tofsee | 2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2

General

Target

2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe
Size

13.2MB
MD5

290911ada19cf5f4241acd5beadb4fa8
SHA1

0ba3021f83536da222ac06c3881e24e8ef5fc485
SHA256

2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2
SHA512

41b9faa33bddb614c547dd36b908c05cb14323b88ca26198ed8ea479f7656a89a95b8a38a9b32b24c2be8c6f9fd442f55845c52fb067fe546f7dc86c85cede2c
SSDEEP

49152:MIc6CLNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNX:1c6Cd

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
1964	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\umglwlnp\ImagePath = "C:\\Windows\\SysWOW64\\umglwlnp\\kjxznkld.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe

Deletes itself 1 IoCs

pid	Process
3108	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3420	kjxznkld.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3420 set thread context of 3108	3420	kjxznkld.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
1468	sc.exe
1340	sc.exe
5068	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3088	2988	WerFault.exe	81
4868	3420	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	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.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	kjxznkld.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 4744	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	82
PID 2988 wrote to memory of 4744	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	82
PID 2988 wrote to memory of 4744	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	82
PID 2988 wrote to memory of 3616	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	84
PID 2988 wrote to memory of 3616	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	84
PID 2988 wrote to memory of 3616	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	84
PID 2988 wrote to memory of 1468	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	86
PID 2988 wrote to memory of 1468	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	86
PID 2988 wrote to memory of 1468	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	86
PID 2988 wrote to memory of 1340	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	90
PID 2988 wrote to memory of 1340	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	90
PID 2988 wrote to memory of 1340	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	90
PID 2988 wrote to memory of 5068	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	92
PID 2988 wrote to memory of 5068	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	92
PID 2988 wrote to memory of 5068	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	92
PID 2988 wrote to memory of 1964	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	96
PID 2988 wrote to memory of 1964	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	96
PID 2988 wrote to memory of 1964	2988	2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe	96
PID 3420 wrote to memory of 3108	3420	kjxznkld.exe	102
PID 3420 wrote to memory of 3108	3420	kjxznkld.exe	102
PID 3420 wrote to memory of 3108	3420	kjxznkld.exe	102
PID 3420 wrote to memory of 3108	3420	kjxznkld.exe	102
PID 3420 wrote to memory of 3108	3420	kjxznkld.exe	102

C:\Users\Admin\AppData\Local\Temp\2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe
"C:\Users\Admin\AppData\Local\Temp\2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2988
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\umglwlnp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kjxznkld.exe" C:\Windows\SysWOW64\umglwlnp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3616
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create umglwlnp binPath= "C:\Windows\SysWOW64\umglwlnp\kjxznkld.exe /d\"C:\Users\Admin\AppData\Local\Temp\2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description umglwlnp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1340
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start umglwlnp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5068
- 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:1964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2988 -s 1216
  2⤵
  - Program crash
  PID:3088

C:\Windows\SysWOW64\umglwlnp\kjxznkld.exe
C:\Windows\SysWOW64\umglwlnp\kjxznkld.exe /d"C:\Users\Admin\AppData\Local\Temp\2b76348a2a85a684600ced4c9ebfe496bfcf46ff451c93d841b1c473fd03a7d2.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3108
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 552
  2⤵
  - Program crash
  PID:4868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2988 -ip 2988
1⤵
PID:1656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3420 -ip 3420
1⤵
PID:4480

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\kjxznkld.exe

Filesize
11.6MB

MD5
a698bf13717be2d2ae003708469ca3c5

SHA1
6484853fe31ddf57c077162f04e08c159e3341c6

SHA256
cd9846bb040af8f39694dfd39b38c969bc8c1365885d6ef2ed467d038a72967e

SHA512
f57fbfc09c8f5af4417c6fd1d15784ed4f51aa293333270a83e4583811ddb641106a6930fbb37251db2449bd9b3245d6c6bef5d07fcebbdbefd701f5f492f75d

Download Submit
memory/2988-2-0x0000000003010000-0x0000000003023000-memory.dmp

Filesize
76KB

Download
memory/2988-1-0x0000000002C00000-0x0000000002D00000-memory.dmp

Filesize
1024KB

Download
memory/2988-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2988-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2988-9-0x0000000003010000-0x0000000003023000-memory.dmp

Filesize
76KB

Download
memory/2988-8-0x0000000000400000-0x0000000002BAB000-memory.dmp

Filesize
39.7MB

Download
memory/3108-11-0x00000000010B0000-0x00000000010C5000-memory.dmp

Filesize
84KB

Download
memory/3108-13-0x00000000010B0000-0x00000000010C5000-memory.dmp

Filesize
84KB

Download
memory/3108-14-0x00000000010B0000-0x00000000010C5000-memory.dmp

Filesize
84KB

Download
memory/3420-15-0x0000000000400000-0x0000000002BAB000-memory.dmp

Filesize
39.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads