tofsee | 3a0c68d2618cba30b54820dd43efae83e393c81c52a84fb1c4a744e7f82120ec

General

Target

20240903c3f72bad2615b1edf087c4127b22e474mafia.exe
Size

12.4MB
MD5

c3f72bad2615b1edf087c4127b22e474
SHA1

27dcaad1b3860f3a972493397842fb6cf9eff190
SHA256

3a0c68d2618cba30b54820dd43efae83e393c81c52a84fb1c4a744e7f82120ec
SHA512

72e1f9191b874d6e2ef3d36443ea94ae8219c0a9e3dbc364276f62aaf3b3f562f5a2444226be42dae3dab7f9dfa1621e091e7405bec013964bbc7d8eb4d0ce73
SSDEEP

6144:n+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:n+r1IeSXMXc7LlxWV4Ug97GZ+ej

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
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
4636	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\odjnrra\ImagePath = "C:\\Windows\\SysWOW64\\odjnrra\\rqcydnxk.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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe

Deletes itself 1 IoCs

pid	Process
5040	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1624	rqcydnxk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1624 set thread context of 5040	1624	rqcydnxk.exe	109

Launches sc.exe 3 IoCs

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

pid	Process
780	sc.exe
532	sc.exe
1864	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rqcydnxk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2728 wrote to memory of 2660	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	93
PID 2728 wrote to memory of 2660	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	93
PID 2728 wrote to memory of 2660	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	93
PID 2728 wrote to memory of 3012	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	95
PID 2728 wrote to memory of 3012	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	95
PID 2728 wrote to memory of 3012	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	95
PID 2728 wrote to memory of 780	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	97
PID 2728 wrote to memory of 780	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	97
PID 2728 wrote to memory of 780	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	97
PID 2728 wrote to memory of 532	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	99
PID 2728 wrote to memory of 532	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	99
PID 2728 wrote to memory of 532	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	99
PID 2728 wrote to memory of 1864	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	101
PID 2728 wrote to memory of 1864	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	101
PID 2728 wrote to memory of 1864	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	101
PID 2728 wrote to memory of 4636	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	106
PID 2728 wrote to memory of 4636	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	106
PID 2728 wrote to memory of 4636	2728	20240903c3f72bad2615b1edf087c4127b22e474mafia.exe	106
PID 1624 wrote to memory of 5040	1624	rqcydnxk.exe	109
PID 1624 wrote to memory of 5040	1624	rqcydnxk.exe	109
PID 1624 wrote to memory of 5040	1624	rqcydnxk.exe	109
PID 1624 wrote to memory of 5040	1624	rqcydnxk.exe	109
PID 1624 wrote to memory of 5040	1624	rqcydnxk.exe	109

C:\Users\Admin\AppData\Local\Temp\20240903c3f72bad2615b1edf087c4127b22e474mafia.exe
"C:\Users\Admin\AppData\Local\Temp\20240903c3f72bad2615b1edf087c4127b22e474mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\odjnrra\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2660
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rqcydnxk.exe" C:\Windows\SysWOW64\odjnrra\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create odjnrra binPath= "C:\Windows\SysWOW64\odjnrra\rqcydnxk.exe /d\"C:\Users\Admin\AppData\Local\Temp\20240903c3f72bad2615b1edf087c4127b22e474mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description odjnrra "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:532
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start odjnrra
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1864
- 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:4636

C:\Windows\SysWOW64\odjnrra\rqcydnxk.exe
C:\Windows\SysWOW64\odjnrra\rqcydnxk.exe /d"C:\Users\Admin\AppData\Local\Temp\20240903c3f72bad2615b1edf087c4127b22e474mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1624
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5040

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4340,i,8293235976513689021,7261015831736501466,262144 --variations-seed-version --mojo-platform-channel-handle=1904 /prefetch:8
1⤵
PID:2464

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\rqcydnxk.exe

Filesize
11.2MB

MD5
b53d7c5b3f8c1183033db243e3856e73

SHA1
2c91b4e3ca0da53e60d89bd56e61023f1a17fe83

SHA256
53fb34864427c5bc14b7f0552f301ebdcd95268e4bc33de4421f10d84f0e0476

SHA512
438ac14cdab4bc5e72b60cf4d193b8828bf0207c381c20166d76c529c0fd5b370a6b45f2707d457c2127924b3b3908879ac765d5ab45c72ed2001091359f341e

Download Submit
memory/1624-9-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/1624-10-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/1624-14-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2728-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/2728-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2728-7-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2728-6-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/5040-13-0x0000000000F40000-0x0000000000F55000-memory.dmp

Filesize
84KB

Download
memory/5040-11-0x0000000000F40000-0x0000000000F55000-memory.dmp

Filesize
84KB

Download
memory/5040-15-0x0000000000F40000-0x0000000000F55000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads