tofsee | aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7

General

Target

aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe
Size

13.7MB
MD5

230a0f7a92817287a65dedd374a65de1
SHA1

1ae84ba5933c65e5bfd2b65841f3e0088ee9f441
SHA256

aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7
SHA512

9075bc4925db24a6abbd2d42b427208b19f2fadd652d816f99a811f10164123235bf66eabb6ea5595646ef31564963f8fc1459fe4322b73aa2e40e11df9cf1b3
SSDEEP

12288:vk6XHDS5TD26H7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7ZF:xXj

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

patmushta.info

ovicrush.cn

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
1848	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\eiwetvoz\ImagePath = "C:\\Windows\\SysWOW64\\eiwetvoz\\ullmjaws.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe

Deletes itself 1 IoCs

pid	Process
1236	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1144	ullmjaws.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1144 set thread context of 1236	1144	ullmjaws.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
1240	sc.exe
1372	sc.exe
4432	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	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.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	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	ullmjaws.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3564 wrote to memory of 2072	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	82
PID 3564 wrote to memory of 2072	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	82
PID 3564 wrote to memory of 2072	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	82
PID 3564 wrote to memory of 548	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	84
PID 3564 wrote to memory of 548	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	84
PID 3564 wrote to memory of 548	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	84
PID 3564 wrote to memory of 1240	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	86
PID 3564 wrote to memory of 1240	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	86
PID 3564 wrote to memory of 1240	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	86
PID 3564 wrote to memory of 1372	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	88
PID 3564 wrote to memory of 1372	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	88
PID 3564 wrote to memory of 1372	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	88
PID 3564 wrote to memory of 4432	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	90
PID 3564 wrote to memory of 4432	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	90
PID 3564 wrote to memory of 4432	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	90
PID 3564 wrote to memory of 1848	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	93
PID 3564 wrote to memory of 1848	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	93
PID 3564 wrote to memory of 1848	3564	aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe	93
PID 1144 wrote to memory of 1236	1144	ullmjaws.exe	95
PID 1144 wrote to memory of 1236	1144	ullmjaws.exe	95
PID 1144 wrote to memory of 1236	1144	ullmjaws.exe	95
PID 1144 wrote to memory of 1236	1144	ullmjaws.exe	95
PID 1144 wrote to memory of 1236	1144	ullmjaws.exe	95

C:\Users\Admin\AppData\Local\Temp\aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe
"C:\Users\Admin\AppData\Local\Temp\aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3564
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eiwetvoz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2072
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ullmjaws.exe" C:\Windows\SysWOW64\eiwetvoz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eiwetvoz binPath= "C:\Windows\SysWOW64\eiwetvoz\ullmjaws.exe /d\"C:\Users\Admin\AppData\Local\Temp\aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1240
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eiwetvoz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1372
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eiwetvoz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4432
- 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:1848

C:\Windows\SysWOW64\eiwetvoz\ullmjaws.exe
C:\Windows\SysWOW64\eiwetvoz\ullmjaws.exe /d"C:\Users\Admin\AppData\Local\Temp\aee866c403304b93df8b255fb452ec1a25b9115bc8357489e42a2498b065d6e7.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1144
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1236

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\ullmjaws.exe

Filesize
14.8MB

MD5
564d324e400eb08d50d5260e608daace

SHA1
058a668ec946618cc47258a82bd64ece44923428

SHA256
ef584ece4829ac82cb757b98dc2b0f8f95a361eab032e120d1f24bee9abc2068

SHA512
4b671369682f4ec24ee3d10bd5934dce4876cc9f5709dfb72e2f6f0ca157e0e2fe44e395579eba6dcf2244bc1a9a1842c80c6582f37eab3e709c06e1604478c3

Download Submit
memory/1144-10-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1144-11-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1144-15-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1144-12-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/1236-13-0x0000000000E40000-0x0000000000E55000-memory.dmp

Filesize
84KB

Download
memory/1236-17-0x0000000000E40000-0x0000000000E55000-memory.dmp

Filesize
84KB

Download
memory/1236-18-0x0000000000E40000-0x0000000000E55000-memory.dmp

Filesize
84KB

Download
memory/3564-7-0x00000000001C0000-0x00000000001CD000-memory.dmp

Filesize
52KB

Download
memory/3564-6-0x0000000000400000-0x0000000000457000-memory.dmp

Filesize
348KB

Download
memory/3564-8-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download
memory/3564-0-0x00000000001C0000-0x00000000001CD000-memory.dmp

Filesize
52KB

Download
memory/3564-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3564-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3564-1-0x00000000001D0000-0x00000000001E3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads