tofsee | c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2

General

Target

JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe
Size

290KB
MD5

e758d3f8e1a43e4b8fd0c982394216a0
SHA1

b8713215a45d83019881f18215f044bac9073a4f
SHA256

c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2
SHA512

fd099504787bf3644253ea503cc742ad07fb1abfc96524649137050c9f597950a0686749df76a6afcf54698d7cfe91d24e6062d1f99132b784b9ffac0357493f
SSDEEP

6144:cKda0k5CPY6+hdbbIPyISpx+dGYIS2oWPfG/5J:cK2cPP+hdbbIapKt2O

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

niflheimr.cn

jotunheim.name

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
2452	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\ueyixnfl\ImagePath = "C:\\Windows\\SysWOW64\\ueyixnfl\\itjiadbb.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe

Deletes itself 1 IoCs

pid	Process
3068	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3336	itjiadbb.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\config\systemprofile:.repos	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3336 set thread context of 3068	3336	itjiadbb.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
3916	sc.exe
3344	sc.exe
3540	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
4580	4272	WerFault.exe	82
4888	3336	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	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	itjiadbb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Modifies data under HKEY_USERS 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Control Panel\Buses	svchost.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Control Panel\Buses\Config0 = 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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4272 wrote to memory of 4832	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	83
PID 4272 wrote to memory of 4832	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	83
PID 4272 wrote to memory of 4832	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	83
PID 4272 wrote to memory of 4772	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	85
PID 4272 wrote to memory of 4772	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	85
PID 4272 wrote to memory of 4772	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	85
PID 4272 wrote to memory of 3540	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	87
PID 4272 wrote to memory of 3540	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	87
PID 4272 wrote to memory of 3540	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	87
PID 4272 wrote to memory of 3916	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	89
PID 4272 wrote to memory of 3916	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	89
PID 4272 wrote to memory of 3916	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	89
PID 4272 wrote to memory of 3344	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	92
PID 4272 wrote to memory of 3344	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	92
PID 4272 wrote to memory of 3344	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	92
PID 4272 wrote to memory of 2452	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	95
PID 4272 wrote to memory of 2452	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	95
PID 4272 wrote to memory of 2452	4272	JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe	95
PID 3336 wrote to memory of 3068	3336	itjiadbb.exe	99
PID 3336 wrote to memory of 3068	3336	itjiadbb.exe	99
PID 3336 wrote to memory of 3068	3336	itjiadbb.exe	99
PID 3336 wrote to memory of 3068	3336	itjiadbb.exe	99
PID 3336 wrote to memory of 3068	3336	itjiadbb.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4272
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ueyixnfl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4832
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\itjiadbb.exe" C:\Windows\SysWOW64\ueyixnfl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4772
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ueyixnfl binPath= "C:\Windows\SysWOW64\ueyixnfl\itjiadbb.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3540
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ueyixnfl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3916
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ueyixnfl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3344
- 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:2452
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4272 -s 1208
  2⤵
  - Program crash
  PID:4580

C:\Windows\SysWOW64\ueyixnfl\itjiadbb.exe
C:\Windows\SysWOW64\ueyixnfl\itjiadbb.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c95de79d76a72a2b6ce211f6a626f575a5f6df83726a25acb84ebf3d095650a2.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3336
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies data under HKEY_USERS
  PID:3068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3336 -s 512
  2⤵
  - Program crash
  PID:4888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4272 -ip 4272
1⤵
PID:1140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3336 -ip 3336
1⤵
PID:668

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\itjiadbb.exe

Filesize
14.0MB

MD5
c164b3555edd34c23b6fdc107a773df2

SHA1
50530da3b75cd3ec188be4a530d4599a162bf550

SHA256
2b1e8672c3fe73c78b4b740e6b243bd61d474f554a7e745ccb73cfc8997c2495

SHA512
1a625687cf7cdc1b38038725403d627b79f93d9c7d71535d687845b3335526f2add25b7bcc2f3d3d14f7eb66e2ce1b14587a3c0c6d4c9bc0e4fb65ff1851e704

Download Submit
memory/3068-10-0x00000000007D0000-0x00000000007E5000-memory.dmp

Filesize
84KB

Download
memory/3068-14-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/3068-21-0x00000000007D0000-0x00000000007E5000-memory.dmp

Filesize
84KB

Download
memory/3068-20-0x00000000007D0000-0x00000000007E5000-memory.dmp

Filesize
84KB

Download
memory/3336-16-0x0000000000400000-0x0000000000489000-memory.dmp

Filesize
548KB

Download
memory/3336-9-0x0000000000400000-0x0000000000489000-memory.dmp

Filesize
548KB

Download
memory/3336-8-0x0000000000400000-0x0000000000489000-memory.dmp

Filesize
548KB

Download
memory/4272-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download
memory/4272-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4272-13-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download
memory/4272-17-0x0000000000400000-0x0000000000489000-memory.dmp

Filesize
548KB

Download
memory/4272-19-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4272-18-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4272-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads