tofsee | 295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627

General

Target

295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe
Size

71KB
MD5

70f1e7a328be9195b2f73a10de1ca4b9
SHA1

2fb0843ffd6852ab931958ae6d9375a833f1e441
SHA256

295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627
SHA512

1f006ac611ae1130b6f245a51bacfcfb58f5cd01385ca4561d8817eb951daf3312a05fa3966f4598d940b11276a7f7f3a8adeec359978ed43f16179643a9fd4d
SSDEEP

1536:Dk3s21VCAe/TxSYS+q4TjFWL9JdpIAUc:DmVCAExSYHq4FApIb

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.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
2520	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\qlvbnbbl\ImagePath = "C:\\Windows\\SysWOW64\\qlvbnbbl\\yvgljtqn.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe

Deletes itself 1 IoCs

pid	Process
836	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2016	yvgljtqn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2016 set thread context of 836	2016	yvgljtqn.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
772	sc.exe
4152	sc.exe
3688	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

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	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.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	svchost.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	yvgljtqn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3696 wrote to memory of 1508	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	84
PID 3696 wrote to memory of 1508	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	84
PID 3696 wrote to memory of 1508	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	84
PID 3696 wrote to memory of 1156	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	86
PID 3696 wrote to memory of 1156	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	86
PID 3696 wrote to memory of 1156	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	86
PID 3696 wrote to memory of 772	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	88
PID 3696 wrote to memory of 772	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	88
PID 3696 wrote to memory of 772	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	88
PID 3696 wrote to memory of 4152	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	90
PID 3696 wrote to memory of 4152	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	90
PID 3696 wrote to memory of 4152	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	90
PID 3696 wrote to memory of 3688	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	92
PID 3696 wrote to memory of 3688	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	92
PID 3696 wrote to memory of 3688	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	92
PID 2016 wrote to memory of 836	2016	yvgljtqn.exe	95
PID 2016 wrote to memory of 836	2016	yvgljtqn.exe	95
PID 2016 wrote to memory of 836	2016	yvgljtqn.exe	95
PID 2016 wrote to memory of 836	2016	yvgljtqn.exe	95
PID 2016 wrote to memory of 836	2016	yvgljtqn.exe	95
PID 3696 wrote to memory of 2520	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	96
PID 3696 wrote to memory of 2520	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	96
PID 3696 wrote to memory of 2520	3696	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	96

C:\Users\Admin\AppData\Local\Temp\295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe
"C:\Users\Admin\AppData\Local\Temp\295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qlvbnbbl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1508
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yvgljtqn.exe" C:\Windows\SysWOW64\qlvbnbbl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1156
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qlvbnbbl binPath= "C:\Windows\SysWOW64\qlvbnbbl\yvgljtqn.exe /d\"C:\Users\Admin\AppData\Local\Temp\295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:772
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qlvbnbbl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4152
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qlvbnbbl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3688
- 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:2520

C:\Windows\SysWOW64\qlvbnbbl\yvgljtqn.exe
C:\Windows\SysWOW64\qlvbnbbl\yvgljtqn.exe /d"C:\Users\Admin\AppData\Local\Temp\295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:836

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\yvgljtqn.exe

Filesize
12.2MB

MD5
727af143c21b565e7c9cb34feb36ed07

SHA1
7f94ae3855a341ca77f222aa6ec52db2c4cc7527

SHA256
1228ac1829cf38f5a1a34926e354d076ec643b280216ffb428c1963c551862d8

SHA512
ee814360bf0a38dcdd2fa0b27ff3f725d3868655562a9ef336f55e820cefc49caae3fbac6a735f4d6f49d96732225cc2ece2ec5a3fa999f8f3b05de28aa24cd6

Download Submit
memory/836-3-0x0000000000E80000-0x0000000000E95000-memory.dmp

Filesize
84KB

Download
memory/836-6-0x0000000000E80000-0x0000000000E95000-memory.dmp

Filesize
84KB

Download
memory/836-7-0x0000000000E80000-0x0000000000E95000-memory.dmp

Filesize
84KB

Download
memory/836-8-0x0000000000E80000-0x0000000000E95000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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