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
768	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\pcnpbfnf\ImagePath = "C:\\Windows\\SysWOW64\\pcnpbfnf\\askrqhsz.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe

Deletes itself 1 IoCs

pid	Process
212	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4204	askrqhsz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4204 set thread context of 212	4204	askrqhsz.exe	94

Launches sc.exe 3 IoCs

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

pid	Process
4968	sc.exe
3780	sc.exe
4116	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	askrqhsz.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	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	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1224 wrote to memory of 2420	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	83
PID 1224 wrote to memory of 2420	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	83
PID 1224 wrote to memory of 2420	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	83
PID 1224 wrote to memory of 1384	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	85
PID 1224 wrote to memory of 1384	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	85
PID 1224 wrote to memory of 1384	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	85
PID 1224 wrote to memory of 4116	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	87
PID 1224 wrote to memory of 4116	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	87
PID 1224 wrote to memory of 4116	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	87
PID 1224 wrote to memory of 4968	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	89
PID 1224 wrote to memory of 4968	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	89
PID 1224 wrote to memory of 4968	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	89
PID 1224 wrote to memory of 3780	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	91
PID 1224 wrote to memory of 3780	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	91
PID 1224 wrote to memory of 3780	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	91
PID 4204 wrote to memory of 212	4204	askrqhsz.exe	94
PID 4204 wrote to memory of 212	4204	askrqhsz.exe	94
PID 4204 wrote to memory of 212	4204	askrqhsz.exe	94
PID 4204 wrote to memory of 212	4204	askrqhsz.exe	94
PID 4204 wrote to memory of 212	4204	askrqhsz.exe	94
PID 1224 wrote to memory of 768	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	95
PID 1224 wrote to memory of 768	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	95
PID 1224 wrote to memory of 768	1224	295abf468b9fe0a935544ef8f1dd3048bb458395ec88011decd5f948ebaea627.exe	95

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:1224
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pcnpbfnf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2420
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\askrqhsz.exe" C:\Windows\SysWOW64\pcnpbfnf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1384
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pcnpbfnf binPath= "C:\Windows\SysWOW64\pcnpbfnf\askrqhsz.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:4116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pcnpbfnf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pcnpbfnf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3780
- 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:768

C:\Windows\SysWOW64\pcnpbfnf\askrqhsz.exe
C:\Windows\SysWOW64\pcnpbfnf\askrqhsz.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:4204
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:212

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\askrqhsz.exe

Filesize
12.3MB

MD5
aa679bab5077f1a90604b45cd90aa614

SHA1
234dc7faa3dc51581def23c23207e66d15414427

SHA256
44b2b2d6f20432766f8261bbdba12974d224f4e416168d3808492c53cdb22e23

SHA512
2699343bc1bbfc7ad95b312d62f510b2c7f84a82790513d8b23d9654f412c7f3697c6f0eed296e7ce936f833f5b9e616464ab24b7b7f9a9abbc1a86b21c8e0d0

Download Submit
memory/212-3-0x00000000010F0000-0x0000000001105000-memory.dmp

Filesize
84KB

Download
memory/212-6-0x00000000010F0000-0x0000000001105000-memory.dmp

Filesize
84KB

Download
memory/212-7-0x00000000010F0000-0x0000000001105000-memory.dmp

Filesize
84KB

Download
memory/212-8-0x00000000010F0000-0x0000000001105000-memory.dmp

Filesize
84KB

Download
memory/212-9-0x00000000010F0000-0x0000000001105000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads