tofsee | 542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c

General

Target

JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe
Size

241KB
MD5

26f82c93b67c17fdc57eb442a9f75cc4
SHA1

a3532ef0fc60cefd6923341449c927812190334a
SHA256

542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c
SHA512

2afc90bce64ca13059ae3861daca7319d216956aeecf935be596c09211c53f1f0b81b0bb5159282d6ac7f7805e762c7d584d8d01565cbd6cd2e76d6672710167
SSDEEP

6144:Dvv4iHVncWHsZO694FdXKde7cIncP3Nw:Dvv4iHVrsZO6mdXF7cInE

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
2724	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\mhwktyre\ImagePath = "C:\\Windows\\SysWOW64\\mhwktyre\\tfmglrem.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_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe

Deletes itself 1 IoCs

pid	Process
4952	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4672	tfmglrem.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4672 set thread context of 4952	4672	tfmglrem.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3948	sc.exe
756	sc.exe
2716	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
184	404	WerFault.exe	81
1496	4672	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	svchost.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	tfmglrem.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 404 wrote to memory of 2056	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	82
PID 404 wrote to memory of 2056	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	82
PID 404 wrote to memory of 2056	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	82
PID 404 wrote to memory of 4280	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	84
PID 404 wrote to memory of 4280	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	84
PID 404 wrote to memory of 4280	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	84
PID 404 wrote to memory of 3948	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	86
PID 404 wrote to memory of 3948	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	86
PID 404 wrote to memory of 3948	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	86
PID 404 wrote to memory of 756	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	88
PID 404 wrote to memory of 756	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	88
PID 404 wrote to memory of 756	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	88
PID 404 wrote to memory of 2716	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	90
PID 404 wrote to memory of 2716	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	90
PID 404 wrote to memory of 2716	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	90
PID 404 wrote to memory of 2724	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	93
PID 404 wrote to memory of 2724	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	93
PID 404 wrote to memory of 2724	404	JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe	93
PID 4672 wrote to memory of 4952	4672	tfmglrem.exe	98
PID 4672 wrote to memory of 4952	4672	tfmglrem.exe	98
PID 4672 wrote to memory of 4952	4672	tfmglrem.exe	98
PID 4672 wrote to memory of 4952	4672	tfmglrem.exe	98
PID 4672 wrote to memory of 4952	4672	tfmglrem.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:404
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mhwktyre\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tfmglrem.exe" C:\Windows\SysWOW64\mhwktyre\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4280
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mhwktyre binPath= "C:\Windows\SysWOW64\mhwktyre\tfmglrem.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mhwktyre "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:756
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mhwktyre
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2716
- 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:2724
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 404 -s 1188
  2⤵
  - Program crash
  PID:184

C:\Windows\SysWOW64\mhwktyre\tfmglrem.exe
C:\Windows\SysWOW64\mhwktyre\tfmglrem.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_542c1a097f2a8a8b3dd27713ce3fc0873d64bb255f43265a577d0537adb0e95c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4672
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4672 -s 516
  2⤵
  - Program crash
  PID:1496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 404 -ip 404
1⤵
PID:4180

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4672 -ip 4672
1⤵
PID:5004

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\tfmglrem.exe

Filesize
14.4MB

MD5
d0df90d96713e3472031e62f4ceaf773

SHA1
2b62358bfcf1e0f0825781dd613fbe646140c2c1

SHA256
3860762da07ec9ac14a712845b39e279b0ff62ad838997937755b55e9cef6d6e

SHA512
58fd2c58962f7b798d7c23a58eb5dcef7f454bca5ac2f0085a327cc151831ea7ee51f1739e3e089c83a89b5c84a2fa2dec073c992d8a639c2c55564b64d037e5

Download Submit
memory/404-8-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/404-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/404-2-0x0000000000CE0000-0x0000000000CF3000-memory.dmp

Filesize
76KB

Download
memory/404-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/404-9-0x0000000000CE0000-0x0000000000CF3000-memory.dmp

Filesize
76KB

Download
memory/404-1-0x00000000009E0000-0x0000000000AE0000-memory.dmp

Filesize
1024KB

Download
memory/4672-11-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/4672-12-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/4672-13-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/4672-18-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/4952-14-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/4952-16-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/4952-17-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads