tofsee | f16c72dc0ac6ba541bd6f2ecbdeb8633d6468bac2c9a3aa98a320425e11fa7e5

General

Target

JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe
Size

10.4MB
MD5

24f6cb235b15df660607faf6729b9d96
SHA1

f8c74f532e72f57cd969e7e7bad3b179c7ca5471
SHA256

f16c72dc0ac6ba541bd6f2ecbdeb8633d6468bac2c9a3aa98a320425e11fa7e5
SHA512

c5a8e428f57983f9c7537916dd3a72670473317a1a89ed2837a363400e7d89cfc80d2e230b71f17ac15a3cb74f1bd0807f2ca9ffd48c0378318229efbb943576
SSDEEP

6144:ibxssrIoKMqRI49tDA498xxAoMlmC6Yvbacc1B:6O/MqRIUDA498vEN6YTp

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
2120	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\yzijhgyr\ImagePath = "C:\\Windows\\SysWOW64\\yzijhgyr\\qxjwfstn.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe

Deletes itself 1 IoCs

pid	Process
860	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1908	qxjwfstn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1908 set thread context of 860	1908	qxjwfstn.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4472	sc.exe
1424	sc.exe
1428	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
3068	4132	WerFault.exe	82
4008	1908	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_24f6cb235b15df660607faf6729b9d96.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	qxjwfstn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4132 wrote to memory of 3696	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	83
PID 4132 wrote to memory of 3696	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	83
PID 4132 wrote to memory of 3696	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	83
PID 4132 wrote to memory of 2032	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	85
PID 4132 wrote to memory of 2032	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	85
PID 4132 wrote to memory of 2032	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	85
PID 4132 wrote to memory of 4472	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	87
PID 4132 wrote to memory of 4472	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	87
PID 4132 wrote to memory of 4472	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	87
PID 4132 wrote to memory of 1424	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	89
PID 4132 wrote to memory of 1424	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	89
PID 4132 wrote to memory of 1424	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	89
PID 4132 wrote to memory of 1428	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	91
PID 4132 wrote to memory of 1428	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	91
PID 4132 wrote to memory of 1428	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	91
PID 4132 wrote to memory of 2120	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	94
PID 4132 wrote to memory of 2120	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	94
PID 4132 wrote to memory of 2120	4132	JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe	94
PID 1908 wrote to memory of 860	1908	qxjwfstn.exe	100
PID 1908 wrote to memory of 860	1908	qxjwfstn.exe	100
PID 1908 wrote to memory of 860	1908	qxjwfstn.exe	100
PID 1908 wrote to memory of 860	1908	qxjwfstn.exe	100
PID 1908 wrote to memory of 860	1908	qxjwfstn.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4132
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yzijhgyr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qxjwfstn.exe" C:\Windows\SysWOW64\yzijhgyr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2032
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yzijhgyr binPath= "C:\Windows\SysWOW64\yzijhgyr\qxjwfstn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yzijhgyr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1424
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yzijhgyr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1428
- 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:2120
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4132 -s 900
  2⤵
  - Program crash
  PID:3068

C:\Windows\SysWOW64\yzijhgyr\qxjwfstn.exe
C:\Windows\SysWOW64\yzijhgyr\qxjwfstn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_24f6cb235b15df660607faf6729b9d96.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1908
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:860
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1908 -s 540
  2⤵
  - Program crash
  PID:4008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4132 -ip 4132
1⤵
PID:3984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1908 -ip 1908
1⤵
PID:404

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\qxjwfstn.exe

Filesize
13.5MB

MD5
bd587ea66cace9f63e6bf8f0b1e5c626

SHA1
c45055696f5a7626f40188c918d03de8642a8d35

SHA256
c2874a344731428d9885f84df6ebad6e276703995dc00da90778d9b7a11af2b2

SHA512
ca55c5401c317bf1c16948a0bb6991b60fd560beb5206db1558536b2dedba93981123797d4b43e597b6b56cf941875af3b7e303865ed679c32587d148791f1e5

Download Submit
memory/860-14-0x0000000000410000-0x0000000000425000-memory.dmp

Filesize
84KB

Download
memory/860-17-0x0000000000410000-0x0000000000425000-memory.dmp

Filesize
84KB

Download
memory/860-16-0x0000000000410000-0x0000000000425000-memory.dmp

Filesize
84KB

Download
memory/1908-13-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1908-12-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1908-11-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1908-19-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4132-9-0x00000000008B0000-0x00000000008C3000-memory.dmp

Filesize
76KB

Download
memory/4132-8-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4132-1-0x00000000004A0000-0x00000000005A0000-memory.dmp

Filesize
1024KB

Download
memory/4132-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4132-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4132-2-0x00000000008B0000-0x00000000008C3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads