tofsee | 931edead1df66c59790bc1168f88ffd22b62cdfb302f4c72c849b9c757e0b5f8

General

Target

2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe
Size

14.8MB
MD5

2134b61a7f995d8a24611160d791ad5f
SHA1

e9bc86f67d55e7cbc27d74d668187467c908a7f3
SHA256

931edead1df66c59790bc1168f88ffd22b62cdfb302f4c72c849b9c757e0b5f8
SHA512

771e54da94b6435d0185a8c750025102047fc3323de4d493694f8d371485b060bc25e2848cd491fdde8c6a44cea628ec5fba93dd4459b3d4301f9bac9df69bcd
SSDEEP

196608:6HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHn:

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
4628	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\rdavncaj\ImagePath = "C:\\Windows\\SysWOW64\\rdavncaj\\ogpxuhtn.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1432	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
608	ogpxuhtn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 608 set thread context of 1432	608	ogpxuhtn.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
3052	sc.exe
1600	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
852	1904	WerFault.exe	82
1048	608	WerFault.exe	96

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	2134b61a7f995d8a24611160d791ad5f_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	ogpxuhtn.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	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 1904 wrote to memory of 3376	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	86
PID 1904 wrote to memory of 3376	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	86
PID 1904 wrote to memory of 3376	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	86
PID 1904 wrote to memory of 2176	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	88
PID 1904 wrote to memory of 2176	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	88
PID 1904 wrote to memory of 2176	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	88
PID 1904 wrote to memory of 3956	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	90
PID 1904 wrote to memory of 3956	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	90
PID 1904 wrote to memory of 3956	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	90
PID 1904 wrote to memory of 3052	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	92
PID 1904 wrote to memory of 3052	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	92
PID 1904 wrote to memory of 3052	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	92
PID 1904 wrote to memory of 1600	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	94
PID 1904 wrote to memory of 1600	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	94
PID 1904 wrote to memory of 1600	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	94
PID 1904 wrote to memory of 4628	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	97
PID 1904 wrote to memory of 4628	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	97
PID 1904 wrote to memory of 4628	1904	2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe	97
PID 608 wrote to memory of 1432	608	ogpxuhtn.exe	103
PID 608 wrote to memory of 1432	608	ogpxuhtn.exe	103
PID 608 wrote to memory of 1432	608	ogpxuhtn.exe	103
PID 608 wrote to memory of 1432	608	ogpxuhtn.exe	103
PID 608 wrote to memory of 1432	608	ogpxuhtn.exe	103

C:\Users\Admin\AppData\Local\Temp\2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1904
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rdavncaj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ogpxuhtn.exe" C:\Windows\SysWOW64\rdavncaj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2176
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rdavncaj binPath= "C:\Windows\SysWOW64\rdavncaj\ogpxuhtn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3956
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rdavncaj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rdavncaj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1600
- 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:4628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1904 -s 1224
  2⤵
  - Program crash
  PID:852

C:\Windows\SysWOW64\rdavncaj\ogpxuhtn.exe
C:\Windows\SysWOW64\rdavncaj\ogpxuhtn.exe /d"C:\Users\Admin\AppData\Local\Temp\2134b61a7f995d8a24611160d791ad5f_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:608
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1432
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 608 -s 528
  2⤵
  - Program crash
  PID:1048

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1904 -ip 1904
1⤵
PID:5012

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 608 -ip 608
1⤵
PID:3472

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\ogpxuhtn.exe

Filesize
11.7MB

MD5
a106b85de9328f42b9dcdedf8f341bfd

SHA1
48871377f880715d438b1228cce8d0f3750f93e4

SHA256
f3e019072dd7d68484deb667189b16b4a11bf5b6c28390db5da31922a7ee9417

SHA512
6fca2d23c303bd043347aae91a758da6ede12a099fc7e20d5a9af173358c39b5a025613cd9d6bb3ac0751fe7560d261478ae38b80c3fd386f74a3a88564c7d8e

Download Submit
memory/608-15-0x0000000000400000-0x0000000002C69000-memory.dmp

Filesize
40.4MB

Download
memory/1432-11-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/1432-13-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/1432-14-0x00000000009E0000-0x00000000009F5000-memory.dmp

Filesize
84KB

Download
memory/1904-2-0x0000000002D50000-0x0000000002D63000-memory.dmp

Filesize
76KB

Download
memory/1904-1-0x0000000002D70000-0x0000000002E70000-memory.dmp

Filesize
1024KB

Download
memory/1904-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1904-9-0x0000000002D50000-0x0000000002D63000-memory.dmp

Filesize
76KB

Download
memory/1904-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1904-8-0x0000000000400000-0x0000000002C69000-memory.dmp

Filesize
40.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads