tofsee | 0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad

General

Target

0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe
Size

12.1MB
MD5

303f6e51c43fac701d5f42ef5bf75390
SHA1

8579db92117e98aab6ea6c8386044b9dac29f751
SHA256

0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad
SHA512

0ef6f8304325be021264f08f7458dc7ef01c65ab8ee9b64455a27af47bbff9177648e5b6c4c2bb1d29e42205ff20987836ec32ffd23f5fd4c22bd4570e57689d
SSDEEP

6144:vZDhTWrhgUaxjFftGu35QZ+2PPFGrGuislc03r:vZDhTWrhgUWFfMuP0FGqb/0

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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
2428	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\twddflei\ImagePath = "C:\\Windows\\SysWOW64\\twddflei\\nqjrprzj.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe

Deletes itself 1 IoCs

pid	Process
5012	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1212	nqjrprzj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1212 set thread context of 5012	1212	nqjrprzj.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2108	sc.exe
4752	sc.exe
3712	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
3084	3412	WerFault.exe	82
5068	1212	WerFault.exe	93

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	sc.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nqjrprzj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3412 wrote to memory of 2692	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	83
PID 3412 wrote to memory of 2692	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	83
PID 3412 wrote to memory of 2692	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	83
PID 3412 wrote to memory of 4396	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	85
PID 3412 wrote to memory of 4396	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	85
PID 3412 wrote to memory of 4396	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	85
PID 3412 wrote to memory of 2108	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	87
PID 3412 wrote to memory of 2108	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	87
PID 3412 wrote to memory of 2108	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	87
PID 3412 wrote to memory of 4752	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	89
PID 3412 wrote to memory of 4752	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	89
PID 3412 wrote to memory of 4752	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	89
PID 3412 wrote to memory of 3712	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	91
PID 3412 wrote to memory of 3712	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	91
PID 3412 wrote to memory of 3712	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	91
PID 3412 wrote to memory of 2428	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	94
PID 3412 wrote to memory of 2428	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	94
PID 3412 wrote to memory of 2428	3412	0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe	94
PID 1212 wrote to memory of 5012	1212	nqjrprzj.exe	100
PID 1212 wrote to memory of 5012	1212	nqjrprzj.exe	100
PID 1212 wrote to memory of 5012	1212	nqjrprzj.exe	100
PID 1212 wrote to memory of 5012	1212	nqjrprzj.exe	100
PID 1212 wrote to memory of 5012	1212	nqjrprzj.exe	100

C:\Users\Admin\AppData\Local\Temp\0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe
"C:\Users\Admin\AppData\Local\Temp\0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3412
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\twddflei\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nqjrprzj.exe" C:\Windows\SysWOW64\twddflei\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create twddflei binPath= "C:\Windows\SysWOW64\twddflei\nqjrprzj.exe /d\"C:\Users\Admin\AppData\Local\Temp\0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2108
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description twddflei "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start twddflei
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3712
- 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:2428
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3412 -s 1216
  2⤵
  - Program crash
  PID:3084

C:\Windows\SysWOW64\twddflei\nqjrprzj.exe
C:\Windows\SysWOW64\twddflei\nqjrprzj.exe /d"C:\Users\Admin\AppData\Local\Temp\0877a5f9da479c4c01f7773e9a37c88df7313447330fe2fe17f745fa496cccad.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1212
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5012
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1212 -s 520
  2⤵
  - Program crash
  PID:5068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3412 -ip 3412
1⤵
PID:2340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1212 -ip 1212
1⤵
PID:2368

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\nqjrprzj.exe

Filesize
12.1MB

MD5
1b6184a826aa367c2a9f8805e1a1cd49

SHA1
014dd0231a7b6f7f86a84a7471cf247152ecdb3a

SHA256
b7d93d8964fcfef7620dfd274d6eb88033bf7507db3abb5a4198dc0bd3dc5c95

SHA512
c30ac5db27d6de45b47a4a24bb38c1f8b3e4791cc2e5728195fbe521a6e176f4a8e2cdadada9b0b8e2f0c3ef105f78c9e92e1b59967d64aa70e9b785cbeff66e

Download Submit
memory/1212-11-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/1212-17-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/1212-15-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/3412-8-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/3412-9-0x0000000000CD0000-0x0000000000CE3000-memory.dmp

Filesize
76KB

Download
memory/3412-1-0x0000000000880000-0x0000000000980000-memory.dmp

Filesize
1024KB

Download
memory/3412-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3412-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3412-2-0x0000000000CD0000-0x0000000000CE3000-memory.dmp

Filesize
76KB

Download
memory/5012-14-0x0000000000260000-0x0000000000275000-memory.dmp

Filesize
84KB

Download
memory/5012-12-0x0000000000260000-0x0000000000275000-memory.dmp

Filesize
84KB

Download
memory/5012-16-0x0000000000260000-0x0000000000275000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads