tofsee | 6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b

General

Target

JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe
Size

292KB
MD5

67d7083f1734915ca4ef5a14820eed9e
SHA1

cf2436918acea33f6e66731e30dfcb4c21e6d423
SHA256

6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b
SHA512

34ec6dcf5fdd43ec0fd3302f61bd34067fb4f343cee245d708fc1739f845bdff4a238a4ba4a8510a23579c72192d6706a0a537bdc41c955b19129ccbe657d252
SSDEEP

6144:V2UaFUQRExHq9JEABei1SXuZet0ySbTHe7d1pMNA:IrExHcyABR1SXuZet0ySbTc1pMy

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
3592	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\tkrmvjnk\ImagePath = "C:\\Windows\\SysWOW64\\tkrmvjnk\\xztieawn.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_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe

Deletes itself 1 IoCs

pid	Process
1052	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1932	xztieawn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1932 set thread context of 1052	1932	xztieawn.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
2364	sc.exe
2860	sc.exe
4056	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
3156	4588	WerFault.exe	82
1528	1932	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	xztieawn.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	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	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 2252	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	84
PID 4588 wrote to memory of 2252	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	84
PID 4588 wrote to memory of 2252	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	84
PID 4588 wrote to memory of 4856	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	86
PID 4588 wrote to memory of 4856	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	86
PID 4588 wrote to memory of 4856	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	86
PID 4588 wrote to memory of 2364	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	88
PID 4588 wrote to memory of 2364	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	88
PID 4588 wrote to memory of 2364	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	88
PID 4588 wrote to memory of 2860	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	90
PID 4588 wrote to memory of 2860	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	90
PID 4588 wrote to memory of 2860	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	90
PID 4588 wrote to memory of 4056	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	92
PID 4588 wrote to memory of 4056	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	92
PID 4588 wrote to memory of 4056	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	92
PID 4588 wrote to memory of 3592	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	95
PID 4588 wrote to memory of 3592	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	95
PID 4588 wrote to memory of 3592	4588	JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe	95
PID 1932 wrote to memory of 1052	1932	xztieawn.exe	105
PID 1932 wrote to memory of 1052	1932	xztieawn.exe	105
PID 1932 wrote to memory of 1052	1932	xztieawn.exe	105
PID 1932 wrote to memory of 1052	1932	xztieawn.exe	105
PID 1932 wrote to memory of 1052	1932	xztieawn.exe	105

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4588
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tkrmvjnk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xztieawn.exe" C:\Windows\SysWOW64\tkrmvjnk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4856
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tkrmvjnk binPath= "C:\Windows\SysWOW64\tkrmvjnk\xztieawn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2364
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tkrmvjnk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2860
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tkrmvjnk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4056
- 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:3592
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4588 -s 1036
  2⤵
  - Program crash
  PID:3156

C:\Windows\SysWOW64\tkrmvjnk\xztieawn.exe
C:\Windows\SysWOW64\tkrmvjnk\xztieawn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6cf2fd59eac608a1f22414a2c20a21c5564c7b829375b5cab3944bb9374e8f0b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1052
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1932 -s 512
  2⤵
  - Program crash
  PID:1528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4588 -ip 4588
1⤵
PID:100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1932 -ip 1932
1⤵
PID:4024

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\xztieawn.exe

Filesize
13.2MB

MD5
5966b6112ef6640dc38032a099887bfc

SHA1
48f982f7dc891ab7499b4b5e372378b49a3cbaeb

SHA256
3a7d1401925b3dbd90c056aa71aa3ecad810d563c8282fc50305562b2054ce95

SHA512
2407dc0963d44e1bd96da527caaa6138d1799bbca0e6db3cd0ceb07eff920a5528f5578a3fbc178a5641e17b670a70c3e8b5b02f5abfd86fc0c91c4ed506ea23

Download Submit
memory/1052-11-0x0000000000AB0000-0x0000000000AC5000-memory.dmp

Filesize
84KB

Download
memory/1052-13-0x0000000000AB0000-0x0000000000AC5000-memory.dmp

Filesize
84KB

Download
memory/1052-14-0x0000000000AB0000-0x0000000000AC5000-memory.dmp

Filesize
84KB

Download
memory/1932-15-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download
memory/4588-1-0x0000000002C80000-0x0000000002D80000-memory.dmp

Filesize
1024KB

Download
memory/4588-2-0x00000000048B0000-0x00000000048C3000-memory.dmp

Filesize
76KB

Download
memory/4588-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4588-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4588-8-0x00000000048B0000-0x00000000048C3000-memory.dmp

Filesize
76KB

Download
memory/4588-7-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads