tofsee | 1095e251f8219d5aa618e9dc41ac314fb1cb1989580bdd60dac00cd6a903d053

General

Target

3ca6d488bd6aff540495e9624fdb502d.exe
Size

11.1MB
MD5

3ca6d488bd6aff540495e9624fdb502d
SHA1

c050425bb11844672672ec0a87808b731afefd2a
SHA256

1095e251f8219d5aa618e9dc41ac314fb1cb1989580bdd60dac00cd6a903d053
SHA512

73a4fc3beab31fe61f46fd67af4d5077ed8707c7ed80fc29981512d417b524ec46a2f49ada955efea011533d9b4cbefa8d17365132bef5ed6ca75bd69a8271f6

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:

aazfqelo.exe

pid process

1752 aazfqelo.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

784 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

aazfqelo.exe

description pid process target process

PID 1752 set thread context of 784 1752 aazfqelo.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
1752	aazfqelo.exe

pid	process
784	svchost.exe

description	pid	process	target process
PID 1752 set thread context of 784	1752	aazfqelo.exe	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

3ca6d488bd6aff540495e9624fdb502d.exeaazfqelo.exe

description	pid	process	target process
PID 1656 wrote to memory of 2040	1656	3ca6d488bd6aff540495e9624fdb502d.exe	cmd.exe
PID 1656 wrote to memory of 2040	1656	3ca6d488bd6aff540495e9624fdb502d.exe	cmd.exe
PID 1656 wrote to memory of 2040	1656	3ca6d488bd6aff540495e9624fdb502d.exe	cmd.exe
PID 1656 wrote to memory of 2040	1656	3ca6d488bd6aff540495e9624fdb502d.exe	cmd.exe
PID 1656 wrote to memory of 1192	1656	3ca6d488bd6aff540495e9624fdb502d.exe	cmd.exe
PID 1656 wrote to memory of 1192	1656	3ca6d488bd6aff540495e9624fdb502d.exe	cmd.exe
PID 1656 wrote to memory of 1192	1656	3ca6d488bd6aff540495e9624fdb502d.exe	cmd.exe
PID 1656 wrote to memory of 1192	1656	3ca6d488bd6aff540495e9624fdb502d.exe	cmd.exe
PID 1656 wrote to memory of 1776	1656	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 1656 wrote to memory of 1776	1656	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 1656 wrote to memory of 1776	1656	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 1656 wrote to memory of 1776	1656	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 1656 wrote to memory of 608	1656	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 1656 wrote to memory of 608	1656	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 1656 wrote to memory of 608	1656	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 1656 wrote to memory of 608	1656	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 1656 wrote to memory of 1552	1656	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 1656 wrote to memory of 1552	1656	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 1656 wrote to memory of 1552	1656	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 1656 wrote to memory of 1552	1656	3ca6d488bd6aff540495e9624fdb502d.exe	sc.exe
PID 1656 wrote to memory of 1092	1656	3ca6d488bd6aff540495e9624fdb502d.exe	netsh.exe
PID 1656 wrote to memory of 1092	1656	3ca6d488bd6aff540495e9624fdb502d.exe	netsh.exe
PID 1656 wrote to memory of 1092	1656	3ca6d488bd6aff540495e9624fdb502d.exe	netsh.exe
PID 1656 wrote to memory of 1092	1656	3ca6d488bd6aff540495e9624fdb502d.exe	netsh.exe
PID 1752 wrote to memory of 784	1752	aazfqelo.exe	svchost.exe
PID 1752 wrote to memory of 784	1752	aazfqelo.exe	svchost.exe
PID 1752 wrote to memory of 784	1752	aazfqelo.exe	svchost.exe
PID 1752 wrote to memory of 784	1752	aazfqelo.exe	svchost.exe
PID 1752 wrote to memory of 784	1752	aazfqelo.exe	svchost.exe
PID 1752 wrote to memory of 784	1752	aazfqelo.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\3ca6d488bd6aff540495e9624fdb502d.exe
"C:\Users\Admin\AppData\Local\Temp\3ca6d488bd6aff540495e9624fdb502d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1656

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ipqvqslg\
2⤵
PID:2040

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\aazfqelo.exe" C:\Windows\SysWOW64\ipqvqslg\
2⤵
PID:1192

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create ipqvqslg binPath= "C:\Windows\SysWOW64\ipqvqslg\aazfqelo.exe /d\"C:\Users\Admin\AppData\Local\Temp\3ca6d488bd6aff540495e9624fdb502d.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:1776

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description ipqvqslg "wifi internet conection"
2⤵
PID:608

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start ipqvqslg
2⤵
PID:1552

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:1092

C:\Windows\SysWOW64\ipqvqslg\aazfqelo.exe
C:\Windows\SysWOW64\ipqvqslg\aazfqelo.exe /d"C:\Users\Admin\AppData\Local\Temp\3ca6d488bd6aff540495e9624fdb502d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1752

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:784

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\aazfqelo.exe
MD5
9b31db23d6379e879f19bad4590c064f

SHA1
69c1412ccc7b412c1df089ca6fba020dc6a3d203

SHA256
85650bbbc5f976590544c5b05ec8a9afa177c0a00546c558051b57ce9d7c2eb5

SHA512
8d3b9a2d688c06dbb0c42f1423c4156fc049ac0e5915ead01ee911a662909fef630266ba8a562471be5a694cbf19380c99473106314906378a64ab312e81188f

Download Submit
C:\Windows\SysWOW64\ipqvqslg\aazfqelo.exe
MD5
9b31db23d6379e879f19bad4590c064f

SHA1
69c1412ccc7b412c1df089ca6fba020dc6a3d203

SHA256
85650bbbc5f976590544c5b05ec8a9afa177c0a00546c558051b57ce9d7c2eb5

SHA512
8d3b9a2d688c06dbb0c42f1423c4156fc049ac0e5915ead01ee911a662909fef630266ba8a562471be5a694cbf19380c99473106314906378a64ab312e81188f

Download Submit
memory/608-6-0x0000000000000000-mapping.dmp

Download
memory/784-10-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/784-11-0x00000000000C9A6B-mapping.dmp

Download
memory/1092-8-0x0000000000000000-mapping.dmp

Download
memory/1192-3-0x0000000000000000-mapping.dmp

Download
memory/1552-7-0x0000000000000000-mapping.dmp

Download
memory/1776-5-0x0000000000000000-mapping.dmp

Download
memory/2040-2-0x0000000000000000-mapping.dmp

Download

Analysis

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