tofsee | f358207ddc655e1d34988ac7755fa7493bee2f8c852fa5379da38d61d50543e2

General

Target

JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe
Size

12.0MB
MD5

d07c4e5d572d8f14b73aa058139b559f
SHA1

11902bb50ec2f62c49a82ad36ff74ea5f1ab9d44
SHA256

f358207ddc655e1d34988ac7755fa7493bee2f8c852fa5379da38d61d50543e2
SHA512

fb6b788988ff4428e36dbc7b80c11eab54b7da62145f0bb6f08b2c975911778a9954cc53e366dea3b4b52829d2d65e42bc61e0af667e5e485379c623850c2825
SSDEEP

12288:8ZnHC6Hf1kkNWoRjta3JZlPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPf:8dHCRiG

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
4412	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\uzmbpvoj\ImagePath = "C:\\Windows\\SysWOW64\\uzmbpvoj\\dtttizfx.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe

Deletes itself 1 IoCs

pid	Process
1600	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3496	dtttizfx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3496 set thread context of 1600	3496	dtttizfx.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
216	sc.exe
1672	sc.exe
1748	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
4768	4008	WerFault.exe	81
4080	3496	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	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	dtttizfx.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	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4008 wrote to memory of 5056	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	82
PID 4008 wrote to memory of 5056	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	82
PID 4008 wrote to memory of 5056	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	82
PID 4008 wrote to memory of 3472	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	84
PID 4008 wrote to memory of 3472	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	84
PID 4008 wrote to memory of 3472	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	84
PID 4008 wrote to memory of 216	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	86
PID 4008 wrote to memory of 216	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	86
PID 4008 wrote to memory of 216	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	86
PID 4008 wrote to memory of 1672	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	88
PID 4008 wrote to memory of 1672	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	88
PID 4008 wrote to memory of 1672	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	88
PID 4008 wrote to memory of 1748	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	90
PID 4008 wrote to memory of 1748	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	90
PID 4008 wrote to memory of 1748	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	90
PID 4008 wrote to memory of 4412	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	93
PID 4008 wrote to memory of 4412	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	93
PID 4008 wrote to memory of 4412	4008	JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe	93
PID 3496 wrote to memory of 1600	3496	dtttizfx.exe	98
PID 3496 wrote to memory of 1600	3496	dtttizfx.exe	98
PID 3496 wrote to memory of 1600	3496	dtttizfx.exe	98
PID 3496 wrote to memory of 1600	3496	dtttizfx.exe	98
PID 3496 wrote to memory of 1600	3496	dtttizfx.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4008
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uzmbpvoj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dtttizfx.exe" C:\Windows\SysWOW64\uzmbpvoj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uzmbpvoj binPath= "C:\Windows\SysWOW64\uzmbpvoj\dtttizfx.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:216
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uzmbpvoj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uzmbpvoj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1748
- 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:4412
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4008 -s 1260
  2⤵
  - Program crash
  PID:4768

C:\Windows\SysWOW64\uzmbpvoj\dtttizfx.exe
C:\Windows\SysWOW64\uzmbpvoj\dtttizfx.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_d07c4e5d572d8f14b73aa058139b559f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3496
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1600
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3496 -s 508
  2⤵
  - Program crash
  PID:4080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4008 -ip 4008
1⤵
PID:4936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3496 -ip 3496
1⤵
PID:3092

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\dtttizfx.exe

Filesize
14.5MB

MD5
eb43339c6c558bc5d9dfff55d0df8aa2

SHA1
9149cb08ff02a7c6a14aa4d989293b10801830fa

SHA256
2ad0170bccb836f22571e3080f70de9613a898a1ccef196fb2e0346883f76727

SHA512
2859b9872dc73369a7831399d9b36720196998a8efb28923434b9c4a1c9c8498a4a9a980992d61f438edff1f0a7d21ee3603c1f3d488d362cc09fbf47ae249b6

Download Submit
memory/1600-16-0x0000000000880000-0x0000000000895000-memory.dmp

Filesize
84KB

Download
memory/1600-17-0x0000000000880000-0x0000000000895000-memory.dmp

Filesize
84KB

Download
memory/1600-14-0x0000000000880000-0x0000000000895000-memory.dmp

Filesize
84KB

Download
memory/3496-13-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3496-11-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3496-12-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3496-19-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4008-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4008-8-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4008-1-0x00000000006E0000-0x00000000007E0000-memory.dmp

Filesize
1024KB

Download
memory/4008-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4008-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4008-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads