tofsee | ab7c17380f2715ab57dc012b1ce4a7e72364cf218623fe7a3075fd6fbffc3666

General

Target

f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe
Size

12.4MB
MD5

f6920b77443255c092bbf9df3f1d4451
SHA1

670f15293c4a9ad62a043f0506a9cf4cadc67090
SHA256

ab7c17380f2715ab57dc012b1ce4a7e72364cf218623fe7a3075fd6fbffc3666
SHA512

974b99cfde0eec0c71564db6fcd7d3ace305ac90bc1f1b9f9082afcbd848cd58e9f5c62e3246de0951bc2320742a7837fa21d11b9accde357609341f33387aaf
SSDEEP

393216:d888888888888888888888888888888888888888888888888888888888888883:

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
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
540	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\mhgiahfj\ImagePath = "C:\\Windows\\SysWOW64\\mhgiahfj\\nuxvwwma.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2104	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4696	nuxvwwma.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4696 set thread context of 2104	4696	nuxvwwma.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1488	sc.exe
2620	sc.exe
3956	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
3616	4836	WerFault.exe	81
3276	4696	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	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f6920b77443255c092bbf9df3f1d4451_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nuxvwwma.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4836 wrote to memory of 2036	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	82
PID 4836 wrote to memory of 2036	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	82
PID 4836 wrote to memory of 2036	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	82
PID 4836 wrote to memory of 3380	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	84
PID 4836 wrote to memory of 3380	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	84
PID 4836 wrote to memory of 3380	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	84
PID 4836 wrote to memory of 1488	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	86
PID 4836 wrote to memory of 1488	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	86
PID 4836 wrote to memory of 1488	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	86
PID 4836 wrote to memory of 2620	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	88
PID 4836 wrote to memory of 2620	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	88
PID 4836 wrote to memory of 2620	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	88
PID 4836 wrote to memory of 3956	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	90
PID 4836 wrote to memory of 3956	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	90
PID 4836 wrote to memory of 3956	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	90
PID 4836 wrote to memory of 540	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	93
PID 4836 wrote to memory of 540	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	93
PID 4836 wrote to memory of 540	4836	f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe	93
PID 4696 wrote to memory of 2104	4696	nuxvwwma.exe	98
PID 4696 wrote to memory of 2104	4696	nuxvwwma.exe	98
PID 4696 wrote to memory of 2104	4696	nuxvwwma.exe	98
PID 4696 wrote to memory of 2104	4696	nuxvwwma.exe	98
PID 4696 wrote to memory of 2104	4696	nuxvwwma.exe	98

C:\Users\Admin\AppData\Local\Temp\f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4836
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mhgiahfj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nuxvwwma.exe" C:\Windows\SysWOW64\mhgiahfj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3380
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mhgiahfj binPath= "C:\Windows\SysWOW64\mhgiahfj\nuxvwwma.exe /d\"C:\Users\Admin\AppData\Local\Temp\f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1488
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mhgiahfj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2620
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mhgiahfj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3956
- 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:540
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4836 -s 572
  2⤵
  - Program crash
  PID:3616

C:\Windows\SysWOW64\mhgiahfj\nuxvwwma.exe
C:\Windows\SysWOW64\mhgiahfj\nuxvwwma.exe /d"C:\Users\Admin\AppData\Local\Temp\f6920b77443255c092bbf9df3f1d4451_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4696
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2104
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4696 -s 532
  2⤵
  - Program crash
  PID:3276

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4836 -ip 4836
1⤵
PID:3936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 4696 -ip 4696
1⤵
PID:2756

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\nuxvwwma.exe

Filesize
12.1MB

MD5
921b96fd6f64131ef197640b0f7798e4

SHA1
fcdd1965afbba0a5cfe29065bd65c861de3ffd7b

SHA256
d552241a93e6aa4b64329ddc3150cd94b507c8fa76e0be8543d1716da8e18086

SHA512
3775eac0981450a670e12fc3df1e9fbfbca41e7b030914f5afb29367607384355c1bea51e345b10a3644f7e1a55c0a7f8baf53bcc39f89821180998c620baa8b

Download Submit
memory/2104-14-0x0000000001240000-0x0000000001255000-memory.dmp

Filesize
84KB

Download
memory/2104-17-0x0000000001240000-0x0000000001255000-memory.dmp

Filesize
84KB

Download
memory/2104-16-0x0000000001240000-0x0000000001255000-memory.dmp

Filesize
84KB

Download
memory/4696-12-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/4696-11-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/4696-13-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/4696-18-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/4836-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4836-8-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/4836-1-0x0000000000550000-0x0000000000650000-memory.dmp

Filesize
1024KB

Download
memory/4836-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4836-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4836-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads