tofsee | 99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440

General

Target

JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe
Size

242KB
MD5

cb3236bf34a4d42c3c120d2883670410
SHA1

a0570c98e666a8e3507c9b7aba3e5467f22f91ef
SHA256

99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440
SHA512

04898ac5a5dc5a39be98e2113bc15dbc2fe69e69651eca655a7a7f3b711c8892cf6d70eb6ff64367ef949e6b24fc07329e38c989af66709b52adc9937dbecd0b
SSDEEP

6144:/rZQVnJzxj5nP76vk7wQ6udJm1lzvGCUWlnpj:DZ2zxj5nPmRQ6QgjzOCnl

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
8	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\ajxevykq\ImagePath = "C:\\Windows\\SysWOW64\\ajxevykq\\ybucacku.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_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe

Deletes itself 1 IoCs

pid	Process
560	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4204	ybucacku.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4204 set thread context of 560	4204	ybucacku.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
732	sc.exe
2396	sc.exe
2380	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
248	5072	WerFault.exe	81
240	4204	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	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	ybucacku.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5072 wrote to memory of 4352	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	82
PID 5072 wrote to memory of 4352	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	82
PID 5072 wrote to memory of 4352	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	82
PID 5072 wrote to memory of 3660	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	84
PID 5072 wrote to memory of 3660	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	84
PID 5072 wrote to memory of 3660	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	84
PID 5072 wrote to memory of 732	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	86
PID 5072 wrote to memory of 732	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	86
PID 5072 wrote to memory of 732	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	86
PID 5072 wrote to memory of 2396	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	88
PID 5072 wrote to memory of 2396	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	88
PID 5072 wrote to memory of 2396	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	88
PID 5072 wrote to memory of 2380	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	90
PID 5072 wrote to memory of 2380	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	90
PID 5072 wrote to memory of 2380	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	90
PID 5072 wrote to memory of 8	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	93
PID 5072 wrote to memory of 8	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	93
PID 5072 wrote to memory of 8	5072	JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe	93
PID 4204 wrote to memory of 560	4204	ybucacku.exe	98
PID 4204 wrote to memory of 560	4204	ybucacku.exe	98
PID 4204 wrote to memory of 560	4204	ybucacku.exe	98
PID 4204 wrote to memory of 560	4204	ybucacku.exe	98
PID 4204 wrote to memory of 560	4204	ybucacku.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5072
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ajxevykq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4352
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ybucacku.exe" C:\Windows\SysWOW64\ajxevykq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ajxevykq binPath= "C:\Windows\SysWOW64\ajxevykq\ybucacku.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:732
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ajxevykq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ajxevykq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2380
- 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:8
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5072 -s 1284
  2⤵
  - Program crash
  PID:248

C:\Windows\SysWOW64\ajxevykq\ybucacku.exe
C:\Windows\SysWOW64\ajxevykq\ybucacku.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_99149d6f29cef98f470d992232c7e16a61ac0fe638fed790d7d74396fd488440.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4204
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4204 -s 508
  2⤵
  - Program crash
  PID:240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 5072 -ip 5072
1⤵
PID:1344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4204 -ip 4204
1⤵
PID:4916

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\ybucacku.exe

Filesize
12.3MB

MD5
8cd56a312d5994b836e98cc12b504572

SHA1
3f356591ff671ef95ed11efbf20305b75fd19c00

SHA256
a26facfafdd7310fff41dd6daa67bd89f529a9f64e59defc283c52ebb5b9e169

SHA512
c2c65d4fb60065cc2716827c4e68e4bef3ec575e6d6d99bfa699d911cf883ea514bde8671de1ab18954cb89bf5fd079234922595b140f48c264982326ec9db82

Download Submit
memory/560-14-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/560-16-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/560-17-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/4204-11-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4204-12-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4204-13-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4204-19-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/5072-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5072-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/5072-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/5072-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5072-9-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/5072-1-0x00000000007A0000-0x00000000008A0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads