tofsee | 88e38a15962ba6b86297a18b6635e6774b76cc91198c5cf432b4336610e015a2

General

Target

4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe
Size

11.9MB
MD5

4cd172768ec94c54ad538e4e07301fb8
SHA1

f908ce00f8b7df39eb89884041b354766d3082a9
SHA256

88e38a15962ba6b86297a18b6635e6774b76cc91198c5cf432b4336610e015a2
SHA512

e36edff9d68b98afa0d2124b1cb5c765eca702e5c877fa8f2524a5e7a3b098bb42574d62fc56bdff0bacbc421af196460c59f198204eee490d8eb6f256f4317c
SSDEEP

49152:Igntttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt/:I

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\zymmwpzq = "0"	svchost.exe

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

2620 netsh.exe

pid	process
2620	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\zymmwpzq\ImagePath = "C:\\Windows\\SysWOW64\\zymmwpzq\\zmyvobgq.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2440 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

zmyvobgq.exe

pid process

2568 zmyvobgq.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

zmyvobgq.exe

description pid process target process

PID 2568 set thread context of 2440 2568 zmyvobgq.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

2592 sc.exe
2884 sc.exe
1396 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2440	svchost.exe

pid	process
2568	zmyvobgq.exe

description	pid	process	target process
PID 2568 set thread context of 2440	2568	zmyvobgq.exe	svchost.exe

pid	process
2592	sc.exe
2884	sc.exe
1396	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 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

Processes:

4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.execmd.exesc.exesc.exezmyvobgq.execmd.exesc.exenetsh.exesvchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4cd172768ec94c54ad538e4e07301fb8_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zmyvobgq.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exezmyvobgq.exe

description	pid	process	target process
PID 2708 wrote to memory of 2716	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	cmd.exe
PID 2708 wrote to memory of 2716	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	cmd.exe
PID 2708 wrote to memory of 2716	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	cmd.exe
PID 2708 wrote to memory of 2716	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	cmd.exe
PID 2708 wrote to memory of 2432	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	cmd.exe
PID 2708 wrote to memory of 2432	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	cmd.exe
PID 2708 wrote to memory of 2432	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	cmd.exe
PID 2708 wrote to memory of 2432	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	cmd.exe
PID 2708 wrote to memory of 2592	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	sc.exe
PID 2708 wrote to memory of 2592	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	sc.exe
PID 2708 wrote to memory of 2592	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	sc.exe
PID 2708 wrote to memory of 2592	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	sc.exe
PID 2708 wrote to memory of 2884	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	sc.exe
PID 2708 wrote to memory of 2884	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	sc.exe
PID 2708 wrote to memory of 2884	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	sc.exe
PID 2708 wrote to memory of 2884	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	sc.exe
PID 2708 wrote to memory of 1396	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	sc.exe
PID 2708 wrote to memory of 1396	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	sc.exe
PID 2708 wrote to memory of 1396	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	sc.exe
PID 2708 wrote to memory of 1396	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	sc.exe
PID 2708 wrote to memory of 2620	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	netsh.exe
PID 2708 wrote to memory of 2620	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	netsh.exe
PID 2708 wrote to memory of 2620	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	netsh.exe
PID 2708 wrote to memory of 2620	2708	4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe	netsh.exe
PID 2568 wrote to memory of 2440	2568	zmyvobgq.exe	svchost.exe
PID 2568 wrote to memory of 2440	2568	zmyvobgq.exe	svchost.exe
PID 2568 wrote to memory of 2440	2568	zmyvobgq.exe	svchost.exe
PID 2568 wrote to memory of 2440	2568	zmyvobgq.exe	svchost.exe
PID 2568 wrote to memory of 2440	2568	zmyvobgq.exe	svchost.exe
PID 2568 wrote to memory of 2440	2568	zmyvobgq.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zymmwpzq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2716
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zmyvobgq.exe" C:\Windows\SysWOW64\zymmwpzq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2432
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zymmwpzq binPath= "C:\Windows\SysWOW64\zymmwpzq\zmyvobgq.exe /d\"C:\Users\Admin\AppData\Local\Temp\4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2592
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zymmwpzq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zymmwpzq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1396
- 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:2620

C:\Windows\SysWOW64\zymmwpzq\zmyvobgq.exe
C:\Windows\SysWOW64\zymmwpzq\zmyvobgq.exe /d"C:\Users\Admin\AppData\Local\Temp\4cd172768ec94c54ad538e4e07301fb8_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2568
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2440

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

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\zmyvobgq.exe

Filesize
13.6MB

MD5
da3885000d90e4f5f8b9fe8f1acc1f41

SHA1
45119b6f493a44e5149cffa99fbd37dbd768874e

SHA256
7b421ef9d531d224de9078c351891d7cea388d15b9cb53bccc80e4dbd67ffd47

SHA512
465d6175ff11ca20903185a8444a4446a522e9e398a192c47cfb7def10f9d18011e5edd444a4cfa0085f2c19860e02f12bd2adbc05265cefd3a80efea7c4ab9e

Download Submit
memory/2440-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2440-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2440-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2440-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2440-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2568-17-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2708-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2708-2-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2708-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2708-8-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/2708-7-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2708-1-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads