tofsee | 02f0a01080d960877b24986a1352f0ff73578bd313399d1c51aa4cfe16e71e00

General

Target

2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe
Size

13.0MB
MD5

19e2f6a4fa8ae5d5889b48da3e34466f
SHA1

1e07305a902172739d0e4ae63bbb98b65ec1a0af
SHA256

02f0a01080d960877b24986a1352f0ff73578bd313399d1c51aa4cfe16e71e00
SHA512

77946cb445022af663f63b82806d7dee9efb4d6d3f5f0cb380f68ad10b0e35decb49f7bd76354f0ca9b6073095852b0c526c4bedc434412f22e65ab70c983d6b
SSDEEP

24576:bEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ/:ofot

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

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4256	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\bkwckfh\ImagePath = "C:\\Windows\\SysWOW64\\bkwckfh\\chrmgspr.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe

Deletes itself 1 IoCs

pid	Process
584	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4064	chrmgspr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4064 set thread context of 584	4064	chrmgspr.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
2976	sc.exe
220	sc.exe
5048	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3560	3112	WerFault.exe	84
4524	4064	WerFault.exe	96

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	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	chrmgspr.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3112 wrote to memory of 3268	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	86
PID 3112 wrote to memory of 3268	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	86
PID 3112 wrote to memory of 3268	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	86
PID 3112 wrote to memory of 2216	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	88
PID 3112 wrote to memory of 2216	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	88
PID 3112 wrote to memory of 2216	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	88
PID 3112 wrote to memory of 220	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	90
PID 3112 wrote to memory of 220	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	90
PID 3112 wrote to memory of 220	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	90
PID 3112 wrote to memory of 5048	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	92
PID 3112 wrote to memory of 5048	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	92
PID 3112 wrote to memory of 5048	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	92
PID 3112 wrote to memory of 2976	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	94
PID 3112 wrote to memory of 2976	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	94
PID 3112 wrote to memory of 2976	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	94
PID 3112 wrote to memory of 4256	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	97
PID 3112 wrote to memory of 4256	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	97
PID 3112 wrote to memory of 4256	3112	2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe	97
PID 4064 wrote to memory of 584	4064	chrmgspr.exe	103
PID 4064 wrote to memory of 584	4064	chrmgspr.exe	103
PID 4064 wrote to memory of 584	4064	chrmgspr.exe	103
PID 4064 wrote to memory of 584	4064	chrmgspr.exe	103
PID 4064 wrote to memory of 584	4064	chrmgspr.exe	103

C:\Users\Admin\AppData\Local\Temp\2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3112
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bkwckfh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3268
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\chrmgspr.exe" C:\Windows\SysWOW64\bkwckfh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2216
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bkwckfh binPath= "C:\Windows\SysWOW64\bkwckfh\chrmgspr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:220
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bkwckfh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5048
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bkwckfh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2976
- 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:4256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3112 -s 652
  2⤵
  - Program crash
  PID:3560

C:\Windows\SysWOW64\bkwckfh\chrmgspr.exe
C:\Windows\SysWOW64\bkwckfh\chrmgspr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-22_19e2f6a4fa8ae5d5889b48da3e34466f_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4064
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:584
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4064 -s 508
  2⤵
  - Program crash
  PID:4524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3112 -ip 3112
1⤵
PID:552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4064 -ip 4064
1⤵
PID:4404

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
11.5MB

MD5
3a37c690494661f8af8f7f4de77ae672

SHA1
a90c167285760445d743843008cb077ac6404aa9

SHA256
bacd3cade8723f92dc2fb36f0c65ea5249e5f94f8f86acffae4d2e8aafe4c3d6

SHA512
d96a88153539eb2dd3110a4abb11ce9a7f7a908f35c7a61ebd5a523a56186c11a51d250e7bc3701818518a3e1d10cff129f5e69e1005afe082dda4c1866cb132

Download Submit
memory/584-14-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/584-17-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/584-16-0x00000000001C0000-0x00000000001D5000-memory.dmp

Filesize
84KB

Download
memory/3112-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3112-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3112-1-0x0000000000500000-0x0000000000600000-memory.dmp

Filesize
1024KB

Download
memory/3112-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3112-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3112-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4064-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4064-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4064-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4064-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads