tofsee | 9b70b8bd04c8ab2d25ebf024b23cbf44f541c6a835d0b0b4cd35e71c284baa14

General

Target

0e7bc915182d2c168803acfaffb7fe9c.exe
Size

11.2MB
MD5

0e7bc915182d2c168803acfaffb7fe9c
SHA1

8a761cc25f05a8b61d8f509b5c34871466420e48
SHA256

9b70b8bd04c8ab2d25ebf024b23cbf44f541c6a835d0b0b4cd35e71c284baa14
SHA512

3b57cb0a86183bf91096844a3bbea5d4a1d1c8875c75776cb6f0b2ebfbd8579cfa7570d28c91d5a4bb24314607ab1f6e2c3a461aa0aaedc5190df28745d115c1

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:

ivhexkpz.exe

pid process

1772 ivhexkpz.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

660 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ivhexkpz.exe

description pid process target process

PID 1772 set thread context of 660 1772 ivhexkpz.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
1772	ivhexkpz.exe

pid	process
660	svchost.exe

description	pid	process	target process
PID 1772 set thread context of 660	1772	ivhexkpz.exe	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

0e7bc915182d2c168803acfaffb7fe9c.exeivhexkpz.exe

description	pid	process	target process
PID 1320 wrote to memory of 1232	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	cmd.exe
PID 1320 wrote to memory of 1232	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	cmd.exe
PID 1320 wrote to memory of 1232	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	cmd.exe
PID 1320 wrote to memory of 1232	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	cmd.exe
PID 1320 wrote to memory of 1324	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	cmd.exe
PID 1320 wrote to memory of 1324	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	cmd.exe
PID 1320 wrote to memory of 1324	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	cmd.exe
PID 1320 wrote to memory of 1324	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	cmd.exe
PID 1320 wrote to memory of 1952	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 1320 wrote to memory of 1952	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 1320 wrote to memory of 1952	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 1320 wrote to memory of 1952	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 1320 wrote to memory of 1424	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 1320 wrote to memory of 1424	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 1320 wrote to memory of 1424	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 1320 wrote to memory of 1424	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 1320 wrote to memory of 572	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 1320 wrote to memory of 572	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 1320 wrote to memory of 572	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 1320 wrote to memory of 572	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	sc.exe
PID 1320 wrote to memory of 1620	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	netsh.exe
PID 1320 wrote to memory of 1620	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	netsh.exe
PID 1320 wrote to memory of 1620	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	netsh.exe
PID 1320 wrote to memory of 1620	1320	0e7bc915182d2c168803acfaffb7fe9c.exe	netsh.exe
PID 1772 wrote to memory of 660	1772	ivhexkpz.exe	svchost.exe
PID 1772 wrote to memory of 660	1772	ivhexkpz.exe	svchost.exe
PID 1772 wrote to memory of 660	1772	ivhexkpz.exe	svchost.exe
PID 1772 wrote to memory of 660	1772	ivhexkpz.exe	svchost.exe
PID 1772 wrote to memory of 660	1772	ivhexkpz.exe	svchost.exe
PID 1772 wrote to memory of 660	1772	ivhexkpz.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\0e7bc915182d2c168803acfaffb7fe9c.exe
"C:\Users\Admin\AppData\Local\Temp\0e7bc915182d2c168803acfaffb7fe9c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1320

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kktwagga\
2⤵
PID:1232

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ivhexkpz.exe" C:\Windows\SysWOW64\kktwagga\
2⤵
PID:1324

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create kktwagga binPath= "C:\Windows\SysWOW64\kktwagga\ivhexkpz.exe /d\"C:\Users\Admin\AppData\Local\Temp\0e7bc915182d2c168803acfaffb7fe9c.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:1952

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description kktwagga "wifi internet conection"
2⤵
PID:1424

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start kktwagga
2⤵
PID:572

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:1620

C:\Windows\SysWOW64\kktwagga\ivhexkpz.exe
C:\Windows\SysWOW64\kktwagga\ivhexkpz.exe /d"C:\Users\Admin\AppData\Local\Temp\0e7bc915182d2c168803acfaffb7fe9c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1772

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:660

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\ivhexkpz.exe
MD5
56accc3ee5342115c745b84c9fa7fde2

SHA1
64c4b3bed4361b372282d0cd6fd801dcb8964abb

SHA256
252c6f24529be1a178dadd156f538d9cef0a2138253cf9cb909602a96f29dafb

SHA512
374860b915153c36bffbe1fea799b4cc7a4f4785cff3055a8eb3f9d972d7ca1137c8cacdc9f1331a124a8326d807e5d854871c4aa38e0c86ba799034c24a4b0b

Download Submit
C:\Windows\SysWOW64\kktwagga\ivhexkpz.exe
MD5
56accc3ee5342115c745b84c9fa7fde2

SHA1
64c4b3bed4361b372282d0cd6fd801dcb8964abb

SHA256
252c6f24529be1a178dadd156f538d9cef0a2138253cf9cb909602a96f29dafb

SHA512
374860b915153c36bffbe1fea799b4cc7a4f4785cff3055a8eb3f9d972d7ca1137c8cacdc9f1331a124a8326d807e5d854871c4aa38e0c86ba799034c24a4b0b

Download Submit
memory/572-15-0x0000000000000000-mapping.dmp

Download
memory/660-23-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/660-24-0x0000000000089A6B-mapping.dmp

Download
memory/660-25-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1232-4-0x0000000000000000-mapping.dmp

Download
memory/1320-3-0x0000000006160000-0x0000000006171000-memory.dmp

Filesize
68KB

Download
memory/1320-2-0x00000000047DB000-0x00000000047DC000-memory.dmp

Filesize
4KB

Download
memory/1324-5-0x0000000000000000-mapping.dmp

Download
memory/1424-12-0x0000000000000000-mapping.dmp

Download
memory/1620-19-0x0000000000000000-mapping.dmp

Download
memory/1772-21-0x00000000047FB000-0x00000000047FC000-memory.dmp

Filesize
4KB

Download
memory/1772-22-0x0000000004D40000-0x0000000004D51000-memory.dmp

Filesize
68KB

Download
memory/1952-9-0x0000000000000000-mapping.dmp

Download

Analysis

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