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
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
1000	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\ulywrqbl\ImagePath = "C:\\Windows\\SysWOW64\\ulywrqbl\\glvlze.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe

Deletes itself 1 IoCs

pid	Process
5092	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2140	glvlze.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2140 set thread context of 5092	2140	glvlze.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1736	sc.exe
4064	sc.exe
4992	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
3304	3124	WerFault.exe	81
3772	2140	WerFault.exe	94

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	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.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	glvlze.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3124 wrote to memory of 3748	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	82
PID 3124 wrote to memory of 3748	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	82
PID 3124 wrote to memory of 3748	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	82
PID 3124 wrote to memory of 3780	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	84
PID 3124 wrote to memory of 3780	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	84
PID 3124 wrote to memory of 3780	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	84
PID 3124 wrote to memory of 1736	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	86
PID 3124 wrote to memory of 1736	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	86
PID 3124 wrote to memory of 1736	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	86
PID 3124 wrote to memory of 4064	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	88
PID 3124 wrote to memory of 4064	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	88
PID 3124 wrote to memory of 4064	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	88
PID 3124 wrote to memory of 4992	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	92
PID 3124 wrote to memory of 4992	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	92
PID 3124 wrote to memory of 4992	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	92
PID 3124 wrote to memory of 1000	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	95
PID 3124 wrote to memory of 1000	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	95
PID 3124 wrote to memory of 1000	3124	c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe	95
PID 2140 wrote to memory of 5092	2140	glvlze.exe	102
PID 2140 wrote to memory of 5092	2140	glvlze.exe	102
PID 2140 wrote to memory of 5092	2140	glvlze.exe	102
PID 2140 wrote to memory of 5092	2140	glvlze.exe	102
PID 2140 wrote to memory of 5092	2140	glvlze.exe	102

C:\Users\Admin\AppData\Local\Temp\c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe
"C:\Users\Admin\AppData\Local\Temp\c205b7fe1ffd71e1a00dbd175dde5352aa7e7e7c81754994c5ad0923e629d591.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3124
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ulywrqbl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3748
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\glvlze.exe" C:\Windows\SysWOW64\ulywrqbl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ulywrqbl binPath= "C:\Windows\SysWOW64\ulywrqbl\glvlze.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:1736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ulywrqbl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4064
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ulywrqbl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4992
- 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:1000
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3124 -s 1228
  2⤵
  - Program crash
  PID:3304

C:\Windows\SysWOW64\ulywrqbl\glvlze.exe
C:\Windows\SysWOW64\ulywrqbl\glvlze.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:2140
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5092
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2140 -s 520
  2⤵
  - Program crash
  PID:3772

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3124 -ip 3124
1⤵
PID:2776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2140 -ip 2140
1⤵
PID:1400

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\glvlze.exe

Filesize
11.5MB

MD5
e52dca96fbad245eaf16e49d9b9529d0

SHA1
0fe1ab69aecd51fe9559a2786f452348da3c5e40

SHA256
caca78f1065cb865893a5745913479a61425af4c224b6a082d58b34881fcaa1b

SHA512
61e900e7da60245feeae9571dfeb9e7a12b4c9a0d8415d5cd586a5a9d4db1094bc6dccd73eb8388646aed3d63e5719a5e1f323443d40f50afc1703ad54aa9211

Download Submit
memory/2140-14-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2140-11-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2140-13-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3124-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3124-1-0x0000000000950000-0x0000000000A50000-memory.dmp

Filesize
1024KB

Download
memory/3124-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3124-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3124-9-0x00000000008F0000-0x0000000000903000-memory.dmp

Filesize
76KB

Download
memory/3124-2-0x00000000008F0000-0x0000000000903000-memory.dmp

Filesize
76KB

Download
memory/5092-12-0x0000000000930000-0x0000000000945000-memory.dmp

Filesize
84KB

Download
memory/5092-16-0x0000000000930000-0x0000000000945000-memory.dmp

Filesize
84KB

Download
memory/5092-17-0x0000000000930000-0x0000000000945000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads