tofsee | ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8

General

Target

JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe
Size

342KB
MD5

aabe3e7233157be95fab7d9295545d76
SHA1

b48ff5343235e704de19f11fbb69703cb8add3d7
SHA256

ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8
SHA512

2aedc5cfa0fa21c78d9e44961a40c2fb3c8503ab2e3b8dade135832e58dc72f0fdd782109a7a0d0212c77359adf7ede9caeaaf620e8c89a6bad1160bbf8d13de
SSDEEP

6144:DGw0hF+kAn2aj+qBqLpklFGodlzsPSa3MDUk4B+H90C:DhhdvBqLKlFGodlzsPSaq4Bu

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
3900	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\xphmdkep\ImagePath = "C:\\Windows\\SysWOW64\\xphmdkep\\umelkbmt.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe

Deletes itself 1 IoCs

pid	Process
3328	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
224	umelkbmt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 224 set thread context of 3328	224	umelkbmt.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3896	sc.exe
3508	sc.exe
2664	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
864	3320	WerFault.exe	83
4000	224	WerFault.exe	95

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	umelkbmt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3320 wrote to memory of 4484	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	84
PID 3320 wrote to memory of 4484	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	84
PID 3320 wrote to memory of 4484	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	84
PID 3320 wrote to memory of 2392	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	86
PID 3320 wrote to memory of 2392	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	86
PID 3320 wrote to memory of 2392	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	86
PID 3320 wrote to memory of 3896	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	88
PID 3320 wrote to memory of 3896	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	88
PID 3320 wrote to memory of 3896	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	88
PID 3320 wrote to memory of 3508	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	91
PID 3320 wrote to memory of 3508	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	91
PID 3320 wrote to memory of 3508	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	91
PID 3320 wrote to memory of 2664	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	93
PID 3320 wrote to memory of 2664	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	93
PID 3320 wrote to memory of 2664	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	93
PID 3320 wrote to memory of 3900	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	96
PID 3320 wrote to memory of 3900	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	96
PID 3320 wrote to memory of 3900	3320	JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe	96
PID 224 wrote to memory of 3328	224	umelkbmt.exe	102
PID 224 wrote to memory of 3328	224	umelkbmt.exe	102
PID 224 wrote to memory of 3328	224	umelkbmt.exe	102
PID 224 wrote to memory of 3328	224	umelkbmt.exe	102
PID 224 wrote to memory of 3328	224	umelkbmt.exe	102

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3320
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xphmdkep\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4484
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\umelkbmt.exe" C:\Windows\SysWOW64\xphmdkep\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2392
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xphmdkep binPath= "C:\Windows\SysWOW64\xphmdkep\umelkbmt.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3896
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xphmdkep "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3508
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xphmdkep
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2664
- 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:3900
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3320 -s 1208
  2⤵
  - Program crash
  PID:864

C:\Windows\SysWOW64\xphmdkep\umelkbmt.exe
C:\Windows\SysWOW64\xphmdkep\umelkbmt.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac0b7246c66b3e4fdb6da832de6c418de78ee28e696d4bb8882031d9164cfba8.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:224
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3328
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 224 -s 520
  2⤵
  - Program crash
  PID:4000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3320 -ip 3320
1⤵
PID:3060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 224 -ip 224
1⤵
PID:4396

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\umelkbmt.exe

Filesize
10.4MB

MD5
57e026a815641bd06d7e5a5a2cac4ce9

SHA1
e1cea9c66c89a7e6eb306fd23d882e41f15af01b

SHA256
15f13d70db79416a6186be4a7a8094014c44a0228b1c82726470417f41d76c0c

SHA512
b081efc45807968c4201c133d0087098c01d063cf0c3e088eb4713b2a0f67b1ebce13709b33049a7e1e20a7c6fcf504b901265fd98c7647eb3472cdea5a08332

Download Submit
memory/224-15-0x0000000000400000-0x00000000008FA000-memory.dmp

Filesize
5.0MB

Download
memory/3320-1-0x0000000000BF0000-0x0000000000CF0000-memory.dmp

Filesize
1024KB

Download
memory/3320-2-0x0000000000A50000-0x0000000000A63000-memory.dmp

Filesize
76KB

Download
memory/3320-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3320-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3320-8-0x0000000000A50000-0x0000000000A63000-memory.dmp

Filesize
76KB

Download
memory/3320-7-0x0000000000400000-0x00000000008FA000-memory.dmp

Filesize
5.0MB

Download
memory/3328-11-0x00000000006D0000-0x00000000006E5000-memory.dmp

Filesize
84KB

Download
memory/3328-13-0x00000000006D0000-0x00000000006E5000-memory.dmp

Filesize
84KB

Download
memory/3328-14-0x00000000006D0000-0x00000000006E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads