tofsee | 326afe31d4029fd6bb8221319ea23a52d145c9f1f4f85bdcad3ae9b4318adb4f

General

Target

2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe
Size

14.2MB
MD5

2c0c2678b5b28f3ea907ca453c439cff
SHA1

42d910a108e92d204b54a6f69b224ad20b144872
SHA256

326afe31d4029fd6bb8221319ea23a52d145c9f1f4f85bdcad3ae9b4318adb4f
SHA512

30590b294e4c17b37214edc4f798a63fb994a8538eb40e7d9705302eece5d3f785c8d7de1eaf4bb83694652589b69d17da0970e4bd0324a2621a068cc1042e65
SSDEEP

49152:A1yvllllllllllllllllllllllllllllllllllllllllllllllllllllllllllln:AA

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
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
5072	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\lmasnhtk\ImagePath = "C:\\Windows\\SysWOW64\\lmasnhtk\\kshlywff.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
464	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3944	kshlywff.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3944 set thread context of 464	3944	kshlywff.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3332	sc.exe
4520	sc.exe
3292	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
2600	2280	WerFault.exe	82
2708	3944	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	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.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	kshlywff.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 1948	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	86
PID 2280 wrote to memory of 1948	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	86
PID 2280 wrote to memory of 1948	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	86
PID 2280 wrote to memory of 5036	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	88
PID 2280 wrote to memory of 5036	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	88
PID 2280 wrote to memory of 5036	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	88
PID 2280 wrote to memory of 3332	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	90
PID 2280 wrote to memory of 3332	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	90
PID 2280 wrote to memory of 3332	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	90
PID 2280 wrote to memory of 4520	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	92
PID 2280 wrote to memory of 4520	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	92
PID 2280 wrote to memory of 4520	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	92
PID 2280 wrote to memory of 3292	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	94
PID 2280 wrote to memory of 3292	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	94
PID 2280 wrote to memory of 3292	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	94
PID 2280 wrote to memory of 5072	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	97
PID 2280 wrote to memory of 5072	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	97
PID 2280 wrote to memory of 5072	2280	2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe	97
PID 3944 wrote to memory of 464	3944	kshlywff.exe	102
PID 3944 wrote to memory of 464	3944	kshlywff.exe	102
PID 3944 wrote to memory of 464	3944	kshlywff.exe	102
PID 3944 wrote to memory of 464	3944	kshlywff.exe	102
PID 3944 wrote to memory of 464	3944	kshlywff.exe	102

C:\Users\Admin\AppData\Local\Temp\2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lmasnhtk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1948
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kshlywff.exe" C:\Windows\SysWOW64\lmasnhtk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5036
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lmasnhtk binPath= "C:\Windows\SysWOW64\lmasnhtk\kshlywff.exe /d\"C:\Users\Admin\AppData\Local\Temp\2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3332
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lmasnhtk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4520
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lmasnhtk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3292
- 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:5072
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2280 -s 1036
  2⤵
  - Program crash
  PID:2600

C:\Windows\SysWOW64\lmasnhtk\kshlywff.exe
C:\Windows\SysWOW64\lmasnhtk\kshlywff.exe /d"C:\Users\Admin\AppData\Local\Temp\2c0c2678b5b28f3ea907ca453c439cff_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3944
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:464
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3944 -s 516
  2⤵
  - Program crash
  PID:2708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2280 -ip 2280
1⤵
PID:64

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3944 -ip 3944
1⤵
PID:4712

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\kshlywff.exe

Filesize
10.6MB

MD5
e6a56e5bcfbfe1263c2c504318af625f

SHA1
559f1e511d06bfb99fb0307c5261b60f3c9d628e

SHA256
fc52d9b1b5e1455d34b673d8a1327fa4563a8fa8ad17cedda48415a5c8d1a679

SHA512
8f4ce01bea0eadfac5ab0e1c730e4f7195de856aa00e4c97fddb4bc2bfe3dd951d5d395442ae45ea962b0dc7236711c60c114a7c41fe598daaca8382e7e1f110

Download Submit
memory/464-11-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/464-13-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/464-14-0x0000000001030000-0x0000000001045000-memory.dmp

Filesize
84KB

Download
memory/2280-1-0x0000000000DE0000-0x0000000000EE0000-memory.dmp

Filesize
1024KB

Download
memory/2280-2-0x0000000002980000-0x0000000002993000-memory.dmp

Filesize
76KB

Download
memory/2280-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2280-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2280-8-0x0000000002980000-0x0000000002993000-memory.dmp

Filesize
76KB

Download
memory/2280-7-0x0000000000400000-0x0000000000C20000-memory.dmp

Filesize
8.1MB

Download
memory/3944-15-0x0000000000400000-0x0000000000C20000-memory.dmp

Filesize
8.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads