tofsee | bf401d6e9c1ac69b17073b0d4fb699870f2d4eacb53ca52e4b3fa0fdba47b5ac

Analysis

max time kernel
146s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27/01/2025, 18:48

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe
Size

13.2MB
MD5

ea50ccb5030d77cff9aa0307373d5956
SHA1

709184a2c6dab5d26455aa075e75b3e3353f6522
SHA256

bf401d6e9c1ac69b17073b0d4fb699870f2d4eacb53ca52e4b3fa0fdba47b5ac
SHA512

f31b63e5ea32e430aab05e83bbab5f62ec8f6c1dee4b007f042d458a2f182dad50db6b405a38dc515ceb37d2c97827ddd544851cacd584a4c5903c7be50f9bfd
SSDEEP

3072:JLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:MOMdRQr7OB0ypmMXnl8XEPM3noSWOC

Score

10^/10

tofsee defense_evasion discovery 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
Tofsee family
tofsee

Windows security bypass 2 TTPs 1 IoCs

defense_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\nrsieppl = "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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2756	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\nrsieppl\ImagePath = "C:\\Windows\\SysWOW64\\nrsieppl\\awoolazn.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2872	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2892	awoolazn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2892 set thread context of 2872	2892	awoolazn.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2788	sc.exe
2748	sc.exe
2840	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

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	awoolazn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 1528	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	30
PID 2156 wrote to memory of 1528	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	30
PID 2156 wrote to memory of 1528	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	30
PID 2156 wrote to memory of 1528	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	30
PID 2156 wrote to memory of 3052	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	32
PID 2156 wrote to memory of 3052	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	32
PID 2156 wrote to memory of 3052	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	32
PID 2156 wrote to memory of 3052	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	32
PID 2156 wrote to memory of 2788	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	34
PID 2156 wrote to memory of 2788	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	34
PID 2156 wrote to memory of 2788	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	34
PID 2156 wrote to memory of 2788	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	34
PID 2156 wrote to memory of 2748	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	36
PID 2156 wrote to memory of 2748	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	36
PID 2156 wrote to memory of 2748	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	36
PID 2156 wrote to memory of 2748	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	36
PID 2156 wrote to memory of 2840	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	38
PID 2156 wrote to memory of 2840	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	38
PID 2156 wrote to memory of 2840	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	38
PID 2156 wrote to memory of 2840	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	38
PID 2156 wrote to memory of 2756	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	41
PID 2156 wrote to memory of 2756	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	41
PID 2156 wrote to memory of 2756	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	41
PID 2156 wrote to memory of 2756	2156	2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe	41
PID 2892 wrote to memory of 2872	2892	awoolazn.exe	43
PID 2892 wrote to memory of 2872	2892	awoolazn.exe	43
PID 2892 wrote to memory of 2872	2892	awoolazn.exe	43
PID 2892 wrote to memory of 2872	2892	awoolazn.exe	43
PID 2892 wrote to memory of 2872	2892	awoolazn.exe	43
PID 2892 wrote to memory of 2872	2892	awoolazn.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nrsieppl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1528
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\awoolazn.exe" C:\Windows\SysWOW64\nrsieppl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nrsieppl binPath= "C:\Windows\SysWOW64\nrsieppl\awoolazn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2788
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nrsieppl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nrsieppl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2840
- 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:2756

C:\Windows\SysWOW64\nrsieppl\awoolazn.exe
C:\Windows\SysWOW64\nrsieppl\awoolazn.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-27_ea50ccb5030d77cff9aa0307373d5956_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2892
- 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:2872

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
13.6MB

MD5
25eb8ef958ab131de9e2b2870f8ec558

SHA1
7a8d95ff068172bc9841449ae341ca987ad766b0

SHA256
7957930e25da13042f5d48070555184786fc609e833f075e3cb415fa539ec71f

SHA512
cc5ac2f822983fa24930ccf8b89f56d67f55655c6f17262b0916175bb75071db42b26be2b70d192aed929eae10fd77d34f596a4a8fb29ef201d6c7ede35b2c57

Download Submit
memory/2156-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2156-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2156-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2156-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2156-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2156-1-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/2872-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2872-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2872-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2872-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2872-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2892-15-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads