tofsee | 6a894de8a5d3285bbefc44ddf433b6a57b6199e649263204eed0d928de401ce2

General

Target

76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe
Size

10.3MB
MD5

81f79ce05d962b7d8b0d4977aead32df
SHA1

e24b156a6ab8da34f07f67256cfacf1495a5eaec
SHA256

76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6
SHA512

710719709d2a5b78b862981cc186b2b8ad7d0654f000e5af41ad7a61af438f3be4ac8cd752740fd4ccb1bf146cf1975beb00aadd921054ce367ee87db099c0b1
SSDEEP

6144:+5VCb4QuzF2tpIozzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz7:48NKF6p

Score

10^/10

tofsee evasion execution persistence privilege_escalation 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
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

4400 netsh.exe

pid	process
4400	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wzvqesaq\ImagePath = "C:\\Windows\\SysWOW64\\wzvqesaq\\hqihqcgx.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3356 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

hqihqcgx.exe

pid process

3148 hqihqcgx.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

hqihqcgx.exe

description pid process target process

PID 3148 set thread context of 3356 3148 hqihqcgx.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

2020 sc.exe
4036 sc.exe
4640 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3356	svchost.exe

pid	process
3148	hqihqcgx.exe

description	pid	process	target process
PID 3148 set thread context of 3356	3148	hqihqcgx.exe	svchost.exe

pid	process
2020	sc.exe
4036	sc.exe
4640	sc.exe

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

Processes:

netsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exehqihqcgx.exe

description	pid	process	target process
PID 3288 wrote to memory of 2420	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	cmd.exe
PID 3288 wrote to memory of 2420	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	cmd.exe
PID 3288 wrote to memory of 2420	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	cmd.exe
PID 3288 wrote to memory of 1692	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	cmd.exe
PID 3288 wrote to memory of 1692	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	cmd.exe
PID 3288 wrote to memory of 1692	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	cmd.exe
PID 3288 wrote to memory of 2020	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	sc.exe
PID 3288 wrote to memory of 2020	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	sc.exe
PID 3288 wrote to memory of 2020	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	sc.exe
PID 3288 wrote to memory of 4036	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	sc.exe
PID 3288 wrote to memory of 4036	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	sc.exe
PID 3288 wrote to memory of 4036	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	sc.exe
PID 3288 wrote to memory of 4640	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	sc.exe
PID 3288 wrote to memory of 4640	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	sc.exe
PID 3288 wrote to memory of 4640	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	sc.exe
PID 3148 wrote to memory of 3356	3148	hqihqcgx.exe	svchost.exe
PID 3148 wrote to memory of 3356	3148	hqihqcgx.exe	svchost.exe
PID 3148 wrote to memory of 3356	3148	hqihqcgx.exe	svchost.exe
PID 3148 wrote to memory of 3356	3148	hqihqcgx.exe	svchost.exe
PID 3148 wrote to memory of 3356	3148	hqihqcgx.exe	svchost.exe
PID 3288 wrote to memory of 4400	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	netsh.exe
PID 3288 wrote to memory of 4400	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	netsh.exe
PID 3288 wrote to memory of 4400	3288	76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe
"C:\Users\Admin\AppData\Local\Temp\76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3288

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wzvqesaq\
2⤵
PID:2420

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hqihqcgx.exe" C:\Windows\SysWOW64\wzvqesaq\
2⤵
PID:1692

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create wzvqesaq binPath= "C:\Windows\SysWOW64\wzvqesaq\hqihqcgx.exe /d\"C:\Users\Admin\AppData\Local\Temp\76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2020

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description wzvqesaq "wifi internet conection"
2⤵
- Launches sc.exe
PID:4036

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start wzvqesaq
2⤵
- Launches sc.exe
PID:4640

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
- Event Triggered Execution: Netsh Helper DLL
PID:4400

C:\Windows\SysWOW64\wzvqesaq\hqihqcgx.exe
C:\Windows\SysWOW64\wzvqesaq\hqihqcgx.exe /d"C:\Users\Admin\AppData\Local\Temp\76ede4f29dbd8a75b643e46cabd369ac888b8012630b8b244e08e0baac8535e6.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3148

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:3356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\hqihqcgx.exe

Filesize
11.4MB

MD5
99e1fd04cc5e4b4eed23a19f9af23827

SHA1
b9ba01bfdcc1237d51cf89a307d8722ecf106dc5

SHA256
d09527f0b42144f55ef830224adb8e1cb2ef447ba564136119764a62cb95e619

SHA512
4259f1ac4c181c21aa5982dccb85a32920ec8d674664c53fb018b39e0b64f31a2109f99333d5381f601cbb5e735cf776eaa0942eff62d89176eaca4b6f5504a2

Download Submit
memory/3356-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3356-6-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3356-7-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3356-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3356-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads