tofsee | 43c7f3dcdaa26dd8bbd5da79110c58070386e7a0334fa523765d3122ee92ae31

General

Target

JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe
Size

13.5MB
MD5

37ce0ec1b25c9f496f74d90e6d548b46
SHA1

1933f0eafa5d0e2f7935d23ae34b33b7a7772c3c
SHA256

43c7f3dcdaa26dd8bbd5da79110c58070386e7a0334fa523765d3122ee92ae31
SHA512

275d3ce3336fe32e291503ae36e8491eb9ddfa0fa5f9e7e6e46188e4b00e68f56ae70670a005fb544920fce3ee6a7771bdf4e9367378295f896ae458754bea6f
SSDEEP

196608:vwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
3944	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\suibaknf\ImagePath = "C:\\Windows\\SysWOW64\\suibaknf\\cvgwhexq.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe

Deletes itself 1 IoCs

pid	Process
5068	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2360	cvgwhexq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2360 set thread context of 5068	2360	cvgwhexq.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
1752	sc.exe
4140	sc.exe
1444	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2220	3364	WerFault.exe	82
4972	2360	WerFault.exe	94

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	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	cvgwhexq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3364 wrote to memory of 3184	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	83
PID 3364 wrote to memory of 3184	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	83
PID 3364 wrote to memory of 3184	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	83
PID 3364 wrote to memory of 3808	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	85
PID 3364 wrote to memory of 3808	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	85
PID 3364 wrote to memory of 3808	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	85
PID 3364 wrote to memory of 1752	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	88
PID 3364 wrote to memory of 1752	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	88
PID 3364 wrote to memory of 1752	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	88
PID 3364 wrote to memory of 4140	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	90
PID 3364 wrote to memory of 4140	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	90
PID 3364 wrote to memory of 4140	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	90
PID 3364 wrote to memory of 1444	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	92
PID 3364 wrote to memory of 1444	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	92
PID 3364 wrote to memory of 1444	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	92
PID 3364 wrote to memory of 3944	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	95
PID 3364 wrote to memory of 3944	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	95
PID 3364 wrote to memory of 3944	3364	JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe	95
PID 2360 wrote to memory of 5068	2360	cvgwhexq.exe	101
PID 2360 wrote to memory of 5068	2360	cvgwhexq.exe	101
PID 2360 wrote to memory of 5068	2360	cvgwhexq.exe	101
PID 2360 wrote to memory of 5068	2360	cvgwhexq.exe	101
PID 2360 wrote to memory of 5068	2360	cvgwhexq.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3364
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\suibaknf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3184
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cvgwhexq.exe" C:\Windows\SysWOW64\suibaknf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3808
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create suibaknf binPath= "C:\Windows\SysWOW64\suibaknf\cvgwhexq.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description suibaknf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4140
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start suibaknf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1444
- 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:3944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3364 -s 1036
  2⤵
  - Program crash
  PID:2220

C:\Windows\SysWOW64\suibaknf\cvgwhexq.exe
C:\Windows\SysWOW64\suibaknf\cvgwhexq.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37ce0ec1b25c9f496f74d90e6d548b46.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2360 -s 516
  2⤵
  - Program crash
  PID:4972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3364 -ip 3364
1⤵
PID:2392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2360 -ip 2360
1⤵
PID:740

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\cvgwhexq.exe

Filesize
12.6MB

MD5
30fafc972baf74f43564f875016d897a

SHA1
6d9b2095332c01d641b4d6b9b31ea27dbd9fe12b

SHA256
84424dc29a4abdfe9367afd6868182fbc07de35a61f6e9ae83e829cd7dd3f18f

SHA512
2e61990b541c7b4988e958dfc93b44279000e0cec4e94018a149c476e606e1a86ace34611e3e3cf74c0293944c97afdc53a031ef08a38685f9b0b37a5ce8be0c

Download Submit
memory/2360-15-0x0000000000400000-0x0000000002F11000-memory.dmp

Filesize
43.1MB

Download
memory/3364-1-0x00000000032F0000-0x00000000033F0000-memory.dmp

Filesize
1024KB

Download
memory/3364-2-0x00000000032C0000-0x00000000032D3000-memory.dmp

Filesize
76KB

Download
memory/3364-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3364-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3364-9-0x00000000032C0000-0x00000000032D3000-memory.dmp

Filesize
76KB

Download
memory/3364-8-0x0000000000400000-0x0000000002F11000-memory.dmp

Filesize
43.1MB

Download
memory/5068-11-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/5068-13-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/5068-14-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads