tofsee | b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94

General

Target

JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe
Size

333KB
MD5

eb0678df119dfd9e714fba2fae3d5239
SHA1

98f2d165ad96ef58d52276529ca0b00e38ff7295
SHA256

b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94
SHA512

b273f385cac30c8bedc84e8f10ddcc7b1746ed079b64164592c1bacba29e1fbfd9228c8b04f62a55909ff3954e5d97ffd9fc90a20ee68b5720cf3ee11fc110d1
SSDEEP

6144:MomFiQiTBGC2R4Stn/ZV0duUphnrzkXCcLHmGpqwep:tmFsBvI4un/ZV0duuhrYXCc6mL6

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.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

pid	Process
1796	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\cmlazoaq\ImagePath = "C:\\Windows\\SysWOW64\\cmlazoaq\\vfkxezyn.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe

Deletes itself 1 IoCs

pid	Process
208	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1760	vfkxezyn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1760 set thread context of 208	1760	vfkxezyn.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4260	sc.exe
536	sc.exe
1280	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2616	2340	WerFault.exe	81
2380	1760	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	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	vfkxezyn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.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	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 2056	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	82
PID 2340 wrote to memory of 2056	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	82
PID 2340 wrote to memory of 2056	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	82
PID 2340 wrote to memory of 1220	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	84
PID 2340 wrote to memory of 1220	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	84
PID 2340 wrote to memory of 1220	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	84
PID 2340 wrote to memory of 4260	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	86
PID 2340 wrote to memory of 4260	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	86
PID 2340 wrote to memory of 4260	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	86
PID 2340 wrote to memory of 536	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	88
PID 2340 wrote to memory of 536	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	88
PID 2340 wrote to memory of 536	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	88
PID 2340 wrote to memory of 1280	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	90
PID 2340 wrote to memory of 1280	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	90
PID 2340 wrote to memory of 1280	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	90
PID 2340 wrote to memory of 1796	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	93
PID 2340 wrote to memory of 1796	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	93
PID 2340 wrote to memory of 1796	2340	JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe	93
PID 1760 wrote to memory of 208	1760	vfkxezyn.exe	98
PID 1760 wrote to memory of 208	1760	vfkxezyn.exe	98
PID 1760 wrote to memory of 208	1760	vfkxezyn.exe	98
PID 1760 wrote to memory of 208	1760	vfkxezyn.exe	98
PID 1760 wrote to memory of 208	1760	vfkxezyn.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2340
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cmlazoaq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vfkxezyn.exe" C:\Windows\SysWOW64\cmlazoaq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1220
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cmlazoaq binPath= "C:\Windows\SysWOW64\cmlazoaq\vfkxezyn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4260
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cmlazoaq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:536
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cmlazoaq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1280
- 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:1796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2340 -s 1288
  2⤵
  - Program crash
  PID:2616

C:\Windows\SysWOW64\cmlazoaq\vfkxezyn.exe
C:\Windows\SysWOW64\cmlazoaq\vfkxezyn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b1e47155b6dcd9b8c11598628832f66876805b9417af2b6e3cfb11b3890eaa94.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1760 -s 532
  2⤵
  - Program crash
  PID:2380

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2340 -ip 2340
1⤵
PID:2164

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1760 -ip 1760
1⤵
PID:2820

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\vfkxezyn.exe

Filesize
11.9MB

MD5
f4aa814149836f9eff03a0e416a82629

SHA1
55c72859669fb299603cd81de903a2d17eb3ddf1

SHA256
8e0f46c1b10aa4def2f934ee01a85c9a82c86fa1ec9e026bca61e26b5a606de7

SHA512
b19417f6e29191383e19b0deb84ae09be654f4b4806c3775120e09a18754b81c013313fde4bdcaae8dab59b5cdeaa2a7b34bb9339ffce402fdfe717a2b9c8029

Download Submit
memory/208-11-0x0000000000850000-0x0000000000865000-memory.dmp

Filesize
84KB

Download
memory/208-13-0x0000000000850000-0x0000000000865000-memory.dmp

Filesize
84KB

Download
memory/208-14-0x0000000000850000-0x0000000000865000-memory.dmp

Filesize
84KB

Download
memory/1760-15-0x0000000000400000-0x0000000002B4B000-memory.dmp

Filesize
39.3MB

Download
memory/2340-1-0x0000000002E30000-0x0000000002F30000-memory.dmp

Filesize
1024KB

Download
memory/2340-2-0x0000000002DF0000-0x0000000002E03000-memory.dmp

Filesize
76KB

Download
memory/2340-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2340-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2340-8-0x0000000002DF0000-0x0000000002E03000-memory.dmp

Filesize
76KB

Download
memory/2340-7-0x0000000000400000-0x0000000002B4B000-memory.dmp

Filesize
39.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads