tofsee | 76557e058cac01f8461dce0096df24e2fc552cc9909a89aca28c19164d75b00d

General

Target

JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe
Size

11.8MB
MD5

7c3bc71946b4af5c9477021ea9ec1203
SHA1

1b4242cf7d3ab378c4ed165a604b373aa02a5784
SHA256

76557e058cac01f8461dce0096df24e2fc552cc9909a89aca28c19164d75b00d
SHA512

69ae04d5c41aaa6a4f7fc2c2c0a6658171862850b78a831938b7ca017a250311d24de659041a32af01ced7e11590146c71807403c9bbf4a0301b5a1deb03b7b6
SSDEEP

3072:6VSA/SsuaW0G4uXQgwQpcCLti0ulGMYM1:sasBW06XQpQpFpTulG3

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.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
3656	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\hultyeuf\ImagePath = "C:\\Windows\\SysWOW64\\hultyeuf\\otggjiyd.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe

Deletes itself 1 IoCs

pid	Process
2612	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4628	otggjiyd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4628 set thread context of 2612	4628	otggjiyd.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
3132	sc.exe
3764	sc.exe
2600	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

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	otggjiyd.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 3088 wrote to memory of 748	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	82
PID 3088 wrote to memory of 748	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	82
PID 3088 wrote to memory of 748	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	82
PID 3088 wrote to memory of 2028	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	84
PID 3088 wrote to memory of 2028	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	84
PID 3088 wrote to memory of 2028	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	84
PID 3088 wrote to memory of 3132	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	86
PID 3088 wrote to memory of 3132	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	86
PID 3088 wrote to memory of 3132	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	86
PID 3088 wrote to memory of 3764	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	88
PID 3088 wrote to memory of 3764	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	88
PID 3088 wrote to memory of 3764	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	88
PID 3088 wrote to memory of 2600	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	90
PID 3088 wrote to memory of 2600	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	90
PID 3088 wrote to memory of 2600	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	90
PID 4628 wrote to memory of 2612	4628	otggjiyd.exe	93
PID 4628 wrote to memory of 2612	4628	otggjiyd.exe	93
PID 4628 wrote to memory of 2612	4628	otggjiyd.exe	93
PID 4628 wrote to memory of 2612	4628	otggjiyd.exe	93
PID 4628 wrote to memory of 2612	4628	otggjiyd.exe	93
PID 3088 wrote to memory of 3656	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	94
PID 3088 wrote to memory of 3656	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	94
PID 3088 wrote to memory of 3656	3088	JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe	94

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hultyeuf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:748
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\otggjiyd.exe" C:\Windows\SysWOW64\hultyeuf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hultyeuf binPath= "C:\Windows\SysWOW64\hultyeuf\otggjiyd.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3132
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hultyeuf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3764
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hultyeuf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2600
- 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:3656

C:\Windows\SysWOW64\hultyeuf\otggjiyd.exe
C:\Windows\SysWOW64\hultyeuf\otggjiyd.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7c3bc71946b4af5c9477021ea9ec1203.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4628
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2612

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\otggjiyd.exe

Filesize
11.0MB

MD5
34750663038efdbeb761274d29660fb8

SHA1
169178ea9fcca59ba2cc1623146d63aa76793087

SHA256
c839c8338750c9d6d28802a8c950b79be4fbb08f01b6bcd159e5073a41edca25

SHA512
27aff467c7aede804d5a21f7b255864af6c00c611f4ca8d0ac32b72bafd9377fef106ca7c35665b7dfc5684e7c5bedb2d7e6850c15173a838995373bb70bc12c

Download Submit
memory/2612-8-0x0000000000B60000-0x0000000000B75000-memory.dmp

Filesize
84KB

Download
memory/2612-12-0x0000000000B60000-0x0000000000B75000-memory.dmp

Filesize
84KB

Download
memory/2612-14-0x0000000000B60000-0x0000000000B75000-memory.dmp

Filesize
84KB

Download
memory/2612-15-0x0000000000B60000-0x0000000000B75000-memory.dmp

Filesize
84KB

Download
memory/2612-16-0x0000000000B60000-0x0000000000B75000-memory.dmp

Filesize
84KB

Download
memory/3088-0-0x00000000022E0000-0x00000000022E1000-memory.dmp

Filesize
4KB

Download
memory/3088-1-0x00000000005A0000-0x00000000005A1000-memory.dmp

Filesize
4KB

Download
memory/3088-2-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3088-13-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/4628-6-0x0000000000F30000-0x0000000000F31000-memory.dmp

Filesize
4KB

Download
memory/4628-9-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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