tofsee | 2a0a1e4045873d15044e2725e2f65c0a7fbd6dade9a2b2ec65a84cb6a87977ae

General

Target

9274f09e455169d55a5c965f5bd74c5e.exe
Size

14.4MB
MD5

9274f09e455169d55a5c965f5bd74c5e
SHA1

09ade51af159576ed06a5de8b087fc151943c955
SHA256

2a0a1e4045873d15044e2725e2f65c0a7fbd6dade9a2b2ec65a84cb6a87977ae
SHA512

5fb259bef76cb4545757c701c7fc0f663440ecf63eee47b45e35e46a5fbf6f1a21b950ddacce156cf41a3f22cbe92e3eb45a1b74ac54a4707d9b4d009c3de5be

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:

tseafpzm.exe

pid process

3936 tseafpzm.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

1584 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

tseafpzm.exe

description pid process target process

PID 3936 set thread context of 1584 3936 tseafpzm.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
3936	tseafpzm.exe

pid	process
1584	svchost.exe

description	pid	process	target process
PID 3936 set thread context of 1584	3936	tseafpzm.exe	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

9274f09e455169d55a5c965f5bd74c5e.exetseafpzm.exe

description	pid	process	target process
PID 1232 wrote to memory of 1656	1232	9274f09e455169d55a5c965f5bd74c5e.exe	cmd.exe
PID 1232 wrote to memory of 1656	1232	9274f09e455169d55a5c965f5bd74c5e.exe	cmd.exe
PID 1232 wrote to memory of 1656	1232	9274f09e455169d55a5c965f5bd74c5e.exe	cmd.exe
PID 1232 wrote to memory of 2632	1232	9274f09e455169d55a5c965f5bd74c5e.exe	cmd.exe
PID 1232 wrote to memory of 2632	1232	9274f09e455169d55a5c965f5bd74c5e.exe	cmd.exe
PID 1232 wrote to memory of 2632	1232	9274f09e455169d55a5c965f5bd74c5e.exe	cmd.exe
PID 1232 wrote to memory of 644	1232	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1232 wrote to memory of 644	1232	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1232 wrote to memory of 644	1232	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1232 wrote to memory of 196	1232	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1232 wrote to memory of 196	1232	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1232 wrote to memory of 196	1232	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1232 wrote to memory of 2472	1232	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1232 wrote to memory of 2472	1232	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 1232 wrote to memory of 2472	1232	9274f09e455169d55a5c965f5bd74c5e.exe	sc.exe
PID 3936 wrote to memory of 1584	3936	tseafpzm.exe	svchost.exe
PID 3936 wrote to memory of 1584	3936	tseafpzm.exe	svchost.exe
PID 3936 wrote to memory of 1584	3936	tseafpzm.exe	svchost.exe
PID 1232 wrote to memory of 1056	1232	9274f09e455169d55a5c965f5bd74c5e.exe	netsh.exe
PID 1232 wrote to memory of 1056	1232	9274f09e455169d55a5c965f5bd74c5e.exe	netsh.exe
PID 1232 wrote to memory of 1056	1232	9274f09e455169d55a5c965f5bd74c5e.exe	netsh.exe
PID 3936 wrote to memory of 1584	3936	tseafpzm.exe	svchost.exe
PID 3936 wrote to memory of 1584	3936	tseafpzm.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\9274f09e455169d55a5c965f5bd74c5e.exe
"C:\Users\Admin\AppData\Local\Temp\9274f09e455169d55a5c965f5bd74c5e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1232

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hmbzldje\
2⤵
PID:1656

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tseafpzm.exe" C:\Windows\SysWOW64\hmbzldje\
2⤵
PID:2632

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create hmbzldje binPath= "C:\Windows\SysWOW64\hmbzldje\tseafpzm.exe /d\"C:\Users\Admin\AppData\Local\Temp\9274f09e455169d55a5c965f5bd74c5e.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:644

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description hmbzldje "wifi internet conection"
2⤵
PID:196

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start hmbzldje
2⤵
PID:2472

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:1056

C:\Windows\SysWOW64\hmbzldje\tseafpzm.exe
C:\Windows\SysWOW64\hmbzldje\tseafpzm.exe /d"C:\Users\Admin\AppData\Local\Temp\9274f09e455169d55a5c965f5bd74c5e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3936

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:1584

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\tseafpzm.exe
MD5
7643efa202938161cc508bd0201d34e6

SHA1
ad8367ca12f6dc7c09262c65af7e3ac670bbe12f

SHA256
e48493ec962843e32516785f1b478a018b4bbc1d58d50f5285b8fbebf602adee

SHA512
7addaf46ab7e9d4dd38b090c006f1ff8ec681f53f651e17b481b94805728e1ac10e267fb8e99c8d254f2795bd44679ce7e8607ee87351d7b0bd7026a45a4ddbb

Download Submit
C:\Windows\SysWOW64\hmbzldje\tseafpzm.exe
MD5
7643efa202938161cc508bd0201d34e6

SHA1
ad8367ca12f6dc7c09262c65af7e3ac670bbe12f

SHA256
e48493ec962843e32516785f1b478a018b4bbc1d58d50f5285b8fbebf602adee

SHA512
7addaf46ab7e9d4dd38b090c006f1ff8ec681f53f651e17b481b94805728e1ac10e267fb8e99c8d254f2795bd44679ce7e8607ee87351d7b0bd7026a45a4ddbb

Download Submit
memory/196-6-0x0000000000000000-mapping.dmp

Download
memory/644-5-0x0000000000000000-mapping.dmp

Download
memory/1056-9-0x0000000000000000-mapping.dmp

Download
memory/1584-10-0x0000000000180000-0x0000000000195000-memory.dmp

Filesize
84KB

Download
memory/1584-11-0x0000000000189A6B-mapping.dmp

Download
memory/1656-2-0x0000000000000000-mapping.dmp

Download
memory/2472-7-0x0000000000000000-mapping.dmp

Download
memory/2632-3-0x0000000000000000-mapping.dmp

Download

Analysis

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