tofsee | 573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09

General

Target

573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe
Size

108KB
MD5

75d4f22da8952b9c6e8c82f72bfedfea
SHA1

95983ed45f7bd53399fb20e54a547308a2f9e9e4
SHA256

573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09
SHA512

e6b945e7c5fc7259690435e780232bb6ffc3b4fd37f2cc9b6f0a7a4c6b9a175e8d84e7997454a0c11cfb44fb78863920191ed3633cee23baaa29f3ea0db0cec3

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\oeczoain = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

ahuuxiav.exe

pid process

1412 ahuuxiav.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1212 netsh.exe

pid	process
1412	ahuuxiav.exe

pid	process
1212	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\oeczoain\ImagePath = "C:\\Windows\\SysWOW64\\oeczoain\\ahuuxiav.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1572 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ahuuxiav.exe

description pid process target process

PID 1412 set thread context of 1572 1412 ahuuxiav.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

1580 sc.exe
1640 sc.exe
580 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
1572	svchost.exe

description	pid	process	target process
PID 1412 set thread context of 1572	1412	ahuuxiav.exe	svchost.exe

pid	process
1580	sc.exe
1640	sc.exe
580	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exeahuuxiav.exe

description	pid	process	target process
PID 1972 wrote to memory of 872	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	cmd.exe
PID 1972 wrote to memory of 872	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	cmd.exe
PID 1972 wrote to memory of 872	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	cmd.exe
PID 1972 wrote to memory of 872	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	cmd.exe
PID 1972 wrote to memory of 1240	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	cmd.exe
PID 1972 wrote to memory of 1240	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	cmd.exe
PID 1972 wrote to memory of 1240	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	cmd.exe
PID 1972 wrote to memory of 1240	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	cmd.exe
PID 1972 wrote to memory of 1580	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	sc.exe
PID 1972 wrote to memory of 1580	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	sc.exe
PID 1972 wrote to memory of 1580	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	sc.exe
PID 1972 wrote to memory of 1580	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	sc.exe
PID 1972 wrote to memory of 1640	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	sc.exe
PID 1972 wrote to memory of 1640	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	sc.exe
PID 1972 wrote to memory of 1640	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	sc.exe
PID 1972 wrote to memory of 1640	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	sc.exe
PID 1972 wrote to memory of 580	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	sc.exe
PID 1972 wrote to memory of 580	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	sc.exe
PID 1972 wrote to memory of 580	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	sc.exe
PID 1972 wrote to memory of 580	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	sc.exe
PID 1972 wrote to memory of 1212	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	netsh.exe
PID 1972 wrote to memory of 1212	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	netsh.exe
PID 1972 wrote to memory of 1212	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	netsh.exe
PID 1972 wrote to memory of 1212	1972	573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe	netsh.exe
PID 1412 wrote to memory of 1572	1412	ahuuxiav.exe	svchost.exe
PID 1412 wrote to memory of 1572	1412	ahuuxiav.exe	svchost.exe
PID 1412 wrote to memory of 1572	1412	ahuuxiav.exe	svchost.exe
PID 1412 wrote to memory of 1572	1412	ahuuxiav.exe	svchost.exe
PID 1412 wrote to memory of 1572	1412	ahuuxiav.exe	svchost.exe
PID 1412 wrote to memory of 1572	1412	ahuuxiav.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe
"C:\Users\Admin\AppData\Local\Temp\573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1972

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oeczoain\
2⤵
PID:872

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ahuuxiav.exe" C:\Windows\SysWOW64\oeczoain\
2⤵
PID:1240

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create oeczoain binPath= "C:\Windows\SysWOW64\oeczoain\ahuuxiav.exe /d\"C:\Users\Admin\AppData\Local\Temp\573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1580

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description oeczoain "wifi internet conection"
2⤵
- Launches sc.exe
PID:1640

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start oeczoain
2⤵
- Launches sc.exe
PID:580

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⤵
- Modifies Windows Firewall
PID:1212

C:\Windows\SysWOW64\oeczoain\ahuuxiav.exe
C:\Windows\SysWOW64\oeczoain\ahuuxiav.exe /d"C:\Users\Admin\AppData\Local\Temp\573ccc7f69afb0fa0d53b19b44a46de73a49dff0239a122d457f4e55a4961c09.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1412

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:1572

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\ahuuxiav.exe
Filesize
14.7MB

MD5
1e3ec18036ea1859a1bbfdd5bb6ebe5f

SHA1
1c08ec77b6710b871eadb0e0543a69a7b5f95fda

SHA256
6d034447fc7f06096cfa0cab03423a9edc5909474b08ca92d3b48b840095f6e6

SHA512
5030a8fd87432b3f4aec37a84fd9c358619fd5b4c58a0fff289c26d3b7851c2ed105c3d7ea9fe2a966a3aa358ad519d4a575d2435f7d359f94285bf55c1109e6

Download Submit
C:\Windows\SysWOW64\oeczoain\ahuuxiav.exe
Filesize
14.7MB

MD5
1e3ec18036ea1859a1bbfdd5bb6ebe5f

SHA1
1c08ec77b6710b871eadb0e0543a69a7b5f95fda

SHA256
6d034447fc7f06096cfa0cab03423a9edc5909474b08ca92d3b48b840095f6e6

SHA512
5030a8fd87432b3f4aec37a84fd9c358619fd5b4c58a0fff289c26d3b7851c2ed105c3d7ea9fe2a966a3aa358ad519d4a575d2435f7d359f94285bf55c1109e6

Download Submit
memory/580-61-0x0000000000000000-mapping.dmp

Download
memory/872-56-0x0000000000000000-mapping.dmp

Download
memory/1212-65-0x0000000000000000-mapping.dmp

Download
memory/1240-57-0x0000000000000000-mapping.dmp

Download
memory/1412-63-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/1572-66-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1572-69-0x00000000000D9A6B-mapping.dmp

Download
memory/1572-68-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1572-72-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1572-74-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1572-75-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1580-59-0x0000000000000000-mapping.dmp

Download
memory/1640-60-0x0000000000000000-mapping.dmp

Download
memory/1972-54-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/1972-55-0x0000000075371000-0x0000000075373000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads