tofsee | 5261edddfdea12841188800723f12edbd0e0b9d021855827ded935c29c0f36e1

General

Target

2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe
Size

13.9MB
MD5

dbe440eadee03dc056718f695dcb66e7
SHA1

4cb4b7dd184cb3ab34daa57cb3706e0cc4fa75cf
SHA256

5261edddfdea12841188800723f12edbd0e0b9d021855827ded935c29c0f36e1
SHA512

24cbc6e40447b2964bed072a4f4f60f9024cdada6a68200ea141c761963d694d5c58e5edc4b9aafa18c3ff4aa0353a2954a3954c2a5ea96a1038f234f65a45fd
SSDEEP

6144:d+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:d+r1IeSXMXc7LlxWV4Ug97GZ+ej

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

1992 netsh.exe

pid	process
1992	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\chwafsnp\ImagePath = "C:\\Windows\\SysWOW64\\chwafsnp\\pnuqpywn.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:

2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4504 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

pnuqpywn.exe

pid process

4612 pnuqpywn.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

pnuqpywn.exe

description pid process target process

PID 4612 set thread context of 4504 4612 pnuqpywn.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

3428 sc.exe
2072 sc.exe
1136 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4504	svchost.exe

pid	process
4612	pnuqpywn.exe

description	pid	process	target process
PID 4612 set thread context of 4504	4612	pnuqpywn.exe	svchost.exe

pid	process
3428	sc.exe
2072	sc.exe
1136	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:

2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exepnuqpywn.exe

description	pid	process	target process
PID 4616 wrote to memory of 3056	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	cmd.exe
PID 4616 wrote to memory of 3056	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	cmd.exe
PID 4616 wrote to memory of 3056	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	cmd.exe
PID 4616 wrote to memory of 1936	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	cmd.exe
PID 4616 wrote to memory of 1936	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	cmd.exe
PID 4616 wrote to memory of 1936	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	cmd.exe
PID 4616 wrote to memory of 3428	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	sc.exe
PID 4616 wrote to memory of 3428	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	sc.exe
PID 4616 wrote to memory of 3428	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	sc.exe
PID 4616 wrote to memory of 2072	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	sc.exe
PID 4616 wrote to memory of 2072	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	sc.exe
PID 4616 wrote to memory of 2072	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	sc.exe
PID 4616 wrote to memory of 1136	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	sc.exe
PID 4616 wrote to memory of 1136	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	sc.exe
PID 4616 wrote to memory of 1136	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	sc.exe
PID 4616 wrote to memory of 1992	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	netsh.exe
PID 4616 wrote to memory of 1992	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	netsh.exe
PID 4616 wrote to memory of 1992	4616	2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe	netsh.exe
PID 4612 wrote to memory of 4504	4612	pnuqpywn.exe	svchost.exe
PID 4612 wrote to memory of 4504	4612	pnuqpywn.exe	svchost.exe
PID 4612 wrote to memory of 4504	4612	pnuqpywn.exe	svchost.exe
PID 4612 wrote to memory of 4504	4612	pnuqpywn.exe	svchost.exe
PID 4612 wrote to memory of 4504	4612	pnuqpywn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4616

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\chwafsnp\
2⤵
PID:3056

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pnuqpywn.exe" C:\Windows\SysWOW64\chwafsnp\
2⤵
PID:1936

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create chwafsnp binPath= "C:\Windows\SysWOW64\chwafsnp\pnuqpywn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3428

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description chwafsnp "wifi internet conection"
2⤵
- Launches sc.exe
PID:2072

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start chwafsnp
2⤵
- Launches sc.exe
PID:1136

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:1992

C:\Windows\SysWOW64\chwafsnp\pnuqpywn.exe
C:\Windows\SysWOW64\chwafsnp\pnuqpywn.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-06-20_dbe440eadee03dc056718f695dcb66e7_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4612

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4504

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

Replay Monitor

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Downloads

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

Filesize
14.7MB

MD5
aac628c29c3464d00c07a0687dc784af

SHA1
3ecbdd85e573faec97362e0d79aa278bbdd316ba

SHA256
b6890ca4f036f3fc5642783714f57e6924a8d76a6876f99fa8d5d94630721429

SHA512
e7ae29409e395e2ede972e6b2d193f7bcdfda7540b5c6c9895bf80bb4840e4b9ca274eeb5d62719ea8b398bf110ca9fe1cab86e5c50f6b577836d2fe1bded87b

Download Submit
memory/4504-10-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/4504-16-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/4504-15-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/4504-17-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/4504-18-0x0000000000570000-0x0000000000585000-memory.dmp

Filesize
84KB

Download
memory/4612-11-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/4612-9-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/4616-1-0x0000000000770000-0x0000000000870000-memory.dmp

Filesize
1024KB

Download
memory/4616-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4616-6-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/4616-7-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads