tofsee | bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b

General

Target

JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe
Size

270KB
MD5

65b27135bb9e44c1ea0e921b22370b4e
SHA1

325060bd1ece1f550e7309b1bd34547101c6fd6a
SHA256

bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b
SHA512

dbc5a27b1838f7d2bf76f2f20f02f3a717b6b51c6fc58ca58686e6fdd3422528e2b1471c68c472561783987678e2e2994c49a01748d03151793ac16f963df4cb
SSDEEP

6144:esrDGeKy2Q9ggLseGgCy9MoZ+QVqQmXdIU11:h+y2Q9ggLavy+oZLnE+y

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4388	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\xeckzvbs\ImagePath = "C:\\Windows\\SysWOW64\\xeckzvbs\\lxspwvvj.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe

Deletes itself 1 IoCs

pid	Process
3520	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2944	lxspwvvj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2944 set thread context of 3520	2944	lxspwvvj.exe	98

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
888	sc.exe
932	sc.exe
3612	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3064	2588	WerFault.exe	81
4164	2944	WerFault.exe	92

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lxspwvvj.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2588 wrote to memory of 1124	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	82
PID 2588 wrote to memory of 1124	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	82
PID 2588 wrote to memory of 1124	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	82
PID 2588 wrote to memory of 4064	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	84
PID 2588 wrote to memory of 4064	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	84
PID 2588 wrote to memory of 4064	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	84
PID 2588 wrote to memory of 3612	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	86
PID 2588 wrote to memory of 3612	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	86
PID 2588 wrote to memory of 3612	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	86
PID 2588 wrote to memory of 888	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	88
PID 2588 wrote to memory of 888	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	88
PID 2588 wrote to memory of 888	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	88
PID 2588 wrote to memory of 932	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	90
PID 2588 wrote to memory of 932	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	90
PID 2588 wrote to memory of 932	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	90
PID 2588 wrote to memory of 4388	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	93
PID 2588 wrote to memory of 4388	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	93
PID 2588 wrote to memory of 4388	2588	JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe	93
PID 2944 wrote to memory of 3520	2944	lxspwvvj.exe	98
PID 2944 wrote to memory of 3520	2944	lxspwvvj.exe	98
PID 2944 wrote to memory of 3520	2944	lxspwvvj.exe	98
PID 2944 wrote to memory of 3520	2944	lxspwvvj.exe	98
PID 2944 wrote to memory of 3520	2944	lxspwvvj.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2588
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xeckzvbs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1124
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lxspwvvj.exe" C:\Windows\SysWOW64\xeckzvbs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4064
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xeckzvbs binPath= "C:\Windows\SysWOW64\xeckzvbs\lxspwvvj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3612
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xeckzvbs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:888
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xeckzvbs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:932
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:4388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2588 -s 596
  2⤵
  - Program crash
  PID:3064

C:\Windows\SysWOW64\xeckzvbs\lxspwvvj.exe
C:\Windows\SysWOW64\xeckzvbs\lxspwvvj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bed95c3c7b9d573d93e2de96c4543078346e7ec0ed38022b72d2be9588792f6b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2944
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3520
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2944 -s 528
  2⤵
  - Program crash
  PID:4164

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2588 -ip 2588
1⤵
PID:2080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2944 -ip 2944
1⤵
PID:3736

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\lxspwvvj.exe

Filesize
13.4MB

MD5
bd029a0930cab8efca5f72b53741f2a0

SHA1
7717e46fc510365f07fe73649b451d49cd484aaf

SHA256
0c13096657d4bc15227edad9574897bfad08b71db949f52b74eadc0c29f3066e

SHA512
f4ba11e5c67bddcb9ef222a7d0a4fcbbd3281b41343c23f708a2c9c621af830f9abf1f29a201c0e138fee4e0384623c6424ec9cc81b30cee1a52e63059bc4fc0

Download Submit
memory/2588-8-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2588-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2588-2-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/2588-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2588-9-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/2588-1-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download
memory/2944-11-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2944-12-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2944-17-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3520-13-0x0000000000FE0000-0x0000000000FF5000-memory.dmp

Filesize
84KB

Download
memory/3520-15-0x0000000000FE0000-0x0000000000FF5000-memory.dmp

Filesize
84KB

Download
memory/3520-16-0x0000000000FE0000-0x0000000000FF5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads