tofsee | a492284b3b05e75509bd1b8b6e7f73b5bf7f78263d5725082a8c76bb782b3c63

General

Target

a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe
Size

14.8MB
MD5

a1cdfab5a4af43636fe8141ba9bb2215
SHA1

fe8e0d854dee3d741167f4c302b5f05c71e23189
SHA256

a492284b3b05e75509bd1b8b6e7f73b5bf7f78263d5725082a8c76bb782b3c63
SHA512

9dca7bbfbcc6178eecc0221afae418b5012d27b4023e754d0db54811d57074b21583f400408fe06790869585eee163ece122dfd064050287ce7d3561c151e37f
SSDEEP

12288:F1vfanyphPu2xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFz:zvfEyph

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.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
1108	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\fouvklws\ImagePath = "C:\\Windows\\SysWOW64\\fouvklws\\zichzytp.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1620	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3496	zichzytp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3496 set thread context of 1620	3496	zichzytp.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
4424	sc.exe
1228	sc.exe
2528	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
1928	3172	WerFault.exe	81
4908	3496	WerFault.exe	96

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	svchost.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	zichzytp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3172 wrote to memory of 4492	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	82
PID 3172 wrote to memory of 4492	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	82
PID 3172 wrote to memory of 4492	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	82
PID 3172 wrote to memory of 3068	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	86
PID 3172 wrote to memory of 3068	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	86
PID 3172 wrote to memory of 3068	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	86
PID 3172 wrote to memory of 4424	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	88
PID 3172 wrote to memory of 4424	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	88
PID 3172 wrote to memory of 4424	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	88
PID 3172 wrote to memory of 1228	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	92
PID 3172 wrote to memory of 1228	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	92
PID 3172 wrote to memory of 1228	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	92
PID 3172 wrote to memory of 2528	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	94
PID 3172 wrote to memory of 2528	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	94
PID 3172 wrote to memory of 2528	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	94
PID 3172 wrote to memory of 1108	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	97
PID 3172 wrote to memory of 1108	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	97
PID 3172 wrote to memory of 1108	3172	a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe	97
PID 3496 wrote to memory of 1620	3496	zichzytp.exe	103
PID 3496 wrote to memory of 1620	3496	zichzytp.exe	103
PID 3496 wrote to memory of 1620	3496	zichzytp.exe	103
PID 3496 wrote to memory of 1620	3496	zichzytp.exe	103
PID 3496 wrote to memory of 1620	3496	zichzytp.exe	103

C:\Users\Admin\AppData\Local\Temp\a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3172
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fouvklws\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zichzytp.exe" C:\Windows\SysWOW64\fouvklws\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3068
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fouvklws binPath= "C:\Windows\SysWOW64\fouvklws\zichzytp.exe /d\"C:\Users\Admin\AppData\Local\Temp\a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4424
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fouvklws "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fouvklws
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2528
- 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:1108
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3172 -s 800
  2⤵
  - Program crash
  PID:1928

C:\Windows\SysWOW64\fouvklws\zichzytp.exe
C:\Windows\SysWOW64\fouvklws\zichzytp.exe /d"C:\Users\Admin\AppData\Local\Temp\a1cdfab5a4af43636fe8141ba9bb2215_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3496
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3496 -s 528
  2⤵
  - Program crash
  PID:4908

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3172 -ip 3172
1⤵
PID:1956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3496 -ip 3496
1⤵
PID:1236

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\zichzytp.exe

Filesize
12.3MB

MD5
78fd8e454a9aacd1024a21b98aa17883

SHA1
2cbd7956a260c3f37764cbdb788e7f0bfa38c800

SHA256
2575c60c6873749e3c5b0a530b31d1875c3619f684d7ca65e04e1054c22e7dc3

SHA512
787a04470f7e81994c3f6d5ebe6668b0cfcc6cb5dc6e434123804222ee7ce0a99577ebc777cc1a6b8ac8cde45b92d4cdc1c2f0914c9c33700fb339a3b0bc8ab1

Download Submit
memory/1620-11-0x0000000000BC0000-0x0000000000BD5000-memory.dmp

Filesize
84KB

Download
memory/1620-13-0x0000000000BC0000-0x0000000000BD5000-memory.dmp

Filesize
84KB

Download
memory/1620-14-0x0000000000BC0000-0x0000000000BD5000-memory.dmp

Filesize
84KB

Download
memory/3172-1-0x0000000003570000-0x0000000003670000-memory.dmp

Filesize
1024KB

Download
memory/3172-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3172-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3172-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3172-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3172-7-0x0000000000400000-0x0000000003379000-memory.dmp

Filesize
47.5MB

Download
memory/3496-15-0x0000000000400000-0x0000000003379000-memory.dmp

Filesize
47.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads