tofsee | 8b254ac23621062699afd739cf14061671517bb41e95ee4216cce5aac52f6fb5

General

Target

JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe
Size

10.6MB
MD5

8a339c17be9170dbbeb313831717a7e3
SHA1

23ced3569ab8478bce1023900101d902309ff0d3
SHA256

8b254ac23621062699afd739cf14061671517bb41e95ee4216cce5aac52f6fb5
SHA512

0c4f679ee20b41891097ed27e8c37e97aa04924eec6626c582d8b6a1489577189f83a329798db6ae7dcdc29cb41f0b25286d637a028939d1981a891fee9081bf
SSDEEP

196608:AxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxR:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
4396	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\nhzbwjsi\ImagePath = "C:\\Windows\\SysWOW64\\nhzbwjsi\\ntorajje.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe

Deletes itself 1 IoCs

pid	Process
2676	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2864	ntorajje.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2864 set thread context of 2676	2864	ntorajje.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2016	sc.exe
4000	sc.exe
4616	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 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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3496	1504	WerFault.exe	82
4368	2864	WerFault.exe	93

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_8a339c17be9170dbbeb313831717a7e3.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	svchost.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	ntorajje.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 1564	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	83
PID 1504 wrote to memory of 1564	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	83
PID 1504 wrote to memory of 1564	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	83
PID 1504 wrote to memory of 3568	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	85
PID 1504 wrote to memory of 3568	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	85
PID 1504 wrote to memory of 3568	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	85
PID 1504 wrote to memory of 2016	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	87
PID 1504 wrote to memory of 2016	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	87
PID 1504 wrote to memory of 2016	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	87
PID 1504 wrote to memory of 4000	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	89
PID 1504 wrote to memory of 4000	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	89
PID 1504 wrote to memory of 4000	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	89
PID 1504 wrote to memory of 4616	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	91
PID 1504 wrote to memory of 4616	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	91
PID 1504 wrote to memory of 4616	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	91
PID 1504 wrote to memory of 4396	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	94
PID 1504 wrote to memory of 4396	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	94
PID 1504 wrote to memory of 4396	1504	JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe	94
PID 2864 wrote to memory of 2676	2864	ntorajje.exe	100
PID 2864 wrote to memory of 2676	2864	ntorajje.exe	100
PID 2864 wrote to memory of 2676	2864	ntorajje.exe	100
PID 2864 wrote to memory of 2676	2864	ntorajje.exe	100
PID 2864 wrote to memory of 2676	2864	ntorajje.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nhzbwjsi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1564
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ntorajje.exe" C:\Windows\SysWOW64\nhzbwjsi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3568
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nhzbwjsi binPath= "C:\Windows\SysWOW64\nhzbwjsi\ntorajje.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nhzbwjsi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4000
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nhzbwjsi
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4616
- 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:4396
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1504 -s 1040
  2⤵
  - Program crash
  PID:3496

C:\Windows\SysWOW64\nhzbwjsi\ntorajje.exe
C:\Windows\SysWOW64\nhzbwjsi\ntorajje.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8a339c17be9170dbbeb313831717a7e3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2864
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2676
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2864 -s 536
  2⤵
  - Program crash
  PID:4368

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1504 -ip 1504
1⤵
PID:1820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2864 -ip 2864
1⤵
PID:320

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\ntorajje.exe

Filesize
10.0MB

MD5
d3f74d1967bbe39c83bf868a581caa06

SHA1
23dd85d5be15d108648f6ed1050cbac910a641d2

SHA256
670ca99f530b97c96a456aadf01e4717d46882a999a1c636bb4fdbc9bf7f1f03

SHA512
05a6fbb028c90ae620a767b1dc398e421423d0184b1bf6ecf592173b7f817b57c212a2ce7a8145bae682979747188715cf5a1ece537e30d6f262c8aab367e137

Download Submit
memory/1504-0-0x0000000003070000-0x000000000307D000-memory.dmp

Filesize
52KB

Download
memory/1504-1-0x0000000004C70000-0x0000000004C83000-memory.dmp

Filesize
76KB

Download
memory/1504-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1504-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1504-8-0x0000000004C70000-0x0000000004C83000-memory.dmp

Filesize
76KB

Download
memory/1504-7-0x0000000003070000-0x000000000307D000-memory.dmp

Filesize
52KB

Download
memory/1504-6-0x0000000000400000-0x0000000002F06000-memory.dmp

Filesize
43.0MB

Download
memory/2676-10-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download
memory/2676-12-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download
memory/2676-13-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download
memory/2864-14-0x0000000000400000-0x0000000002F06000-memory.dmp

Filesize
43.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads