tofsee | c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591

General

Target

c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe
Size

10.5MB
MD5

f437958a717001f8bb29ca023faf9bb7
SHA1

6771eacfab06f9290ca7276974e206316739e8bb
SHA256

c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591
SHA512

37b3ea8fe4ac0288611010d69da0556c105eb3a886c512d4047f70f335dee9ce4cf76d5eda46d627a0d2965a187aa6ce0f434c279d8c64db25b8b4dcc059c6ff
SSDEEP

12288:jnWdwQB3a1ZAXYlVR7jbMviJvK3SRL/R/R/R/R/R/R/R/R/R/R/R/R/R/R/R/R/D:jnWdFB3a1ZLlsviJv9

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\afbamiep = "0"	svchost.exe

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

Processes:

netsh.exe

pid process

2380 netsh.exe

pid	process
2380	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\afbamiep\ImagePath = "C:\\Windows\\SysWOW64\\afbamiep\\njyydkqh.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3016 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

njyydkqh.exe

pid process

2784 njyydkqh.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

njyydkqh.exe

description pid process target process

PID 2784 set thread context of 3016 2784 njyydkqh.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2140 sc.exe
1576 sc.exe
2864 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3016	svchost.exe

pid	process
2784	njyydkqh.exe

description	pid	process	target process
PID 2784 set thread context of 3016	2784	njyydkqh.exe	svchost.exe

pid	process
2140	sc.exe
1576	sc.exe
2864	sc.exe

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

Processes:

netsh.exe

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

Processes:

c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exesc.exenetsh.exesvchost.execmd.execmd.exesc.exesc.exenjyydkqh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	njyydkqh.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exenjyydkqh.exe

description	pid	process	target process
PID 3032 wrote to memory of 2104	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	cmd.exe
PID 3032 wrote to memory of 2104	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	cmd.exe
PID 3032 wrote to memory of 2104	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	cmd.exe
PID 3032 wrote to memory of 2104	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	cmd.exe
PID 3032 wrote to memory of 2560	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	cmd.exe
PID 3032 wrote to memory of 2560	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	cmd.exe
PID 3032 wrote to memory of 2560	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	cmd.exe
PID 3032 wrote to memory of 2560	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	cmd.exe
PID 3032 wrote to memory of 2140	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	sc.exe
PID 3032 wrote to memory of 2140	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	sc.exe
PID 3032 wrote to memory of 2140	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	sc.exe
PID 3032 wrote to memory of 2140	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	sc.exe
PID 3032 wrote to memory of 1576	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	sc.exe
PID 3032 wrote to memory of 1576	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	sc.exe
PID 3032 wrote to memory of 1576	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	sc.exe
PID 3032 wrote to memory of 1576	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	sc.exe
PID 3032 wrote to memory of 2864	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	sc.exe
PID 3032 wrote to memory of 2864	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	sc.exe
PID 3032 wrote to memory of 2864	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	sc.exe
PID 3032 wrote to memory of 2864	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	sc.exe
PID 3032 wrote to memory of 2380	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	netsh.exe
PID 3032 wrote to memory of 2380	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	netsh.exe
PID 3032 wrote to memory of 2380	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	netsh.exe
PID 3032 wrote to memory of 2380	3032	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	netsh.exe
PID 2784 wrote to memory of 3016	2784	njyydkqh.exe	svchost.exe
PID 2784 wrote to memory of 3016	2784	njyydkqh.exe	svchost.exe
PID 2784 wrote to memory of 3016	2784	njyydkqh.exe	svchost.exe
PID 2784 wrote to memory of 3016	2784	njyydkqh.exe	svchost.exe
PID 2784 wrote to memory of 3016	2784	njyydkqh.exe	svchost.exe
PID 2784 wrote to memory of 3016	2784	njyydkqh.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe
"C:\Users\Admin\AppData\Local\Temp\c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\afbamiep\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\njyydkqh.exe" C:\Windows\SysWOW64\afbamiep\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2560
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create afbamiep binPath= "C:\Windows\SysWOW64\afbamiep\njyydkqh.exe /d\"C:\Users\Admin\AppData\Local\Temp\c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2140
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description afbamiep "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1576
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start afbamiep
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2864
- 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:2380

C:\Windows\SysWOW64\afbamiep\njyydkqh.exe
C:\Windows\SysWOW64\afbamiep\njyydkqh.exe /d"C:\Users\Admin\AppData\Local\Temp\c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2784
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3016

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

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\njyydkqh.exe

Filesize
13.4MB

MD5
4443f8143291ee2acd6eea07f5ee0f8d

SHA1
2f77d3d75f023fb0cf82d88b7b25d669ed485f5b

SHA256
3b941cbebce2f29b20fc8d3de389e2422d73e6b88d53c8a4d5ac5b4c4663fec0

SHA512
b72edd67f8217fd3d0801fdb12972b303839c5a1ef704ef5c1aff511e576e335606b670f2f64708c7c998a00f72d097a6bb5d6e041fa2218c3622a199fb2e209

Download Submit
memory/2784-17-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3016-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3016-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3016-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3016-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3016-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/3032-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3032-1-0x0000000000820000-0x0000000000920000-memory.dmp

Filesize
1024KB

Download
memory/3032-4-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3032-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3032-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads