tofsee | 3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4

General

Target

JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe
Size

10.9MB
MD5

2f0b4b4819d48ff7ba4dbeb258a93189
SHA1

98067909fa21b0bf107449206405ac8b13e5c776
SHA256

3a115fc118d5b0933c8550da6125b78d4956e27f671c00945d0ad04d5839dab4
SHA512

090e957459548ed42424f07cb387664bff76d0efcc5b36943339b909290696496738c0b4586f446df4f6c0f1aa4faccb6ad66aab404a8775e7146491b4cd16e1
SSDEEP

6144:HLmhaXrxJHCx7HdqAT7mvs/bNAk3B79NmVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV1:HLmhaXrxJHuHdPT1n9N

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
1292	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\amsdbugy\ImagePath = "C:\\Windows\\SysWOW64\\amsdbugy\\amhelkky.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe

Deletes itself 1 IoCs

pid	Process
1076	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1512	amhelkky.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1512 set thread context of 1076	1512	amhelkky.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
944	sc.exe
492	sc.exe
2572	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
1704	4292	WerFault.exe	81
4780	1512	WerFault.exe	92

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	amhelkky.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.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 4292 wrote to memory of 1640	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	82
PID 4292 wrote to memory of 1640	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	82
PID 4292 wrote to memory of 1640	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	82
PID 4292 wrote to memory of 648	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	84
PID 4292 wrote to memory of 648	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	84
PID 4292 wrote to memory of 648	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	84
PID 4292 wrote to memory of 944	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	86
PID 4292 wrote to memory of 944	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	86
PID 4292 wrote to memory of 944	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	86
PID 4292 wrote to memory of 492	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	88
PID 4292 wrote to memory of 492	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	88
PID 4292 wrote to memory of 492	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	88
PID 4292 wrote to memory of 2572	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	90
PID 4292 wrote to memory of 2572	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	90
PID 4292 wrote to memory of 2572	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	90
PID 4292 wrote to memory of 1292	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	93
PID 4292 wrote to memory of 1292	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	93
PID 4292 wrote to memory of 1292	4292	JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe	93
PID 1512 wrote to memory of 1076	1512	amhelkky.exe	98
PID 1512 wrote to memory of 1076	1512	amhelkky.exe	98
PID 1512 wrote to memory of 1076	1512	amhelkky.exe	98
PID 1512 wrote to memory of 1076	1512	amhelkky.exe	98
PID 1512 wrote to memory of 1076	1512	amhelkky.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4292
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\amsdbugy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1640
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\amhelkky.exe" C:\Windows\SysWOW64\amsdbugy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:648
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create amsdbugy binPath= "C:\Windows\SysWOW64\amsdbugy\amhelkky.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:944
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description amsdbugy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:492
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start amsdbugy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2572
- 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:1292
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4292 -s 576
  2⤵
  - Program crash
  PID:1704

C:\Windows\SysWOW64\amsdbugy\amhelkky.exe
C:\Windows\SysWOW64\amsdbugy\amhelkky.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2f0b4b4819d48ff7ba4dbeb258a93189.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1512
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1512 -s 556
  2⤵
  - Program crash
  PID:4780

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4292 -ip 4292
1⤵
PID:1180

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1512 -ip 1512
1⤵
PID:2116

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\amhelkky.exe

Filesize
13.3MB

MD5
faa8d0b70d5de3798f70bf0d42c0df67

SHA1
69257ef10d1f1ed474b6b5104080fb98a2597076

SHA256
e6bd712f709984c95a3472affbd60157e7487cbf6bb95c071aa4c0ea735e3dd8

SHA512
a24d82b4cc40a07facd7c7404c94c8c93b403072e133eee6c81f104f1b46801c76ad6d97b6b5c36fc429f5a3e7e192c5deaa46bb4753a5d581b2fdb615c5d129

Download Submit
memory/1076-12-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/1076-18-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/1076-14-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/1512-15-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/1512-11-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/1512-16-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/4292-9-0x0000000000CE0000-0x0000000000CF3000-memory.dmp

Filesize
76KB

Download
memory/4292-8-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/4292-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4292-1-0x00000000009E0000-0x0000000000AE0000-memory.dmp

Filesize
1024KB

Download
memory/4292-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4292-2-0x0000000000CE0000-0x0000000000CF3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads