tofsee | 7810708f33c355028fb29b32b57474d12daf826b803b471756cb6800f32b7436

General

Target

2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe
Size

10.4MB
MD5

3514d0875438dd5682cfe14dd6cd95ec
SHA1

b69b0f81ffb4d8684e770e80746249042cf7756f
SHA256

7810708f33c355028fb29b32b57474d12daf826b803b471756cb6800f32b7436
SHA512

0387238e6e8c713beb521bd5d58d724d0abfa59e6da4f63483759c0f1799fb362e5b002429d0fd7b201841b6c725c004c339e4086268031997d3c2388e92a762
SSDEEP

49152:1Vdrl/8HAzGCbGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGn:1Vdrl/9zG

Score

10^/10

tofsee discovery evasion 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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3304	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\qrvklvfm\ImagePath = "C:\\Windows\\SysWOW64\\qrvklvfm\\yxjfkuer.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe

Deletes itself 1 IoCs

pid	Process
1616	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1348	yxjfkuer.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1348 set thread context of 1616	1348	yxjfkuer.exe	110

Launches sc.exe 3 IoCs

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

pid	Process
4896	sc.exe
4296	sc.exe
3588	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
4576	4916	WerFault.exe	83
5040	1348	WerFault.exe	101

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	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	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yxjfkuer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4916 wrote to memory of 1548	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	91
PID 4916 wrote to memory of 1548	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	91
PID 4916 wrote to memory of 1548	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	91
PID 4916 wrote to memory of 1200	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	93
PID 4916 wrote to memory of 1200	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	93
PID 4916 wrote to memory of 1200	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	93
PID 4916 wrote to memory of 4896	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	95
PID 4916 wrote to memory of 4896	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	95
PID 4916 wrote to memory of 4896	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	95
PID 4916 wrote to memory of 4296	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	97
PID 4916 wrote to memory of 4296	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	97
PID 4916 wrote to memory of 4296	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	97
PID 4916 wrote to memory of 3588	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	99
PID 4916 wrote to memory of 3588	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	99
PID 4916 wrote to memory of 3588	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	99
PID 4916 wrote to memory of 3304	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	104
PID 4916 wrote to memory of 3304	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	104
PID 4916 wrote to memory of 3304	4916	2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe	104
PID 1348 wrote to memory of 1616	1348	yxjfkuer.exe	110
PID 1348 wrote to memory of 1616	1348	yxjfkuer.exe	110
PID 1348 wrote to memory of 1616	1348	yxjfkuer.exe	110
PID 1348 wrote to memory of 1616	1348	yxjfkuer.exe	110
PID 1348 wrote to memory of 1616	1348	yxjfkuer.exe	110

C:\Users\Admin\AppData\Local\Temp\2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qrvklvfm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1548
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yxjfkuer.exe" C:\Windows\SysWOW64\qrvklvfm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1200
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qrvklvfm binPath= "C:\Windows\SysWOW64\qrvklvfm\yxjfkuer.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4896
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qrvklvfm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4296
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qrvklvfm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3588
- 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:3304
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4916 -s 772
  2⤵
  - Program crash
  PID:4576

C:\Windows\SysWOW64\qrvklvfm\yxjfkuer.exe
C:\Windows\SysWOW64\qrvklvfm\yxjfkuer.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-11-03_3514d0875438dd5682cfe14dd6cd95ec_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1348
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1348 -s 512
  2⤵
  - Program crash
  PID:5040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4916 -ip 4916
1⤵
PID:852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1348 -ip 1348
1⤵
PID:1764

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\yxjfkuer.exe

Filesize
12.0MB

MD5
703cc14b27b09f63a85cb186965c4b7e

SHA1
f1d5efe2c8eb046c85f862fd5fca5bd12702b85b

SHA256
e0896ac6fd60e03739dfab098e7f5e9fce52a2a6fb4197a1a91ac41b2ea10140

SHA512
e69147f7cf487b16f71d3d870ab0fa3e237c28402dad6ab5552598bcf1aae8214edb489423b1e736d0c49f860d0b085f8b28361dd3875441a9df63524a9aaff9

Download Submit
memory/1348-11-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/1348-19-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/1348-12-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/1348-13-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/1616-16-0x0000000000A00000-0x0000000000A15000-memory.dmp

Filesize
84KB

Download
memory/1616-14-0x0000000000A00000-0x0000000000A15000-memory.dmp

Filesize
84KB

Download
memory/1616-17-0x0000000000A00000-0x0000000000A15000-memory.dmp

Filesize
84KB

Download
memory/4916-7-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/4916-8-0x0000000002260000-0x0000000002273000-memory.dmp

Filesize
76KB

Download
memory/4916-1-0x00000000008B0000-0x00000000009B0000-memory.dmp

Filesize
1024KB

Download
memory/4916-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4916-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4916-2-0x0000000002260000-0x0000000002273000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads