tofsee | 1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830

General

Target

JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe
Size

335KB
MD5

017583b1057e7938a8328077ea6798c9
SHA1

216cf9f3c20d94f1b61963e1a9bfc3bbfbe10148
SHA256

1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830
SHA512

4b18b0cf7c43a66b8c77351ca96b992a89f0f8db0cebb3443cac413933921f44c48540729acbcf52617f901c6e873f368089febaeb0a937f8b4de97384eb1f63
SSDEEP

6144:VAlVbQ7oF8g8oGQtHsdVlZYtLQLyF1nRETd:mlh4oPbjtHsdV7sQLyLyT

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
744	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\srhjjuaj\ImagePath = "C:\\Windows\\SysWOW64\\srhjjuaj\\nchickng.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe

Deletes itself 1 IoCs

pid	Process
3052	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4476	nchickng.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4476 set thread context of 3052	4476	nchickng.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3356	sc.exe
2916	sc.exe
736	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
3936	5032	WerFault.exe	82
2596	4476	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	cmd.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	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.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	nchickng.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5032 wrote to memory of 3736	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	83
PID 5032 wrote to memory of 3736	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	83
PID 5032 wrote to memory of 3736	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	83
PID 5032 wrote to memory of 4808	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	85
PID 5032 wrote to memory of 4808	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	85
PID 5032 wrote to memory of 4808	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	85
PID 5032 wrote to memory of 3356	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	87
PID 5032 wrote to memory of 3356	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	87
PID 5032 wrote to memory of 3356	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	87
PID 5032 wrote to memory of 2916	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	90
PID 5032 wrote to memory of 2916	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	90
PID 5032 wrote to memory of 2916	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	90
PID 5032 wrote to memory of 736	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	92
PID 5032 wrote to memory of 736	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	92
PID 5032 wrote to memory of 736	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	92
PID 5032 wrote to memory of 744	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	95
PID 5032 wrote to memory of 744	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	95
PID 5032 wrote to memory of 744	5032	JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe	95
PID 4476 wrote to memory of 3052	4476	nchickng.exe	101
PID 4476 wrote to memory of 3052	4476	nchickng.exe	101
PID 4476 wrote to memory of 3052	4476	nchickng.exe	101
PID 4476 wrote to memory of 3052	4476	nchickng.exe	101
PID 4476 wrote to memory of 3052	4476	nchickng.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5032
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\srhjjuaj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nchickng.exe" C:\Windows\SysWOW64\srhjjuaj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4808
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create srhjjuaj binPath= "C:\Windows\SysWOW64\srhjjuaj\nchickng.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3356
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description srhjjuaj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2916
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start srhjjuaj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:736
- 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:744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5032 -s 1028
  2⤵
  - Program crash
  PID:3936

C:\Windows\SysWOW64\srhjjuaj\nchickng.exe
C:\Windows\SysWOW64\srhjjuaj\nchickng.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1ac1ba9e387d088187f04697d6365f7b750d0883c82581d2aef0609c6060a830.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4476
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3052
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4476 -s 508
  2⤵
  - Program crash
  PID:2596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 5032 -ip 5032
1⤵
PID:3576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4476 -ip 4476
1⤵
PID:3252

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\nchickng.exe

Filesize
12.5MB

MD5
d6692e2ac74863031a0cfc9aaaa4cf4d

SHA1
33e09ad03f4c550ba0e5a6e1ee7241c84934d2f2

SHA256
1d311c3e66e2d4626810247589e1b0a72780010f3ecfec57c67c0a2e3e474f10

SHA512
3b3c055a3bea7a96e6d0468ac724a3b9850c387296176c3750dbae4842340419947fbded1a6b88f5091a7a2ebd7dc3f870e10a684d5c39936c72f46b2cf50f35

Download Submit
memory/3052-11-0x00000000006E0000-0x00000000006F5000-memory.dmp

Filesize
84KB

Download
memory/3052-13-0x00000000006E0000-0x00000000006F5000-memory.dmp

Filesize
84KB

Download
memory/3052-14-0x00000000006E0000-0x00000000006F5000-memory.dmp

Filesize
84KB

Download
memory/4476-15-0x0000000000400000-0x0000000002B4C000-memory.dmp

Filesize
39.3MB

Download
memory/5032-2-0x0000000002BE0000-0x0000000002BF3000-memory.dmp

Filesize
76KB

Download
memory/5032-1-0x0000000002C20000-0x0000000002D20000-memory.dmp

Filesize
1024KB

Download
memory/5032-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5032-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5032-8-0x0000000002BE0000-0x0000000002BF3000-memory.dmp

Filesize
76KB

Download
memory/5032-7-0x0000000000400000-0x0000000002B4C000-memory.dmp

Filesize
39.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads