tofsee | b9c281efac7ae522f39d90a8304f29b440cdeae15c1eb53b8b1ede94f9dd19d8

General

Target

5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe
Size

263KB
MD5

5b73118f049b003bc2ba02bc0946d829
SHA1

75a8c8231ca59779f8a6ca3e2fe7d9859be5cf0e
SHA256

b9c281efac7ae522f39d90a8304f29b440cdeae15c1eb53b8b1ede94f9dd19d8
SHA512

2b68aba1d81d4d1764507a2dd1e23fa19f96e768ee03e158b95ca4120f73bfdcd5ac67ead2dacc7524f9d3b7bb12af2d3dbb24469f0b5964fb91706220cb98c8
SSDEEP

6144:tQYgph/0NobY70xfKTm9qOYrWkRALgbWMxC7:t1Kd0NobY70xqm9qOuRNWkC

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
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

3768 netsh.exe

pid	process
3768	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\lrwulspd\ImagePath = "C:\\Windows\\SysWOW64\\lrwulspd\\nzlttetb.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

Processes:

5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

5084 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

nzlttetb.exe

pid process

804 nzlttetb.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

nzlttetb.exe

description pid process target process

PID 804 set thread context of 5084 804 nzlttetb.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

3644 sc.exe
2908 sc.exe
4360 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
5084	svchost.exe

pid	process
804	nzlttetb.exe

description	pid	process	target process
PID 804 set thread context of 5084	804	nzlttetb.exe	svchost.exe

pid	process
3644	sc.exe
2908	sc.exe
4360	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

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

912 3460 WerFault.exe 5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe
3684 804 WerFault.exe nzlttetb.exe

pid	pid_target	process	target process
912	3460	WerFault.exe	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe
3684	804	WerFault.exe	nzlttetb.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:

nzlttetb.exesvchost.execmd.exesc.exesc.exenetsh.exe5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.execmd.exesc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nzlttetb.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	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	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.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

Processes:

5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exenzlttetb.exe

description	pid	process	target process
PID 3460 wrote to memory of 4616	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	cmd.exe
PID 3460 wrote to memory of 4616	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	cmd.exe
PID 3460 wrote to memory of 4616	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	cmd.exe
PID 3460 wrote to memory of 4532	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	cmd.exe
PID 3460 wrote to memory of 4532	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	cmd.exe
PID 3460 wrote to memory of 4532	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	cmd.exe
PID 3460 wrote to memory of 4360	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	sc.exe
PID 3460 wrote to memory of 4360	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	sc.exe
PID 3460 wrote to memory of 4360	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	sc.exe
PID 3460 wrote to memory of 3644	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	sc.exe
PID 3460 wrote to memory of 3644	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	sc.exe
PID 3460 wrote to memory of 3644	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	sc.exe
PID 3460 wrote to memory of 2908	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	sc.exe
PID 3460 wrote to memory of 2908	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	sc.exe
PID 3460 wrote to memory of 2908	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	sc.exe
PID 3460 wrote to memory of 3768	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	netsh.exe
PID 3460 wrote to memory of 3768	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	netsh.exe
PID 3460 wrote to memory of 3768	3460	5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe	netsh.exe
PID 804 wrote to memory of 5084	804	nzlttetb.exe	svchost.exe
PID 804 wrote to memory of 5084	804	nzlttetb.exe	svchost.exe
PID 804 wrote to memory of 5084	804	nzlttetb.exe	svchost.exe
PID 804 wrote to memory of 5084	804	nzlttetb.exe	svchost.exe
PID 804 wrote to memory of 5084	804	nzlttetb.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3460
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lrwulspd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nzlttetb.exe" C:\Windows\SysWOW64\lrwulspd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4532
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lrwulspd binPath= "C:\Windows\SysWOW64\lrwulspd\nzlttetb.exe /d\"C:\Users\Admin\AppData\Local\Temp\5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4360
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lrwulspd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3644
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lrwulspd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2908
- 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:3768
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3460 -s 660
  2⤵
  - Program crash
  PID:912

C:\Windows\SysWOW64\lrwulspd\nzlttetb.exe
C:\Windows\SysWOW64\lrwulspd\nzlttetb.exe /d"C:\Users\Admin\AppData\Local\Temp\5b73118f049b003bc2ba02bc0946d829_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:804
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 804 -s 512
  2⤵
  - Program crash
  PID:3684

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3460 -ip 3460
1⤵
PID:3120

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 804 -ip 804
1⤵
PID:1576

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\nzlttetb.exe

Filesize
13.7MB

MD5
e9f37ef98e78103df3414b2ec53a29b0

SHA1
54e0c5b0620351b9c6956a15a2afafe3b8f8dba4

SHA256
11d651cefb39afc6eafdd0906ffe98459a5bc39044f3ae9a5f9878c066776d2c

SHA512
43e0d5754cdaa1a24104190aa026a92887ef2d1ca236d62ba9989b1df3fbe0121aa1a0be0e50070a6121dacd588408a907c44a80752a94bbfff537d048d07fa7

Download Submit
memory/804-13-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/804-11-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/804-12-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/804-19-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/3460-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3460-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3460-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3460-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3460-8-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/3460-1-0x0000000000C00000-0x0000000000D00000-memory.dmp

Filesize
1024KB

Download
memory/5084-14-0x0000000000AE0000-0x0000000000AF5000-memory.dmp

Filesize
84KB

Download
memory/5084-16-0x0000000000AE0000-0x0000000000AF5000-memory.dmp

Filesize
84KB

Download
memory/5084-17-0x0000000000AE0000-0x0000000000AF5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads