tofsee | ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f

General

Target

ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe
Size

291KB
MD5

2a19f07c0c822efed923fccc2fbfd3ee
SHA1

21892b14eae94d9efc116d4c26179ea7259736e7
SHA256

ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f
SHA512

421190d41cc983b0e7de72b8e60460dbb9ad8b67341b17a711738befa8a443e19aee0c982d7541ae1a3265dd0f86203ab1287f48320bc0b95be06a100a1be682
SSDEEP

6144:WHWNUXjubm55cP8kiqiSXuZet0ySbrH9my8p36f:6XV68kBiSXuZet0ySbrf8p3W

Score

10^/10

tofsee discovery evasion 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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3468	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\heqzbchf\ImagePath = "C:\\Windows\\SysWOW64\\heqzbchf\\uzjzns.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	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe

Deletes itself 1 IoCs

pid	Process
5088	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1564	uzjzns.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1564 set thread context of 5088	1564	uzjzns.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3356	sc.exe
3588	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 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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3324	3416	WerFault.exe	84
1664	1564	WerFault.exe	95

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uzjzns.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3416 wrote to memory of 3556	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	85
PID 3416 wrote to memory of 3556	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	85
PID 3416 wrote to memory of 3556	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	85
PID 3416 wrote to memory of 396	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	87
PID 3416 wrote to memory of 396	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	87
PID 3416 wrote to memory of 396	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	87
PID 3416 wrote to memory of 3356	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	89
PID 3416 wrote to memory of 3356	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	89
PID 3416 wrote to memory of 3356	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	89
PID 3416 wrote to memory of 3588	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	91
PID 3416 wrote to memory of 3588	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	91
PID 3416 wrote to memory of 3588	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	91
PID 3416 wrote to memory of 4952	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	93
PID 3416 wrote to memory of 4952	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	93
PID 3416 wrote to memory of 4952	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	93
PID 3416 wrote to memory of 3468	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	96
PID 3416 wrote to memory of 3468	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	96
PID 3416 wrote to memory of 3468	3416	ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe	96
PID 1564 wrote to memory of 5088	1564	uzjzns.exe	102
PID 1564 wrote to memory of 5088	1564	uzjzns.exe	102
PID 1564 wrote to memory of 5088	1564	uzjzns.exe	102
PID 1564 wrote to memory of 5088	1564	uzjzns.exe	102
PID 1564 wrote to memory of 5088	1564	uzjzns.exe	102

C:\Users\Admin\AppData\Local\Temp\ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe
"C:\Users\Admin\AppData\Local\Temp\ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3416
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\heqzbchf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uzjzns.exe" C:\Windows\SysWOW64\heqzbchf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create heqzbchf binPath= "C:\Windows\SysWOW64\heqzbchf\uzjzns.exe /d\"C:\Users\Admin\AppData\Local\Temp\ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3356
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description heqzbchf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start heqzbchf
  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:3468
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3416 -s 1040
  2⤵
  - Program crash
  PID:3324

C:\Windows\SysWOW64\heqzbchf\uzjzns.exe
C:\Windows\SysWOW64\heqzbchf\uzjzns.exe /d"C:\Users\Admin\AppData\Local\Temp\ebc9363be598521bca4653506ed233ea8f7a52a0c7ed4a121130bbc1a1f27e2f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1564
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5088
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1564 -s 512
  2⤵
  - Program crash
  PID:1664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3416 -ip 3416
1⤵
PID:2452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1564 -ip 1564
1⤵
PID:3860

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\uzjzns.exe

Filesize
11.5MB

MD5
4b573bca611774eabb17601c03778ee3

SHA1
15c03068639a1422256faeea639780c15afc27b1

SHA256
635d0b58706c778a9e48d114659981a96ccd83ec59d86f801416741be02fe0d1

SHA512
7a13d5ee95c221ae386e0730c43830248fbd47faa034ba781c0358a8925316750e1fd77749f98a7ac4a178cbf9a41b65f6082fe4149a2d81198e96ecd1e0fc83

Download Submit
memory/1564-15-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download
memory/3416-2-0x00000000048B0000-0x00000000048C3000-memory.dmp

Filesize
76KB

Download
memory/3416-1-0x0000000002D70000-0x0000000002E70000-memory.dmp

Filesize
1024KB

Download
memory/3416-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3416-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3416-8-0x00000000048B0000-0x00000000048C3000-memory.dmp

Filesize
76KB

Download
memory/3416-7-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download
memory/5088-11-0x0000000001270000-0x0000000001285000-memory.dmp

Filesize
84KB

Download
memory/5088-13-0x0000000001270000-0x0000000001285000-memory.dmp

Filesize
84KB

Download
memory/5088-14-0x0000000001270000-0x0000000001285000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads