tofsee | a3eb89c5fe1e820b0ba694c4aeab1351999630b490d988b4dd698753ab8eb7dc

General

Target

JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe
Size

333KB
MD5

f53aeee66a0b0dc9cdf6dd537f48287c
SHA1

e7e29654829306c7c1633190833d1fe8fc0c44b5
SHA256

a3eb89c5fe1e820b0ba694c4aeab1351999630b490d988b4dd698753ab8eb7dc
SHA512

6d7a5f77650886803623ae6c3f7aae73a6a4d641b47cbe4707df91d5ed150b55da4a79be0abcdaa4ad2418037579abf966baf451c56eeb41c1a1183916eba04a
SSDEEP

6144:/Q41aFOBM9gLaaxfOcWB4KsjKTzcbbyXoAsy6mOnbe3q:o44FuX+axfOcWKhjKncb+vsTmql

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
4968	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\ctqydvrt\ImagePath = "C:\\Windows\\SysWOW64\\ctqydvrt\\fbqqvciz.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe

Deletes itself 1 IoCs

pid	Process
4212	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4404	fbqqvciz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4404 set thread context of 4212	4404	fbqqvciz.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
824	sc.exe
1052	sc.exe
1772	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
4392	868	WerFault.exe	81
1528	4404	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	fbqqvciz.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 868 wrote to memory of 4884	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	82
PID 868 wrote to memory of 4884	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	82
PID 868 wrote to memory of 4884	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	82
PID 868 wrote to memory of 3192	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	84
PID 868 wrote to memory of 3192	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	84
PID 868 wrote to memory of 3192	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	84
PID 868 wrote to memory of 824	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	86
PID 868 wrote to memory of 824	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	86
PID 868 wrote to memory of 824	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	86
PID 868 wrote to memory of 1052	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	88
PID 868 wrote to memory of 1052	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	88
PID 868 wrote to memory of 1052	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	88
PID 868 wrote to memory of 1772	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	90
PID 868 wrote to memory of 1772	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	90
PID 868 wrote to memory of 1772	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	90
PID 868 wrote to memory of 4968	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	93
PID 868 wrote to memory of 4968	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	93
PID 868 wrote to memory of 4968	868	JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe	93
PID 4404 wrote to memory of 4212	4404	fbqqvciz.exe	98
PID 4404 wrote to memory of 4212	4404	fbqqvciz.exe	98
PID 4404 wrote to memory of 4212	4404	fbqqvciz.exe	98
PID 4404 wrote to memory of 4212	4404	fbqqvciz.exe	98
PID 4404 wrote to memory of 4212	4404	fbqqvciz.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:868
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ctqydvrt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4884
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fbqqvciz.exe" C:\Windows\SysWOW64\ctqydvrt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3192
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ctqydvrt binPath= "C:\Windows\SysWOW64\ctqydvrt\fbqqvciz.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ctqydvrt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ctqydvrt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1772
- 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:4968
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 868 -s 1208
  2⤵
  - Program crash
  PID:4392

C:\Windows\SysWOW64\ctqydvrt\fbqqvciz.exe
C:\Windows\SysWOW64\ctqydvrt\fbqqvciz.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f53aeee66a0b0dc9cdf6dd537f48287c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4404
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4404 -s 516
  2⤵
  - Program crash
  PID:1528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 868 -ip 868
1⤵
PID:3536

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4404 -ip 4404
1⤵
PID:2700

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\fbqqvciz.exe

Filesize
10.2MB

MD5
1d68bc4bb2221a0d719fd11c6b5e685b

SHA1
ce8f89df0659a2a539192da807ff6aa73589d256

SHA256
3892d926142f950edee865dd6b23005b2c1d686a2a2d5983a44cd8028a3423bd

SHA512
8e4e403796389f3cc91929d1c4533dded07c55339b2bc20d55295d0f59c2061b323cde998b0a30b4f1087642655ce8adf1787b98e9759cdecd9d28cdfd0bf542

Download Submit
memory/868-1-0x00000000007C0000-0x00000000008C0000-memory.dmp

Filesize
1024KB

Download
memory/868-2-0x00000000007A0000-0x00000000007B3000-memory.dmp

Filesize
76KB

Download
memory/868-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/868-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/868-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/868-9-0x00000000007A0000-0x00000000007B3000-memory.dmp

Filesize
76KB

Download
memory/4212-12-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/4212-14-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/4212-15-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/4404-11-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4404-16-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads