tofsee | 3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f

General

Target

JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe
Size

243KB
MD5

5bec809283e0c01e1992ead19a369ff7
SHA1

4885c08dc92d4c9ce5f5851d41626d5bdd84504d
SHA256

3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f
SHA512

3918e327a4bd7c75de753c2988e3d1af735168a995d4a5f05a7469e2694c104f6bd1d5c22a22d1b1fa167344c75041ea3fec87681c6becd620905138629354a2
SSDEEP

6144:ogZQpRhZlXC496tu87b7PYJVWs6b4B3D3lcxx:HZsXC496T7P+Qb4BTex

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
4460	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\qmqutlwo\ImagePath = "C:\\Windows\\SysWOW64\\qmqutlwo\\vlgsmycu.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe

Deletes itself 1 IoCs

pid	Process
2700	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2388	vlgsmycu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2388 set thread context of 2700	2388	vlgsmycu.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4628	sc.exe
3260	sc.exe
2416	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3944	4576	WerFault.exe	81
2148	2388	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	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.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	vlgsmycu.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4576 wrote to memory of 2436	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	82
PID 4576 wrote to memory of 2436	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	82
PID 4576 wrote to memory of 2436	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	82
PID 4576 wrote to memory of 2224	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	84
PID 4576 wrote to memory of 2224	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	84
PID 4576 wrote to memory of 2224	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	84
PID 4576 wrote to memory of 4628	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	86
PID 4576 wrote to memory of 4628	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	86
PID 4576 wrote to memory of 4628	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	86
PID 4576 wrote to memory of 3260	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	88
PID 4576 wrote to memory of 3260	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	88
PID 4576 wrote to memory of 3260	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	88
PID 4576 wrote to memory of 2416	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	90
PID 4576 wrote to memory of 2416	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	90
PID 4576 wrote to memory of 2416	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	90
PID 4576 wrote to memory of 4460	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	93
PID 4576 wrote to memory of 4460	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	93
PID 4576 wrote to memory of 4460	4576	JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe	93
PID 2388 wrote to memory of 2700	2388	vlgsmycu.exe	98
PID 2388 wrote to memory of 2700	2388	vlgsmycu.exe	98
PID 2388 wrote to memory of 2700	2388	vlgsmycu.exe	98
PID 2388 wrote to memory of 2700	2388	vlgsmycu.exe	98
PID 2388 wrote to memory of 2700	2388	vlgsmycu.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4576
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qmqutlwo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2436
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vlgsmycu.exe" C:\Windows\SysWOW64\qmqutlwo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2224
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qmqutlwo binPath= "C:\Windows\SysWOW64\qmqutlwo\vlgsmycu.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4628
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qmqutlwo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3260
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qmqutlwo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2416
- 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:4460
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4576 -s 676
  2⤵
  - Program crash
  PID:3944

C:\Windows\SysWOW64\qmqutlwo\vlgsmycu.exe
C:\Windows\SysWOW64\qmqutlwo\vlgsmycu.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_3c4fd17000293eb607581d749e88e41ac031464f9752e8bee38c5f09713ef14f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2388
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2388 -s 508
  2⤵
  - Program crash
  PID:2148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4576 -ip 4576
1⤵
PID:3028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2388 -ip 2388
1⤵
PID:1992

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\vlgsmycu.exe

Filesize
11.6MB

MD5
2304a0b34dbd422e62d02ab22c316ccc

SHA1
a78eba4f6671f1efaba67b1d13ecab92e2f265d8

SHA256
a7c3a83b0c2944a293e825135fe6c48f603bc038adcf01aed44e47dd9d30bc97

SHA512
7da7de2ff350577bd302a1d201c9ab72ec5576c00baf6fdc63d89f04a7d2073d68ffab3d672289f9c9ae4e40a1814b2dd8fb0afc441e8f6119cc51aa996f4de1

Download Submit
memory/2388-13-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2388-12-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2388-11-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2388-18-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2700-14-0x0000000000150000-0x0000000000165000-memory.dmp

Filesize
84KB

Download
memory/2700-16-0x0000000000150000-0x0000000000165000-memory.dmp

Filesize
84KB

Download
memory/2700-17-0x0000000000150000-0x0000000000165000-memory.dmp

Filesize
84KB

Download
memory/4576-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4576-2-0x00000000004C0000-0x00000000004D3000-memory.dmp

Filesize
76KB

Download
memory/4576-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4576-9-0x00000000004C0000-0x00000000004D3000-memory.dmp

Filesize
76KB

Download
memory/4576-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4576-1-0x0000000000550000-0x0000000000650000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads