Gen.Variant.FAkeAlert.105_e50b60be32

Dynamic Analysis

Payload

Behaviour	Description
EmailWorm	Worm can send e-mails.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:420

The Trojan injects its code into the following process(es):

JSB.exe:500

Mutexes

The following mutexes were created/opened:No objects were found.

File activity

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

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

%System%\CEQHXI\JSB.01 (81 bytes)
%System%\CEQHXI\JSB.02 (56 bytes)
%System%\CEQHXI\JSB.00 (2 bytes)
%System%\CEQHXI\JSB.exe (15801 bytes)

Registry activity

The process JSB.exe:500 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "8E 90 F6 2D C1 A0 16 11 6D AD E8 20 2A A9 A9 AF"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Programs" = "%Documents and Settings%\All Users\Start Menu\Programs"

[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\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Personal" = "%Documents and Settings%\%current user%\My Documents"

To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"JSB Start" = "%System%\CEQHXI\JSB.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" = "E1 FE 48 98 F0 1D C4 69 7A 62 0F 39 8E 2B 95 48"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Desktop" = "%Documents and Settings%\%current user%\Desktop"

[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\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%System%\CEQHXI]
"JSB.exe" = "JSB"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Personal" = "%Documents and Settings%\%current user%\My Documents"

The Trojan modifies IE settings for security zones to map all urls to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"

The Trojan modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

"UNCAsIntranet" = "1"

The Trojan modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:

"ProxyBypass" = "1"

Dropped PE files

MD5	File path
7059cdba57a398f80a9afd3de0ffbd07	c:\WINDOWS\system32\CEQHXI\JSB.01
def249d7a5f5aa0ae0caf1d3b9700171	c:\WINDOWS\system32\CEQHXI\JSB.02
3d09e558be6c81f8e5fdde46888944d6	c:\WINDOWS\system32\CEQHXI\JSB.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

Removals

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	40340	40448	4.79593	81e45a5c05115536674bbb4173bba1a8
.rdata	45056	9232	9728	3.72834	02fe36e76de5cc9f834ba0e75c9a5052
.data	57344	8032	3584	1.58991	d4668da877d58af66239b78e3837253f
.rsrc	65536	2057336	2057728	5.33162	f1d036bef8a2357db7789fea8fb89655
.reloc	2125824	4752	5120	2.51801	c1c353bf28dd868ed81faaad547dfa87

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

JSB.exe_500:

.text

.text

`.rdata

`.rdata

@.data

@.data

.rsrc

.rsrc

udPh

udPh

PSSSSSSh

PSSSSSSh

PSSSSSSh!

PSSSSSSh!

vSSSh

vSSSh

FTPjK

FTPjK

FtPj;

FtPj;

C.PjRV

C.PjRV

tGHt.Ht&

tGHt.Ht&

.EKSWU

.EKSWU

FTPG

FTPG

FTPj

FTPj

FtPS

FtPS

H%x\U

H%x\U

H%x]U

H%x]U

=KNILw.tT=RCNEw

=KNILw.tT=RCNEw

_0 _8 _4;_,

_0 _8 _4;_,

SHA1 block transform for x86, CRYPTOGAMS by <appro></appro>

SHA1 block transform for x86, CRYPTOGAMS by <appro></appro>

SHA256 block transform for x86, CRYPTOGAMS by <appro></appro>

SHA256 block transform for x86, CRYPTOGAMS by <appro></appro>

DlSHA512 block transform for x86, CRYPTOGAMS by <appro></appro>

DlSHA512 block transform for x86, CRYPTOGAMS by <appro></appro>

Montgomery Multiplication for x86, CRYPTOGAMS by <appro></appro>

Montgomery Multiplication for x86, CRYPTOGAMS by <appro></appro>

6-9'6-9'

6-9'6-9'

$6.:$6.:

$6.:$6.:

*?#1*?#1

*?#1*?#1

>8$4,8$4,

>8$4,8$4,

AES for x86, CRYPTOGAMS by <appro></appro>

AES for x86, CRYPTOGAMS by <appro></appro>

Camellia for x86 by <appro></appro>

Camellia for x86 by <appro></appro>

RC4 for x86, CRYPTOGAMS by <appro></appro>

RC4 for x86, CRYPTOGAMS by <appro></appro>

FRegDeleteKeyExW

FRegDeleteKeyExW

MARGIN-BOTTOM: 11px; BORDER-STYLE: solid; BORDER-COLOR: #DFDFE5; BORDER-WIDTH: 2px; BACKGROUND-COLOR: #DFDFE5; }H2 { COLOR: black; BACKGROUND-COLOR: #FFFFF; FONT-SIZE: 12pt; FONT-WEIGHT: normal; MARGIN-BOTTOM: 0px; MARGIN-TOP: 10px;}