tofsee | 8fe70009e9cac4931dc7e7a917595aea57040f72de25583aa001179d6ddc8c8f

General

Target

1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe
Size

14.9MB
MD5

1b6636c24173b800533d1f4b41b9b36c
SHA1

6bca80a3cbc4a085f1137955794ee6c9b41e88b7
SHA256

8fe70009e9cac4931dc7e7a917595aea57040f72de25583aa001179d6ddc8c8f
SHA512

6c15d24080fcdd50757812ea72fbd67dad34849f052da6f72a7ed019428b7cadb576db14acb058ba1620c1d78f7c6eb6ece886a7d2660e7a988b9539f1d4ece0
SSDEEP

6144:Cvk9RADRUv1CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCn:TRAD

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\jyulwixh = "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

2592 netsh.exe

pid	process
2592	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\jyulwixh\ImagePath = "C:\\Windows\\SysWOW64\\jyulwixh\\kjzvcyd.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1896 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

kjzvcyd.exe

pid process

2100 kjzvcyd.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

kjzvcyd.exe

description pid process target process

PID 2100 set thread context of 1896 2100 kjzvcyd.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

2108 sc.exe
2424 sc.exe
1828 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1896	svchost.exe

pid	process
2100	kjzvcyd.exe

description	pid	process	target process
PID 2100 set thread context of 1896	2100	kjzvcyd.exe	svchost.exe

pid	process
2108	sc.exe
2424	sc.exe
1828	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:

netsh.exesvchost.exe1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.execmd.exesc.exesc.exesc.exekjzvcyd.execmd.exe

description	ioc	process
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	1b6636c24173b800533d1f4b41b9b36c_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kjzvcyd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exekjzvcyd.exe

description	pid	process	target process
PID 1996 wrote to memory of 2236	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	cmd.exe
PID 1996 wrote to memory of 2236	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	cmd.exe
PID 1996 wrote to memory of 2236	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	cmd.exe
PID 1996 wrote to memory of 2236	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	cmd.exe
PID 1996 wrote to memory of 1796	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	cmd.exe
PID 1996 wrote to memory of 1796	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	cmd.exe
PID 1996 wrote to memory of 1796	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	cmd.exe
PID 1996 wrote to memory of 1796	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	cmd.exe
PID 1996 wrote to memory of 2108	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 1996 wrote to memory of 2108	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 1996 wrote to memory of 2108	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 1996 wrote to memory of 2108	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 1996 wrote to memory of 2424	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 1996 wrote to memory of 2424	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 1996 wrote to memory of 2424	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 1996 wrote to memory of 2424	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 1996 wrote to memory of 1828	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 1996 wrote to memory of 1828	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 1996 wrote to memory of 1828	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 1996 wrote to memory of 1828	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 2100 wrote to memory of 1896	2100	kjzvcyd.exe	svchost.exe
PID 2100 wrote to memory of 1896	2100	kjzvcyd.exe	svchost.exe
PID 2100 wrote to memory of 1896	2100	kjzvcyd.exe	svchost.exe
PID 2100 wrote to memory of 1896	2100	kjzvcyd.exe	svchost.exe
PID 2100 wrote to memory of 1896	2100	kjzvcyd.exe	svchost.exe
PID 2100 wrote to memory of 1896	2100	kjzvcyd.exe	svchost.exe
PID 1996 wrote to memory of 2592	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	netsh.exe
PID 1996 wrote to memory of 2592	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	netsh.exe
PID 1996 wrote to memory of 2592	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	netsh.exe
PID 1996 wrote to memory of 2592	1996	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jyulwixh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2236
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kjzvcyd.exe" C:\Windows\SysWOW64\jyulwixh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1796
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jyulwixh binPath= "C:\Windows\SysWOW64\jyulwixh\kjzvcyd.exe /d\"C:\Users\Admin\AppData\Local\Temp\1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2108
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jyulwixh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2424
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jyulwixh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1828
- 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:2592

C:\Windows\SysWOW64\jyulwixh\kjzvcyd.exe
C:\Windows\SysWOW64\jyulwixh\kjzvcyd.exe /d"C:\Users\Admin\AppData\Local\Temp\1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2100
- 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:1896

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\kjzvcyd.exe

Filesize
12.2MB

MD5
8f0b21717ba9137df75e3a887b783e86

SHA1
469856723623b76151a4dc37fc135e95ff766e1c

SHA256
4d1d928c7f2bec989afad1ad413cf5b3521d8d0c712d0334feb3a42256cb6c6b

SHA512
197733af0de095ca5bdb7a2a230c1f284486d3186173e37f2632e26cb5830f5bcf82843161a8bc1583e7a8d7e97d7e842ab8e6f9a7b5bbd5dad372b7e0f34ccb

Download Submit
memory/1896-10-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1896-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1896-7-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1896-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1896-15-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1996-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1996-2-0x00000000005B0000-0x00000000005B1000-memory.dmp

Filesize
4KB

Download
memory/1996-1-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/1996-13-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2100-12-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads