tofsee | 15a6a7d1b4839bcaa784303b0c9e05bce24f556efa0d36b05ef3eeeb87ba7805

General

Target

f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe
Size

10.0MB
MD5

f8da8c7403f48e779b019347774fe670
SHA1

34e5fb58342872225e0efa70ba9b1f0b8cd9655e
SHA256

15a6a7d1b4839bcaa784303b0c9e05bce24f556efa0d36b05ef3eeeb87ba7805
SHA512

eef7a2f01fd2c3a51c0de323e34e6f2ed5c509b713d7ed811baeb98d6990e9dbc1d6cfa99cf643cd229a19febcc1624ec3ad4525ff4d6657d4799d4327872a3c
SSDEEP

6144:UrZQVnJzxj5nP76vk7wQ6udJm1lzvGCUWlnpj:IZ2zxj5nPmRQ6QgjzOCnl

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

4944 netsh.exe

pid	process
4944	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\uitswdtp\ImagePath = "C:\\Windows\\SysWOW64\\uitswdtp\\oamuufuc.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:

f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1168 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

oamuufuc.exe

pid process

2904 oamuufuc.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

oamuufuc.exe

description pid process target process

PID 2904 set thread context of 1168 2904 oamuufuc.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

652 sc.exe
3284 sc.exe
3312 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1168	svchost.exe

pid	process
2904	oamuufuc.exe

description	pid	process	target process
PID 2904 set thread context of 1168	2904	oamuufuc.exe	svchost.exe

pid	process
652	sc.exe
3284	sc.exe
3312	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 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

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

4108 4148 WerFault.exe f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe
2260 2904 WerFault.exe oamuufuc.exe

pid	pid_target	process	target process
4108	4148	WerFault.exe	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe
2260	2904	WerFault.exe	oamuufuc.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.exeoamuufuc.exesvchost.exef8da8c7403f48e779b019347774fe670_JaffaCakes118.execmd.exesc.exesc.exenetsh.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	oamuufuc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f8da8c7403f48e779b019347774fe670_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f8da8c7403f48e779b019347774fe670_JaffaCakes118.exeoamuufuc.exe

description	pid	process	target process
PID 4148 wrote to memory of 752	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	cmd.exe
PID 4148 wrote to memory of 752	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	cmd.exe
PID 4148 wrote to memory of 752	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	cmd.exe
PID 4148 wrote to memory of 3904	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	cmd.exe
PID 4148 wrote to memory of 3904	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	cmd.exe
PID 4148 wrote to memory of 3904	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	cmd.exe
PID 4148 wrote to memory of 652	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	sc.exe
PID 4148 wrote to memory of 652	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	sc.exe
PID 4148 wrote to memory of 652	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	sc.exe
PID 4148 wrote to memory of 3284	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	sc.exe
PID 4148 wrote to memory of 3284	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	sc.exe
PID 4148 wrote to memory of 3284	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	sc.exe
PID 4148 wrote to memory of 3312	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	sc.exe
PID 4148 wrote to memory of 3312	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	sc.exe
PID 4148 wrote to memory of 3312	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	sc.exe
PID 4148 wrote to memory of 4944	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	netsh.exe
PID 4148 wrote to memory of 4944	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	netsh.exe
PID 4148 wrote to memory of 4944	4148	f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe	netsh.exe
PID 2904 wrote to memory of 1168	2904	oamuufuc.exe	svchost.exe
PID 2904 wrote to memory of 1168	2904	oamuufuc.exe	svchost.exe
PID 2904 wrote to memory of 1168	2904	oamuufuc.exe	svchost.exe
PID 2904 wrote to memory of 1168	2904	oamuufuc.exe	svchost.exe
PID 2904 wrote to memory of 1168	2904	oamuufuc.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4148
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uitswdtp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:752
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oamuufuc.exe" C:\Windows\SysWOW64\uitswdtp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3904
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uitswdtp binPath= "C:\Windows\SysWOW64\uitswdtp\oamuufuc.exe /d\"C:\Users\Admin\AppData\Local\Temp\f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:652
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uitswdtp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3284
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uitswdtp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3312
- 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:4944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4148 -s 1028
  2⤵
  - Program crash
  PID:4108

C:\Windows\SysWOW64\uitswdtp\oamuufuc.exe
C:\Windows\SysWOW64\uitswdtp\oamuufuc.exe /d"C:\Users\Admin\AppData\Local\Temp\f8da8c7403f48e779b019347774fe670_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2904
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1168
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2904 -s 512
  2⤵
  - Program crash
  PID:2260

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4148 -ip 4148
1⤵
PID:1748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2904 -ip 2904
1⤵
PID:3476

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\oamuufuc.exe

Filesize
13.9MB

MD5
51319e0be10138dc98b7a696cc766d5b

SHA1
9d36887e945b83eb3c98f65411a9cfb1252efa2e

SHA256
44530cb03f5ca5f0ab390aa007b5ea145f00dbe3669f6cee90efd145f57303e9

SHA512
909340bbaac3d29623956617f5249a5d25b9f41b19731088cbf2bdc10cf330db72083ab35a35e290d3f5c662ee4b8ed661638aabe3132a0d8289ba533c023178

Download Submit
memory/1168-13-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/1168-15-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/1168-16-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/2904-11-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2904-12-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2904-17-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4148-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4148-2-0x00000000005A0000-0x00000000005B3000-memory.dmp

Filesize
76KB

Download
memory/4148-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4148-9-0x00000000005A0000-0x00000000005B3000-memory.dmp

Filesize
76KB

Download
memory/4148-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4148-1-0x00000000006A0000-0x00000000007A0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads