tofsee | 88a0ec5661e4053db3ae743ca0067ca44181f19c8045bf16e92b82f284c1f612

General

Target

2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe
Size

10.0MB
MD5

a17dce0792745f3ab8c94aefd70493c5
SHA1

47bde0b942b246e5a5f99722c1bca39b8cd3e277
SHA256

88a0ec5661e4053db3ae743ca0067ca44181f19c8045bf16e92b82f284c1f612
SHA512

786e6afc7dd2093eacee1db34e88ba3258a7fd2accfae5e9cca4f2ebc664bce8425a2b680335afacbcf6172338b118f8d388d778bfbc53b0cef95b151f7c388e
SSDEEP

24576:vpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttn:hoo

Score

10^/10

tofsee defense_evasion discovery 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
Tofsee family
tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Downloads MZ/PE file 1 IoCs

flow	pid	Process
34	1488	Process not Found

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1600	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\agvsliat\ImagePath = "C:\\Windows\\SysWOW64\\agvsliat\\cpbyrejt.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-1-5-21-189444705-1272902858-1305688695-1000\Control Panel\International\Geo\Nation	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe

Deletes itself 1 IoCs

pid	Process
3772	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
688	cpbyrejt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 688 set thread context of 3772	688	cpbyrejt.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
2508	sc.exe
4816	sc.exe
5076	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3092	2388	WerFault.exe	85
1856	688	WerFault.exe	100

System Location Discovery: System Language Discovery 1 TTPs 10 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	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe
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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cpbyrejt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3440	MicrosoftEdgeUpdate.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2388 wrote to memory of 3172	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	89
PID 2388 wrote to memory of 3172	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	89
PID 2388 wrote to memory of 3172	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	89
PID 2388 wrote to memory of 3040	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	91
PID 2388 wrote to memory of 3040	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	91
PID 2388 wrote to memory of 3040	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	91
PID 2388 wrote to memory of 4816	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	93
PID 2388 wrote to memory of 4816	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	93
PID 2388 wrote to memory of 4816	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	93
PID 2388 wrote to memory of 5076	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	95
PID 2388 wrote to memory of 5076	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	95
PID 2388 wrote to memory of 5076	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	95
PID 2388 wrote to memory of 2508	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	98
PID 2388 wrote to memory of 2508	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	98
PID 2388 wrote to memory of 2508	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	98
PID 2388 wrote to memory of 1600	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	101
PID 2388 wrote to memory of 1600	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	101
PID 2388 wrote to memory of 1600	2388	2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe	101
PID 688 wrote to memory of 3772	688	cpbyrejt.exe	107
PID 688 wrote to memory of 3772	688	cpbyrejt.exe	107
PID 688 wrote to memory of 3772	688	cpbyrejt.exe	107
PID 688 wrote to memory of 3772	688	cpbyrejt.exe	107
PID 688 wrote to memory of 3772	688	cpbyrejt.exe	107

C:\Users\Admin\AppData\Local\Temp\2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\agvsliat\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3172
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cpbyrejt.exe" C:\Windows\SysWOW64\agvsliat\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3040
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create agvsliat binPath= "C:\Windows\SysWOW64\agvsliat\cpbyrejt.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description agvsliat "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5076
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start agvsliat
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2508
- 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:1600
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2388 -s 1036
  2⤵
  - Program crash
  PID:3092

C:\Windows\SysWOW64\agvsliat\cpbyrejt.exe
C:\Windows\SysWOW64\agvsliat\cpbyrejt.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-08_a17dce0792745f3ab8c94aefd70493c5_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:688
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3772
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 688 -s 560
  2⤵
  - Program crash
  PID:1856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2388 -ip 2388
1⤵
PID:4084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 688 -ip 688
1⤵
PID:3448

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU5MjEiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODE5ODA3NzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0ODYxMTcwNDUxIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:3440

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
10.5MB

MD5
856b671976fe6cfe55c7ccb14810aa5e

SHA1
665812759d20e043709e84c8cbb98710951cffe6

SHA256
278b486466ab6b8d3d98a0b2fe55c075daceeb5fa7fc306a26aaa5d6406a41a1

SHA512
0694be67f0a68f8c06ce1c78ad7092a5a4a32fda39cf7fe1ca13f7465e6afac580670a871b2b946c03e567159adb66b7d43b668635b6a6e51ca554169e198d52

Download Submit
memory/688-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/688-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/688-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/688-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2388-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2388-2-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/2388-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2388-8-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/2388-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2388-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/3772-14-0x00000000007C0000-0x00000000007D5000-memory.dmp

Filesize
84KB

Download
memory/3772-16-0x00000000007C0000-0x00000000007D5000-memory.dmp

Filesize
84KB

Download
memory/3772-17-0x00000000007C0000-0x00000000007D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads