tofsee | 3d8efe324e234ca7b31ec46dae3e9fe5c98da16bfcf5cd0b43585ef2b00de606

General

Target

4ac2eac8e4dac3288be47509a33c4a67.exe
Size

10.4MB
MD5

4ac2eac8e4dac3288be47509a33c4a67
SHA1

b1fa98d1320a6c2d5ccc799dad147b4272f9825a
SHA256

3d8efe324e234ca7b31ec46dae3e9fe5c98da16bfcf5cd0b43585ef2b00de606
SHA512

5540a97eea6b3ea877623d1358761cd8b1a2467a9c559bd3aed4fd503db4281699acbd7e31c13da31c11ec48b335873513686b3bb41d38572218bc87a65c6790

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

lkulfdse.exe

pid process

1208 lkulfdse.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112
Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

472 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

lkulfdse.exe

description pid process target process

PID 1208 set thread context of 472 1208 lkulfdse.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
1208	lkulfdse.exe

pid	process
472	svchost.exe

description	pid	process	target process
PID 1208 set thread context of 472	1208	lkulfdse.exe	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

4ac2eac8e4dac3288be47509a33c4a67.exelkulfdse.exe

description	pid	process	target process
PID 932 wrote to memory of 2032	932	4ac2eac8e4dac3288be47509a33c4a67.exe	cmd.exe
PID 932 wrote to memory of 2032	932	4ac2eac8e4dac3288be47509a33c4a67.exe	cmd.exe
PID 932 wrote to memory of 2032	932	4ac2eac8e4dac3288be47509a33c4a67.exe	cmd.exe
PID 932 wrote to memory of 2032	932	4ac2eac8e4dac3288be47509a33c4a67.exe	cmd.exe
PID 932 wrote to memory of 1740	932	4ac2eac8e4dac3288be47509a33c4a67.exe	cmd.exe
PID 932 wrote to memory of 1740	932	4ac2eac8e4dac3288be47509a33c4a67.exe	cmd.exe
PID 932 wrote to memory of 1740	932	4ac2eac8e4dac3288be47509a33c4a67.exe	cmd.exe
PID 932 wrote to memory of 1740	932	4ac2eac8e4dac3288be47509a33c4a67.exe	cmd.exe
PID 932 wrote to memory of 1484	932	4ac2eac8e4dac3288be47509a33c4a67.exe	sc.exe
PID 932 wrote to memory of 1484	932	4ac2eac8e4dac3288be47509a33c4a67.exe	sc.exe
PID 932 wrote to memory of 1484	932	4ac2eac8e4dac3288be47509a33c4a67.exe	sc.exe
PID 932 wrote to memory of 1484	932	4ac2eac8e4dac3288be47509a33c4a67.exe	sc.exe
PID 932 wrote to memory of 1292	932	4ac2eac8e4dac3288be47509a33c4a67.exe	sc.exe
PID 932 wrote to memory of 1292	932	4ac2eac8e4dac3288be47509a33c4a67.exe	sc.exe
PID 932 wrote to memory of 1292	932	4ac2eac8e4dac3288be47509a33c4a67.exe	sc.exe
PID 932 wrote to memory of 1292	932	4ac2eac8e4dac3288be47509a33c4a67.exe	sc.exe
PID 932 wrote to memory of 1336	932	4ac2eac8e4dac3288be47509a33c4a67.exe	sc.exe
PID 932 wrote to memory of 1336	932	4ac2eac8e4dac3288be47509a33c4a67.exe	sc.exe
PID 932 wrote to memory of 1336	932	4ac2eac8e4dac3288be47509a33c4a67.exe	sc.exe
PID 932 wrote to memory of 1336	932	4ac2eac8e4dac3288be47509a33c4a67.exe	sc.exe
PID 932 wrote to memory of 776	932	4ac2eac8e4dac3288be47509a33c4a67.exe	netsh.exe
PID 932 wrote to memory of 776	932	4ac2eac8e4dac3288be47509a33c4a67.exe	netsh.exe
PID 932 wrote to memory of 776	932	4ac2eac8e4dac3288be47509a33c4a67.exe	netsh.exe
PID 932 wrote to memory of 776	932	4ac2eac8e4dac3288be47509a33c4a67.exe	netsh.exe
PID 1208 wrote to memory of 472	1208	lkulfdse.exe	svchost.exe
PID 1208 wrote to memory of 472	1208	lkulfdse.exe	svchost.exe
PID 1208 wrote to memory of 472	1208	lkulfdse.exe	svchost.exe
PID 1208 wrote to memory of 472	1208	lkulfdse.exe	svchost.exe
PID 1208 wrote to memory of 472	1208	lkulfdse.exe	svchost.exe
PID 1208 wrote to memory of 472	1208	lkulfdse.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\4ac2eac8e4dac3288be47509a33c4a67.exe
"C:\Users\Admin\AppData\Local\Temp\4ac2eac8e4dac3288be47509a33c4a67.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:932

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kppdytdz\
2⤵
PID:2032

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lkulfdse.exe" C:\Windows\SysWOW64\kppdytdz\
2⤵
PID:1740

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create kppdytdz binPath= "C:\Windows\SysWOW64\kppdytdz\lkulfdse.exe /d\"C:\Users\Admin\AppData\Local\Temp\4ac2eac8e4dac3288be47509a33c4a67.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:1484

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description kppdytdz "wifi internet conection"
2⤵
PID:1292

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start kppdytdz
2⤵
PID:1336

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⤵
PID:776

C:\Windows\SysWOW64\kppdytdz\lkulfdse.exe
C:\Windows\SysWOW64\kppdytdz\lkulfdse.exe /d"C:\Users\Admin\AppData\Local\Temp\4ac2eac8e4dac3288be47509a33c4a67.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1208

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:472

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1

T1050

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

New Service

1

T1050

Defense Evasion

Disabling Security Tools

1

T1089

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\lkulfdse.exe
MD5
8f6a11b086afe1f5fbe2c0cb6b72df62

SHA1
2c92b5871fe6a4a255706daa4d6549c600912dda

SHA256
2e8b150701d4a75d860734c210675a76a99a2405970cb6f98c6c84ba6b0fe07d

SHA512
4a6a6f0c917bc008657ea3ae7c8c7e8e223efe12ca8649173dc5e50db206be98dcc3908171ca8b52c6b32aa455e4bc21be24da94d533eb7674752df1255f5ea3

Download Submit
C:\Windows\SysWOW64\kppdytdz\lkulfdse.exe
MD5
8f6a11b086afe1f5fbe2c0cb6b72df62

SHA1
2c92b5871fe6a4a255706daa4d6549c600912dda

SHA256
2e8b150701d4a75d860734c210675a76a99a2405970cb6f98c6c84ba6b0fe07d

SHA512
4a6a6f0c917bc008657ea3ae7c8c7e8e223efe12ca8649173dc5e50db206be98dcc3908171ca8b52c6b32aa455e4bc21be24da94d533eb7674752df1255f5ea3

Download Submit
memory/472-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/472-11-0x0000000000089A6B-mapping.dmp

Download
memory/472-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/776-8-0x0000000000000000-mapping.dmp

Download
memory/1292-6-0x0000000000000000-mapping.dmp

Download
memory/1336-7-0x0000000000000000-mapping.dmp

Download
memory/1484-5-0x0000000000000000-mapping.dmp

Download
memory/1740-3-0x0000000000000000-mapping.dmp

Download
memory/2032-2-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing