tofsee | 588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c

General

Target

588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe
Size

12.6MB
MD5

0c4b956df94e7fa77967043428ee105d
SHA1

7ec22983461cd45e2fba80b561b9006fd5e012be
SHA256

588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c
SHA512

1d0b850ec7273459e454b24ca3ead47d36a270762cc7a348f15df73b63d31390f795e9283e84b401148515ad2404e53993221fee92cf4ca0cd851638e054b18e
SSDEEP

393216:fH2222222222222222222222222222222222222222222222222222222222222h:v222222222222222222222222222222G

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.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
2728	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\eyakvpsa\ImagePath = "C:\\Windows\\SysWOW64\\eyakvpsa\\igpqzvkg.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe

Deletes itself 1 IoCs

pid	Process
3184	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2400	igpqzvkg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2400 set thread context of 3184	2400	igpqzvkg.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
3460	sc.exe
5092	sc.exe
5040	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
2388	4280	WerFault.exe	82
4712	2400	WerFault.exe	96

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	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	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	igpqzvkg.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4280 wrote to memory of 4772	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	83
PID 4280 wrote to memory of 4772	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	83
PID 4280 wrote to memory of 4772	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	83
PID 4280 wrote to memory of 824	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	85
PID 4280 wrote to memory of 824	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	85
PID 4280 wrote to memory of 824	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	85
PID 4280 wrote to memory of 3460	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	87
PID 4280 wrote to memory of 3460	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	87
PID 4280 wrote to memory of 3460	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	87
PID 4280 wrote to memory of 5092	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	89
PID 4280 wrote to memory of 5092	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	89
PID 4280 wrote to memory of 5092	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	89
PID 4280 wrote to memory of 5040	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	94
PID 4280 wrote to memory of 5040	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	94
PID 4280 wrote to memory of 5040	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	94
PID 2400 wrote to memory of 3184	2400	igpqzvkg.exe	97
PID 2400 wrote to memory of 3184	2400	igpqzvkg.exe	97
PID 2400 wrote to memory of 3184	2400	igpqzvkg.exe	97
PID 2400 wrote to memory of 3184	2400	igpqzvkg.exe	97
PID 2400 wrote to memory of 3184	2400	igpqzvkg.exe	97
PID 4280 wrote to memory of 2728	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	101
PID 4280 wrote to memory of 2728	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	101
PID 4280 wrote to memory of 2728	4280	588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe	101

C:\Users\Admin\AppData\Local\Temp\588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe
"C:\Users\Admin\AppData\Local\Temp\588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4280
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eyakvpsa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\igpqzvkg.exe" C:\Windows\SysWOW64\eyakvpsa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eyakvpsa binPath= "C:\Windows\SysWOW64\eyakvpsa\igpqzvkg.exe /d\"C:\Users\Admin\AppData\Local\Temp\588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3460
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eyakvpsa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5092
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eyakvpsa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5040
- 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:2728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4280 -s 800
  2⤵
  - Program crash
  PID:2388

C:\Windows\SysWOW64\eyakvpsa\igpqzvkg.exe
C:\Windows\SysWOW64\eyakvpsa\igpqzvkg.exe /d"C:\Users\Admin\AppData\Local\Temp\588e82d016cf820981a0ff1bc1063ebdacc6918051d5855756d4f141ebc9f48c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3184
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2400 -s 520
  2⤵
  - Program crash
  PID:4712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2400 -ip 2400
1⤵
PID:4500

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4280 -ip 4280
1⤵
PID:2916

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\igpqzvkg.exe

Filesize
13.2MB

MD5
3bcefe6763cf43066c3c22b429b3954d

SHA1
11d3a1179b3e7b82184881d17ca1c7ba1cdb7a10

SHA256
4b919c85d612a6561db2c43fbfee2cbac2df121956a854a0c9a4a1d26af72dbf

SHA512
bb5021743f34a155e0aa7678498c7dd6113e3942b198883ae06d9db28d051e840acd6ac45cb0e70a248401622d2a7c2e54c64105cea604adcdab5a660ad71397

Download Submit
memory/2400-8-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2400-15-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/2400-9-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/3184-10-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/3184-13-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/3184-19-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/3184-20-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/3184-21-0x00000000006C0000-0x00000000006D5000-memory.dmp

Filesize
84KB

Download
memory/4280-1-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download
memory/4280-2-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/4280-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4280-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4280-17-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/4280-16-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads