tofsee | 5b8739273220f928323bdca4745bb21b820fd91a694f678cc78375041f92d97b

General

Target

ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe
Size

11.6MB
MD5

ffdf89de900c716587f62b698c402aeb
SHA1

fbc84bab04ffbb6200eab40cb7cc975138de52b5
SHA256

5b8739273220f928323bdca4745bb21b820fd91a694f678cc78375041f92d97b
SHA512

9d3b7d383672a3dea0afe7907f53ac558590f0079148d3f181225e68c3df632a1ccf966e2188dff010674cad2a39b4b0abe9f252034369c416b51105d1758111
SSDEEP

49152:Eitpppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp5:Ei

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

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

1252 netsh.exe

pid	process
1252	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\ppiobhkh\ImagePath = "C:\\Windows\\SysWOW64\\ppiobhkh\\gvzdtgxx.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:

ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2060 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

gvzdtgxx.exe

pid process

3920 gvzdtgxx.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

gvzdtgxx.exe

description pid process target process

PID 3920 set thread context of 2060 3920 gvzdtgxx.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

2884 sc.exe
3204 sc.exe
2324 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

1640 5100 WerFault.exe ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe
3068 3920 WerFault.exe gvzdtgxx.exe

pid	process
2060	svchost.exe

pid	process
3920	gvzdtgxx.exe

description	pid	process	target process
PID 3920 set thread context of 2060	3920	gvzdtgxx.exe	svchost.exe

pid	process
2884	sc.exe
3204	sc.exe
2324	sc.exe

pid	pid_target	process	target process
1640	5100	WerFault.exe	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe
3068	3920	WerFault.exe	gvzdtgxx.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exegvzdtgxx.exe

description	pid	process	target process
PID 5100 wrote to memory of 3592	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	cmd.exe
PID 5100 wrote to memory of 3592	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	cmd.exe
PID 5100 wrote to memory of 3592	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	cmd.exe
PID 5100 wrote to memory of 520	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	cmd.exe
PID 5100 wrote to memory of 520	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	cmd.exe
PID 5100 wrote to memory of 520	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	cmd.exe
PID 5100 wrote to memory of 2884	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	sc.exe
PID 5100 wrote to memory of 2884	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	sc.exe
PID 5100 wrote to memory of 2884	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	sc.exe
PID 5100 wrote to memory of 3204	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	sc.exe
PID 5100 wrote to memory of 3204	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	sc.exe
PID 5100 wrote to memory of 3204	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	sc.exe
PID 5100 wrote to memory of 2324	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	sc.exe
PID 5100 wrote to memory of 2324	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	sc.exe
PID 5100 wrote to memory of 2324	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	sc.exe
PID 5100 wrote to memory of 1252	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	netsh.exe
PID 5100 wrote to memory of 1252	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	netsh.exe
PID 5100 wrote to memory of 1252	5100	ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe	netsh.exe
PID 3920 wrote to memory of 2060	3920	gvzdtgxx.exe	svchost.exe
PID 3920 wrote to memory of 2060	3920	gvzdtgxx.exe	svchost.exe
PID 3920 wrote to memory of 2060	3920	gvzdtgxx.exe	svchost.exe
PID 3920 wrote to memory of 2060	3920	gvzdtgxx.exe	svchost.exe
PID 3920 wrote to memory of 2060	3920	gvzdtgxx.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5100

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ppiobhkh\
2⤵
PID:3592

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gvzdtgxx.exe" C:\Windows\SysWOW64\ppiobhkh\
2⤵
PID:520

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create ppiobhkh binPath= "C:\Windows\SysWOW64\ppiobhkh\gvzdtgxx.exe /d\"C:\Users\Admin\AppData\Local\Temp\ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2884

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description ppiobhkh "wifi internet conection"
2⤵
- Launches sc.exe
PID:3204

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start ppiobhkh
2⤵
- Launches sc.exe
PID:2324

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:1252

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 5100 -s 1028
2⤵
- Program crash
PID:1640

C:\Windows\SysWOW64\ppiobhkh\gvzdtgxx.exe
C:\Windows\SysWOW64\ppiobhkh\gvzdtgxx.exe /d"C:\Users\Admin\AppData\Local\Temp\ffdf89de900c716587f62b698c402aeb_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3920

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:2060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3920 -s 536
2⤵
- Program crash
PID:3068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 5100 -ip 5100
1⤵
PID:4128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3920 -ip 3920
1⤵
PID:1524

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
13.7MB

MD5
63f600ed7a19dc105ffab151818ba537

SHA1
74b9a71fdf81092ac596808631051ae5751bdd20

SHA256
5ec6d98bcf0cef20fde4a24b8773d90bbe87c223a1f7d819897c062e3b136614

SHA512
a309626aa4e0d1fa0f79afe3c5e6d847a9fa7130f8ed5725c789c715f0a964ba509521106c64a6e4c55e4e6b64a2f371205b38ada9a6530d928019efa0ce416f

Download Submit
memory/2060-15-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/2060-16-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/2060-11-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/2060-17-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/2060-19-0x0000000000590000-0x00000000005A5000-memory.dmp

Filesize
84KB

Download
memory/3920-10-0x0000000000F20000-0x0000000001020000-memory.dmp

Filesize
1024KB

Download
memory/3920-12-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/3920-18-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/5100-4-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/5100-2-0x0000000000C90000-0x0000000000CA3000-memory.dmp

Filesize
76KB

Download
memory/5100-7-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/5100-8-0x0000000000C90000-0x0000000000CA3000-memory.dmp

Filesize
76KB

Download
memory/5100-1-0x0000000000CC0000-0x0000000000DC0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads