tofsee | 60bcd69140ed6a79b7baa6a0005bfbef07a13f6918db29f4e6b1e6f5290d6db3

General

Target

733547b3964e5000616fa0fa71f31e8e.exe
Size

12.6MB
MD5

733547b3964e5000616fa0fa71f31e8e
SHA1

3e4691a61f811d8cc8c10b7a6e64c41d1f645c86
SHA256

60bcd69140ed6a79b7baa6a0005bfbef07a13f6918db29f4e6b1e6f5290d6db3
SHA512

0df59d78a4222f4e0e693668a33e4c28af17991ee119f58892524be5494f29830f81361b7ca4f1570909530d80089a8c08a6eb73e7455c0ccd32d2e700fcda7f

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:

tryutcar.exe

pid process

4020 tryutcar.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

2128 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

tryutcar.exe

description pid process target process

PID 4020 set thread context of 2128 4020 tryutcar.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
4020	tryutcar.exe

pid	process
2128	svchost.exe

description	pid	process	target process
PID 4020 set thread context of 2128	4020	tryutcar.exe	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

733547b3964e5000616fa0fa71f31e8e.exetryutcar.exe

description	pid	process	target process
PID 4056 wrote to memory of 1844	4056	733547b3964e5000616fa0fa71f31e8e.exe	cmd.exe
PID 4056 wrote to memory of 1844	4056	733547b3964e5000616fa0fa71f31e8e.exe	cmd.exe
PID 4056 wrote to memory of 1844	4056	733547b3964e5000616fa0fa71f31e8e.exe	cmd.exe
PID 4056 wrote to memory of 2064	4056	733547b3964e5000616fa0fa71f31e8e.exe	cmd.exe
PID 4056 wrote to memory of 2064	4056	733547b3964e5000616fa0fa71f31e8e.exe	cmd.exe
PID 4056 wrote to memory of 2064	4056	733547b3964e5000616fa0fa71f31e8e.exe	cmd.exe
PID 4056 wrote to memory of 3488	4056	733547b3964e5000616fa0fa71f31e8e.exe	sc.exe
PID 4056 wrote to memory of 3488	4056	733547b3964e5000616fa0fa71f31e8e.exe	sc.exe
PID 4056 wrote to memory of 3488	4056	733547b3964e5000616fa0fa71f31e8e.exe	sc.exe
PID 4056 wrote to memory of 1892	4056	733547b3964e5000616fa0fa71f31e8e.exe	sc.exe
PID 4056 wrote to memory of 1892	4056	733547b3964e5000616fa0fa71f31e8e.exe	sc.exe
PID 4056 wrote to memory of 1892	4056	733547b3964e5000616fa0fa71f31e8e.exe	sc.exe
PID 4056 wrote to memory of 1352	4056	733547b3964e5000616fa0fa71f31e8e.exe	sc.exe
PID 4056 wrote to memory of 1352	4056	733547b3964e5000616fa0fa71f31e8e.exe	sc.exe
PID 4056 wrote to memory of 1352	4056	733547b3964e5000616fa0fa71f31e8e.exe	sc.exe
PID 4020 wrote to memory of 2128	4020	tryutcar.exe	svchost.exe
PID 4020 wrote to memory of 2128	4020	tryutcar.exe	svchost.exe
PID 4020 wrote to memory of 2128	4020	tryutcar.exe	svchost.exe
PID 4020 wrote to memory of 2128	4020	tryutcar.exe	svchost.exe
PID 4020 wrote to memory of 2128	4020	tryutcar.exe	svchost.exe
PID 4056 wrote to memory of 1184	4056	733547b3964e5000616fa0fa71f31e8e.exe	netsh.exe
PID 4056 wrote to memory of 1184	4056	733547b3964e5000616fa0fa71f31e8e.exe	netsh.exe
PID 4056 wrote to memory of 1184	4056	733547b3964e5000616fa0fa71f31e8e.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\733547b3964e5000616fa0fa71f31e8e.exe
"C:\Users\Admin\AppData\Local\Temp\733547b3964e5000616fa0fa71f31e8e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4056

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vfbthpkl\
2⤵
PID:1844

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tryutcar.exe" C:\Windows\SysWOW64\vfbthpkl\
2⤵
PID:2064

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create vfbthpkl binPath= "C:\Windows\SysWOW64\vfbthpkl\tryutcar.exe /d\"C:\Users\Admin\AppData\Local\Temp\733547b3964e5000616fa0fa71f31e8e.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:3488

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description vfbthpkl "wifi internet conection"
2⤵
PID:1892

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start vfbthpkl
2⤵
PID:1352

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:1184

C:\Windows\SysWOW64\vfbthpkl\tryutcar.exe
C:\Windows\SysWOW64\vfbthpkl\tryutcar.exe /d"C:\Users\Admin\AppData\Local\Temp\733547b3964e5000616fa0fa71f31e8e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4020

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:2128

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tryutcar.exe
MD5
7d542b4a7dbf3dfbe9bb7471ef25a080

SHA1
1cadfee09ec88d96fe2a9e9c6dc74e616bfb1666

SHA256
7372ff9d6d9498d16092a97b01000c38d4de6c99aa89bab7f8cacc9600716e18

SHA512
28ca54735939cdcd93c1a9f1b1cbc63849b532e00fbc4612949bbf9be70b331bf3ecd8d4ec294d20615e06dc05fb3a596113f33f24bc03fe8e622ac9a997fd24

Download Submit
C:\Windows\SysWOW64\vfbthpkl\tryutcar.exe
MD5
7d542b4a7dbf3dfbe9bb7471ef25a080

SHA1
1cadfee09ec88d96fe2a9e9c6dc74e616bfb1666

SHA256
7372ff9d6d9498d16092a97b01000c38d4de6c99aa89bab7f8cacc9600716e18

SHA512
28ca54735939cdcd93c1a9f1b1cbc63849b532e00fbc4612949bbf9be70b331bf3ecd8d4ec294d20615e06dc05fb3a596113f33f24bc03fe8e622ac9a997fd24

Download Submit
memory/1184-12-0x0000000000000000-mapping.dmp

Download
memory/1352-7-0x0000000000000000-mapping.dmp

Download
memory/1844-2-0x0000000000000000-mapping.dmp

Download
memory/1892-6-0x0000000000000000-mapping.dmp

Download
memory/2064-3-0x0000000000000000-mapping.dmp

Download
memory/2128-9-0x0000000003080000-0x0000000003095000-memory.dmp

Filesize
84KB

Download
memory/2128-10-0x0000000003089A6B-mapping.dmp

Download
memory/3488-5-0x0000000000000000-mapping.dmp

Download

Analysis

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