Gen.Trojan.Heur.9y1vqu9UYmi_5cbf2d650b

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

brnuy.exe:2472
%original file name%.exe:1264

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 brnuy.exe:2472 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:\%original file name%.exe .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:\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:\Mirat (0 bytes)
C:\Mirau (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:\Mirah (0 bytes)
C:\Mirai (0 bytes)
C:\Mirak (0 bytes)
C:\Miraf (0 bytes)
C:\Mirag (0 bytes)
C:\Mirac (0 bytes)

The process %original file name%.exe:1264 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\brnuy.exe (1020101 bytes)

Registry activity

The process brnuy.exe:2472 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\brnuy.exe"

Dropped PE files

MD5	File path
befe671f5760e134cb0334a69ecaf3f1	c:\$Recycle.Bin .exe
9b64d3d964c61f7ff07a1ced265b62f5	c:\%original file name%.exe .exe
0e3f0302ec68e0d0f5b578f9df72e49b	c:\BOOTSECT.BAK .exe
5ae73a140c5c3d054ea45a835c1098be	c:\Boot .exe
c4aadd7c8aecf1b2c451816772738a44	c:\Documents and Settings .exe
ab82c34a08d87a6e0715cc794d9014c1	c:\Perl .exe
9295b5c23cf1879ad154601b24109484	c:\Program Files .exe
36a4489b2fbe69514acf9c70d42dab14	c:\ProgramData .exe
2549139ceeb2c40c2ea0aeb04527d833	c:\ProgramData\Saaaalamm\Mira.h
9f1d616a42d5e095f98f98a1d2a8d916	c:\ProgramData\brnuy.exe
1f0c3c11ccb98b464533bf4654e34770	c:\System Volume Information .exe
03a8dc520fda51f1da906e6ecc1fdd01	c:\Users .exe
2549139ceeb2c40c2ea0aeb04527d833	c:\Users\All Users\Saaaalamm\Mira.h
9f1d616a42d5e095f98f98a1d2a8d916	c:\Users\All Users\brnuy.exe
501b416129c0ece13a74593711efcc14	c:\Windows .exe
9d162da6c62018db9859c50c369d38bf	c:\XELDZ .exe
7dbc095a6aaef893da0c9382a84c7240	c:\autoexec.bat .exe
dfdca68e5e0fe939761b8bb778933826	c:\bootmgr .exe
64c59dca66939f8efe8f462405820891	c:\config.sys .exe
8854af6ccf6e4b037f40a0f48c22b6e8	c:\marker .exe
8eab3e5dcf24f64cb39392a5a3249288	c:\original .exe
cb0acebcfc8a687c392138b8f3eb1e4d	c:\pagefile.sys .exe
a37b86e67ac5b844d58c7d3d4e695923	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):

   brnuy.exe:2472
   %original file name%.exe:1264

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:\%original file name%.exe .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:\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\brnuy.exe (1020101 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\brnuy.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	750829	4.90599	5a15222d9f219f776c7ab2c78f7d9b0d

Dropped from:

58f90ced3608ddc05348313f10dc5e81

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

brnuy.exe_2472:

.text

.text

`.data

`.data

.rdata

.rdata

@.bss

@.bss

.idata

.idata

C:\ProgramData\brnuy.exe

C:\ProgramData\brnuy.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