tofsee | 6aaa238185116b9f6a39fa03c76d598e7417e947925b440ae21f3eff53932ea2

General

Target

136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe
Size

11.9MB
MD5

136c259a22df84eedaa18cdda99ec7d7
SHA1

8fa44d18937b3b5b556b4267513d6a1d969fe44e
SHA256

6aaa238185116b9f6a39fa03c76d598e7417e947925b440ae21f3eff53932ea2
SHA512

a89347a18d77e5b42764b7fc03506b72eb4f7361c5d3fc1baa4830eef36ba446ed601cd75e9e359684ae62bfe5e611be8b918ceb0f67d05ca0dc5f6aa6633d65
SSDEEP

196608:tX//////////////////////////////////////////////////////////////:t//////////////////////////////n

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
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

Processes:

netsh.exe

pid process

2796 netsh.exe

pid	process
2796	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\zmbiqvnx\ImagePath = "C:\\Windows\\SysWOW64\\zmbiqvnx\\ecmkkajz.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

Processes:

136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

228 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

ecmkkajz.exe

pid process

3780 ecmkkajz.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ecmkkajz.exe

description pid process target process

PID 3780 set thread context of 228 3780 ecmkkajz.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2944 sc.exe
2636 sc.exe
4828 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
228	svchost.exe

pid	process
3780	ecmkkajz.exe

description	pid	process	target process
PID 3780 set thread context of 228	3780	ecmkkajz.exe	svchost.exe

pid	process
2944	sc.exe
2636	sc.exe
4828	sc.exe

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

Processes:

netsh.exe

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

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

3796 3256 WerFault.exe 136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe
4988 3780 WerFault.exe ecmkkajz.exe

pid	pid_target	process	target process
3796	3256	WerFault.exe	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe
4988	3780	WerFault.exe	ecmkkajz.exe

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

Processes:

136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.execmd.exesc.exeecmkkajz.execmd.exesc.exesc.exenetsh.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.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	ecmkkajz.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

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exeecmkkajz.exe

description	pid	process	target process
PID 3256 wrote to memory of 3596	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	cmd.exe
PID 3256 wrote to memory of 3596	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	cmd.exe
PID 3256 wrote to memory of 3596	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	cmd.exe
PID 3256 wrote to memory of 3144	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	cmd.exe
PID 3256 wrote to memory of 3144	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	cmd.exe
PID 3256 wrote to memory of 3144	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	cmd.exe
PID 3256 wrote to memory of 2944	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	sc.exe
PID 3256 wrote to memory of 2944	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	sc.exe
PID 3256 wrote to memory of 2944	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	sc.exe
PID 3256 wrote to memory of 2636	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	sc.exe
PID 3256 wrote to memory of 2636	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	sc.exe
PID 3256 wrote to memory of 2636	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	sc.exe
PID 3256 wrote to memory of 4828	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	sc.exe
PID 3256 wrote to memory of 4828	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	sc.exe
PID 3256 wrote to memory of 4828	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	sc.exe
PID 3256 wrote to memory of 2796	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	netsh.exe
PID 3256 wrote to memory of 2796	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	netsh.exe
PID 3256 wrote to memory of 2796	3256	136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe	netsh.exe
PID 3780 wrote to memory of 228	3780	ecmkkajz.exe	svchost.exe
PID 3780 wrote to memory of 228	3780	ecmkkajz.exe	svchost.exe
PID 3780 wrote to memory of 228	3780	ecmkkajz.exe	svchost.exe
PID 3780 wrote to memory of 228	3780	ecmkkajz.exe	svchost.exe
PID 3780 wrote to memory of 228	3780	ecmkkajz.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zmbiqvnx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3596
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ecmkkajz.exe" C:\Windows\SysWOW64\zmbiqvnx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3144
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zmbiqvnx binPath= "C:\Windows\SysWOW64\zmbiqvnx\ecmkkajz.exe /d\"C:\Users\Admin\AppData\Local\Temp\136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2944
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zmbiqvnx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2636
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zmbiqvnx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4828
- 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:2796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3256 -s 1036
  2⤵
  - Program crash
  PID:3796

C:\Windows\SysWOW64\zmbiqvnx\ecmkkajz.exe
C:\Windows\SysWOW64\zmbiqvnx\ecmkkajz.exe /d"C:\Users\Admin\AppData\Local\Temp\136c259a22df84eedaa18cdda99ec7d7_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3780
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3780 -s 532
  2⤵
  - Program crash
  PID:4988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3256 -ip 3256
1⤵
PID:3176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3780 -ip 3780
1⤵
PID:3872

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\ecmkkajz.exe

Filesize
13.7MB

MD5
f5ed5047aa220fc09ad3f7e1b6b83f60

SHA1
533202c285c78c4a68308fb19b90667fb77620cb

SHA256
e52bb3fdbb3cf8eb6e677feb8680a18c0b17130bac5f9d8e9095d7f2f7f1163c

SHA512
c0fd85b54685d4f4fe0c63b452c70c2e90715c6230d7a107eb3892fc1b596569b60ee693e94e7eb0da46fe4796456fb4356f553f2d0db640430cb503bd0a3b57

Download Submit
memory/228-14-0x00000000009A0000-0x00000000009B5000-memory.dmp

Filesize
84KB

Download
memory/228-17-0x00000000009A0000-0x00000000009B5000-memory.dmp

Filesize
84KB

Download
memory/228-16-0x00000000009A0000-0x00000000009B5000-memory.dmp

Filesize
84KB

Download
memory/3256-8-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/3256-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3256-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3256-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3256-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3256-1-0x00000000006A0000-0x00000000007A0000-memory.dmp

Filesize
1024KB

Download
memory/3780-12-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/3780-11-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/3780-13-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/3780-18-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads