tofsee | dd004c9c9d7d599f8c58d4b23d7f3e11a1c747d9b20569ead3d4927af9314b76

General

Target

JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe
Size

12.7MB
MD5

a7b1979a9d23174072159196b0d7d59e
SHA1

61542cb936f2425ca569b83fece1d067c3964be2
SHA256

dd004c9c9d7d599f8c58d4b23d7f3e11a1c747d9b20569ead3d4927af9314b76
SHA512

0675eeb8f7d14e6cf4b869f08866ec6aaa599c2503ab53e0b1f21790049eabb1a6c64edc5013ff9ad612db09c0173538e36906c8925b774f0c8001ba5f35c3f5
SSDEEP

49152:TP1IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII:

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
4516	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\ahfzfjvt\ImagePath = "C:\\Windows\\SysWOW64\\ahfzfjvt\\joyoch.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_a7b1979a9d23174072159196b0d7d59e.exe

Deletes itself 1 IoCs

pid	Process
3448	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1812	joyoch.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1812 set thread context of 3448	1812	joyoch.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4456	sc.exe
4492	sc.exe
220	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
3220	2452	WerFault.exe	81
4460	1812	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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	joyoch.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2452 wrote to memory of 3844	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	83
PID 2452 wrote to memory of 3844	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	83
PID 2452 wrote to memory of 3844	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	83
PID 2452 wrote to memory of 3672	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	85
PID 2452 wrote to memory of 3672	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	85
PID 2452 wrote to memory of 3672	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	85
PID 2452 wrote to memory of 4456	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	87
PID 2452 wrote to memory of 4456	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	87
PID 2452 wrote to memory of 4456	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	87
PID 2452 wrote to memory of 4492	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	89
PID 2452 wrote to memory of 4492	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	89
PID 2452 wrote to memory of 4492	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	89
PID 2452 wrote to memory of 220	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	91
PID 2452 wrote to memory of 220	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	91
PID 2452 wrote to memory of 220	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	91
PID 2452 wrote to memory of 4516	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	94
PID 2452 wrote to memory of 4516	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	94
PID 2452 wrote to memory of 4516	2452	JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe	94
PID 1812 wrote to memory of 3448	1812	joyoch.exe	100
PID 1812 wrote to memory of 3448	1812	joyoch.exe	100
PID 1812 wrote to memory of 3448	1812	joyoch.exe	100
PID 1812 wrote to memory of 3448	1812	joyoch.exe	100
PID 1812 wrote to memory of 3448	1812	joyoch.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2452
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ahfzfjvt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3844
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\joyoch.exe" C:\Windows\SysWOW64\ahfzfjvt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ahfzfjvt binPath= "C:\Windows\SysWOW64\ahfzfjvt\joyoch.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4456
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ahfzfjvt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4492
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ahfzfjvt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:220
- 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:4516
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2452 -s 1044
  2⤵
  - Program crash
  PID:3220

C:\Windows\SysWOW64\ahfzfjvt\joyoch.exe
C:\Windows\SysWOW64\ahfzfjvt\joyoch.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a7b1979a9d23174072159196b0d7d59e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3448
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1812 -s 516
  2⤵
  - Program crash
  PID:4460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2452 -ip 2452
1⤵
PID:4052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1812 -ip 1812
1⤵
PID:1044

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\joyoch.exe

Filesize
13.9MB

MD5
837b68b7b210b0009b31c4fd4e71e2eb

SHA1
f68d5c3e0170aa48ab89a52cc1e6ae1f2aa0b139

SHA256
8ecd2bdc6981f5638b8d296bb92bfc5bb4c9a8fd9406179fffe0aaab67f67cfb

SHA512
6244b98a1add2cb1441e9acd23faa0080d254ea805741450d92bd34e80d72ea1fbca6d353bf99486e4a2577ca54717be5634980c00ee8bfd272d9e0cbcd50db7

Download Submit
memory/1812-11-0x0000000000400000-0x000000000076F000-memory.dmp

Filesize
3.4MB

Download
memory/1812-17-0x0000000000400000-0x000000000076F000-memory.dmp

Filesize
3.4MB

Download
memory/2452-1-0x0000000000980000-0x0000000000A80000-memory.dmp

Filesize
1024KB

Download
memory/2452-2-0x0000000000910000-0x0000000000923000-memory.dmp

Filesize
76KB

Download
memory/2452-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2452-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2452-9-0x0000000000910000-0x0000000000923000-memory.dmp

Filesize
76KB

Download
memory/2452-8-0x0000000000400000-0x000000000076F000-memory.dmp

Filesize
3.4MB

Download
memory/3448-12-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

Filesize
84KB

Download
memory/3448-14-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

Filesize
84KB

Download
memory/3448-15-0x0000000000AA0000-0x0000000000AB5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads