tofsee | 88c517b3794e1eba582c7f65f417929aac425dfcbd4b4856fe30fbb7d10dda69

General

Target

8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe
Size

13.1MB
MD5

8bf29e23ac410a61aa52ba419821c5d1
SHA1

cd8925a8e7be90c55a982bdb20dbbec7d6faae5d
SHA256

88c517b3794e1eba582c7f65f417929aac425dfcbd4b4856fe30fbb7d10dda69
SHA512

36a8039d962ec7375d8eb0f95fa20d38edb742e47aa9ee1232d25ed558ebc205dd211cc1ea277ee73330bc66460ea6babe2f8aba91e45aac0e2db5ff98e48ae9
SSDEEP

6144:crZQVnJzxj5nP76vk7wQ6udJm1lzvGCUWlnpj:QZ2zxj5nPmRQ6QgjzOCnl

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

Processes:

netsh.exe

pid	Process
2408	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\rkrmvotn\ImagePath = "C:\\Windows\\SysWOW64\\rkrmvotn\\bnzhhshp.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:

8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
4784	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

bnzhhshp.exe

pid	Process
2264	bnzhhshp.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

bnzhhshp.exe

description	pid	Process	procid_target
PID 2264 set thread context of 4784	2264	bnzhhshp.exe	104

Launches sc.exe 3 IoCs

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

Processes:

sc.exesc.exesc.exe

pid	Process
4192	sc.exe
3272	sc.exe
4292	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

Processes:

netsh.exe

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

Processes:

WerFault.exeWerFault.exe

pid	pid_target	Process	procid_target
1748	1736	WerFault.exe	84
1516	2264	WerFault.exe	98

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.exenetsh.exebnzhhshp.exe8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exesc.exesc.exesvchost.execmd.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bnzhhshp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exebnzhhshp.exe

description	pid	Process	procid_target
PID 1736 wrote to memory of 3960	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	88
PID 1736 wrote to memory of 3960	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	88
PID 1736 wrote to memory of 3960	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	88
PID 1736 wrote to memory of 1080	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	90
PID 1736 wrote to memory of 1080	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	90
PID 1736 wrote to memory of 1080	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	90
PID 1736 wrote to memory of 4192	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	92
PID 1736 wrote to memory of 4192	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	92
PID 1736 wrote to memory of 4192	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	92
PID 1736 wrote to memory of 3272	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	94
PID 1736 wrote to memory of 3272	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	94
PID 1736 wrote to memory of 3272	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	94
PID 1736 wrote to memory of 4292	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	96
PID 1736 wrote to memory of 4292	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	96
PID 1736 wrote to memory of 4292	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	96
PID 1736 wrote to memory of 2408	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	99
PID 1736 wrote to memory of 2408	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	99
PID 1736 wrote to memory of 2408	1736	8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe	99
PID 2264 wrote to memory of 4784	2264	bnzhhshp.exe	104
PID 2264 wrote to memory of 4784	2264	bnzhhshp.exe	104
PID 2264 wrote to memory of 4784	2264	bnzhhshp.exe	104
PID 2264 wrote to memory of 4784	2264	bnzhhshp.exe	104
PID 2264 wrote to memory of 4784	2264	bnzhhshp.exe	104

C:\Users\Admin\AppData\Local\Temp\8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rkrmvotn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bnzhhshp.exe" C:\Windows\SysWOW64\rkrmvotn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1080
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rkrmvotn binPath= "C:\Windows\SysWOW64\rkrmvotn\bnzhhshp.exe /d\"C:\Users\Admin\AppData\Local\Temp\8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4192
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rkrmvotn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3272
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rkrmvotn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4292
- 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:2408
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1736 -s 1152
  2⤵
  - Program crash
  PID:1748

C:\Windows\SysWOW64\rkrmvotn\bnzhhshp.exe
C:\Windows\SysWOW64\rkrmvotn\bnzhhshp.exe /d"C:\Users\Admin\AppData\Local\Temp\8bf29e23ac410a61aa52ba419821c5d1_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2264
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2264 -s 512
  2⤵
  - Program crash
  PID:1516

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1736 -ip 1736
1⤵
PID:1676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2264 -ip 2264
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\bnzhhshp.exe

Filesize
14.3MB

MD5
3e11ae89c992c8f73fa5f021b2ae2636

SHA1
424d9570f2c253b3592c8cd7058f5f32ac0d17a4

SHA256
d23438b0784e94f84a1e803b9e978e6bd2689f985b940e9773b10a309535abcc

SHA512
6c0c4046448fd1011ae4e52cbf6ac1f3d0743d7d355a0e8e46c3fd6782ec84a64058ae4d690594b92ec3e7748cba9fef3833f73b3fb2e73c9db0373e711b3b0c

Download Submit
memory/1736-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1736-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1736-2-0x0000000000670000-0x0000000000683000-memory.dmp

Filesize
76KB

Download
memory/1736-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1736-9-0x0000000000670000-0x0000000000683000-memory.dmp

Filesize
76KB

Download
memory/1736-1-0x00000000006E0000-0x00000000007E0000-memory.dmp

Filesize
1024KB

Download
memory/2264-11-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2264-13-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2264-12-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2264-19-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4784-14-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/4784-16-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/4784-17-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads