tofsee | 8876921b3b4465d0430de048d2334f8822d8f82044b45ed9f6098654176e2f8b

General

Target

JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe
Size

11.7MB
MD5

0eb6b0fc3422af428901ae2040613dd2
SHA1

fcef32de3aba48092800cd8c555e7be0582b8576
SHA256

8876921b3b4465d0430de048d2334f8822d8f82044b45ed9f6098654176e2f8b
SHA512

5dc480eb4a8e3f594a40d74154124e9cc78b8abe475b3f476726428cfa8ad6ebcad6164b71c72c536cd7629c987151a3b9616d6395f69bce9075025aaa13f8b7
SSDEEP

6144:8gZQZcij488Ua7qY57rMzCo8AqtSRV+a1Q:bZij488UaWYMzB5HRV+g

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
2636	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\fpsnkzit\ImagePath = "C:\\Windows\\SysWOW64\\fpsnkzit\\seqyyjyg.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe

Deletes itself 1 IoCs

pid	Process
3944	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3668	seqyyjyg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3668 set thread context of 3944	3668	seqyyjyg.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4124	sc.exe
2980	sc.exe
516	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
184	4912	WerFault.exe	81
224	3668	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	cmd.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	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	seqyyjyg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 1496	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	82
PID 4912 wrote to memory of 1496	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	82
PID 4912 wrote to memory of 1496	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	82
PID 4912 wrote to memory of 3920	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	84
PID 4912 wrote to memory of 3920	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	84
PID 4912 wrote to memory of 3920	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	84
PID 4912 wrote to memory of 516	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	86
PID 4912 wrote to memory of 516	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	86
PID 4912 wrote to memory of 516	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	86
PID 4912 wrote to memory of 4124	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	88
PID 4912 wrote to memory of 4124	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	88
PID 4912 wrote to memory of 4124	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	88
PID 4912 wrote to memory of 2980	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	90
PID 4912 wrote to memory of 2980	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	90
PID 4912 wrote to memory of 2980	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	90
PID 4912 wrote to memory of 2636	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	93
PID 4912 wrote to memory of 2636	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	93
PID 4912 wrote to memory of 2636	4912	JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe	93
PID 3668 wrote to memory of 3944	3668	seqyyjyg.exe	98
PID 3668 wrote to memory of 3944	3668	seqyyjyg.exe	98
PID 3668 wrote to memory of 3944	3668	seqyyjyg.exe	98
PID 3668 wrote to memory of 3944	3668	seqyyjyg.exe	98
PID 3668 wrote to memory of 3944	3668	seqyyjyg.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4912
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fpsnkzit\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1496
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\seqyyjyg.exe" C:\Windows\SysWOW64\fpsnkzit\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fpsnkzit binPath= "C:\Windows\SysWOW64\fpsnkzit\seqyyjyg.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fpsnkzit "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4124
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fpsnkzit
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2980
- 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:2636
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4912 -s 1036
  2⤵
  - Program crash
  PID:184

C:\Windows\SysWOW64\fpsnkzit\seqyyjyg.exe
C:\Windows\SysWOW64\fpsnkzit\seqyyjyg.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0eb6b0fc3422af428901ae2040613dd2.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3668
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3668 -s 512
  2⤵
  - Program crash
  PID:224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4912 -ip 4912
1⤵
PID:4604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3668 -ip 3668
1⤵
PID:1868

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\seqyyjyg.exe

Filesize
10.0MB

MD5
39cabe22f5d5219f36496c9fa3906216

SHA1
190161b580466da62d1584e0c63ad1fedd9430f4

SHA256
82b2e37c3d69ec74546db8dca63cad1eb4c098fc010e63d51357d578757ca16d

SHA512
c37b05ffe5d48afb38022ef69b0bd89871c039e13384b1be8863f408c333efa4fa07f0d3f8ec10945cbb0ae1cb09f40a37d6d0bb5f2ca789071c6307827e4471

Download Submit
memory/3668-13-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3668-12-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3668-11-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3668-19-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3944-14-0x0000000000820000-0x0000000000835000-memory.dmp

Filesize
84KB

Download
memory/3944-16-0x0000000000820000-0x0000000000835000-memory.dmp

Filesize
84KB

Download
memory/3944-17-0x0000000000820000-0x0000000000835000-memory.dmp

Filesize
84KB

Download
memory/4912-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4912-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

Filesize
1024KB

Download
memory/4912-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4912-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4912-9-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4912-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads