tofsee | 49911d61a324bcfb2722acc8f21c54e093fed68c99989b26bd031298bb84f4b7

General

Target

fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe
Size

14.6MB
MD5

fbbc300be6ec59b88fe78c250e98f0f4
SHA1

e59eae7c8050cc027aad2f6801808ec899527cf5
SHA256

49911d61a324bcfb2722acc8f21c54e093fed68c99989b26bd031298bb84f4b7
SHA512

25f9a3f6fe4a1c7b852c8a9adee66c5a762c0021aa73b6d1bcefb9a811efbc558573955877b4c831ca6204fb3235a724a0dcd6234f8bb82db2a04b59edeb6929
SSDEEP

49152:Sj5555555555555555555555555555555555555555555555555555555555555F:

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

1780 netsh.exe

pid	process
1780	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\ejzjqpw\ImagePath = "C:\\Windows\\SysWOW64\\ejzjqpw\\auwtnjty.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

Processes:

fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2596 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

auwtnjty.exe

pid process

3448 auwtnjty.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

auwtnjty.exe

description pid process target process

PID 3448 set thread context of 2596 3448 auwtnjty.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

4440 sc.exe
1120 sc.exe
2772 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2596	svchost.exe

pid	process
3448	auwtnjty.exe

description	pid	process	target process
PID 3448 set thread context of 2596	3448	auwtnjty.exe	svchost.exe

pid	process
4440	sc.exe
1120	sc.exe
2772	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exeauwtnjty.exe

description	pid	process	target process
PID 2956 wrote to memory of 2980	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	cmd.exe
PID 2956 wrote to memory of 2980	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	cmd.exe
PID 2956 wrote to memory of 2980	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	cmd.exe
PID 2956 wrote to memory of 1624	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	cmd.exe
PID 2956 wrote to memory of 1624	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	cmd.exe
PID 2956 wrote to memory of 1624	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	cmd.exe
PID 2956 wrote to memory of 4440	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	sc.exe
PID 2956 wrote to memory of 4440	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	sc.exe
PID 2956 wrote to memory of 4440	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	sc.exe
PID 2956 wrote to memory of 1120	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	sc.exe
PID 2956 wrote to memory of 1120	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	sc.exe
PID 2956 wrote to memory of 1120	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	sc.exe
PID 2956 wrote to memory of 2772	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	sc.exe
PID 2956 wrote to memory of 2772	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	sc.exe
PID 2956 wrote to memory of 2772	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	sc.exe
PID 3448 wrote to memory of 2596	3448	auwtnjty.exe	svchost.exe
PID 3448 wrote to memory of 2596	3448	auwtnjty.exe	svchost.exe
PID 3448 wrote to memory of 2596	3448	auwtnjty.exe	svchost.exe
PID 3448 wrote to memory of 2596	3448	auwtnjty.exe	svchost.exe
PID 3448 wrote to memory of 2596	3448	auwtnjty.exe	svchost.exe
PID 2956 wrote to memory of 1780	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	netsh.exe
PID 2956 wrote to memory of 1780	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	netsh.exe
PID 2956 wrote to memory of 1780	2956	fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2956

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ejzjqpw\
2⤵
PID:2980

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\auwtnjty.exe" C:\Windows\SysWOW64\ejzjqpw\
2⤵
PID:1624

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create ejzjqpw binPath= "C:\Windows\SysWOW64\ejzjqpw\auwtnjty.exe /d\"C:\Users\Admin\AppData\Local\Temp\fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4440

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description ejzjqpw "wifi internet conection"
2⤵
- Launches sc.exe
PID:1120

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start ejzjqpw
2⤵
- Launches sc.exe
PID:2772

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
PID:1780

C:\Windows\SysWOW64\ejzjqpw\auwtnjty.exe
C:\Windows\SysWOW64\ejzjqpw\auwtnjty.exe /d"C:\Users\Admin\AppData\Local\Temp\fbbc300be6ec59b88fe78c250e98f0f4_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3448

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:2596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\auwtnjty.exe

Filesize
10.6MB

MD5
6ec93042f6cf97f22cdad3423c72c699

SHA1
6d23b0a1ec625c7f0fae994ca432052df6a2ac97

SHA256
2bc65231c69571c34e50f048eb8cbc11be13f56da002d4b9528e1f216c6d7695

SHA512
a586156ac7d4f88b1f854f18b1eaa228cabebbab72b3188e172797c0beff7b0a7ecdc9c22028e30c7a7e41c1b54361605aed4ca1822b509f85005e17ce36c1da

Download Submit
memory/2596-10-0x0000000000C20000-0x0000000000C35000-memory.dmp

Filesize
84KB

Download
memory/2596-18-0x0000000000C20000-0x0000000000C35000-memory.dmp

Filesize
84KB

Download
memory/2596-17-0x0000000000C20000-0x0000000000C35000-memory.dmp

Filesize
84KB

Download
memory/2596-16-0x0000000000C20000-0x0000000000C35000-memory.dmp

Filesize
84KB

Download
memory/2596-14-0x0000000000C20000-0x0000000000C35000-memory.dmp

Filesize
84KB

Download
memory/2956-3-0x00000000006D0000-0x00000000006D1000-memory.dmp

Filesize
4KB

Download
memory/2956-15-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2956-0-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2956-1-0x00000000005B0000-0x00000000005B1000-memory.dmp

Filesize
4KB

Download
memory/2956-2-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/3448-9-0x0000000000CE0000-0x0000000000CE1000-memory.dmp

Filesize
4KB

Download
memory/3448-12-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/3448-7-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads