tofsee | 3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448

General

Target

JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe
Size

246KB
MD5

ece784cccb962922fc1854433038c4cf
SHA1

3484e8fa539bac64f269584cc0f368cc7af89ee2
SHA256

3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448
SHA512

a594719d1ff40e4186f32a5a3d5955fe565bda2fbac6970bbcf4221939bf76ee064a4f36acf2fb1ff848028f2498b57f07cc0b691a797d7789eccf6e47a7e682
SSDEEP

6144:m2xmEmR0kLmK7vk1puzbgwu6QigabwVf:m0mEmR0ZKz8unn5

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
3288	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\cfudxtht\ImagePath = "C:\\Windows\\SysWOW64\\cfudxtht\\urchfpmj.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_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe

Deletes itself 1 IoCs

pid	Process
2168	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
628	urchfpmj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 628 set thread context of 2168	628	urchfpmj.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1372	sc.exe
624	sc.exe
5016	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
4248	2144	WerFault.exe	84
2444	628	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	urchfpmj.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2144 wrote to memory of 2616	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	85
PID 2144 wrote to memory of 2616	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	85
PID 2144 wrote to memory of 2616	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	85
PID 2144 wrote to memory of 1896	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	87
PID 2144 wrote to memory of 1896	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	87
PID 2144 wrote to memory of 1896	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	87
PID 2144 wrote to memory of 5016	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	89
PID 2144 wrote to memory of 5016	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	89
PID 2144 wrote to memory of 5016	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	89
PID 2144 wrote to memory of 1372	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	91
PID 2144 wrote to memory of 1372	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	91
PID 2144 wrote to memory of 1372	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	91
PID 2144 wrote to memory of 624	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	94
PID 2144 wrote to memory of 624	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	94
PID 2144 wrote to memory of 624	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	94
PID 2144 wrote to memory of 3288	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	97
PID 2144 wrote to memory of 3288	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	97
PID 2144 wrote to memory of 3288	2144	JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe	97
PID 628 wrote to memory of 2168	628	urchfpmj.exe	102
PID 628 wrote to memory of 2168	628	urchfpmj.exe	102
PID 628 wrote to memory of 2168	628	urchfpmj.exe	102
PID 628 wrote to memory of 2168	628	urchfpmj.exe	102
PID 628 wrote to memory of 2168	628	urchfpmj.exe	102

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2144
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cfudxtht\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\urchfpmj.exe" C:\Windows\SysWOW64\cfudxtht\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1896
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cfudxtht binPath= "C:\Windows\SysWOW64\cfudxtht\urchfpmj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cfudxtht "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1372
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cfudxtht
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:624
- 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:3288
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2144 -s 1036
  2⤵
  - Program crash
  PID:4248

C:\Windows\SysWOW64\cfudxtht\urchfpmj.exe
C:\Windows\SysWOW64\cfudxtht\urchfpmj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3cea5df8eaee36dc9a9b0fc5eaf6b36bc98c4fa4df58f0e4b4f12417e57fa448.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:628
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2168
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 628 -s 512
  2⤵
  - Program crash
  PID:2444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2144 -ip 2144
1⤵
PID:2800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 628 -ip 628
1⤵
PID:4616

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\urchfpmj.exe

Filesize
13.4MB

MD5
6ae64fbedb1b41e5c94efac7dd355163

SHA1
1c7f61f43867e39db4feaacf73e22562cf3fb3fd

SHA256
3ad9abce773bf7fcfd45cfd021d755e05764012e2514b06b6d76b296cf7a5bf1

SHA512
ab1eeec9715e9d172aa034a5253d15b7b999e67d2ce98b6bcbaf4649869a8fe1e6882903d7b5ee81865a1612c5f455a69b9f53998223ede896020568d5ccc410

Download Submit
memory/628-7-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/628-8-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/628-18-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/628-6-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/2144-14-0x0000000000570000-0x000000000057D000-memory.dmp

Filesize
52KB

Download
memory/2144-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2144-15-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/2144-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2144-0-0x0000000000570000-0x000000000057D000-memory.dmp

Filesize
52KB

Download
memory/2144-13-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/2144-1-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/2168-9-0x0000000000E60000-0x0000000000E75000-memory.dmp

Filesize
84KB

Download
memory/2168-12-0x0000000000E60000-0x0000000000E75000-memory.dmp

Filesize
84KB

Download
memory/2168-19-0x0000000000E60000-0x0000000000E75000-memory.dmp

Filesize
84KB

Download
memory/2168-20-0x0000000000E60000-0x0000000000E75000-memory.dmp

Filesize
84KB

Download
memory/2168-21-0x0000000000E60000-0x0000000000E75000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads