tofsee | 488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919

General

Target

JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe
Size

337KB
MD5

2488336d76b57d7a3e72980a209d3a0a
SHA1

09c54507231eff98d169ee13a080727e4c31144c
SHA256

488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919
SHA512

93fccad60a145216754473ef9da8309b9c2450eba2ceb21af4bd25d4e8db2c729e5adcbb050b603d8921341f732094929ce78bd8519ec18f3aac7a98de40b917
SSDEEP

6144:39Gu9W43Ah8//SqtsaHlgYnOyLGFx6qv4:Do43AhEKqtsaHCDyLGF3v4

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
3364	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\jjeyyoeb\ImagePath = "C:\\Windows\\SysWOW64\\jjeyyoeb\\chrhva.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe

Deletes itself 1 IoCs

pid	Process
4608	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3152	chrhva.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3152 set thread context of 4608	3152	chrhva.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4648	sc.exe
3428	sc.exe
1540	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
3976	3148	WerFault.exe	82
60	3152	WerFault.exe	93

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	cmd.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chrhva.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3148 wrote to memory of 4940	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	83
PID 3148 wrote to memory of 4940	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	83
PID 3148 wrote to memory of 4940	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	83
PID 3148 wrote to memory of 2736	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	85
PID 3148 wrote to memory of 2736	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	85
PID 3148 wrote to memory of 2736	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	85
PID 3148 wrote to memory of 4648	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	87
PID 3148 wrote to memory of 4648	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	87
PID 3148 wrote to memory of 4648	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	87
PID 3148 wrote to memory of 3428	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	89
PID 3148 wrote to memory of 3428	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	89
PID 3148 wrote to memory of 3428	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	89
PID 3148 wrote to memory of 1540	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	91
PID 3148 wrote to memory of 1540	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	91
PID 3148 wrote to memory of 1540	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	91
PID 3148 wrote to memory of 3364	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	94
PID 3148 wrote to memory of 3364	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	94
PID 3148 wrote to memory of 3364	3148	JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe	94
PID 3152 wrote to memory of 4608	3152	chrhva.exe	100
PID 3152 wrote to memory of 4608	3152	chrhva.exe	100
PID 3152 wrote to memory of 4608	3152	chrhva.exe	100
PID 3152 wrote to memory of 4608	3152	chrhva.exe	100
PID 3152 wrote to memory of 4608	3152	chrhva.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3148
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jjeyyoeb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4940
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\chrhva.exe" C:\Windows\SysWOW64\jjeyyoeb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jjeyyoeb binPath= "C:\Windows\SysWOW64\jjeyyoeb\chrhva.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4648
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jjeyyoeb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3428
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jjeyyoeb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1540
- 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:3364
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3148 -s 1044
  2⤵
  - Program crash
  PID:3976

C:\Windows\SysWOW64\jjeyyoeb\chrhva.exe
C:\Windows\SysWOW64\jjeyyoeb\chrhva.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_488dd7508bcba135c824c79e64f40cb6a4dbc150097999290b570b04fc68e919.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3152
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3152 -s 516
  2⤵
  - Program crash
  PID:60

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3148 -ip 3148
1⤵
PID:1796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3152 -ip 3152
1⤵
PID:1852

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\chrhva.exe

Filesize
14.1MB

MD5
4a18454fc61a4c13addf33a3e758837c

SHA1
6761da08fa46e7d9fcbcb0ca39b0fd9aa20e19f6

SHA256
805a3dd366e13af89aeb805ee4242eb78d15a354cd0df54c46d518bd88de6785

SHA512
c3300c919e4915a0fc3fdaad8bcc3aba4c6f988f0c6a93fb2f06bcd02ac0dcfe2fae152dda66835e297f2e72ee2b4237beb27062a0119d4725ec52765b3aeef1

Download Submit
memory/3148-1-0x0000000002D40000-0x0000000002E40000-memory.dmp

Filesize
1024KB

Download
memory/3148-2-0x0000000002CB0000-0x0000000002CC3000-memory.dmp

Filesize
76KB

Download
memory/3148-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3148-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3148-8-0x0000000002CB0000-0x0000000002CC3000-memory.dmp

Filesize
76KB

Download
memory/3148-7-0x0000000000400000-0x0000000002B4C000-memory.dmp

Filesize
39.3MB

Download
memory/3152-15-0x0000000000400000-0x0000000002B4C000-memory.dmp

Filesize
39.3MB

Download
memory/4608-11-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download
memory/4608-13-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download
memory/4608-14-0x0000000000550000-0x0000000000565000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads