Gen.Trojan.Heur.9y1vqu9UYmi_c5d71c6950

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

dlksf.exe:1480
%original file name%.exe:3572

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 dlksf.exe:1480 makes changes in the file system.

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

C:\original .exe (1963131 bytes)
C:\config.sys .exe (1963131 bytes)
C:\bootmgr .exe (1963131 bytes)
C:\Boot .exe (1963131 bytes)
C:\Windows .exe (1963131 bytes)
C:\ProgramData .exe (1963131 bytes)
C:\$Recycle.Bin .exe (1963131 bytes)
C:\BOOTSECT.BAK .exe (1963131 bytes)
%Documents and Settings% .exe (1963131 bytes)
C:\%original file name%.exe .exe (1963131 bytes)
C:\totalcmd .exe (1963131 bytes)
C:\Users .exe (1963131 bytes)
C:\XELDZ .exe (1963131 bytes)
C:\autoexec.bat .exe (1963131 bytes)
C:\System Volume Information .exe (1963131 bytes)
C:\marker .exe (1963131 bytes)
%Program Files% .exe (1963131 bytes)
C:\pagefile.sys .exe (1963131 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:\Miras (0 bytes)
C:\Miran (0 bytes)
C:\Mirah (0 bytes)
C:\Miraj (0 bytes)
C:\Mirak (0 bytes)
C:\Miraf (0 bytes)
C:\Mirag (0 bytes)
C:\Miraa (0 bytes)

The process %original file name%.exe:3572 makes changes in the file system.

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

C:\ProgramData\Saaaalamm\Mira.h (960208 bytes)
C:\ProgramData\dlksf.exe (1019323 bytes)

Registry activity

The process dlksf.exe:1480 makes changes in the system registry.

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

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" = "C:\ProgramData\dlksf.exe"

Dropped PE files

MD5	File path
b57b47b326139a1bd0ec33cc69ca2297	c:\$Recycle.Bin .exe
42172b05c1ddd812b059112131f3bf8a	c:\BOOTSECT.BAK .exe
2f8539679387662f5b128d188f5463f6	c:\Boot .exe
7fd5f9c00f1c1035baaf6e5e602e7e95	c:\Documents and Settings .exe
f7f14bffdb4f56842e136c34a28b18c2	c:\Perl .exe
4c9b1214431b2fa9c9bd12847e6a140c	c:\Program Files .exe
b32d62186a2997c847a05f0bdc673318	c:\ProgramData .exe
2549139ceeb2c40c2ea0aeb04527d833	c:\ProgramData\Saaaalamm\Mira.h
4ae3958232ad0cefba9e36b08e5cce48	c:\ProgramData\dlksf.exe
ae60b4aa36814a355e7e53fdd11ee94b	c:\System Volume Information .exe
3e3865ec6c7a44049f697d53873f7fd8	c:\Users .exe
2549139ceeb2c40c2ea0aeb04527d833	c:\Users\All Users\Saaaalamm\Mira.h
4ae3958232ad0cefba9e36b08e5cce48	c:\Users\All Users\dlksf.exe
da5154460f3ca14a3f4589a50a949d6b	c:\Windows .exe
35e79fca891bf76738e35a15f3d4fa00	c:\XELDZ .exe
839cf395aea3a42d6b3d99053e763945	c:\autoexec.bat .exe
d81e46b61e65367a88c4f9c20ce2fc0a	c:\bootmgr .exe
8a9f7f8bc9f490e8abba78ced20d62e3	c:\%original file name%.exe .exe
e9c7d1d065f9ee93580be6512846f927	c:\config.sys .exe
caf0f2e70494d8eab9b74eb7435404d7	c:\marker .exe
867dda587092508c9ed7ddbcb1e58144	c:\original .exe
5f1a7971597dffc9347d398035c16046	c:\pagefile.sys .exe
1cf4537cb766fc8d79d00934bcec0388	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):

   dlksf.exe:1480
   %original file name%.exe:3572

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

   C:\original .exe (1963131 bytes)
   C:\config.sys .exe (1963131 bytes)
   C:\bootmgr .exe (1963131 bytes)
   C:\Boot .exe (1963131 bytes)
   C:\Windows .exe (1963131 bytes)
   C:\ProgramData .exe (1963131 bytes)
   C:\$Recycle.Bin .exe (1963131 bytes)
   C:\BOOTSECT.BAK .exe (1963131 bytes)
   %Documents and Settings% .exe (1963131 bytes)
   C:\%original file name%.exe .exe (1963131 bytes)
   C:\totalcmd .exe (1963131 bytes)
   C:\Users .exe (1963131 bytes)
   C:\XELDZ .exe (1963131 bytes)
   C:\autoexec.bat .exe (1963131 bytes)
   C:\System Volume Information .exe (1963131 bytes)
   C:\marker .exe (1963131 bytes)
   %Program Files% .exe (1963131 bytes)
   C:\pagefile.sys .exe (1963131 bytes)
   C:\ProgramData\Saaaalamm\Mira.h (960208 bytes)
   C:\ProgramData\dlksf.exe (1019323 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" = "C:\ProgramData\dlksf.exe"

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

Static Analysis

VersionInfo

Company Name: Microsoft Corporation
Product Name: Mira Malware
Product Version: 1.0.0.155
Legal Copyright: Microsoft Corporation
Legal Trademarks:
Original Filename:
Internal Name:
File Version: 1.0.0.155
File Description: Mira Malware
Comments:
Language: Language Neutral

Company Name: Microsoft CorporationProduct Name: Mira MalwareProduct Version: 1.0.0.155Legal Copyright: Microsoft CorporationLegal Trademarks: Original Filename: Internal Name: File Version: 1.0.0.155File Description: Mira MalwareComments: Language: Language Neutral

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	758300	750827	4.8977	6ac96cf61f4af64de80d1fa635d58748

Dropped from:

2f6fb4894885ffa0aaa886c79216e5d1

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

dlksf.exe_1480:

.text

.text

`.data

`.data

.rdata

.rdata

@.bss

@.bss

.idata

.idata

C:\ProgramData\dlksf.exe

C:\ProgramData\dlksf.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