tofsee | 8791519374a3ea6c961cc5bb0342e34b25b4963ff4245ba224319cb93062bcd8

General

Target

b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe
Size

14.1MB
MD5

b0a59d0a8d15871ccb8be92c8d0f67f0
SHA1

752ce7ccfee2b5de80ac420ad3df76a6b5943c84
SHA256

8791519374a3ea6c961cc5bb0342e34b25b4963ff4245ba224319cb93062bcd8
SHA512

dd0d8e8894423e1660e5f1a7e523192ddbf9e88f7a456a5a1547327fef792b1b086fccadead2f4d33d98a509b19de9feb5f79b24d822c6da78d0a04a832f5282
SSDEEP

98304:9uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuue:

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

pid	Process
2268	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\xfqunko\ImagePath = "C:\\Windows\\SysWOW64\\xfqunko\\hoanwjke.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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4288	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1520	hoanwjke.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1520 set thread context of 4288	1520	hoanwjke.exe	111

Launches sc.exe 3 IoCs

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

pid	Process
1344	sc.exe
4332	sc.exe
376	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
8	548	WerFault.exe	83
2892	1520	WerFault.exe	103

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	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.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	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hoanwjke.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 548 wrote to memory of 764	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	92
PID 548 wrote to memory of 764	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	92
PID 548 wrote to memory of 764	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	92
PID 548 wrote to memory of 3056	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	94
PID 548 wrote to memory of 3056	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	94
PID 548 wrote to memory of 3056	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	94
PID 548 wrote to memory of 1344	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	96
PID 548 wrote to memory of 1344	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	96
PID 548 wrote to memory of 1344	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	96
PID 548 wrote to memory of 4332	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	99
PID 548 wrote to memory of 4332	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	99
PID 548 wrote to memory of 4332	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	99
PID 548 wrote to memory of 376	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	101
PID 548 wrote to memory of 376	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	101
PID 548 wrote to memory of 376	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	101
PID 548 wrote to memory of 2268	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	104
PID 548 wrote to memory of 2268	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	104
PID 548 wrote to memory of 2268	548	b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe	104
PID 1520 wrote to memory of 4288	1520	hoanwjke.exe	111
PID 1520 wrote to memory of 4288	1520	hoanwjke.exe	111
PID 1520 wrote to memory of 4288	1520	hoanwjke.exe	111
PID 1520 wrote to memory of 4288	1520	hoanwjke.exe	111
PID 1520 wrote to memory of 4288	1520	hoanwjke.exe	111

C:\Users\Admin\AppData\Local\Temp\b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:548
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xfqunko\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hoanwjke.exe" C:\Windows\SysWOW64\xfqunko\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xfqunko binPath= "C:\Windows\SysWOW64\xfqunko\hoanwjke.exe /d\"C:\Users\Admin\AppData\Local\Temp\b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1344
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xfqunko "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4332
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xfqunko
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:376
- 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:2268
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 548 -s 1040
  2⤵
  - Program crash
  PID:8

C:\Windows\SysWOW64\xfqunko\hoanwjke.exe
C:\Windows\SysWOW64\xfqunko\hoanwjke.exe /d"C:\Users\Admin\AppData\Local\Temp\b0a59d0a8d15871ccb8be92c8d0f67f0_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1520
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4288
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1520 -s 532
  2⤵
  - Program crash
  PID:2892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 548 -ip 548
1⤵
PID:1928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1520 -ip 1520
1⤵
PID:2260

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\hoanwjke.exe

Filesize
12.3MB

MD5
3285d287ea75a174d4a031d99d80dac1

SHA1
f791cdc070aae9a0ea75db7633c8e44e79c79a2c

SHA256
035070d25a3bb57fba67312b8bb80b7725a19a760f1b7dee79e070d0d7ff31fd

SHA512
0b42a1c8cc97df728cb1f4974965160d5c398607d028e0e6b606a0e0401d3a0ef98b918a8282d14f1e325c9b7395ceb32fab0dd76b2dde63a8fbc933265849be

Download Submit
memory/548-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/548-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/548-2-0x0000000000640000-0x0000000000653000-memory.dmp

Filesize
76KB

Download
memory/548-9-0x0000000000640000-0x0000000000653000-memory.dmp

Filesize
76KB

Download
memory/548-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/548-1-0x0000000000750000-0x0000000000850000-memory.dmp

Filesize
1024KB

Download
memory/1520-11-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1520-12-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1520-13-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1520-18-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4288-14-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/4288-16-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download
memory/4288-17-0x0000000000A30000-0x0000000000A45000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads