tofsee | b473616b0f304d267ffb1744d642af6c12fe6de23156c7762c943d460dafd371

General

Target

2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe
Size

12.8MB
MD5

48aef0f0988a64f18348e4b39346e2ac
SHA1

0c97b84c07208aae8742fba4d6699185c19e247a
SHA256

b473616b0f304d267ffb1744d642af6c12fe6de23156c7762c943d460dafd371
SHA512

1554636eda69ba604915169212adb3d56bf634e5274e95a98d7df3b3426020a6437e9fd3ba36eefaf5bf93d682558ab03ea2fa1c01feb37ebf85a002c7760e67
SSDEEP

24576:mpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttn:qoo

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
1372	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\kpjwnykc\ImagePath = "C:\\Windows\\SysWOW64\\kpjwnykc\\sjrpzubp.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe

Deletes itself 1 IoCs

pid	Process
4452	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
440	sjrpzubp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 440 set thread context of 4452	440	sjrpzubp.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
636	sc.exe
1004	sc.exe
2788	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
5032	3284	WerFault.exe	82
3820	440	WerFault.exe	94

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sjrpzubp.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	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	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3284 wrote to memory of 3576	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	83
PID 3284 wrote to memory of 3576	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	83
PID 3284 wrote to memory of 3576	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	83
PID 3284 wrote to memory of 2932	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	86
PID 3284 wrote to memory of 2932	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	86
PID 3284 wrote to memory of 2932	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	86
PID 3284 wrote to memory of 1004	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	88
PID 3284 wrote to memory of 1004	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	88
PID 3284 wrote to memory of 1004	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	88
PID 3284 wrote to memory of 2788	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	90
PID 3284 wrote to memory of 2788	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	90
PID 3284 wrote to memory of 2788	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	90
PID 3284 wrote to memory of 636	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	92
PID 3284 wrote to memory of 636	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	92
PID 3284 wrote to memory of 636	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	92
PID 3284 wrote to memory of 1372	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	95
PID 3284 wrote to memory of 1372	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	95
PID 3284 wrote to memory of 1372	3284	2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe	95
PID 440 wrote to memory of 4452	440	sjrpzubp.exe	101
PID 440 wrote to memory of 4452	440	sjrpzubp.exe	101
PID 440 wrote to memory of 4452	440	sjrpzubp.exe	101
PID 440 wrote to memory of 4452	440	sjrpzubp.exe	101
PID 440 wrote to memory of 4452	440	sjrpzubp.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3284
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kpjwnykc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3576
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sjrpzubp.exe" C:\Windows\SysWOW64\kpjwnykc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kpjwnykc binPath= "C:\Windows\SysWOW64\kpjwnykc\sjrpzubp.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1004
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kpjwnykc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2788
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kpjwnykc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:636
- 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:1372
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3284 -s 1044
  2⤵
  - Program crash
  PID:5032

C:\Windows\SysWOW64\kpjwnykc\sjrpzubp.exe
C:\Windows\SysWOW64\kpjwnykc\sjrpzubp.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_48aef0f0988a64f18348e4b39346e2ac_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:440
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4452
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 440 -s 516
  2⤵
  - Program crash
  PID:3820

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3284 -ip 3284
1⤵
PID:2848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 440 -ip 440
1⤵
PID:1716

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\sjrpzubp.exe

Filesize
12.4MB

MD5
e21ad4b455923ca31692e99b78795eca

SHA1
eaf5ccb585378def30dc82628831963b6ecc57bb

SHA256
759752cb2edef2be9bff26567639ce64b18ad79ca84ff73c52c55e8443e5dd02

SHA512
690858d620bebfc446056425ee74e0d583fa17526b2a302a073e669194e67a376292068a891083fd45e2442c04ec32e8d4e10bec60591060d7d626812732359d

Download Submit
memory/440-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/440-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/440-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/440-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3284-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3284-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3284-8-0x0000000000450000-0x0000000000463000-memory.dmp

Filesize
76KB

Download
memory/3284-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3284-1-0x0000000000470000-0x0000000000570000-memory.dmp

Filesize
1024KB

Download
memory/3284-2-0x0000000000450000-0x0000000000463000-memory.dmp

Filesize
76KB

Download
memory/4452-17-0x0000000000A70000-0x0000000000A85000-memory.dmp

Filesize
84KB

Download
memory/4452-16-0x0000000000A70000-0x0000000000A85000-memory.dmp

Filesize
84KB

Download
memory/4452-14-0x0000000000A70000-0x0000000000A85000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads