tofsee | cd39da40f58c16195e18922921d7eef5b3002b7e1598b55af5ac48663c433529

General

Target

98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe
Size

238KB
MD5

98b62dd2b4b9fca257de75573823e2f5
SHA1

ad30ee3dae22e935f8654bf82a58e445e82e8181
SHA256

cd39da40f58c16195e18922921d7eef5b3002b7e1598b55af5ac48663c433529
SHA512

05399acfa54357ce2e5e805e06648a0ba3a810635606597d070e5f9056410d8569d492781fb6039366aa96b12b5b14a9025dafda2cdd0d094cebae5abbd378da
SSDEEP

6144:NNytwy0vP4gE/r4JSzyEc9T3M+0snM6rSuB:NI+XvP4Z4JSzyEg7r0snNB

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
684	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\sqosfdgg\ImagePath = "C:\\Windows\\SysWOW64\\sqosfdgg\\afbtrug.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3640	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2136	afbtrug.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2136 set thread context of 3640	2136	afbtrug.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
4948	sc.exe
3964	sc.exe
2644	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

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	afbtrug.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	98b62dd2b4b9fca257de75573823e2f5_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	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 4508 wrote to memory of 2052	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	82
PID 4508 wrote to memory of 2052	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	82
PID 4508 wrote to memory of 2052	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	82
PID 4508 wrote to memory of 3560	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	84
PID 4508 wrote to memory of 3560	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	84
PID 4508 wrote to memory of 3560	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	84
PID 4508 wrote to memory of 4948	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	86
PID 4508 wrote to memory of 4948	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	86
PID 4508 wrote to memory of 4948	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	86
PID 4508 wrote to memory of 3964	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	88
PID 4508 wrote to memory of 3964	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	88
PID 4508 wrote to memory of 3964	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	88
PID 4508 wrote to memory of 2644	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	90
PID 4508 wrote to memory of 2644	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	90
PID 4508 wrote to memory of 2644	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	90
PID 4508 wrote to memory of 684	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	93
PID 4508 wrote to memory of 684	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	93
PID 4508 wrote to memory of 684	4508	98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe	93
PID 2136 wrote to memory of 3640	2136	afbtrug.exe	95
PID 2136 wrote to memory of 3640	2136	afbtrug.exe	95
PID 2136 wrote to memory of 3640	2136	afbtrug.exe	95
PID 2136 wrote to memory of 3640	2136	afbtrug.exe	95
PID 2136 wrote to memory of 3640	2136	afbtrug.exe	95

C:\Users\Admin\AppData\Local\Temp\98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4508
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sqosfdgg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2052
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\afbtrug.exe" C:\Windows\SysWOW64\sqosfdgg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3560
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sqosfdgg binPath= "C:\Windows\SysWOW64\sqosfdgg\afbtrug.exe /d\"C:\Users\Admin\AppData\Local\Temp\98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sqosfdgg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sqosfdgg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2644
- 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:684

C:\Windows\SysWOW64\sqosfdgg\afbtrug.exe
C:\Windows\SysWOW64\sqosfdgg\afbtrug.exe /d"C:\Users\Admin\AppData\Local\Temp\98b62dd2b4b9fca257de75573823e2f5_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3640

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\afbtrug.exe

Filesize
14.7MB

MD5
1be578abe39955d9dccf64d0353a7fa2

SHA1
ff8519a336c72882b4b9ae38827b211ac41279f4

SHA256
9a9477128af2736ce3a4389ccb78e6b07a857cadd533f5435e8ff2deed184c9b

SHA512
906e8b685f1d84c9e68c0b7fbcfbebbc7124dd832e13ed89e0dcc42cf6f3381f9d84fc4f3ab4a295cdc2408d89901368b0a6d0980850096731e47dc365b50f4c

Download Submit
memory/2136-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2136-18-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2136-13-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2136-12-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3640-14-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/3640-16-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/3640-19-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/4508-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4508-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4508-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4508-1-0x0000000000AF0000-0x0000000000BF0000-memory.dmp

Filesize
1024KB

Download
memory/4508-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4508-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads