tofsee | 8eff3edae4ee6eca6489b3381a069390f5ed14c433029cfb0f629e6462d0b904

General

Target

7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe
Size

14.5MB
MD5

7081bc2241e8d4803e2f17e06243d773
SHA1

81cef7c3ccbd978bdbad839d2ea6b10c719d8972
SHA256

8eff3edae4ee6eca6489b3381a069390f5ed14c433029cfb0f629e6462d0b904
SHA512

67863e8e8c87f3821a6fc6c69df66c2b0069ea0210fe2970814b7a508f111b8bb243669b9e09b49ab8193cdff03e9107b4dcfe753f1c951b124523dd56ec3a45
SSDEEP

24576:beI1lTNI1lTNI1lTNI1lTNI1lTNI1lTNI1lTNI1lTNI1lTNI1lTNI1lTNI1lTNIH:

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

pid	Process
512	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\emwkuis\ImagePath = "C:\\Windows\\SysWOW64\\emwkuis\\uscaaqzp.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	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1392	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4548	uscaaqzp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4548 set thread context of 1392	4548	uscaaqzp.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
4532	sc.exe
3588	sc.exe
5112	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
4660	4420	WerFault.exe	85
4476	4548	WerFault.exe	97

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	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	uscaaqzp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4420 wrote to memory of 3564	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	87
PID 4420 wrote to memory of 3564	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	87
PID 4420 wrote to memory of 3564	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	87
PID 4420 wrote to memory of 4440	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	89
PID 4420 wrote to memory of 4440	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	89
PID 4420 wrote to memory of 4440	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	89
PID 4420 wrote to memory of 5112	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	91
PID 4420 wrote to memory of 5112	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	91
PID 4420 wrote to memory of 5112	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	91
PID 4420 wrote to memory of 4532	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	93
PID 4420 wrote to memory of 4532	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	93
PID 4420 wrote to memory of 4532	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	93
PID 4420 wrote to memory of 3588	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	95
PID 4420 wrote to memory of 3588	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	95
PID 4420 wrote to memory of 3588	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	95
PID 4420 wrote to memory of 512	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	98
PID 4420 wrote to memory of 512	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	98
PID 4420 wrote to memory of 512	4420	7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe	98
PID 4548 wrote to memory of 1392	4548	uscaaqzp.exe	105
PID 4548 wrote to memory of 1392	4548	uscaaqzp.exe	105
PID 4548 wrote to memory of 1392	4548	uscaaqzp.exe	105
PID 4548 wrote to memory of 1392	4548	uscaaqzp.exe	105
PID 4548 wrote to memory of 1392	4548	uscaaqzp.exe	105

C:\Users\Admin\AppData\Local\Temp\7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4420
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\emwkuis\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3564
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uscaaqzp.exe" C:\Windows\SysWOW64\emwkuis\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4440
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create emwkuis binPath= "C:\Windows\SysWOW64\emwkuis\uscaaqzp.exe /d\"C:\Users\Admin\AppData\Local\Temp\7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5112
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description emwkuis "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4532
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start emwkuis
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3588
- 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:512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4420 -s 1028
  2⤵
  - Program crash
  PID:4660

C:\Windows\SysWOW64\emwkuis\uscaaqzp.exe
C:\Windows\SysWOW64\emwkuis\uscaaqzp.exe /d"C:\Users\Admin\AppData\Local\Temp\7081bc2241e8d4803e2f17e06243d773_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4548
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1392
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4548 -s 512
  2⤵
  - Program crash
  PID:4476

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4420 -ip 4420
1⤵
PID:1844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4548 -ip 4548
1⤵
PID:3732

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\uscaaqzp.exe

Filesize
12.0MB

MD5
4e679820afa71d35b67e11e050d25d5e

SHA1
aa9102ea0d2dafcc2711cdb77fd8c6992c3956c9

SHA256
08e9a1312de22eb37cd8303d66ef3f3bab097b1aef34afdc2e7b2492d47e5704

SHA512
735ce4d1b54eaf53586a987419a2ed54caa045d90d127c55ce86398bdceaee4c56329fb006a5fced863e4c22853f550dfc4a108eb7978492ef332550196beb57

Download Submit
memory/1392-16-0x0000000000F80000-0x0000000000F95000-memory.dmp

Filesize
84KB

Download
memory/1392-14-0x0000000000F80000-0x0000000000F95000-memory.dmp

Filesize
84KB

Download
memory/1392-17-0x0000000000F80000-0x0000000000F95000-memory.dmp

Filesize
84KB

Download
memory/4420-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4420-2-0x00000000005F0000-0x0000000000603000-memory.dmp

Filesize
76KB

Download
memory/4420-8-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/4420-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4420-9-0x00000000005F0000-0x0000000000603000-memory.dmp

Filesize
76KB

Download
memory/4420-1-0x0000000000670000-0x0000000000770000-memory.dmp

Filesize
1024KB

Download
memory/4548-11-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/4548-13-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/4548-12-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/4548-19-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads