tofsee | bbb64a5242eda8d4f5e4a1a4f7242e18f851af80472a63b88d84ff3b0e34f50b

General

Target

2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe
Size

13.7MB
MD5

2b3eb8c627dd2a792145fd7b6016a15b
SHA1

38a1ba7cb8220d0c52cc0d6fab5b90c1308cf590
SHA256

bbb64a5242eda8d4f5e4a1a4f7242e18f851af80472a63b88d84ff3b0e34f50b
SHA512

e55c4fcd6d2d7f54748489b04abcec77a2483541b6c7643b8b8dd316770e168dc85ed05fa9e101decc8561153edaa657551e82cd7fb04e14360922466b6cf8dc
SSDEEP

3072:4LBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:1OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
3208	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\ckmrjwyu\ImagePath = "C:\\Windows\\SysWOW64\\ckmrjwyu\\adjdsdou.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-1-5-21-2436272344-4274332273-444425594-1000\Control Panel\International\Geo\Nation	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe

Deletes itself 1 IoCs

pid	Process
1980	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3240	adjdsdou.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3240 set thread context of 1980	3240	adjdsdou.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
3112	sc.exe
760	sc.exe
4952	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
1508	4560	WerFault.exe	82
1940	3240	WerFault.exe	99

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	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	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.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	adjdsdou.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4560 wrote to memory of 116	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	89
PID 4560 wrote to memory of 116	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	89
PID 4560 wrote to memory of 116	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	89
PID 4560 wrote to memory of 1392	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	91
PID 4560 wrote to memory of 1392	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	91
PID 4560 wrote to memory of 1392	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	91
PID 4560 wrote to memory of 3112	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	93
PID 4560 wrote to memory of 3112	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	93
PID 4560 wrote to memory of 3112	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	93
PID 4560 wrote to memory of 760	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	95
PID 4560 wrote to memory of 760	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	95
PID 4560 wrote to memory of 760	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	95
PID 4560 wrote to memory of 4952	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	97
PID 4560 wrote to memory of 4952	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	97
PID 4560 wrote to memory of 4952	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	97
PID 4560 wrote to memory of 3208	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	100
PID 4560 wrote to memory of 3208	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	100
PID 4560 wrote to memory of 3208	4560	2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe	100
PID 3240 wrote to memory of 1980	3240	adjdsdou.exe	105
PID 3240 wrote to memory of 1980	3240	adjdsdou.exe	105
PID 3240 wrote to memory of 1980	3240	adjdsdou.exe	105
PID 3240 wrote to memory of 1980	3240	adjdsdou.exe	105
PID 3240 wrote to memory of 1980	3240	adjdsdou.exe	105

C:\Users\Admin\AppData\Local\Temp\2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4560
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ckmrjwyu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:116
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\adjdsdou.exe" C:\Windows\SysWOW64\ckmrjwyu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1392
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ckmrjwyu binPath= "C:\Windows\SysWOW64\ckmrjwyu\adjdsdou.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3112
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ckmrjwyu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ckmrjwyu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4952
- 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:3208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4560 -s 1240
  2⤵
  - Program crash
  PID:1508

C:\Windows\SysWOW64\ckmrjwyu\adjdsdou.exe
C:\Windows\SysWOW64\ckmrjwyu\adjdsdou.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_2b3eb8c627dd2a792145fd7b6016a15b_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3240
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1980
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3240 -s 512
  2⤵
  - Program crash
  PID:1940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4560 -ip 4560
1⤵
PID:2472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3240 -ip 3240
1⤵
PID:2324

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\adjdsdou.exe

Filesize
12.4MB

MD5
cfe362a77d9e209fcc14e0ec1d3d41c4

SHA1
46ef445a2451b71801e75698aae629a6fd23b71b

SHA256
eb1b2feb98b59beb0cd5075eac33337fa02a833b70bccd700c7ed03058064324

SHA512
795a15b7fc1075824b37440fa7e03cd475c7a1c48607f713b18ed1eb99c1d54199daaef7ea575eb70f13fa6b761cb45371ae6918feb3521cea0e7d4a99d11653

Download Submit
memory/1980-14-0x0000000000340000-0x0000000000355000-memory.dmp

Filesize
84KB

Download
memory/1980-16-0x0000000000340000-0x0000000000355000-memory.dmp

Filesize
84KB

Download
memory/1980-17-0x0000000000340000-0x0000000000355000-memory.dmp

Filesize
84KB

Download
memory/3240-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3240-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3240-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3240-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4560-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4560-2-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/4560-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4560-8-0x0000000000580000-0x0000000000593000-memory.dmp

Filesize
76KB

Download
memory/4560-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4560-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads