tofsee | 9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39

General

Target

JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe
Size

282KB
MD5

b702acbfb022d6d3eb92dc6ffa938123
SHA1

15e926de4225ea7d6996867807d9f2fc4e61428c
SHA256

9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39
SHA512

2067c8fb81095d2edeb357f70ccabc94f666c2c76b1ac9723e34ae0ffc857b9d91ee88af0a853f7054104eb21e1e0a6681e6192e2b8cff1419b4d5c9eb926cd4
SSDEEP

6144:WMnhpeoqjbg3lNpcdjewKBh0+DjQPjG6Bhrc:WMnhpeoUbANpg4rga6Bh

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
1528	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\fggqhqvz\ImagePath = "C:\\Windows\\SysWOW64\\fggqhqvz\\iytfzlph.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_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe

Deletes itself 1 IoCs

pid	Process
1120	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1580	iytfzlph.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1580 set thread context of 1120	1580	iytfzlph.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3052	sc.exe
2928	sc.exe
1532	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
3780	4576	WerFault.exe	81
4408	1580	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	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	iytfzlph.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4576 wrote to memory of 3672	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	82
PID 4576 wrote to memory of 3672	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	82
PID 4576 wrote to memory of 3672	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	82
PID 4576 wrote to memory of 4660	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	84
PID 4576 wrote to memory of 4660	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	84
PID 4576 wrote to memory of 4660	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	84
PID 4576 wrote to memory of 2928	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	86
PID 4576 wrote to memory of 2928	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	86
PID 4576 wrote to memory of 2928	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	86
PID 4576 wrote to memory of 1532	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	88
PID 4576 wrote to memory of 1532	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	88
PID 4576 wrote to memory of 1532	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	88
PID 4576 wrote to memory of 3052	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	90
PID 4576 wrote to memory of 3052	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	90
PID 4576 wrote to memory of 3052	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	90
PID 4576 wrote to memory of 1528	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	93
PID 4576 wrote to memory of 1528	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	93
PID 4576 wrote to memory of 1528	4576	JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe	93
PID 1580 wrote to memory of 1120	1580	iytfzlph.exe	98
PID 1580 wrote to memory of 1120	1580	iytfzlph.exe	98
PID 1580 wrote to memory of 1120	1580	iytfzlph.exe	98
PID 1580 wrote to memory of 1120	1580	iytfzlph.exe	98
PID 1580 wrote to memory of 1120	1580	iytfzlph.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4576
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fggqhqvz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\iytfzlph.exe" C:\Windows\SysWOW64\fggqhqvz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fggqhqvz binPath= "C:\Windows\SysWOW64\fggqhqvz\iytfzlph.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fggqhqvz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1532
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fggqhqvz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3052
- 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:1528
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4576 -s 1196
  2⤵
  - Program crash
  PID:3780

C:\Windows\SysWOW64\fggqhqvz\iytfzlph.exe
C:\Windows\SysWOW64\fggqhqvz\iytfzlph.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9f542dda8238a115cff9cf890c0f330f82d9f7431a4e1efc3836923cba8c9d39.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1580
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1120
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 532
  2⤵
  - Program crash
  PID:4408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4576 -ip 4576
1⤵
PID:1912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1580 -ip 1580
1⤵
PID:2036

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\iytfzlph.exe

Filesize
11.9MB

MD5
230bbf5ea081cffa9326efc9bafac0aa

SHA1
b1b55d2446073294256a62246f2599b58b64ae82

SHA256
6c030a2d3f84f4d5c4cc133e4f3ca869850126692e21859c3b6edb5f4dbe0d56

SHA512
0b87911e58e8547f777680134689374c6b406cb728620654a8d777581515c47f8995bb1d85de418c2cb08c377ed96f709407078bb04d60218d085cedf98ae790

Download Submit
memory/1120-11-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/1120-13-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/1120-14-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/1580-15-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/4576-1-0x0000000002E50000-0x0000000002F50000-memory.dmp

Filesize
1024KB

Download
memory/4576-2-0x0000000002C00000-0x0000000002C13000-memory.dmp

Filesize
76KB

Download
memory/4576-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4576-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4576-9-0x0000000002C00000-0x0000000002C13000-memory.dmp

Filesize
76KB

Download
memory/4576-8-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads