tofsee | fc8b39e1550508fc277adb212c06b4d858eec204fe9157947fcd8db28296a1d4

Analysis

max time kernel
146s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06-09-2024 23:47

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General

Target

8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe
Size

14.6MB
MD5

e22e7c6baeebd701b760f4a27a02d8c4
SHA1

1b924330a134a074ecb6f59affde76d6989100c0
SHA256

8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda
SHA512

aa15560cb2fee8ae0c07acc6403f1ec9f33dc63cd6965d5e8af2f645970bb3c0fb7cec48646ddcaaa0fbef010bcdbc0468ea5c78658ea25994d1e1cd80e904e4
SSDEEP

98304:SC+PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPf:x

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru

refabyd.info

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

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\brqbbfqz = "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

pid	Process
2716	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\brqbbfqz\ImagePath = "C:\\Windows\\SysWOW64\\brqbbfqz\\mpiqoqyi.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2504	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2652	mpiqoqyi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2652 set thread context of 2504	2652	mpiqoqyi.exe	41

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2760	sc.exe
2920	sc.exe
2388	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

description	ioc	Process
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mpiqoqyi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 800 wrote to memory of 2896	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	28
PID 800 wrote to memory of 2896	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	28
PID 800 wrote to memory of 2896	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	28
PID 800 wrote to memory of 2896	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	28
PID 800 wrote to memory of 1584	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	30
PID 800 wrote to memory of 1584	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	30
PID 800 wrote to memory of 1584	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	30
PID 800 wrote to memory of 1584	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	30
PID 800 wrote to memory of 2760	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	32
PID 800 wrote to memory of 2760	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	32
PID 800 wrote to memory of 2760	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	32
PID 800 wrote to memory of 2760	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	32
PID 800 wrote to memory of 2920	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	34
PID 800 wrote to memory of 2920	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	34
PID 800 wrote to memory of 2920	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	34
PID 800 wrote to memory of 2920	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	34
PID 800 wrote to memory of 2388	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	36
PID 800 wrote to memory of 2388	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	36
PID 800 wrote to memory of 2388	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	36
PID 800 wrote to memory of 2388	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	36
PID 800 wrote to memory of 2716	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	39
PID 800 wrote to memory of 2716	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	39
PID 800 wrote to memory of 2716	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	39
PID 800 wrote to memory of 2716	800	8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe	39
PID 2652 wrote to memory of 2504	2652	mpiqoqyi.exe	41
PID 2652 wrote to memory of 2504	2652	mpiqoqyi.exe	41
PID 2652 wrote to memory of 2504	2652	mpiqoqyi.exe	41
PID 2652 wrote to memory of 2504	2652	mpiqoqyi.exe	41
PID 2652 wrote to memory of 2504	2652	mpiqoqyi.exe	41
PID 2652 wrote to memory of 2504	2652	mpiqoqyi.exe	41

C:\Users\Admin\AppData\Local\Temp\8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe
"C:\Users\Admin\AppData\Local\Temp\8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:800
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\brqbbfqz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mpiqoqyi.exe" C:\Windows\SysWOW64\brqbbfqz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create brqbbfqz binPath= "C:\Windows\SysWOW64\brqbbfqz\mpiqoqyi.exe /d\"C:\Users\Admin\AppData\Local\Temp\8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description brqbbfqz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start brqbbfqz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2388
- 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
  - System Location Discovery: System Language Discovery
  PID:2716

C:\Windows\SysWOW64\brqbbfqz\mpiqoqyi.exe
C:\Windows\SysWOW64\brqbbfqz\mpiqoqyi.exe /d"C:\Users\Admin\AppData\Local\Temp\8f770e85d9789cd77a5ebdf321ae54f5162d4b28c9f929ba4bf109bb770acfda.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2652
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2504

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
13.9MB

MD5
5c015adf5474640d96f6ecc0ab3003d4

SHA1
fe28029af1cf211e1dbccf479daad6df358c3693

SHA256
f0f2f1e158f94bde16306147e015a6fe2a871beb1e28697aa8d246a4f6d67d00

SHA512
bee2a071617e37dceb0135c7f113d450ba945ad4c8f3823fde5253756dc20a7f660d57b038401372eb8d246f8753b0b267dc451647398522eff8714017f49881

Download Submit
memory/800-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/800-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/800-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/800-8-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/800-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/800-1-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/2504-12-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2504-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2504-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2504-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2504-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2652-15-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads