tofsee | 74529db33360427d99adc6bf7612de131512a168d53545f358493792d5ee730b

General

Target

1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe
Size

13.2MB
MD5

1f6b89b430e231b22fcc8e9031cd0307
SHA1

e712dd589e73cf6ad5a6eb4d8afa9e84885a0983
SHA256

74529db33360427d99adc6bf7612de131512a168d53545f358493792d5ee730b
SHA512

3dbe60bb5bab9337b23f159b3553e6fe2cb17c292d8af06a13bb943b3a07ca100eaddc8f0ddd4826efde73185174de7d0caaee06966256b45f15d1e9d7b9da6e
SSDEEP

6144:BrZQVnJzxj5nP76vk7wQ6udJm1lzvGCUWlnpj:dZ2zxj5nPmRQ6QgjzOCnl

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

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\pjmjrmkd = "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

2888 netsh.exe

pid	process
2888	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\pjmjrmkd\ImagePath = "C:\\Windows\\SysWOW64\\pjmjrmkd\\wzxsmtdn.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2692 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

wzxsmtdn.exe

pid process

2856 wzxsmtdn.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

wzxsmtdn.exe

description pid process target process

PID 2856 set thread context of 2692 2856 wzxsmtdn.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

2144 sc.exe
2876 sc.exe
2132 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2692	svchost.exe

pid	process
2856	wzxsmtdn.exe

description	pid	process	target process
PID 2856 set thread context of 2692	2856	wzxsmtdn.exe	svchost.exe

pid	process
2144	sc.exe
2876	sc.exe
2132	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:

cmd.exesc.exenetsh.exesvchost.exe1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.execmd.exesc.exesc.exewzxsmtdn.exe

description	ioc	process
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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1f6b89b430e231b22fcc8e9031cd0307_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	wzxsmtdn.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exewzxsmtdn.exe

description	pid	process	target process
PID 1520 wrote to memory of 1944	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	cmd.exe
PID 1520 wrote to memory of 1944	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	cmd.exe
PID 1520 wrote to memory of 1944	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	cmd.exe
PID 1520 wrote to memory of 1944	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	cmd.exe
PID 1520 wrote to memory of 2232	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	cmd.exe
PID 1520 wrote to memory of 2232	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	cmd.exe
PID 1520 wrote to memory of 2232	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	cmd.exe
PID 1520 wrote to memory of 2232	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	cmd.exe
PID 1520 wrote to memory of 2132	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	sc.exe
PID 1520 wrote to memory of 2132	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	sc.exe
PID 1520 wrote to memory of 2132	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	sc.exe
PID 1520 wrote to memory of 2132	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	sc.exe
PID 1520 wrote to memory of 2144	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	sc.exe
PID 1520 wrote to memory of 2144	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	sc.exe
PID 1520 wrote to memory of 2144	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	sc.exe
PID 1520 wrote to memory of 2144	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	sc.exe
PID 1520 wrote to memory of 2876	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	sc.exe
PID 1520 wrote to memory of 2876	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	sc.exe
PID 1520 wrote to memory of 2876	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	sc.exe
PID 1520 wrote to memory of 2876	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	sc.exe
PID 1520 wrote to memory of 2888	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	netsh.exe
PID 1520 wrote to memory of 2888	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	netsh.exe
PID 1520 wrote to memory of 2888	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	netsh.exe
PID 1520 wrote to memory of 2888	1520	1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe	netsh.exe
PID 2856 wrote to memory of 2692	2856	wzxsmtdn.exe	svchost.exe
PID 2856 wrote to memory of 2692	2856	wzxsmtdn.exe	svchost.exe
PID 2856 wrote to memory of 2692	2856	wzxsmtdn.exe	svchost.exe
PID 2856 wrote to memory of 2692	2856	wzxsmtdn.exe	svchost.exe
PID 2856 wrote to memory of 2692	2856	wzxsmtdn.exe	svchost.exe
PID 2856 wrote to memory of 2692	2856	wzxsmtdn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1520
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pjmjrmkd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1944
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wzxsmtdn.exe" C:\Windows\SysWOW64\pjmjrmkd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2232
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pjmjrmkd binPath= "C:\Windows\SysWOW64\pjmjrmkd\wzxsmtdn.exe /d\"C:\Users\Admin\AppData\Local\Temp\1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2132
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pjmjrmkd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2144
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pjmjrmkd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2876
- 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:2888

C:\Windows\SysWOW64\pjmjrmkd\wzxsmtdn.exe
C:\Windows\SysWOW64\pjmjrmkd\wzxsmtdn.exe /d"C:\Users\Admin\AppData\Local\Temp\1f6b89b430e231b22fcc8e9031cd0307_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2856
- 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:2692

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\wzxsmtdn.exe

Filesize
12.4MB

MD5
e6823409992feb8821b7c064d179825f

SHA1
0d3de33246ee90d63cc1c730ba8e6f23c73d60a3

SHA256
9e2a458eef22790f169a341d4de85c5cbc70aa19e278fdb73b398dc8478cee14

SHA512
9c38a119b968dfeae78ec9d6d1de015547b0477afe5d8110730093b2cad8555ab8b87df022d86fc4f7ba73181940a40184d42f563cf59ce49409076ee6c0e370

Download Submit
memory/1520-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1520-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1520-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1520-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1520-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1520-1-0x00000000004D0000-0x00000000005D0000-memory.dmp

Filesize
1024KB

Download
memory/2692-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2692-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2692-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2692-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2692-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2856-15-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads