tofsee | 240967f196a84b28e897545973dd24e2f2f1b6b0e5793b2f296005d89d91f87a

General

Target

38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe
Size

10.1MB
MD5

38f15aaf745fb328eeeefd9eeb7fb715
SHA1

15ad9fd116c2fa305f3fd917901f536fae85bf5f
SHA256

240967f196a84b28e897545973dd24e2f2f1b6b0e5793b2f296005d89d91f87a
SHA512

d6e3269978f85a478875b7d33d16524a06ce959f1db77145e121dc2fa7d916d68f98dbdcba7c08705672b94e551dee2c4925f51569595b6afeb8a75a1dc9364d
SSDEEP

24576:YerU5sWbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbH:YsW

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

Processes:

netsh.exe

pid process

2004 netsh.exe

pid	process
2004	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\dyunlpuv\ImagePath = "C:\\Windows\\SysWOW64\\dyunlpuv\\llerdazb.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

Processes:

38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

llerdazb.exe

pid process

3136 llerdazb.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

llerdazb.exe

description pid process target process

PID 3136 set thread context of 4692 3136 llerdazb.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

4924 sc.exe
212 sc.exe
2208 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3136	llerdazb.exe

description	pid	process	target process
PID 3136 set thread context of 4692	3136	llerdazb.exe	svchost.exe

pid	process
4924	sc.exe
212	sc.exe
2208	sc.exe

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

Processes:

netsh.exe

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

Processes:

38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.execmd.exesc.execmd.exesc.exesc.exellerdazb.exenetsh.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.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	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	llerdazb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exellerdazb.exe

description	pid	process	target process
PID 3308 wrote to memory of 4808	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	cmd.exe
PID 3308 wrote to memory of 4808	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	cmd.exe
PID 3308 wrote to memory of 4808	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	cmd.exe
PID 3308 wrote to memory of 4540	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	cmd.exe
PID 3308 wrote to memory of 4540	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	cmd.exe
PID 3308 wrote to memory of 4540	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	cmd.exe
PID 3308 wrote to memory of 4924	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	sc.exe
PID 3308 wrote to memory of 4924	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	sc.exe
PID 3308 wrote to memory of 4924	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	sc.exe
PID 3308 wrote to memory of 212	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	sc.exe
PID 3308 wrote to memory of 212	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	sc.exe
PID 3308 wrote to memory of 212	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	sc.exe
PID 3308 wrote to memory of 2208	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	sc.exe
PID 3308 wrote to memory of 2208	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	sc.exe
PID 3308 wrote to memory of 2208	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	sc.exe
PID 3308 wrote to memory of 2004	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	netsh.exe
PID 3308 wrote to memory of 2004	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	netsh.exe
PID 3308 wrote to memory of 2004	3308	38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe	netsh.exe
PID 3136 wrote to memory of 4692	3136	llerdazb.exe	svchost.exe
PID 3136 wrote to memory of 4692	3136	llerdazb.exe	svchost.exe
PID 3136 wrote to memory of 4692	3136	llerdazb.exe	svchost.exe
PID 3136 wrote to memory of 4692	3136	llerdazb.exe	svchost.exe
PID 3136 wrote to memory of 4692	3136	llerdazb.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3308
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dyunlpuv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4808
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\llerdazb.exe" C:\Windows\SysWOW64\dyunlpuv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4540
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dyunlpuv binPath= "C:\Windows\SysWOW64\dyunlpuv\llerdazb.exe /d\"C:\Users\Admin\AppData\Local\Temp\38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4924
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dyunlpuv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dyunlpuv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2208
- 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:2004

C:\Windows\SysWOW64\dyunlpuv\llerdazb.exe
C:\Windows\SysWOW64\dyunlpuv\llerdazb.exe /d"C:\Users\Admin\AppData\Local\Temp\38f15aaf745fb328eeeefd9eeb7fb715_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3136
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - System Location Discovery: System Language Discovery
  PID:4692

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\llerdazb.exe

Filesize
12.3MB

MD5
7b50449bd05f5f49bd3edfc66fdb6d5a

SHA1
0eb53cb2c1a5cf87333b6f8cdd39d08288eeeabe

SHA256
32df2eb0b960e5a4ce1ed8ad6c3d1de6b16a8ae2ee8caa5faf478da3d49523e4

SHA512
f7e693463e609bcbe8082d54a7ab5b4d77e6d479224530ec3b4378a5dcda78756a578fab7ef1815457fc4a49e20436455ce775b4ddcc572d3076d75bc95596a7

Download Submit
memory/3136-17-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3136-8-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3308-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3308-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3308-13-0x0000000000800000-0x0000000000900000-memory.dmp

Filesize
1024KB

Download
memory/3308-14-0x00000000005C0000-0x00000000005D3000-memory.dmp

Filesize
76KB

Download
memory/3308-2-0x00000000005C0000-0x00000000005D3000-memory.dmp

Filesize
76KB

Download
memory/3308-16-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3308-1-0x0000000000800000-0x0000000000900000-memory.dmp

Filesize
1024KB

Download
memory/4692-9-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download
memory/4692-12-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download
memory/4692-19-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download
memory/4692-20-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads