tofsee | 3f487cd4fe611496acdd0cb193385e2bb233d535e99b5f6caadcf172150f38a5

General

Target

JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe
Size

14.5MB
MD5

f32bc79d3ad21de604fa37038da7e745
SHA1

51ce5b09338e62e7bd869cd2939c50ec011f1782
SHA256

3f487cd4fe611496acdd0cb193385e2bb233d535e99b5f6caadcf172150f38a5
SHA512

692cb21d4f9078953449114c7a3743fa201fdb391c89577a59c72d3e2bbc4f77174723a8f36f395cb508df82fbd24b989e11caa9c496f4ad85c9fc4931b45cdc
SSDEEP

196608:sb/////////////////////////////////////////////////////////////H:s

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
4224	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\pzhnatsj\ImagePath = "C:\\Windows\\SysWOW64\\pzhnatsj\\vyrzxzhr.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe

Deletes itself 1 IoCs

pid	Process
4060	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4192	vyrzxzhr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4192 set thread context of 4060	4192	vyrzxzhr.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
1984	sc.exe
3748	sc.exe
3452	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
4932	1512	WerFault.exe	84
2056	4192	WerFault.exe	96

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	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe
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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vyrzxzhr.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1512 wrote to memory of 4904	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	85
PID 1512 wrote to memory of 4904	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	85
PID 1512 wrote to memory of 4904	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	85
PID 1512 wrote to memory of 1788	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	87
PID 1512 wrote to memory of 1788	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	87
PID 1512 wrote to memory of 1788	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	87
PID 1512 wrote to memory of 3748	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	89
PID 1512 wrote to memory of 3748	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	89
PID 1512 wrote to memory of 3748	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	89
PID 1512 wrote to memory of 3452	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	91
PID 1512 wrote to memory of 3452	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	91
PID 1512 wrote to memory of 3452	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	91
PID 1512 wrote to memory of 1984	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	94
PID 1512 wrote to memory of 1984	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	94
PID 1512 wrote to memory of 1984	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	94
PID 1512 wrote to memory of 4224	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	97
PID 1512 wrote to memory of 4224	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	97
PID 1512 wrote to memory of 4224	1512	JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe	97
PID 4192 wrote to memory of 4060	4192	vyrzxzhr.exe	103
PID 4192 wrote to memory of 4060	4192	vyrzxzhr.exe	103
PID 4192 wrote to memory of 4060	4192	vyrzxzhr.exe	103
PID 4192 wrote to memory of 4060	4192	vyrzxzhr.exe	103
PID 4192 wrote to memory of 4060	4192	vyrzxzhr.exe	103

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1512
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pzhnatsj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4904
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vyrzxzhr.exe" C:\Windows\SysWOW64\pzhnatsj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1788
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pzhnatsj binPath= "C:\Windows\SysWOW64\pzhnatsj\vyrzxzhr.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pzhnatsj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pzhnatsj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1984
- 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:4224
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 1204
  2⤵
  - Program crash
  PID:4932

C:\Windows\SysWOW64\pzhnatsj\vyrzxzhr.exe
C:\Windows\SysWOW64\pzhnatsj\vyrzxzhr.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f32bc79d3ad21de604fa37038da7e745.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4192
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4192 -s 516
  2⤵
  - Program crash
  PID:2056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1512 -ip 1512
1⤵
PID:2972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4192 -ip 4192
1⤵
PID:3668

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\vyrzxzhr.exe

Filesize
14.9MB

MD5
61f2f86062806073619056a4a652217c

SHA1
69c623ba496304cd92b097100ea8d43f25f99cb4

SHA256
285bb0706ae2285f6f143c4b0fb73e36b79597a40fe938ad0a1d1d0735bba752

SHA512
a6548c6021fb998494dcc2a71e978d26e5da9d1fb0056da7c2989e438f8f6e6662289ab85b97536bed00cb40a20c354da275e27d4d52bd04257b52ebfd7077f9

Download Submit
memory/1512-8-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/1512-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1512-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1512-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1512-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1512-1-0x0000000000900000-0x0000000000A00000-memory.dmp

Filesize
1024KB

Download
memory/4060-13-0x0000000000CC0000-0x0000000000CD5000-memory.dmp

Filesize
84KB

Download
memory/4060-15-0x0000000000CC0000-0x0000000000CD5000-memory.dmp

Filesize
84KB

Download
memory/4060-16-0x0000000000CC0000-0x0000000000CD5000-memory.dmp

Filesize
84KB

Download
memory/4192-12-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/4192-11-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/4192-18-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads