tofsee | f2dcddd55324726c4076627fdb38011cabcadcdfe7431c8fccd5836fbcc46a6c

General

Target

afe8c29b5c2fd78772b1e9493f797afc.exe
Size

12.2MB
MD5

afe8c29b5c2fd78772b1e9493f797afc
SHA1

f2259cb0558077474a3e871450fff4f163890048
SHA256

f2dcddd55324726c4076627fdb38011cabcadcdfe7431c8fccd5836fbcc46a6c
SHA512

cd864beba5e1d32dce31b8f3bf7163ad428063686408ebf6df5db200ee0d6751860df22ed2903bcee266e448e3d9f4fa49d5b85fbba57a8480fabeabdcc41361

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:

ttsyjxeh.exe

pid process

4076 ttsyjxeh.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

4068 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ttsyjxeh.exe

description pid process target process

PID 4076 set thread context of 4068 4076 ttsyjxeh.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
4076	ttsyjxeh.exe

pid	process
4068	svchost.exe

description	pid	process	target process
PID 4076 set thread context of 4068	4076	ttsyjxeh.exe	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

afe8c29b5c2fd78772b1e9493f797afc.exettsyjxeh.exe

description	pid	process	target process
PID 744 wrote to memory of 2060	744	afe8c29b5c2fd78772b1e9493f797afc.exe	cmd.exe
PID 744 wrote to memory of 2060	744	afe8c29b5c2fd78772b1e9493f797afc.exe	cmd.exe
PID 744 wrote to memory of 2060	744	afe8c29b5c2fd78772b1e9493f797afc.exe	cmd.exe
PID 744 wrote to memory of 3736	744	afe8c29b5c2fd78772b1e9493f797afc.exe	cmd.exe
PID 744 wrote to memory of 3736	744	afe8c29b5c2fd78772b1e9493f797afc.exe	cmd.exe
PID 744 wrote to memory of 3736	744	afe8c29b5c2fd78772b1e9493f797afc.exe	cmd.exe
PID 744 wrote to memory of 4036	744	afe8c29b5c2fd78772b1e9493f797afc.exe	sc.exe
PID 744 wrote to memory of 4036	744	afe8c29b5c2fd78772b1e9493f797afc.exe	sc.exe
PID 744 wrote to memory of 4036	744	afe8c29b5c2fd78772b1e9493f797afc.exe	sc.exe
PID 744 wrote to memory of 3164	744	afe8c29b5c2fd78772b1e9493f797afc.exe	sc.exe
PID 744 wrote to memory of 3164	744	afe8c29b5c2fd78772b1e9493f797afc.exe	sc.exe
PID 744 wrote to memory of 3164	744	afe8c29b5c2fd78772b1e9493f797afc.exe	sc.exe
PID 744 wrote to memory of 776	744	afe8c29b5c2fd78772b1e9493f797afc.exe	sc.exe
PID 744 wrote to memory of 776	744	afe8c29b5c2fd78772b1e9493f797afc.exe	sc.exe
PID 744 wrote to memory of 776	744	afe8c29b5c2fd78772b1e9493f797afc.exe	sc.exe
PID 4076 wrote to memory of 4068	4076	ttsyjxeh.exe	svchost.exe
PID 4076 wrote to memory of 4068	4076	ttsyjxeh.exe	svchost.exe
PID 4076 wrote to memory of 4068	4076	ttsyjxeh.exe	svchost.exe
PID 4076 wrote to memory of 4068	4076	ttsyjxeh.exe	svchost.exe
PID 4076 wrote to memory of 4068	4076	ttsyjxeh.exe	svchost.exe
PID 744 wrote to memory of 416	744	afe8c29b5c2fd78772b1e9493f797afc.exe	netsh.exe
PID 744 wrote to memory of 416	744	afe8c29b5c2fd78772b1e9493f797afc.exe	netsh.exe
PID 744 wrote to memory of 416	744	afe8c29b5c2fd78772b1e9493f797afc.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\afe8c29b5c2fd78772b1e9493f797afc.exe
"C:\Users\Admin\AppData\Local\Temp\afe8c29b5c2fd78772b1e9493f797afc.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:744

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zabeaxam\
2⤵
PID:2060

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ttsyjxeh.exe" C:\Windows\SysWOW64\zabeaxam\
2⤵
PID:3736

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create zabeaxam binPath= "C:\Windows\SysWOW64\zabeaxam\ttsyjxeh.exe /d\"C:\Users\Admin\AppData\Local\Temp\afe8c29b5c2fd78772b1e9493f797afc.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:4036

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description zabeaxam "wifi internet conection"
2⤵
PID:3164

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start zabeaxam
2⤵
PID:776

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:416

C:\Windows\SysWOW64\zabeaxam\ttsyjxeh.exe
C:\Windows\SysWOW64\zabeaxam\ttsyjxeh.exe /d"C:\Users\Admin\AppData\Local\Temp\afe8c29b5c2fd78772b1e9493f797afc.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4076

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:4068

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\ttsyjxeh.exe
MD5
2cfdbc901d93722118976ce6775973eb

SHA1
7da388182ca8847287571163acec9ed636f9a16f

SHA256
e3f01a308c3aaafc08308317cdfb6223d77548d10943cee4051cb2c5a24e170e

SHA512
f715efdbff77906f3569a316f1b53a8fa0642d6420bebc85e075bd76f35f2c4c351cfbfeb1ee31f120747c5826bfac602ece2c8b57e1843836efa1c6bc4a9cd3

Download Submit
C:\Windows\SysWOW64\zabeaxam\ttsyjxeh.exe
MD5
2cfdbc901d93722118976ce6775973eb

SHA1
7da388182ca8847287571163acec9ed636f9a16f

SHA256
e3f01a308c3aaafc08308317cdfb6223d77548d10943cee4051cb2c5a24e170e

SHA512
f715efdbff77906f3569a316f1b53a8fa0642d6420bebc85e075bd76f35f2c4c351cfbfeb1ee31f120747c5826bfac602ece2c8b57e1843836efa1c6bc4a9cd3

Download Submit
memory/416-12-0x0000000000000000-mapping.dmp

Download
memory/776-7-0x0000000000000000-mapping.dmp

Download
memory/2060-2-0x0000000000000000-mapping.dmp

Download
memory/3164-6-0x0000000000000000-mapping.dmp

Download
memory/3736-3-0x0000000000000000-mapping.dmp

Download
memory/4036-5-0x0000000000000000-mapping.dmp

Download
memory/4068-9-0x0000000003090000-0x00000000030A5000-memory.dmp

Filesize
84KB

Download
memory/4068-10-0x0000000003099A6B-mapping.dmp

Download

Analysis

Sharing