tofsee | f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6

General

Target

JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe
Size

328KB
MD5

72be89fc9c2bd735f9b40d82ac5d3bb2
SHA1

c65548b1d08b08a4d8c1715bb409d7aa22e46ec9
SHA256

f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6
SHA512

e89142b74bcde35d67625d634b51bb1e89abfbb206c648d880909b8ed1fb0c2fe077e2bc716510dc7b4c66023bcc18d01a815db16af7ca41d772d8b6bb54d936
SSDEEP

6144:ec1WtXis27paIC6bNAJIZMVfwozbBbnS32KtD+gxGPY7EL7R:enZkMDF1bnS32KtNxUga

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
2376	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\cwhjtcsz\ImagePath = "C:\\Windows\\SysWOW64\\cwhjtcsz\\nfxedufm.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe

Deletes itself 1 IoCs

pid	Process
2028	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5020	nfxedufm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5020 set thread context of 2028	5020	nfxedufm.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3724	sc.exe
3164	sc.exe
3644	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
3220	4024	WerFault.exe	82
3136	5020	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nfxedufm.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	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4024 wrote to memory of 4060	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	83
PID 4024 wrote to memory of 4060	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	83
PID 4024 wrote to memory of 4060	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	83
PID 4024 wrote to memory of 1912	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	86
PID 4024 wrote to memory of 1912	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	86
PID 4024 wrote to memory of 1912	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	86
PID 4024 wrote to memory of 3724	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	88
PID 4024 wrote to memory of 3724	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	88
PID 4024 wrote to memory of 3724	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	88
PID 4024 wrote to memory of 3164	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	90
PID 4024 wrote to memory of 3164	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	90
PID 4024 wrote to memory of 3164	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	90
PID 4024 wrote to memory of 3644	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	92
PID 4024 wrote to memory of 3644	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	92
PID 4024 wrote to memory of 3644	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	92
PID 4024 wrote to memory of 2376	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	95
PID 4024 wrote to memory of 2376	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	95
PID 4024 wrote to memory of 2376	4024	JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe	95
PID 5020 wrote to memory of 2028	5020	nfxedufm.exe	101
PID 5020 wrote to memory of 2028	5020	nfxedufm.exe	101
PID 5020 wrote to memory of 2028	5020	nfxedufm.exe	101
PID 5020 wrote to memory of 2028	5020	nfxedufm.exe	101
PID 5020 wrote to memory of 2028	5020	nfxedufm.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4024
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cwhjtcsz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nfxedufm.exe" C:\Windows\SysWOW64\cwhjtcsz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cwhjtcsz binPath= "C:\Windows\SysWOW64\cwhjtcsz\nfxedufm.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3724
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cwhjtcsz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3164
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cwhjtcsz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3644
- 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:2376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4024 -s 1164
  2⤵
  - Program crash
  PID:3220

C:\Windows\SysWOW64\cwhjtcsz\nfxedufm.exe
C:\Windows\SysWOW64\cwhjtcsz\nfxedufm.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5e8eb630af68376b3852ca12581990d0786053b607fc457f3a95d2b8a2d9ee6.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5020
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5020 -s 512
  2⤵
  - Program crash
  PID:3136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4024 -ip 4024
1⤵
PID:5096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 5020 -ip 5020
1⤵
PID:2536

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\nfxedufm.exe

Filesize
14.1MB

MD5
06b72e6f47b04fe8d1a94ce43412600f

SHA1
72c54479fd61dc22975a2fd2a5e45b04390cf063

SHA256
5d74721d20da6acd3e6f43d66917353f813f46f0fc79a3fbafe1c22171b5678c

SHA512
003d7314891cafe6769a8f1c54cdde6b94180a37a11d009eb7ec35df91b26e64dfc541e0668c6f7379f420cacb15e3b6e7ff67de9c03b39c922b818fd44c463f

Download Submit
memory/2028-11-0x0000000000850000-0x0000000000865000-memory.dmp

Filesize
84KB

Download
memory/2028-13-0x0000000000850000-0x0000000000865000-memory.dmp

Filesize
84KB

Download
memory/2028-14-0x0000000000850000-0x0000000000865000-memory.dmp

Filesize
84KB

Download
memory/4024-1-0x0000000002810000-0x0000000002910000-memory.dmp

Filesize
1024KB

Download
memory/4024-2-0x00000000044C0000-0x00000000044D3000-memory.dmp

Filesize
76KB

Download
memory/4024-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4024-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4024-8-0x00000000044C0000-0x00000000044D3000-memory.dmp

Filesize
76KB

Download
memory/4024-7-0x0000000000400000-0x0000000002779000-memory.dmp

Filesize
35.5MB

Download
memory/5020-15-0x0000000000400000-0x0000000002779000-memory.dmp

Filesize
35.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads