tofsee | 1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6

General

Target

JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe
Size

238KB
MD5

9b58fb125967b2e13c612fd5914b88a3
SHA1

64b1235daa9bf5626f103de55fbda99f07bd1bb2
SHA256

1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6
SHA512

988e330b7ffad344211ad85aaf5e7a42efa9f922aa72ad7fa7ba15aace22c914d0e2af5557edfffbdc9d0fd68c180249542c99ba81f0883f8471e070b1d9f923
SSDEEP

6144:G1ZQ7rqS/SWrdP8m/0B3GETtrLNCE9ZvKHy/o9:IZDWrdP8sET5L1/A6o9

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
2916	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\fezrftk\ImagePath = "C:\\Windows\\SysWOW64\\fezrftk\\zlgdkjjx.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe

Deletes itself 1 IoCs

pid	Process
3264	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2700	zlgdkjjx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2700 set thread context of 3264	2700	zlgdkjjx.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4268	sc.exe
2896	sc.exe
3520	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
112	4404	WerFault.exe	81
2988	2700	WerFault.exe	92

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zlgdkjjx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4404 wrote to memory of 1356	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	82
PID 4404 wrote to memory of 1356	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	82
PID 4404 wrote to memory of 1356	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	82
PID 4404 wrote to memory of 964	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	84
PID 4404 wrote to memory of 964	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	84
PID 4404 wrote to memory of 964	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	84
PID 4404 wrote to memory of 4268	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	86
PID 4404 wrote to memory of 4268	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	86
PID 4404 wrote to memory of 4268	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	86
PID 4404 wrote to memory of 2896	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	88
PID 4404 wrote to memory of 2896	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	88
PID 4404 wrote to memory of 2896	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	88
PID 4404 wrote to memory of 3520	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	90
PID 4404 wrote to memory of 3520	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	90
PID 4404 wrote to memory of 3520	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	90
PID 4404 wrote to memory of 2916	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	93
PID 4404 wrote to memory of 2916	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	93
PID 4404 wrote to memory of 2916	4404	JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe	93
PID 2700 wrote to memory of 3264	2700	zlgdkjjx.exe	98
PID 2700 wrote to memory of 3264	2700	zlgdkjjx.exe	98
PID 2700 wrote to memory of 3264	2700	zlgdkjjx.exe	98
PID 2700 wrote to memory of 3264	2700	zlgdkjjx.exe	98
PID 2700 wrote to memory of 3264	2700	zlgdkjjx.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4404
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fezrftk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1356
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zlgdkjjx.exe" C:\Windows\SysWOW64\fezrftk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:964
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fezrftk binPath= "C:\Windows\SysWOW64\fezrftk\zlgdkjjx.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4268
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fezrftk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2896
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fezrftk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3520
- 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:2916
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 1040
  2⤵
  - Program crash
  PID:112

C:\Windows\SysWOW64\fezrftk\zlgdkjjx.exe
C:\Windows\SysWOW64\fezrftk\zlgdkjjx.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1169ad7e7d5ef548ba83516573609de08e98c4b44ec21b9a85f38ff608ef2ba6.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2700
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3264
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2700 -s 508
  2⤵
  - Program crash
  PID:2988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4404 -ip 4404
1⤵
PID:4772

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2700 -ip 2700
1⤵
PID:3428

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\zlgdkjjx.exe

Filesize
13.3MB

MD5
3717b15bc5672c2e5485b49894640194

SHA1
8c4537f2703f2ddd90c9ba5fa21f2e7c6ae60f00

SHA256
9ad4e1f50c6332c4f2f9dbeafd06ad1647986612cf23b889622a9f568b7f14b6

SHA512
0eaba02b7b94d26afb34e79a7e37757240513f999de2dcc2ad8d57d011ecfd0e0bd1ec3a71278995546bf567f5f34d15e3b886c1e81e8cb14f2571f4b91230c6

Download Submit
memory/2700-13-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2700-12-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2700-11-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2700-19-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/3264-14-0x0000000000D70000-0x0000000000D85000-memory.dmp

Filesize
84KB

Download
memory/3264-16-0x0000000000D70000-0x0000000000D85000-memory.dmp

Filesize
84KB

Download
memory/3264-17-0x0000000000D70000-0x0000000000D85000-memory.dmp

Filesize
84KB

Download
memory/4404-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4404-2-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/4404-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4404-8-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4404-9-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/4404-1-0x0000000000750000-0x0000000000850000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads