tofsee | ee1eb769f85ba3319c87eccf1dda1ae11bf5e63edd9a96be26b3356753d055e1

General

Target

0193889a235929497ee1d5971dae0697_JaffaCakes118.exe
Size

12.0MB
MD5

0193889a235929497ee1d5971dae0697
SHA1

cd26bd7c8a64af37899b120113bbc40aa11a7ad4
SHA256

ee1eb769f85ba3319c87eccf1dda1ae11bf5e63edd9a96be26b3356753d055e1
SHA512

8efc9de2f6dad7d29a027c75b964184b8c6a64b83ca18082a93afa2c708db199142d11047088e1dcaaf5d042395fd00ee52f43e23972e3ae9a8c8ff17248984a
SSDEEP

196608:yX6666666666666666666666666666666666666666666666666666666666666+:y

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
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

Processes:

netsh.exe

pid process

1008 netsh.exe

pid	process
1008	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\guvbhmgt\ImagePath = "C:\\Windows\\SysWOW64\\guvbhmgt\\sidpjvzr.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

Processes:

0193889a235929497ee1d5971dae0697_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2704 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

sidpjvzr.exe

pid process

2796 sidpjvzr.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

sidpjvzr.exe

description pid process target process

PID 2796 set thread context of 2704 2796 sidpjvzr.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2292 sc.exe
868 sc.exe
4752 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2704	svchost.exe

pid	process
2796	sidpjvzr.exe

description	pid	process	target process
PID 2796 set thread context of 2704	2796	sidpjvzr.exe	svchost.exe

pid	process
2292	sc.exe
868	sc.exe
4752	sc.exe

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

Processes:

netsh.exe

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

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

5092 3172 WerFault.exe 0193889a235929497ee1d5971dae0697_JaffaCakes118.exe
1712 2796 WerFault.exe sidpjvzr.exe

pid	pid_target	process	target process
5092	3172	WerFault.exe	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe
1712	2796	WerFault.exe	sidpjvzr.exe

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

Processes:

sc.exesc.exenetsh.exe0193889a235929497ee1d5971dae0697_JaffaCakes118.execmd.exesc.exesidpjvzr.exesvchost.execmd.exe

description	ioc	process
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	0193889a235929497ee1d5971dae0697_JaffaCakes118.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	sidpjvzr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

0193889a235929497ee1d5971dae0697_JaffaCakes118.exesidpjvzr.exe

description	pid	process	target process
PID 3172 wrote to memory of 2392	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	cmd.exe
PID 3172 wrote to memory of 2392	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	cmd.exe
PID 3172 wrote to memory of 2392	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	cmd.exe
PID 3172 wrote to memory of 1664	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	cmd.exe
PID 3172 wrote to memory of 1664	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	cmd.exe
PID 3172 wrote to memory of 1664	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	cmd.exe
PID 3172 wrote to memory of 868	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	sc.exe
PID 3172 wrote to memory of 868	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	sc.exe
PID 3172 wrote to memory of 868	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	sc.exe
PID 3172 wrote to memory of 4752	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	sc.exe
PID 3172 wrote to memory of 4752	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	sc.exe
PID 3172 wrote to memory of 4752	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	sc.exe
PID 3172 wrote to memory of 2292	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	sc.exe
PID 3172 wrote to memory of 2292	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	sc.exe
PID 3172 wrote to memory of 2292	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	sc.exe
PID 3172 wrote to memory of 1008	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	netsh.exe
PID 3172 wrote to memory of 1008	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	netsh.exe
PID 3172 wrote to memory of 1008	3172	0193889a235929497ee1d5971dae0697_JaffaCakes118.exe	netsh.exe
PID 2796 wrote to memory of 2704	2796	sidpjvzr.exe	svchost.exe
PID 2796 wrote to memory of 2704	2796	sidpjvzr.exe	svchost.exe
PID 2796 wrote to memory of 2704	2796	sidpjvzr.exe	svchost.exe
PID 2796 wrote to memory of 2704	2796	sidpjvzr.exe	svchost.exe
PID 2796 wrote to memory of 2704	2796	sidpjvzr.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\0193889a235929497ee1d5971dae0697_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0193889a235929497ee1d5971dae0697_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3172
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\guvbhmgt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sidpjvzr.exe" C:\Windows\SysWOW64\guvbhmgt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1664
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create guvbhmgt binPath= "C:\Windows\SysWOW64\guvbhmgt\sidpjvzr.exe /d\"C:\Users\Admin\AppData\Local\Temp\0193889a235929497ee1d5971dae0697_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:868
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description guvbhmgt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start guvbhmgt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2292
- 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:1008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3172 -s 1232
  2⤵
  - Program crash
  PID:5092

C:\Windows\SysWOW64\guvbhmgt\sidpjvzr.exe
C:\Windows\SysWOW64\guvbhmgt\sidpjvzr.exe /d"C:\Users\Admin\AppData\Local\Temp\0193889a235929497ee1d5971dae0697_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2796
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2704
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2796 -s 512
  2⤵
  - Program crash
  PID:1712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3172 -ip 3172
1⤵
PID:2248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 2796 -ip 2796
1⤵
PID:2496

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\sidpjvzr.exe

Filesize
12.0MB

MD5
34d82ed2fb60c00eb4e6b0a6fb18323d

SHA1
37d3f6b8e1039ac7d31019fde620f8e5878a5639

SHA256
f2af0ee0743f3ee1f388da8d5a38742e7118c6e85232536bc21d053b78fdfbf2

SHA512
5c53c0fd2fa02c2aebda49b193361a0c94a7f0fed7602cd58d12dcc896b10a3daa9218cf2c76c893a9e5bfbb7207033007b8fd1c1bed061a839088ae6ab0e99e

Download Submit
memory/2704-11-0x0000000000600000-0x0000000000615000-memory.dmp

Filesize
84KB

Download
memory/2704-14-0x0000000000600000-0x0000000000615000-memory.dmp

Filesize
84KB

Download
memory/2704-16-0x0000000000600000-0x0000000000615000-memory.dmp

Filesize
84KB

Download
memory/2796-15-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/2796-13-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/3172-1-0x0000000000A80000-0x0000000000B80000-memory.dmp

Filesize
1024KB

Download
memory/3172-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3172-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3172-8-0x0000000000400000-0x000000000086F000-memory.dmp

Filesize
4.4MB

Download
memory/3172-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3172-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads