tofsee | ee9b872015d916a29d3cb56629f02477d60ad22e62013ded3914fd72ea97f966

General

Target

de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe
Size

11.4MB
MD5

de8324c81f580d5f1f3f313224f9cee2
SHA1

e0eeaa9e3000f88f3c37c15949bc90cd45a80fab
SHA256

ee9b872015d916a29d3cb56629f02477d60ad22e62013ded3914fd72ea97f966
SHA512

d5ebd3502d271830240fceac7aacf5b2235383584c86917f825191cc351c81b4517df589d98bcc066cbeb8ecdc2108bf57974d0324f107d04e0e19493de1523c
SSDEEP

24576:Wm1111111111111111111111111111111111111111111111111111111111111V:

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
4964	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\mfkrfovj\ImagePath = "C:\\Windows\\SysWOW64\\mfkrfovj\\sbrfgujp.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	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2908	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
116	sbrfgujp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 116 set thread context of 2908	116	sbrfgujp.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4324	sc.exe
4420	sc.exe
4092	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
3908	3440	WerFault.exe	82
1080	116	WerFault.exe	94

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	svchost.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sbrfgujp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3440 wrote to memory of 4880	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	83
PID 3440 wrote to memory of 4880	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	83
PID 3440 wrote to memory of 4880	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	83
PID 3440 wrote to memory of 1040	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	85
PID 3440 wrote to memory of 1040	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	85
PID 3440 wrote to memory of 1040	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	85
PID 3440 wrote to memory of 4324	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	88
PID 3440 wrote to memory of 4324	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	88
PID 3440 wrote to memory of 4324	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	88
PID 3440 wrote to memory of 4420	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	90
PID 3440 wrote to memory of 4420	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	90
PID 3440 wrote to memory of 4420	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	90
PID 3440 wrote to memory of 4092	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	92
PID 3440 wrote to memory of 4092	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	92
PID 3440 wrote to memory of 4092	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	92
PID 3440 wrote to memory of 4964	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	95
PID 3440 wrote to memory of 4964	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	95
PID 3440 wrote to memory of 4964	3440	de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe	95
PID 116 wrote to memory of 2908	116	sbrfgujp.exe	101
PID 116 wrote to memory of 2908	116	sbrfgujp.exe	101
PID 116 wrote to memory of 2908	116	sbrfgujp.exe	101
PID 116 wrote to memory of 2908	116	sbrfgujp.exe	101
PID 116 wrote to memory of 2908	116	sbrfgujp.exe	101

C:\Users\Admin\AppData\Local\Temp\de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3440
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mfkrfovj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4880
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sbrfgujp.exe" C:\Windows\SysWOW64\mfkrfovj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1040
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mfkrfovj binPath= "C:\Windows\SysWOW64\mfkrfovj\sbrfgujp.exe /d\"C:\Users\Admin\AppData\Local\Temp\de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4324
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mfkrfovj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4420
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mfkrfovj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4092
- 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:4964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3440 -s 792
  2⤵
  - Program crash
  PID:3908

C:\Windows\SysWOW64\mfkrfovj\sbrfgujp.exe
C:\Windows\SysWOW64\mfkrfovj\sbrfgujp.exe /d"C:\Users\Admin\AppData\Local\Temp\de8324c81f580d5f1f3f313224f9cee2_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:116
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 116 -s 564
  2⤵
  - Program crash
  PID:1080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3440 -ip 3440
1⤵
PID:3392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 116 -ip 116
1⤵
PID:4536

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\sbrfgujp.exe

Filesize
11.4MB

MD5
de8324c81f580d5f1f3f313224f9cee2

SHA1
e0eeaa9e3000f88f3c37c15949bc90cd45a80fab

SHA256
ee9b872015d916a29d3cb56629f02477d60ad22e62013ded3914fd72ea97f966

SHA512
d5ebd3502d271830240fceac7aacf5b2235383584c86917f825191cc351c81b4517df589d98bcc066cbeb8ecdc2108bf57974d0324f107d04e0e19493de1523c

Download Submit
memory/116-15-0x0000000000400000-0x0000000002C6D000-memory.dmp

Filesize
40.4MB

Download
memory/2908-11-0x00000000012A0000-0x00000000012B5000-memory.dmp

Filesize
84KB

Download
memory/2908-13-0x00000000012A0000-0x00000000012B5000-memory.dmp

Filesize
84KB

Download
memory/2908-14-0x00000000012A0000-0x00000000012B5000-memory.dmp

Filesize
84KB

Download
memory/3440-1-0x0000000002EB0000-0x0000000002FB0000-memory.dmp

Filesize
1024KB

Download
memory/3440-2-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/3440-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3440-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3440-9-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/3440-8-0x0000000000400000-0x0000000002C6D000-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