tofsee | af0124061f4caefe4555471bc3436aecc0a957d8d3bb3695bdd431708a5c4e1e

General

Target

28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe
Size

11.3MB
MD5

28a42f9bd803a81293892fb0cd77ddfe
SHA1

0f951b5cb9ee1fdd68d1c2ee29b5d81bc6804895
SHA256

af0124061f4caefe4555471bc3436aecc0a957d8d3bb3695bdd431708a5c4e1e
SHA512

5b7bbb0467d8aad87cced24e3b1842a6fb9045de4881fef5995515760b60a5b5f5a6516dfa44cbb3c027b7c357ce48654f7bbaed23f72413e959fabd8d51b80d
SSDEEP

3072:6NoWIXVg044YmyJc/rY/2Woct6Mz+7L00vyLf9nQLWLIMcesvKeHTQzIaH/q99QI:6NoWwy0jYBkE/vocLz+2QSLIBee8q9N

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
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
3020	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\ttsimjks\ImagePath = "C:\\Windows\\SysWOW64\\ttsimjks\\xehfggwk.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1492	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1904	xehfggwk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1904 set thread context of 1492	1904	xehfggwk.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
1020	sc.exe
4676	sc.exe
344	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xehfggwk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 548 wrote to memory of 4692	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	86
PID 548 wrote to memory of 4692	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	86
PID 548 wrote to memory of 4692	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	86
PID 548 wrote to memory of 652	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	88
PID 548 wrote to memory of 652	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	88
PID 548 wrote to memory of 652	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	88
PID 548 wrote to memory of 1020	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	90
PID 548 wrote to memory of 1020	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	90
PID 548 wrote to memory of 1020	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	90
PID 548 wrote to memory of 4676	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	92
PID 548 wrote to memory of 4676	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	92
PID 548 wrote to memory of 4676	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	92
PID 548 wrote to memory of 344	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	94
PID 548 wrote to memory of 344	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	94
PID 548 wrote to memory of 344	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	94
PID 548 wrote to memory of 3020	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	97
PID 548 wrote to memory of 3020	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	97
PID 548 wrote to memory of 3020	548	28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe	97
PID 1904 wrote to memory of 1492	1904	xehfggwk.exe	99
PID 1904 wrote to memory of 1492	1904	xehfggwk.exe	99
PID 1904 wrote to memory of 1492	1904	xehfggwk.exe	99
PID 1904 wrote to memory of 1492	1904	xehfggwk.exe	99
PID 1904 wrote to memory of 1492	1904	xehfggwk.exe	99

C:\Users\Admin\AppData\Local\Temp\28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:548
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ttsimjks\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xehfggwk.exe" C:\Windows\SysWOW64\ttsimjks\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:652
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ttsimjks binPath= "C:\Windows\SysWOW64\ttsimjks\xehfggwk.exe /d\"C:\Users\Admin\AppData\Local\Temp\28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1020
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ttsimjks "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ttsimjks
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:344
- 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:3020

C:\Windows\SysWOW64\ttsimjks\xehfggwk.exe
C:\Windows\SysWOW64\ttsimjks\xehfggwk.exe /d"C:\Users\Admin\AppData\Local\Temp\28a42f9bd803a81293892fb0cd77ddfe_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1904
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1492

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\xehfggwk.exe

Filesize
11.5MB

MD5
680a947a15b8df3193da82eeac384830

SHA1
5d83a5eb9d3fee57f834fb62b4375fe1951d62db

SHA256
2a26316e8aa43645419d54b81d5fb0b8398e6cf09f5d810f4316b82624a9af4b

SHA512
b2d1bfabb8fc0608112354ed66b7209abf69f7f0a6e3b66d05c0edc6c12881dec068cab6dbf0baf4bb07055e7c1a621e2393daea60655b3fd339a49862c34710

Download Submit
memory/548-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/548-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/548-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/548-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/548-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/548-1-0x0000000000B10000-0x0000000000C10000-memory.dmp

Filesize
1024KB

Download
memory/1492-13-0x0000000000BC0000-0x0000000000BD5000-memory.dmp

Filesize
84KB

Download
memory/1492-16-0x0000000000BC0000-0x0000000000BD5000-memory.dmp

Filesize
84KB

Download
memory/1492-18-0x0000000000BC0000-0x0000000000BD5000-memory.dmp

Filesize
84KB

Download
memory/1904-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1904-12-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1904-17-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads