tofsee | 7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7

General

Target

7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe
Size

10.8MB
MD5

4b4802c89976506b504b279dd3d58c89
SHA1

2652b1943e3580254b59617b8d6a1cae361d3bd1
SHA256

7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7
SHA512

0d5d41af269d083d8fb532a9bed8bb16a0d4d113c4faf7520fea1237b5cea6cddbda4a1f484450a96e11b0ad8c5290a7a15c03326df335335f95a6ff4723554e

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

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

xgafxwrn.exe

pid process

4072 xgafxwrn.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

3092 netsh.exe

pid	process
4072	xgafxwrn.exe

pid	process
3092	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

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

7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

xgafxwrn.exe

description pid process target process

PID 4072 set thread context of 5076 4072 xgafxwrn.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

4244 sc.exe
4876 sc.exe
2336 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 4072 set thread context of 5076	4072	xgafxwrn.exe	svchost.exe

pid	process
4244	sc.exe
4876	sc.exe
2336	sc.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid	pid_target	process	target process
1692	4176	WerFault.exe	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe
2292	4072	WerFault.exe	xgafxwrn.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exexgafxwrn.exe

description	pid	process	target process
PID 4176 wrote to memory of 4256	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	cmd.exe
PID 4176 wrote to memory of 4256	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	cmd.exe
PID 4176 wrote to memory of 4256	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	cmd.exe
PID 4176 wrote to memory of 3320	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	cmd.exe
PID 4176 wrote to memory of 3320	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	cmd.exe
PID 4176 wrote to memory of 3320	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	cmd.exe
PID 4176 wrote to memory of 4244	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 4176 wrote to memory of 4244	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 4176 wrote to memory of 4244	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 4176 wrote to memory of 4876	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 4176 wrote to memory of 4876	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 4176 wrote to memory of 4876	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 4176 wrote to memory of 2336	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 4176 wrote to memory of 2336	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 4176 wrote to memory of 2336	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	sc.exe
PID 4176 wrote to memory of 3092	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	netsh.exe
PID 4176 wrote to memory of 3092	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	netsh.exe
PID 4176 wrote to memory of 3092	4176	7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe	netsh.exe
PID 4072 wrote to memory of 5076	4072	xgafxwrn.exe	svchost.exe
PID 4072 wrote to memory of 5076	4072	xgafxwrn.exe	svchost.exe
PID 4072 wrote to memory of 5076	4072	xgafxwrn.exe	svchost.exe
PID 4072 wrote to memory of 5076	4072	xgafxwrn.exe	svchost.exe
PID 4072 wrote to memory of 5076	4072	xgafxwrn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe
"C:\Users\Admin\AppData\Local\Temp\7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4176
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ykaipqdt\
  2⤵
  PID:4256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xgafxwrn.exe" C:\Windows\SysWOW64\ykaipqdt\
  2⤵
  PID:3320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ykaipqdt binPath= "C:\Windows\SysWOW64\ykaipqdt\xgafxwrn.exe /d\"C:\Users\Admin\AppData\Local\Temp\7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4244
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ykaipqdt "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4876
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ykaipqdt
  2⤵
  - Launches sc.exe
  PID:2336
- 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:3092
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4176 -s 664
  2⤵
  - Program crash
  PID:1692

C:\Windows\SysWOW64\ykaipqdt\xgafxwrn.exe
C:\Windows\SysWOW64\ykaipqdt\xgafxwrn.exe /d"C:\Users\Admin\AppData\Local\Temp\7ddd22e8dd26436cade10fc9488b0239f2db65589eb486ed551e30569ea5bdc7.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4072
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  PID:5076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4072 -s 508
  2⤵
  - Program crash
  PID:2292

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4176 -ip 4176
1⤵
PID:3120

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 4072 -ip 4072
1⤵
PID:4860

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

New Service

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

New Service

1

T1050

Defense Evasion

Modify Registry

1

T1112

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\xgafxwrn.exe

Filesize
14.4MB

MD5
0f1e96666a8ceaedfd9beb30c5a2bbef

SHA1
696100c3c8604fdf61b7084d1663a898e8e60a06

SHA256
45f72303e914ba90cbe8c071a348ab4a5e982cb2056c8d31b1534c872d5724aa

SHA512
8bc45e1fe0a31794ad8d1058f65cdf3cfe13e867ccb4c000acf98eaf2de60d33fa7f23ca17f5d117ffe96d75801693aa9dd78bac2b04fdcd025cfea4cca7afb0

Download Submit
C:\Windows\SysWOW64\ykaipqdt\xgafxwrn.exe

Filesize
14.4MB

MD5
0f1e96666a8ceaedfd9beb30c5a2bbef

SHA1
696100c3c8604fdf61b7084d1663a898e8e60a06

SHA256
45f72303e914ba90cbe8c071a348ab4a5e982cb2056c8d31b1534c872d5724aa

SHA512
8bc45e1fe0a31794ad8d1058f65cdf3cfe13e867ccb4c000acf98eaf2de60d33fa7f23ca17f5d117ffe96d75801693aa9dd78bac2b04fdcd025cfea4cca7afb0

Download Submit
memory/2336-139-0x0000000000000000-mapping.dmp

Download
memory/3092-141-0x0000000000000000-mapping.dmp

Download
memory/3320-135-0x0000000000000000-mapping.dmp

Download
memory/4072-148-0x0000000000E33000-0x0000000000E41000-memory.dmp

Filesize
56KB

Download
memory/4072-149-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/4176-131-0x0000000000CC0000-0x0000000000DC0000-memory.dmp

Filesize
1024KB

Download
memory/4176-133-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/4176-132-0x0000000002830000-0x0000000002843000-memory.dmp

Filesize
76KB

Download
memory/4176-142-0x0000000002830000-0x0000000002843000-memory.dmp

Filesize
76KB

Download
memory/4176-143-0x0000000000400000-0x0000000000C25000-memory.dmp

Filesize
8.1MB

Download
memory/4244-137-0x0000000000000000-mapping.dmp

Download
memory/4256-134-0x0000000000000000-mapping.dmp

Download
memory/4876-138-0x0000000000000000-mapping.dmp

Download
memory/5076-144-0x0000000000000000-mapping.dmp

Download
memory/5076-145-0x0000000000660000-0x0000000000675000-memory.dmp

Filesize
84KB

Download
memory/5076-150-0x0000000000660000-0x0000000000675000-memory.dmp

Filesize
84KB

Download
memory/5076-151-0x0000000000660000-0x0000000000675000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads