .exe (1025280 bytes)
   C:\totalcmd .exe (1025280 bytes)
   C:\NTDETECT.COM .exe (1025280 bytes)
   C:\System Volume Information .exe (1025280 bytes)
   C:\CONFIG.SYS .exe (1025280 bytes)
   C:\marker .exe (1025280 bytes)
   %Program Files% .exe (1025280 bytes)
   %WinDir% .exe (1025280 bytes)
   C:\pagefile.sys .exe (1025280 bytes)
   %Documents and Settings%\All Users\Application Data\pydtc.exe (510719 bytes)
   %Documents and Settings%\All Users\Application Data\Saaaalamm\Mira.h (512410 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\pydtc.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	4.78706	3c236293ea4ef5b9e95ae7ce204516a9

Dropped from:

f74a51f04a8679694bfde310e88816c8

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

pydtc.exe_1524:

.text

.text

`.data

`.data

.rdata

.rdata

@.bss

@.bss

.idata

.idata

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

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