tofsee | 9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942

General

Target

JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe
Size

291KB
MD5

d19143b5b307f466773d78beaffdfddd
SHA1

3a0c0f85cac9a9c190d1b634e4a8d1b9ce139c62
SHA256

9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942
SHA512

1767680e382d3879beda7361f844e75401714f33ede60c40a23715b53174f325307b0d7ed6228af25c4fa7ee15080f2e75cac40d08bb9bc17a05ad5ab1ab9f41
SSDEEP

6144:bLAYn+dp6In11uvJXgWxvRma9zxWQYeTGDMwfzh:bMWRI10vJQ+vRma9zxWQEdfzh

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
4808	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\mefyhejh\ImagePath = "C:\\Windows\\SysWOW64\\mefyhejh\\exiyjgzs.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe

Deletes itself 1 IoCs

pid	Process
4756	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3992	exiyjgzs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3992 set thread context of 4756	3992	exiyjgzs.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1256	sc.exe
672	sc.exe
2228	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
4948	4376	WerFault.exe	81
2172	3992	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	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	exiyjgzs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4376 wrote to memory of 5084	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	82
PID 4376 wrote to memory of 5084	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	82
PID 4376 wrote to memory of 5084	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	82
PID 4376 wrote to memory of 376	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	84
PID 4376 wrote to memory of 376	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	84
PID 4376 wrote to memory of 376	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	84
PID 4376 wrote to memory of 672	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	86
PID 4376 wrote to memory of 672	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	86
PID 4376 wrote to memory of 672	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	86
PID 4376 wrote to memory of 2228	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	88
PID 4376 wrote to memory of 2228	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	88
PID 4376 wrote to memory of 2228	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	88
PID 4376 wrote to memory of 1256	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	90
PID 4376 wrote to memory of 1256	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	90
PID 4376 wrote to memory of 1256	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	90
PID 4376 wrote to memory of 4808	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	93
PID 4376 wrote to memory of 4808	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	93
PID 4376 wrote to memory of 4808	4376	JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe	93
PID 3992 wrote to memory of 4756	3992	exiyjgzs.exe	98
PID 3992 wrote to memory of 4756	3992	exiyjgzs.exe	98
PID 3992 wrote to memory of 4756	3992	exiyjgzs.exe	98
PID 3992 wrote to memory of 4756	3992	exiyjgzs.exe	98
PID 3992 wrote to memory of 4756	3992	exiyjgzs.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mefyhejh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\exiyjgzs.exe" C:\Windows\SysWOW64\mefyhejh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mefyhejh binPath= "C:\Windows\SysWOW64\mefyhejh\exiyjgzs.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mefyhejh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mefyhejh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1256
- 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:4808
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4376 -s 584
  2⤵
  - Program crash
  PID:4948

C:\Windows\SysWOW64\mefyhejh\exiyjgzs.exe
C:\Windows\SysWOW64\mefyhejh\exiyjgzs.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_9b847b83bb51c8cf825e4b2fc385dab4e0e2c518029a1cedd8575f5f581bc942.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3992
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4756
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3992 -s 512
  2⤵
  - Program crash
  PID:2172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4376 -ip 4376
1⤵
PID:1316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 3992 -ip 3992
1⤵
PID:4968

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\exiyjgzs.exe

Filesize
13.8MB

MD5
80f99b6a2d0eddf5a80ab154c3d824b4

SHA1
284c2808d48a36e55cd20e9968a7775a1e8fc96b

SHA256
ae9a3ec3d20e24e658e4b3583365e57b22125dea151ec63d87e69a4874670402

SHA512
02edf20881937c7a86797c6114303ffbbd7ceda3cf54d886e27f7fc93cbda9af9b4dc60d7442a25425012fdd4aedd7292c3f4914011732cc322909894fd255d1

Download Submit
memory/3992-15-0x0000000000400000-0x00000000008ED000-memory.dmp

Filesize
4.9MB

Download
memory/4376-1-0x0000000000B50000-0x0000000000C50000-memory.dmp

Filesize
1024KB

Download
memory/4376-2-0x0000000000A90000-0x0000000000AA3000-memory.dmp

Filesize
76KB

Download
memory/4376-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4376-7-0x0000000000400000-0x00000000008ED000-memory.dmp

Filesize
4.9MB

Download
memory/4376-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4376-8-0x0000000000A90000-0x0000000000AA3000-memory.dmp

Filesize
76KB

Download
memory/4756-11-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/4756-13-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/4756-14-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads