tofsee | 7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62

General

Target

JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe
Size

290KB
MD5

d0935b18c8c4e688770bedde80cc75e3
SHA1

aa5c44e9f1a4c2169a67eb6a7919ab3daf4bd022
SHA256

7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62
SHA512

40fb545ffd988f448e08bd67046b98cc8c420af2ddc5a8fa6a90653583cf48d46849f06b83fcf60941bc2f425622f34af6f04b9a29e6cf96d827a3520fed9fe0
SSDEEP

6144:E4/bmgFd/VXDta0m+6SXuZet0ySbTHgV51pstmNaj:HzVBa0x6SXuZet0ySbTY1psK

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
1676	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\elhfgyyv\ImagePath = "C:\\Windows\\SysWOW64\\elhfgyyv\\slzldxzm.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_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe

Deletes itself 1 IoCs

pid	Process
4708	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
112	slzldxzm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 112 set thread context of 4708	112	slzldxzm.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
468	sc.exe
5096	sc.exe
2536	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
4732	2112	WerFault.exe	82
3616	112	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_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.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	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	slzldxzm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 3724	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	83
PID 2112 wrote to memory of 3724	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	83
PID 2112 wrote to memory of 3724	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	83
PID 2112 wrote to memory of 4924	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	85
PID 2112 wrote to memory of 4924	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	85
PID 2112 wrote to memory of 4924	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	85
PID 2112 wrote to memory of 468	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	88
PID 2112 wrote to memory of 468	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	88
PID 2112 wrote to memory of 468	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	88
PID 2112 wrote to memory of 5096	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	90
PID 2112 wrote to memory of 5096	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	90
PID 2112 wrote to memory of 5096	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	90
PID 2112 wrote to memory of 2536	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	92
PID 2112 wrote to memory of 2536	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	92
PID 2112 wrote to memory of 2536	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	92
PID 2112 wrote to memory of 1676	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	95
PID 2112 wrote to memory of 1676	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	95
PID 2112 wrote to memory of 1676	2112	JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe	95
PID 112 wrote to memory of 4708	112	slzldxzm.exe	101
PID 112 wrote to memory of 4708	112	slzldxzm.exe	101
PID 112 wrote to memory of 4708	112	slzldxzm.exe	101
PID 112 wrote to memory of 4708	112	slzldxzm.exe	101
PID 112 wrote to memory of 4708	112	slzldxzm.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\elhfgyyv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\slzldxzm.exe" C:\Windows\SysWOW64\elhfgyyv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4924
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create elhfgyyv binPath= "C:\Windows\SysWOW64\elhfgyyv\slzldxzm.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description elhfgyyv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5096
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start elhfgyyv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2536
- 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:1676
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2112 -s 1304
  2⤵
  - Program crash
  PID:4732

C:\Windows\SysWOW64\elhfgyyv\slzldxzm.exe
C:\Windows\SysWOW64\elhfgyyv\slzldxzm.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7aaa8b1ca724ea23bcaf68edcc1227e9f2215eecb62e910ef2b73f282cff6e62.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:112
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4708
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 112 -s 516
  2⤵
  - Program crash
  PID:3616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2112 -ip 2112
1⤵
PID:396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 112 -ip 112
1⤵
PID:4012

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\slzldxzm.exe

Filesize
12.6MB

MD5
bf68cda1fcbb29181792da1c55a20020

SHA1
e931cf2cfa8b9a06c0f7324d9da8c68226632455

SHA256
80ac4b92fafe894b38d9895b008322d5feb9f33e30c007fc9f604006aedc3f95

SHA512
01b26dcca7656687e3fe1dc3db420b2f6ec695ce01b4d6b4fbbc5df89a8defd1a5eb5f652f5b1e65f0c208d40b40687bf852203d827cc696ed850bf34061ee10

Download Submit
memory/112-15-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download
memory/2112-1-0x0000000002D80000-0x0000000002E80000-memory.dmp

Filesize
1024KB

Download
memory/2112-2-0x0000000004890000-0x00000000048A3000-memory.dmp

Filesize
76KB

Download
memory/2112-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2112-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2112-8-0x0000000004890000-0x00000000048A3000-memory.dmp

Filesize
76KB

Download
memory/2112-7-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download
memory/4708-11-0x0000000000620000-0x0000000000635000-memory.dmp

Filesize
84KB

Download
memory/4708-13-0x0000000000620000-0x0000000000635000-memory.dmp

Filesize
84KB

Download
memory/4708-14-0x0000000000620000-0x0000000000635000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads