tofsee | 8de7a9b847f9881f6c472acb4d995ec487c7bd2099d50338f474468f6c02599b

General

Target

JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe
Size

12.9MB
MD5

485037fcdfbbc9e974b35af5afaa2e35
SHA1

533313aa52b4c2c91e1120bb3bf141a15a439717
SHA256

8de7a9b847f9881f6c472acb4d995ec487c7bd2099d50338f474468f6c02599b
SHA512

b3b3a790b4d635f8c37eecb5431587521fefc83172ad65fd065e5752bb2ae7f2e53f46f039d2626185c05926e9155c5deb6bcaf685dd49f7c8656fc72305e071
SSDEEP

49152:cxYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY0:c

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
4240	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\bjhptkls\ImagePath = "C:\\Windows\\SysWOW64\\bjhptkls\\gyqxwnyf.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe

Deletes itself 1 IoCs

pid	Process
4476	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2288	gyqxwnyf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2288 set thread context of 4476	2288	gyqxwnyf.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1420	sc.exe
2520	sc.exe
2352	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2860	1760	WerFault.exe	81
3944	2288	WerFault.exe	92

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	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gyqxwnyf.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1760 wrote to memory of 3420	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	82
PID 1760 wrote to memory of 3420	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	82
PID 1760 wrote to memory of 3420	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	82
PID 1760 wrote to memory of 4796	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	84
PID 1760 wrote to memory of 4796	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	84
PID 1760 wrote to memory of 4796	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	84
PID 1760 wrote to memory of 1420	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	86
PID 1760 wrote to memory of 1420	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	86
PID 1760 wrote to memory of 1420	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	86
PID 1760 wrote to memory of 2520	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	88
PID 1760 wrote to memory of 2520	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	88
PID 1760 wrote to memory of 2520	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	88
PID 1760 wrote to memory of 2352	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	90
PID 1760 wrote to memory of 2352	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	90
PID 1760 wrote to memory of 2352	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	90
PID 1760 wrote to memory of 4240	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	93
PID 1760 wrote to memory of 4240	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	93
PID 1760 wrote to memory of 4240	1760	JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe	93
PID 2288 wrote to memory of 4476	2288	gyqxwnyf.exe	98
PID 2288 wrote to memory of 4476	2288	gyqxwnyf.exe	98
PID 2288 wrote to memory of 4476	2288	gyqxwnyf.exe	98
PID 2288 wrote to memory of 4476	2288	gyqxwnyf.exe	98
PID 2288 wrote to memory of 4476	2288	gyqxwnyf.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bjhptkls\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3420
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gyqxwnyf.exe" C:\Windows\SysWOW64\bjhptkls\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4796
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bjhptkls binPath= "C:\Windows\SysWOW64\bjhptkls\gyqxwnyf.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1420
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bjhptkls "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2520
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bjhptkls
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2352
- 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:4240
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1760 -s 1040
  2⤵
  - Program crash
  PID:2860

C:\Windows\SysWOW64\bjhptkls\gyqxwnyf.exe
C:\Windows\SysWOW64\bjhptkls\gyqxwnyf.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_485037fcdfbbc9e974b35af5afaa2e35.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2288
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4476
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2288 -s 516
  2⤵
  - Program crash
  PID:3944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1760 -ip 1760
1⤵
PID:1780

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2288 -ip 2288
1⤵
PID:1384

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\gyqxwnyf.exe

Filesize
13.1MB

MD5
cb18896e004324970cba1e5e0c400db2

SHA1
8949ba77c98050279b2faca00af9e547c5e81233

SHA256
2dfa1fdc709b6e1b16e046a5b636a68a109b62dc8248031a7bdeac89c916e879

SHA512
0377d8bc83a274f037dc14900fcc4ca30d4ab40baac498076d38af32037f2f53cb572ad3916d9afcd91ccd1aa44fb75f1b014ab682eb7fd098d6de3ae545734b

Download Submit
memory/1760-1-0x0000000001920000-0x0000000001A20000-memory.dmp

Filesize
1024KB

Download
memory/1760-2-0x0000000001870000-0x0000000001883000-memory.dmp

Filesize
76KB

Download
memory/1760-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1760-9-0x0000000001870000-0x0000000001883000-memory.dmp

Filesize
76KB

Download
memory/1760-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/1760-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2288-14-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2288-17-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/4476-11-0x0000000000B70000-0x0000000000B85000-memory.dmp

Filesize
84KB

Download
memory/4476-13-0x0000000000B70000-0x0000000000B85000-memory.dmp

Filesize
84KB

Download
memory/4476-15-0x0000000000B70000-0x0000000000B85000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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