tofsee | e7b98c46e1523ea9a7d9912a4824d52108e805d831755a09933f1f0e117f0798

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
09/07/2024, 12:08

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General

Target
2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe
Size 13.2MB
Sample240709-pawwlsvend
SHA256 e7b98c46e1523ea9a7d9912a4824d52108e805d831755a09933f1f0e117f0798
MD5 fef73a22d5bdf052cbfbafd4fbc4ebad
SHA1 4b214b5073466b7c5ca0087184750865701195e7
SHA512 f863b8f3f12b50a566c7270db111318e1e0c04f0981aafa89d14736ac9fb83f6bb197ed0cb56f7ed9387950605aa0d39d57fa65f149a6e584898ee2b3cf06c01
SSDEEP 6144:M+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:M+r1IeSXMXc7LlxWV4Ug97GZ+ej
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

pid	Process
184	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\juxrxude\ImagePath = "C:\\Windows\\SysWOW64\\juxrxude\\bxrxdfxo.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-587429654-1855694383-2268796072-1000\Control Panel\International\Geo\Nation	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe

Deletes itself 1 IoCs

pid	Process
1868	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2312	bxrxdfxo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2312 set thread context of 1868	2312	bxrxdfxo.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2368	sc.exe
4092	sc.exe
208	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 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

description	pid	Process	procid_target
PID 800 wrote to memory of 2956	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	85
PID 800 wrote to memory of 2956	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	85
PID 800 wrote to memory of 2956	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	85
PID 800 wrote to memory of 2548	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	87
PID 800 wrote to memory of 2548	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	87
PID 800 wrote to memory of 2548	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	87
PID 800 wrote to memory of 2368	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	89
PID 800 wrote to memory of 2368	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	89
PID 800 wrote to memory of 2368	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	89
PID 800 wrote to memory of 4092	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	91
PID 800 wrote to memory of 4092	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	91
PID 800 wrote to memory of 4092	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	91
PID 800 wrote to memory of 208	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	93
PID 800 wrote to memory of 208	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	93
PID 800 wrote to memory of 208	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	93
PID 800 wrote to memory of 184	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	96
PID 800 wrote to memory of 184	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	96
PID 800 wrote to memory of 184	800	2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe	96
PID 2312 wrote to memory of 1868	2312	bxrxdfxo.exe	98
PID 2312 wrote to memory of 1868	2312	bxrxdfxo.exe	98
PID 2312 wrote to memory of 1868	2312	bxrxdfxo.exe	98
PID 2312 wrote to memory of 1868	2312	bxrxdfxo.exe	98
PID 2312 wrote to memory of 1868	2312	bxrxdfxo.exe	98

C:\Users\Admin\AppData\Local\Temp\2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:800
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\juxrxude\
  2⤵
  PID:2956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bxrxdfxo.exe" C:\Windows\SysWOW64\juxrxude\
  2⤵
  PID:2548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create juxrxude binPath= "C:\Windows\SysWOW64\juxrxude\bxrxdfxo.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2368
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description juxrxude "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4092
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start juxrxude
  2⤵
  - Launches sc.exe
  PID:208
- 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:184

C:\Windows\SysWOW64\juxrxude\bxrxdfxo.exe
C:\Windows\SysWOW64\juxrxude\bxrxdfxo.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-07-09_fef73a22d5bdf052cbfbafd4fbc4ebad_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2312
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:1868

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

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

bxrxdfxo.exe

Path C:\Users\Admin\AppData\Local\Temp\bxrxdfxo.exe
Size 14.9MB
SHA256 5d7ce1217e714e8c979ad63c3a611f2f90d0b38f3d8fd9d7d792cdd0f08ab228
MD5 9e81d06909aced4b86b263b175c88ccf
SHA1 e422c5db55d5e32b14868481c0b9c23c28be97d4
SHA512 6a84fbc8d6a69a3d5130e7d3d93f6deaddea9572ef7e3aadf507e17bcd6b8b2675061751ea172a759a8fbcee884e43566b15838bd35947fba5e017bc2cfe2953
SSDEEP 6144:l+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:l+r1IeSXMXc7LlxWV4Ug97GZ+ej
MD5 SHA1 SHA512 SSDEEP

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memory/800-1-0x00000000007A0000-0x00000000008A0000-memory.dmp

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memory/800-2-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/800-7-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/800-6-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/1868-15-0x0000000000460000-0x0000000000475000-memory.dmp

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memory/1868-13-0x0000000000460000-0x0000000000475000-memory.dmp

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memory/1868-10-0x0000000000460000-0x0000000000475000-memory.dmp

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memory/1868-17-0x0000000000460000-0x0000000000475000-memory.dmp

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memory/1868-18-0x0000000000460000-0x0000000000475000-memory.dmp

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memory/2312-14-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/2312-9-0x0000000000400000-0x000000000051A000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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