tofsee | f6e70b26765b49fd6cdf53f9daf841d8f482ce48eb1a18134dc0a65ebc1f574d

General

Target

JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe
Size

11.0MB
MD5

c18ecc99377a256ddfd4b6d77ee1d24f
SHA1

1ed1af1cf166a964e232e6ac458b6c4af5ef0721
SHA256

f6e70b26765b49fd6cdf53f9daf841d8f482ce48eb1a18134dc0a65ebc1f574d
SHA512

440d63acf2d318ba3f16c7b5972c4bc86687b9077d268b3e34d03253ecc204c057046156894e69990427488e41e435273d27d2b6d30b4f1c7109552988596938
SSDEEP

6144:zrZQVnJzxj5nP76vk7wQ6udJm1lzvGCUWlnpj:fZ2zxj5nPmRQ6QgjzOCnl

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
2316	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\gbcufwqb\ImagePath = "C:\\Windows\\SysWOW64\\gbcufwqb\\szlyhuvp.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe

Deletes itself 1 IoCs

pid	Process
4240	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2152	szlyhuvp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2152 set thread context of 4240	2152	szlyhuvp.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3312	sc.exe
2248	sc.exe
2280	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
1088	4016	WerFault.exe	82
2752	2152	WerFault.exe	93

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.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
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	szlyhuvp.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4016 wrote to memory of 4752	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	83
PID 4016 wrote to memory of 4752	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	83
PID 4016 wrote to memory of 4752	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	83
PID 4016 wrote to memory of 2388	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	85
PID 4016 wrote to memory of 2388	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	85
PID 4016 wrote to memory of 2388	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	85
PID 4016 wrote to memory of 3312	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	87
PID 4016 wrote to memory of 3312	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	87
PID 4016 wrote to memory of 3312	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	87
PID 4016 wrote to memory of 2248	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	89
PID 4016 wrote to memory of 2248	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	89
PID 4016 wrote to memory of 2248	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	89
PID 4016 wrote to memory of 2280	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	91
PID 4016 wrote to memory of 2280	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	91
PID 4016 wrote to memory of 2280	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	91
PID 4016 wrote to memory of 2316	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	94
PID 4016 wrote to memory of 2316	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	94
PID 4016 wrote to memory of 2316	4016	JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe	94
PID 2152 wrote to memory of 4240	2152	szlyhuvp.exe	100
PID 2152 wrote to memory of 4240	2152	szlyhuvp.exe	100
PID 2152 wrote to memory of 4240	2152	szlyhuvp.exe	100
PID 2152 wrote to memory of 4240	2152	szlyhuvp.exe	100
PID 2152 wrote to memory of 4240	2152	szlyhuvp.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4016
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gbcufwqb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4752
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\szlyhuvp.exe" C:\Windows\SysWOW64\gbcufwqb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gbcufwqb binPath= "C:\Windows\SysWOW64\gbcufwqb\szlyhuvp.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3312
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gbcufwqb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2248
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gbcufwqb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2280
- 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:2316
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4016 -s 1252
  2⤵
  - Program crash
  PID:1088

C:\Windows\SysWOW64\gbcufwqb\szlyhuvp.exe
C:\Windows\SysWOW64\gbcufwqb\szlyhuvp.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c18ecc99377a256ddfd4b6d77ee1d24f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2152
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4240
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2152 -s 440
  2⤵
  - Program crash
  PID:2752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4016 -ip 4016
1⤵
PID:1016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2152 -ip 2152
1⤵
PID:4432

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\szlyhuvp.exe

Filesize
11.0MB

MD5
fa8de1f314ece3c8ce05bf48d8c9a774

SHA1
980b84eff87fe0ed72e470253362e9092e174ba8

SHA256
acd300c89527e8623266231cb90f242d880ec69887c310e5b121345ecde5ddea

SHA512
93e0e134d7e9e5875cf38d5ddc59e954a89542c456ba667128ad3b793cb55dba07b1f0e5c23167d7a76211f2301d775219671346c47669b823dd21754ab130ba

Download Submit
memory/2152-11-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2152-18-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2152-12-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4016-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4016-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4016-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

Filesize
1024KB

Download
memory/4016-9-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4016-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4016-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4240-13-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download
memory/4240-15-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download
memory/4240-16-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads