tofsee | 7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d

General

Target

7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe
Size

11.2MB
MD5

dc95cb1290fa14086d6e54605ef163e4
SHA1

e38ae542e1c56fc2db4e3976c86af29faf48293a
SHA256

7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d
SHA512

7009d924341b95beb3fb709b6895a44364fa6f9f1f2ce019ce972cdad24870e09abc6e08064e5478a10b21253bf7126b15bab8be3eee0ef37c7ad29ccc64955a
SSDEEP

1536:CpUJsMq8nDNrnUtDDqJ55fNBVcmiCxmeZUUfOxxjDRvgdi0/zvjHNq8wR4vyKT:O6nln1X17rpLfOz3t8Fbti4v

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

103.248.137.133

59.188.74.26

115.230.124.76

111.121.193.242

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
3016	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\dwndznva\ImagePath = "C:\\Windows\\SysWOW64\\dwndznva\\scpmzjmk.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-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe

Deletes itself 1 IoCs

pid	Process
3100	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1868	scpmzjmk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1868 set thread context of 3100	1868	scpmzjmk.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
1336	sc.exe
8	sc.exe
3028	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	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	scpmzjmk.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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 636	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	84
PID 2924 wrote to memory of 636	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	84
PID 2924 wrote to memory of 636	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	84
PID 2924 wrote to memory of 5084	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	86
PID 2924 wrote to memory of 5084	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	86
PID 2924 wrote to memory of 5084	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	86
PID 2924 wrote to memory of 3028	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	88
PID 2924 wrote to memory of 3028	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	88
PID 2924 wrote to memory of 3028	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	88
PID 2924 wrote to memory of 1336	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	90
PID 2924 wrote to memory of 1336	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	90
PID 2924 wrote to memory of 1336	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	90
PID 2924 wrote to memory of 8	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	92
PID 2924 wrote to memory of 8	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	92
PID 2924 wrote to memory of 8	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	92
PID 2924 wrote to memory of 3016	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	95
PID 2924 wrote to memory of 3016	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	95
PID 2924 wrote to memory of 3016	2924	7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe	95
PID 1868 wrote to memory of 3100	1868	scpmzjmk.exe	97
PID 1868 wrote to memory of 3100	1868	scpmzjmk.exe	97
PID 1868 wrote to memory of 3100	1868	scpmzjmk.exe	97
PID 1868 wrote to memory of 3100	1868	scpmzjmk.exe	97
PID 1868 wrote to memory of 3100	1868	scpmzjmk.exe	97

C:\Users\Admin\AppData\Local\Temp\7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe
"C:\Users\Admin\AppData\Local\Temp\7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2924
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dwndznva\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:636
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\scpmzjmk.exe" C:\Windows\SysWOW64\dwndznva\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5084
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dwndznva binPath= "C:\Windows\SysWOW64\dwndznva\scpmzjmk.exe /d\"C:\Users\Admin\AppData\Local\Temp\7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe\"" type= own start= auto DisplayName= "P2P Support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dwndznva "Internet Mobile Support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1336
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dwndznva
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:8
- 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:3016

C:\Windows\SysWOW64\dwndznva\scpmzjmk.exe
C:\Windows\SysWOW64\dwndznva\scpmzjmk.exe /d"C:\Users\Admin\AppData\Local\Temp\7d33c7099e8696a3c06361ee3d4da8c45461cd3fdb6fe354d81be76fe5d8625d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1868
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3100

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\scpmzjmk.exe

Filesize
13.7MB

MD5
e6052b33579df229ce23187c45f31986

SHA1
db1763520889c78688e683eb597771d956347363

SHA256
5e22698b57131656ca66ff3ae07d263fe654838593a48d15fd714432a331bb98

SHA512
a0e90e3fa5b735b46c6733d0786f8a0b92e6fe09d5e48f8585f0c7481edc1641032233f08344655c43893b0ab0a4680485376085b01d5250f2ceeafddd2954e4

Download Submit
memory/1868-7-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/1868-13-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2924-0-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2924-1-0x00000000009D0000-0x00000000009D1000-memory.dmp

Filesize
4KB

Download
memory/2924-3-0x00000000024D0000-0x00000000024D1000-memory.dmp

Filesize
4KB

Download
memory/2924-2-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/2924-9-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/3100-11-0x00000000003B0000-0x00000000003C6000-memory.dmp

Filesize
88KB

Download
memory/3100-15-0x00000000003B0000-0x00000000003C6000-memory.dmp

Filesize
88KB

Download
memory/3100-16-0x00000000003B0000-0x00000000003C6000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads