tofsee | 65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0

General

Target

JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe
Size

284KB
MD5

ebc386c5e58be126d9e8317f518bde8a
SHA1

d1e5459b19c9b4d8cec638a9730b38d33a57ec29
SHA256

65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0
SHA512

9a824af4e2c3e1b5040162360a191488b311475bdf742ad9ae23cfdff158b59dad1768ccb73a2a86f77c402d6719793b7fa88d3c74a9500afca641e6cf634239
SSDEEP

3072:2QWV+ioVH8ycDJdRc1/Q3RNyqUy39S20keU8/W8JMu2YaqK6nq1P93Y:VWVZ8yDJk1/QBNfP9Pu2YaqKua

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
3008	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\uuhdrgv\ImagePath = "C:\\Windows\\SysWOW64\\uuhdrgv\\jvhppapx.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe

Deletes itself 1 IoCs

pid	Process
1028	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3636	jvhppapx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3636 set thread context of 1028	3636	jvhppapx.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4700	sc.exe
2316	sc.exe
2780	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
2652	4996	WerFault.exe	83
3468	3636	WerFault.exe	94

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	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.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	jvhppapx.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4996 wrote to memory of 4956	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	84
PID 4996 wrote to memory of 4956	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	84
PID 4996 wrote to memory of 4956	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	84
PID 4996 wrote to memory of 4132	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	86
PID 4996 wrote to memory of 4132	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	86
PID 4996 wrote to memory of 4132	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	86
PID 4996 wrote to memory of 2780	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	88
PID 4996 wrote to memory of 2780	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	88
PID 4996 wrote to memory of 2780	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	88
PID 4996 wrote to memory of 4700	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	90
PID 4996 wrote to memory of 4700	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	90
PID 4996 wrote to memory of 4700	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	90
PID 4996 wrote to memory of 2316	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	92
PID 4996 wrote to memory of 2316	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	92
PID 4996 wrote to memory of 2316	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	92
PID 4996 wrote to memory of 3008	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	95
PID 4996 wrote to memory of 3008	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	95
PID 4996 wrote to memory of 3008	4996	JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe	95
PID 3636 wrote to memory of 1028	3636	jvhppapx.exe	101
PID 3636 wrote to memory of 1028	3636	jvhppapx.exe	101
PID 3636 wrote to memory of 1028	3636	jvhppapx.exe	101
PID 3636 wrote to memory of 1028	3636	jvhppapx.exe	101
PID 3636 wrote to memory of 1028	3636	jvhppapx.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4996
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uuhdrgv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jvhppapx.exe" C:\Windows\SysWOW64\uuhdrgv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4132
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uuhdrgv binPath= "C:\Windows\SysWOW64\uuhdrgv\jvhppapx.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uuhdrgv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4700
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uuhdrgv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2316
- 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:3008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4996 -s 1208
  2⤵
  - Program crash
  PID:2652

C:\Windows\SysWOW64\uuhdrgv\jvhppapx.exe
C:\Windows\SysWOW64\uuhdrgv\jvhppapx.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65bc8314166799e28092cbbee1a4e3f6b0e5de9e9790107189f26f5e90a835f0.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3636
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3636 -s 556
  2⤵
  - Program crash
  PID:3468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4996 -ip 4996
1⤵
PID:3396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 3636 -ip 3636
1⤵
PID:116

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\jvhppapx.exe

Filesize
13.3MB

MD5
3089fd06a7987338ecb6177a09189666

SHA1
d6aa5e0a15170579890866cb46abb46ac218efbd

SHA256
d742fdc1ffa0752d16e71223b6962c345cbf5da30baa74d4ee4aed5eb88c9a84

SHA512
39027910582f43e74cee996744d6fed0bbf60da062e8f7fef97693e09020c83822ff3121ce02d87cbb1ba5b534f8d2edb2dd5111a76dde3120428a15efdf17f0

Download Submit
memory/1028-11-0x00000000006E0000-0x00000000006F5000-memory.dmp

Filesize
84KB

Download
memory/1028-13-0x00000000006E0000-0x00000000006F5000-memory.dmp

Filesize
84KB

Download
memory/1028-15-0x00000000006E0000-0x00000000006F5000-memory.dmp

Filesize
84KB

Download
memory/3636-14-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/4996-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4996-1-0x0000000002F00000-0x0000000003000000-memory.dmp

Filesize
1024KB

Download
memory/4996-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4996-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4996-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4996-8-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads