tofsee | 76fa8299b49e3b8ebc0ba2cd18511e79296c56d876207d746d8da9e78309f290

General

Target

JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe
Size

10.2MB
MD5

27366070a9e038ef805b5c77ac0d5a89
SHA1

89a4274725bb495bb762b803d14fce437990f081
SHA256

76fa8299b49e3b8ebc0ba2cd18511e79296c56d876207d746d8da9e78309f290
SHA512

9eac9bc09fd92a9d68eef35872b42a36d5ce9eb2d6fa5960d88791e12436eb55f4369f449b5cd89fa45e3d6e3fed63afc64dd831c17d11db42ff053c23570cd4
SSDEEP

6144:VpZQC4h2Yaltbf2O133EhKew3Oj2GYdK:LZ8altbfDEhFCfG

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
Tofsee family
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
3128	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\isqdymoc\ImagePath = "C:\\Windows\\SysWOW64\\isqdymoc\\lfoylotf.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	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe

Deletes itself 1 IoCs

pid	Process
3532	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1376	lfoylotf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1376 set thread context of 3532	1376	lfoylotf.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
2112	sc.exe
2388	sc.exe
456	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 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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3656	2076	WerFault.exe	82
2872	1376	WerFault.exe	94

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	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lfoylotf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 4120	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	83
PID 2076 wrote to memory of 4120	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	83
PID 2076 wrote to memory of 4120	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	83
PID 2076 wrote to memory of 4412	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	85
PID 2076 wrote to memory of 4412	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	85
PID 2076 wrote to memory of 4412	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	85
PID 2076 wrote to memory of 2112	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	87
PID 2076 wrote to memory of 2112	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	87
PID 2076 wrote to memory of 2112	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	87
PID 2076 wrote to memory of 2388	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	89
PID 2076 wrote to memory of 2388	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	89
PID 2076 wrote to memory of 2388	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	89
PID 2076 wrote to memory of 456	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	92
PID 2076 wrote to memory of 456	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	92
PID 2076 wrote to memory of 456	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	92
PID 2076 wrote to memory of 3128	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	95
PID 2076 wrote to memory of 3128	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	95
PID 2076 wrote to memory of 3128	2076	JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe	95
PID 1376 wrote to memory of 3532	1376	lfoylotf.exe	101
PID 1376 wrote to memory of 3532	1376	lfoylotf.exe	101
PID 1376 wrote to memory of 3532	1376	lfoylotf.exe	101
PID 1376 wrote to memory of 3532	1376	lfoylotf.exe	101
PID 1376 wrote to memory of 3532	1376	lfoylotf.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2076
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\isqdymoc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4120
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lfoylotf.exe" C:\Windows\SysWOW64\isqdymoc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4412
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create isqdymoc binPath= "C:\Windows\SysWOW64\isqdymoc\lfoylotf.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2112
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description isqdymoc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start isqdymoc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:456
- 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:3128
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2076 -s 640
  2⤵
  - Program crash
  PID:3656

C:\Windows\SysWOW64\isqdymoc\lfoylotf.exe
C:\Windows\SysWOW64\isqdymoc\lfoylotf.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_27366070a9e038ef805b5c77ac0d5a89.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1376
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3532
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1376 -s 560
  2⤵
  - Program crash
  PID:2872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2076 -ip 2076
1⤵
PID:944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1376 -ip 1376
1⤵
PID:4704

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\lfoylotf.exe

Filesize
11.3MB

MD5
784dbaf28e4f19e9c132d3d0333d833f

SHA1
b0ea598a04c33492a07d24778c7452c186a5cb59

SHA256
7794dc97362fe0a43be3584251ffcf42e301f69b3b30ccac635fd24df46c104c

SHA512
a3de8c5122aa20146f0422a6b5adff7bb97fce7a198b1f9a2415db2a738edaaf1712e286b0660e81e5589e84fdd91880ba9ce686eee7e5401256230015b2eda4

Download Submit
memory/1376-12-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1376-11-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1376-13-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1376-18-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2076-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2076-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2076-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2076-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2076-8-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2076-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/3532-14-0x00000000007E0000-0x00000000007F5000-memory.dmp

Filesize
84KB

Download
memory/3532-16-0x00000000007E0000-0x00000000007F5000-memory.dmp

Filesize
84KB

Download
memory/3532-17-0x00000000007E0000-0x00000000007F5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads