tofsee | 93f3712dbebaafe28d0c52837e64ebdff4faf292f1a6b75abb885cb6e719753f

General

Target

8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe
Size

11.6MB
MD5

8bef47b423bc1318ad88f0d239717e26
SHA1

f6015b826634751b01f561540a034b7e8bccc46d
SHA256

93f3712dbebaafe28d0c52837e64ebdff4faf292f1a6b75abb885cb6e719753f
SHA512

5c885dd3f1228ec73330d516f35dbb352caddf0c0ebe57fc9d21324293f1fc933358940fe38e83fab480a62713c6d11d98f3bb92a82ceb65599e6260b8e919f6
SSDEEP

49152:ipWkhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhN:ipW

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.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

Processes:

netsh.exe

pid process

1064 netsh.exe

pid	process
1064	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\mhpzyznd\ImagePath = "C:\\Windows\\SysWOW64\\mhpzyznd\\hcgyozbz.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:

8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

64 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

hcgyozbz.exe

pid process

1008 hcgyozbz.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

hcgyozbz.exe

description pid process target process

PID 1008 set thread context of 64 1008 hcgyozbz.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

4264 sc.exe
1948 sc.exe
3120 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
64	svchost.exe

pid	process
1008	hcgyozbz.exe

description	pid	process	target process
PID 1008 set thread context of 64	1008	hcgyozbz.exe	svchost.exe

pid	process
4264	sc.exe
1948	sc.exe
3120	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

2164 4772 WerFault.exe 8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe
2116 1008 WerFault.exe hcgyozbz.exe

pid	pid_target	process	target process
2164	4772	WerFault.exe	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe
2116	1008	WerFault.exe	hcgyozbz.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:

netsh.exesvchost.execmd.exesc.exesc.exehcgyozbz.exe8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.execmd.exesc.exe

description	ioc	process
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	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	hcgyozbz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exehcgyozbz.exe

description	pid	process	target process
PID 4772 wrote to memory of 3936	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	cmd.exe
PID 4772 wrote to memory of 3936	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	cmd.exe
PID 4772 wrote to memory of 3936	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	cmd.exe
PID 4772 wrote to memory of 3564	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	cmd.exe
PID 4772 wrote to memory of 3564	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	cmd.exe
PID 4772 wrote to memory of 3564	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	cmd.exe
PID 4772 wrote to memory of 1948	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	sc.exe
PID 4772 wrote to memory of 1948	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	sc.exe
PID 4772 wrote to memory of 1948	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	sc.exe
PID 4772 wrote to memory of 3120	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	sc.exe
PID 4772 wrote to memory of 3120	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	sc.exe
PID 4772 wrote to memory of 3120	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	sc.exe
PID 4772 wrote to memory of 4264	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	sc.exe
PID 4772 wrote to memory of 4264	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	sc.exe
PID 4772 wrote to memory of 4264	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	sc.exe
PID 4772 wrote to memory of 1064	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	netsh.exe
PID 4772 wrote to memory of 1064	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	netsh.exe
PID 4772 wrote to memory of 1064	4772	8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe	netsh.exe
PID 1008 wrote to memory of 64	1008	hcgyozbz.exe	svchost.exe
PID 1008 wrote to memory of 64	1008	hcgyozbz.exe	svchost.exe
PID 1008 wrote to memory of 64	1008	hcgyozbz.exe	svchost.exe
PID 1008 wrote to memory of 64	1008	hcgyozbz.exe	svchost.exe
PID 1008 wrote to memory of 64	1008	hcgyozbz.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mhpzyznd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3936
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hcgyozbz.exe" C:\Windows\SysWOW64\mhpzyznd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3564
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mhpzyznd binPath= "C:\Windows\SysWOW64\mhpzyznd\hcgyozbz.exe /d\"C:\Users\Admin\AppData\Local\Temp\8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mhpzyznd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3120
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mhpzyznd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4264
- 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:1064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 1232
  2⤵
  - Program crash
  PID:2164

C:\Windows\SysWOW64\mhpzyznd\hcgyozbz.exe
C:\Windows\SysWOW64\mhpzyznd\hcgyozbz.exe /d"C:\Users\Admin\AppData\Local\Temp\8bef47b423bc1318ad88f0d239717e26_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1008
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:64
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1008 -s 596
  2⤵
  - Program crash
  PID:2116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4772 -ip 4772
1⤵
PID:3024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 1008 -ip 1008
1⤵
PID:2388

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\hcgyozbz.exe

Filesize
11.7MB

MD5
0e997292ca51dbc5b28289923ca4e15a

SHA1
804c8b48ccee55a073226b7a75057ce2382b40de

SHA256
3e6780633fa97a173d5fdfad39c7901bd31b169829dd4335507f84a0e49a9fda

SHA512
061095ffbbde42a3dc77be4d91d7df81f76af27bc60de43d08a2cd049023ba2f3e2938c54bb0ae90adac0291463a3826ea9886d84fd94530155f65f278b06788

Download Submit
memory/64-16-0x00000000012A0000-0x00000000012B5000-memory.dmp

Filesize
84KB

Download
memory/64-22-0x00000000012A0000-0x00000000012B5000-memory.dmp

Filesize
84KB

Download
memory/64-24-0x00000000012A0000-0x00000000012B5000-memory.dmp

Filesize
84KB

Download
memory/64-23-0x00000000012A0000-0x00000000012B5000-memory.dmp

Filesize
84KB

Download
memory/64-12-0x00000000012A0000-0x00000000012B5000-memory.dmp

Filesize
84KB

Download
memory/1008-8-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1008-11-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1008-21-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/1008-10-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/4772-17-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/4772-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4772-3-0x0000000000710000-0x0000000000723000-memory.dmp

Filesize
76KB

Download
memory/4772-0-0x0000000000400000-0x000000000046C000-memory.dmp

Filesize
432KB

Download
memory/4772-20-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4772-19-0x0000000000710000-0x0000000000723000-memory.dmp

Filesize
76KB

Download
memory/4772-2-0x0000000000770000-0x0000000000870000-memory.dmp

Filesize
1024KB

Download
memory/4772-15-0x0000000000770000-0x0000000000870000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads