tofsee | bb07448d9a17097cf6476c0adc3b3443d942b30049de82590351b66fccacb4ca

General

Target

c2b875ec37a9272c9f6913e5e51c8c2f.exe
Size

13.8MB
MD5

c2b875ec37a9272c9f6913e5e51c8c2f
SHA1

25f1fcfd9bf08b879bb1fd13a42578e72cc3ad98
SHA256

bb07448d9a17097cf6476c0adc3b3443d942b30049de82590351b66fccacb4ca
SHA512

6c285a552db5de631f5e293292c4bcd426fb982579113c4817c84d9d9a72702cf7038d62b3c3ec1814c6bb1ef0a99f5603dd92e31d5ed89f0f163855e0759350
SSDEEP

6144:x+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:x+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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

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

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

2620 netsh.exe

pid	process
2620	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\ypdgczas\ImagePath = "C:\\Windows\\SysWOW64\\ypdgczas\\siohiqgp.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2532 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

siohiqgp.exe

pid process

2804 siohiqgp.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

siohiqgp.exe

description pid process target process

PID 2804 set thread context of 2532 2804 siohiqgp.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

2640 sc.exe
2100 sc.exe
2904 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2532	svchost.exe

pid	process
2804	siohiqgp.exe

description	pid	process	target process
PID 2804 set thread context of 2532	2804	siohiqgp.exe	svchost.exe

pid	process
2640	sc.exe
2100	sc.exe
2904	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 30 IoCs

Processes:

c2b875ec37a9272c9f6913e5e51c8c2f.exesiohiqgp.exe

description	pid	process	target process
PID 2424 wrote to memory of 1696	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	cmd.exe
PID 2424 wrote to memory of 1696	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	cmd.exe
PID 2424 wrote to memory of 1696	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	cmd.exe
PID 2424 wrote to memory of 1696	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	cmd.exe
PID 2424 wrote to memory of 2692	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	cmd.exe
PID 2424 wrote to memory of 2692	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	cmd.exe
PID 2424 wrote to memory of 2692	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	cmd.exe
PID 2424 wrote to memory of 2692	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	cmd.exe
PID 2424 wrote to memory of 2100	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	sc.exe
PID 2424 wrote to memory of 2100	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	sc.exe
PID 2424 wrote to memory of 2100	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	sc.exe
PID 2424 wrote to memory of 2100	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	sc.exe
PID 2424 wrote to memory of 2904	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	sc.exe
PID 2424 wrote to memory of 2904	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	sc.exe
PID 2424 wrote to memory of 2904	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	sc.exe
PID 2424 wrote to memory of 2904	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	sc.exe
PID 2424 wrote to memory of 2640	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	sc.exe
PID 2424 wrote to memory of 2640	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	sc.exe
PID 2424 wrote to memory of 2640	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	sc.exe
PID 2424 wrote to memory of 2640	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	sc.exe
PID 2804 wrote to memory of 2532	2804	siohiqgp.exe	svchost.exe
PID 2804 wrote to memory of 2532	2804	siohiqgp.exe	svchost.exe
PID 2804 wrote to memory of 2532	2804	siohiqgp.exe	svchost.exe
PID 2804 wrote to memory of 2532	2804	siohiqgp.exe	svchost.exe
PID 2804 wrote to memory of 2532	2804	siohiqgp.exe	svchost.exe
PID 2804 wrote to memory of 2532	2804	siohiqgp.exe	svchost.exe
PID 2424 wrote to memory of 2620	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	netsh.exe
PID 2424 wrote to memory of 2620	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	netsh.exe
PID 2424 wrote to memory of 2620	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	netsh.exe
PID 2424 wrote to memory of 2620	2424	c2b875ec37a9272c9f6913e5e51c8c2f.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\c2b875ec37a9272c9f6913e5e51c8c2f.exe
"C:\Users\Admin\AppData\Local\Temp\c2b875ec37a9272c9f6913e5e51c8c2f.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2424

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ypdgczas\
2⤵
PID:1696

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\siohiqgp.exe" C:\Windows\SysWOW64\ypdgczas\
2⤵
PID:2692

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create ypdgczas binPath= "C:\Windows\SysWOW64\ypdgczas\siohiqgp.exe /d\"C:\Users\Admin\AppData\Local\Temp\c2b875ec37a9272c9f6913e5e51c8c2f.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2100

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description ypdgczas "wifi internet conection"
2⤵
- Launches sc.exe
PID:2904

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start ypdgczas
2⤵
- Launches sc.exe
PID:2640

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:2620

C:\Windows\SysWOW64\ypdgczas\siohiqgp.exe
C:\Windows\SysWOW64\ypdgczas\siohiqgp.exe /d"C:\Users\Admin\AppData\Local\Temp\c2b875ec37a9272c9f6913e5e51c8c2f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2804

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2532

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\siohiqgp.exe
Filesize
11.6MB

MD5
2a58278ac79b0ca7a63d8f52ac03758c

SHA1
fa1d8b6b09dd1c6ff6356fedf8958d19c8655d01

SHA256
ec1b91809c0288696e2cfbf6ccee7826e8c0e33652cb4a9db3a9a386866d9c62

SHA512
ddc36a20bc39a4abc1b9a057d1e1bcb9eb32286b85aba6ec0f5b22a5e68d762e614e9b183b5da986b1a49359a77540a34f1ef0f9ae365610ba9f19a0b700248d

Download Submit
memory/2424-1-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download
memory/2424-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2424-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2424-13-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2532-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2532-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2532-7-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2532-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2532-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2804-12-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads