tofsee | af2427a96c386bf82e2db183857b7a587f0d6793aeb1b3b3198bfc2c4cc940db

General

Target

JaffaCakes118_370547d48d40907434f6ae225fe63299.exe
Size

14.5MB
MD5

370547d48d40907434f6ae225fe63299
SHA1

70e61d11ceb4dba3ce49e82c2185dd4611df6fb7
SHA256

af2427a96c386bf82e2db183857b7a587f0d6793aeb1b3b3198bfc2c4cc940db
SHA512

7a3c58e82ba8ecff0530da16bea8a57bd3ce3accc6c37b6ff251a8626aa00ebfdb15ea445a0acd46f9e32a7859c0f4c3e9604d3d542b3772198ff3f8f83ea90d
SSDEEP

6144:fiP2GmiErAKEjgoUYRxiPnkIW2p6/hR6bPz/9hniF:2dEkf5UmiE2pagL9hi

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
4132	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\yjkapymt\ImagePath = "C:\\Windows\\SysWOW64\\yjkapymt\\dpkhonnb.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe

Deletes itself 1 IoCs

pid	Process
2684	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2264	dpkhonnb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2264 set thread context of 2684	2264	dpkhonnb.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2420	sc.exe
4732	sc.exe
2628	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
724	4104	WerFault.exe	82
2000	2264	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	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	dpkhonnb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4104 wrote to memory of 3520	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	83
PID 4104 wrote to memory of 3520	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	83
PID 4104 wrote to memory of 3520	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	83
PID 4104 wrote to memory of 3004	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	85
PID 4104 wrote to memory of 3004	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	85
PID 4104 wrote to memory of 3004	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	85
PID 4104 wrote to memory of 2420	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	87
PID 4104 wrote to memory of 2420	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	87
PID 4104 wrote to memory of 2420	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	87
PID 4104 wrote to memory of 4732	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	89
PID 4104 wrote to memory of 4732	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	89
PID 4104 wrote to memory of 4732	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	89
PID 4104 wrote to memory of 2628	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	91
PID 4104 wrote to memory of 2628	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	91
PID 4104 wrote to memory of 2628	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	91
PID 4104 wrote to memory of 4132	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	94
PID 4104 wrote to memory of 4132	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	94
PID 4104 wrote to memory of 4132	4104	JaffaCakes118_370547d48d40907434f6ae225fe63299.exe	94
PID 2264 wrote to memory of 2684	2264	dpkhonnb.exe	100
PID 2264 wrote to memory of 2684	2264	dpkhonnb.exe	100
PID 2264 wrote to memory of 2684	2264	dpkhonnb.exe	100
PID 2264 wrote to memory of 2684	2264	dpkhonnb.exe	100
PID 2264 wrote to memory of 2684	2264	dpkhonnb.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_370547d48d40907434f6ae225fe63299.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_370547d48d40907434f6ae225fe63299.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4104
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yjkapymt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3520
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dpkhonnb.exe" C:\Windows\SysWOW64\yjkapymt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3004
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yjkapymt binPath= "C:\Windows\SysWOW64\yjkapymt\dpkhonnb.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_370547d48d40907434f6ae225fe63299.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2420
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yjkapymt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4732
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yjkapymt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2628
- 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:4132
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4104 -s 584
  2⤵
  - Program crash
  PID:724

C:\Windows\SysWOW64\yjkapymt\dpkhonnb.exe
C:\Windows\SysWOW64\yjkapymt\dpkhonnb.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_370547d48d40907434f6ae225fe63299.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2264
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2264 -s 516
  2⤵
  - Program crash
  PID:2000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 4104 -ip 4104
1⤵
PID:2392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 2264 -ip 2264
1⤵
PID:5076

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\dpkhonnb.exe

Filesize
14.6MB

MD5
6fccb43cac3400dd884bef85c11ad07b

SHA1
0f6ceefbae99a486cf2356e15805d16300419cfb

SHA256
92487022af75283bbe487028c0b37f709b12b8e63484e47edc5b8e103f54444e

SHA512
1b4228a7add213e72fa391d211e998bed88b751c77ee6d38ef1157d94f22aecdbfdf3b806f6612ad0197691c8c93d4f46efbe3c3b29b8e9ebf6b515520a2c969

Download Submit
memory/2264-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2264-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2264-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2264-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2684-14-0x0000000000F80000-0x0000000000F95000-memory.dmp

Filesize
84KB

Download
memory/2684-16-0x0000000000F80000-0x0000000000F95000-memory.dmp

Filesize
84KB

Download
memory/2684-17-0x0000000000F80000-0x0000000000F95000-memory.dmp

Filesize
84KB

Download
memory/4104-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4104-2-0x00000000008B0000-0x00000000008C3000-memory.dmp

Filesize
76KB

Download
memory/4104-9-0x00000000008B0000-0x00000000008C3000-memory.dmp

Filesize
76KB

Download
memory/4104-8-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4104-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4104-1-0x0000000000470000-0x0000000000570000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads