tofsee | 2916efe4ba63200798dea1fe33a121c3e4c368bde3508df6bac75df00e6e164f

General

Target

JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe
Size

12.4MB
MD5

4c07ca13d4b55e7b3d847d37d0fbc387
SHA1

77c5851c82d2dbba05c72317cb4ed9917aa45654
SHA256

2916efe4ba63200798dea1fe33a121c3e4c368bde3508df6bac75df00e6e164f
SHA512

ef0f0c744b1629e6d0aed9ec94d24d68083b52ea3784d2243723254ad51c02ed77a4c016a31e6c641d28f16773dfca3e17a465d5e6789bd94beec321252ed212
SSDEEP

98304:fY3333333333333333333333333333333333333333333333333333333333333n:f

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
2256	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\bxuzeojv\ImagePath = "C:\\Windows\\SysWOW64\\bxuzeojv\\jvqnutth.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe

Deletes itself 1 IoCs

pid	Process
772	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2608	jvqnutth.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2608 set thread context of 772	2608	jvqnutth.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
4264	sc.exe
5060	sc.exe
3600	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
3812	1672	WerFault.exe	82
2224	2608	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	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jvqnutth.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1672 wrote to memory of 4528	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	83
PID 1672 wrote to memory of 4528	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	83
PID 1672 wrote to memory of 4528	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	83
PID 1672 wrote to memory of 2148	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	86
PID 1672 wrote to memory of 2148	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	86
PID 1672 wrote to memory of 2148	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	86
PID 1672 wrote to memory of 3600	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	88
PID 1672 wrote to memory of 3600	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	88
PID 1672 wrote to memory of 3600	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	88
PID 1672 wrote to memory of 4264	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	90
PID 1672 wrote to memory of 4264	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	90
PID 1672 wrote to memory of 4264	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	90
PID 1672 wrote to memory of 5060	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	92
PID 1672 wrote to memory of 5060	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	92
PID 1672 wrote to memory of 5060	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	92
PID 1672 wrote to memory of 2256	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	95
PID 1672 wrote to memory of 2256	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	95
PID 1672 wrote to memory of 2256	1672	JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe	95
PID 2608 wrote to memory of 772	2608	jvqnutth.exe	103
PID 2608 wrote to memory of 772	2608	jvqnutth.exe	103
PID 2608 wrote to memory of 772	2608	jvqnutth.exe	103
PID 2608 wrote to memory of 772	2608	jvqnutth.exe	103
PID 2608 wrote to memory of 772	2608	jvqnutth.exe	103

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bxuzeojv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4528
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jvqnutth.exe" C:\Windows\SysWOW64\bxuzeojv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2148
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bxuzeojv binPath= "C:\Windows\SysWOW64\bxuzeojv\jvqnutth.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bxuzeojv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4264
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bxuzeojv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5060
- 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:2256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1672 -s 1036
  2⤵
  - Program crash
  PID:3812

C:\Windows\SysWOW64\bxuzeojv\jvqnutth.exe
C:\Windows\SysWOW64\bxuzeojv\jvqnutth.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4c07ca13d4b55e7b3d847d37d0fbc387.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2608
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 512
  2⤵
  - Program crash
  PID:2224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1672 -ip 1672
1⤵
PID:2088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2608 -ip 2608
1⤵
PID:4076

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\jvqnutth.exe

Filesize
11.2MB

MD5
e1ebb5fd76a53739c10ccd31b3fefdc4

SHA1
2e8dc13175eb4e824599343ed783ff0d5d660686

SHA256
6056d6b0f0f3d600373b3621d9b4cf9fdaf544a2061da62d156ec64f4056641c

SHA512
2e843b0bf3076bc13e1c4df4ebf3db26675d9aa5422640a856f5251c9e135bea6373c0f5a4fe67753c8febfa68089977bb7daa8a29c61122d0ae5664a072472c

Download Submit
memory/772-14-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/772-17-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/772-16-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/1672-8-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1672-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1672-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1672-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1672-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1672-1-0x0000000000790000-0x0000000000890000-memory.dmp

Filesize
1024KB

Download
memory/2608-11-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2608-12-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2608-13-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/2608-19-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads