Gen.Heur.Minggy.1_caba5ea90d

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:388
siyqf.exe:484

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:388 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 (510598 bytes)
%Documents and Settings%\All Users\Application Data\siyqf.exe (515770 bytes)

The process siyqf.exe:484 makes changes in the file system.

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

C:\AUTOEXEC.BAT .exe (1027488 bytes)
C:\MSDOS.SYS .exe (1027488 bytes)
C:\IO.SYS .exe (1027488 bytes)
C:\%original file name%.exe .exe (1027488 bytes)
C:\boot.ini .exe (1027488 bytes)
%Documents and Settings% .exe (1027488 bytes)
C:\RECYCLER .exe (1027488 bytes)
C:\ntldr .exe (1027488 bytes)
C:\original .exe (1027488 bytes)
C:\totalcmd .exe (1027488 bytes)
C:\NTDETECT.COM .exe (1027488 bytes)
C:\System Volume Information .exe (1027488 bytes)
C:\CONFIG.SYS .exe (1027488 bytes)
C:\marker .exe (1027488 bytes)
%Program Files% .exe (1027488 bytes)
%WinDir% .exe (1027488 bytes)
C:\pagefile.sys .exe (1027488 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:\Mirav (0 bytes)
C:\Miraw (0 bytes)
C:\Mirap (0 bytes)
C:\Miraq (0 bytes)
C:\Mirar (0 bytes)
C:\Miral (0 bytes)
C:\Miran (0 bytes)
C:\Mirao (0 bytes)
C:\Mirah (0 bytes)
C:\Mirae (0 bytes)
C:\Miraa (0 bytes)
C:\Mirab (0 bytes)

Registry activity

The process %original file name%.exe:388 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "82 54 C6 91 18 58 11 A3 69 F2 7E FA DF C8 6C C9"

[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 siyqf.exe:484 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\siyqf.exe"

Dropped PE files

MD5	File path
886f30f72f62215d4c559ddea9cddbd3	c:\AUTOEXEC.BAT .exe
9aff44b476d9ffbfac9ec3754f97d0e8	c:\CONFIG.SYS .exe
19f1935bc24e47618610e568c7d20fad	c:\Documents and Settings .exe
2bd49e4c9fbecf78119ba07b3e85f02c	c:\Documents and Settings\All Users\Application Data\Saaaalamm\Mira.h
f3ea3f0b90df1c718ed941dcf34ec4ad	c:\Documents and Settings\All Users\Application Data\siyqf.exe
547ea46dbc5419479c5d9275b7e8b911	c:\IO.SYS .exe
7fbb7b49276653262e665536ba70f5f1	c:\MSDOS.SYS .exe
d1e19b22a0a8162d6a86223d9715ad27	c:\NTDETECT.COM .exe
d8bdcbce2a848a42ae42677520448052	c:\Perl .exe
671c7256ad4d393d27ce21d635d0cb18	c:\Program Files .exe
34fe48b9c913fb82b59c78451b4083b2	c:\RECYCLER .exe
edac8a32e9aeed9d003745d6a5e15a03	c:\System Volume Information .exe
b0a84fcedc87b87190e6446c0d04d4d1	c:\WINDOWS .exe
4d5883c968994bb36dca8d4d65d2cf9c	c:\boot.ini .exe
bba4dc659cd1ec0f9b05879982ef4893	c:\%original file name%.exe .exe
c7e5bc43ab0f47e8724701ab4eda6aa7	c:\marker .exe
1ebecec1ae1f6a07ac0e62f73df74865	c:\ntldr .exe
4451a0a3e452abd7008da37b2e70cdfb	c:\original .exe
db1142d88f7222a46120cf102d4a54c8	c:\pagefile.sys .exe
1eba2b1de161deb1a22b46dbeead7834	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:388
   siyqf.exe:484

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 (510598 bytes)
   %Documents and Settings%\All Users\Application Data\siyqf.exe (515770 bytes)
   C:\AUTOEXEC.BAT .exe (1027488 bytes)
   C:\MSDOS.SYS .exe (1027488 bytes)
   C:\IO.SYS .exe (1027488 bytes)
   C:\%original file name%.exe .exe (1027488 bytes)
   C:\boot.ini .exe (1027488 bytes)
   %Documents and Settings% .exe (1027488 bytes)
   C:\RECYCLER .exe (1027488 bytes)
   C:\ntldr .exe (1027488 bytes)
   C:\original .exe (1027488 bytes)
   C:\totalcmd .exe (1027488 bytes)
   C:\NTDETECT.COM .exe (1027488 bytes)
   C:\System Volume Information .exe (1027488 bytes)
   C:\CONFIG.SYS .exe (1027488 bytes)
   C:\marker .exe (1027488 bytes)
   %Program Files% .exe (1027488 bytes)
   %WinDir% .exe (1027488 bytes)
   C:\pagefile.sys .exe (1027488 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\siyqf.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	4.85112	59b911366d7806b51b375ed7b8e61027

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

siyqf.exe_484:

.text

.text

`.data

`.data

.rdata

.rdata

@.bss

@.bss

.idata

.idata

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

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