tofsee | e6cda788201b87ab021e3f1544fd61765081e879b52974bd993f7ba9e9271ef9

General

Target

d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe
Size

142KB
MD5

d82fb6f76e190e7d8da96dcf40d3a22c
SHA1

179419aa3c99bcad94516ca4b841be66fd8a491f
SHA256

e6cda788201b87ab021e3f1544fd61765081e879b52974bd993f7ba9e9271ef9
SHA512

7c2f790bb1a133c4d5bed66da661376104a62b717353e80d38b0467ddda0863feac7d5dba4f796848f25ac58b5e9d9441bb82f50f1ca314c68cd75201e2a595d
SSDEEP

3072:lX3VXWiUmL3Q+cPspRvaMnY7Q0qzhBpJ6E5WcWcecvEcpxxc:aKqsXaAYQb/zD

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
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
5036	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\ffmmfynu\ImagePath = "C:\\Windows\\SysWOW64\\ffmmfynu\\fdrdezxd.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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4456	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1332	fdrdezxd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1332 set thread context of 4456	1332	fdrdezxd.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
1320	sc.exe
2364	sc.exe
4892	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

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	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fdrdezxd.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	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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 5016	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	86
PID 1728 wrote to memory of 5016	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	86
PID 1728 wrote to memory of 5016	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	86
PID 1728 wrote to memory of 2604	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	88
PID 1728 wrote to memory of 2604	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	88
PID 1728 wrote to memory of 2604	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	88
PID 1728 wrote to memory of 1320	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	91
PID 1728 wrote to memory of 1320	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	91
PID 1728 wrote to memory of 1320	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	91
PID 1728 wrote to memory of 2364	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	93
PID 1728 wrote to memory of 2364	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	93
PID 1728 wrote to memory of 2364	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	93
PID 1728 wrote to memory of 4892	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	95
PID 1728 wrote to memory of 4892	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	95
PID 1728 wrote to memory of 4892	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	95
PID 1728 wrote to memory of 5036	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	98
PID 1728 wrote to memory of 5036	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	98
PID 1728 wrote to memory of 5036	1728	d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe	98
PID 1332 wrote to memory of 4456	1332	fdrdezxd.exe	100
PID 1332 wrote to memory of 4456	1332	fdrdezxd.exe	100
PID 1332 wrote to memory of 4456	1332	fdrdezxd.exe	100
PID 1332 wrote to memory of 4456	1332	fdrdezxd.exe	100
PID 1332 wrote to memory of 4456	1332	fdrdezxd.exe	100

C:\Users\Admin\AppData\Local\Temp\d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ffmmfynu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5016
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fdrdezxd.exe" C:\Windows\SysWOW64\ffmmfynu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2604
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ffmmfynu binPath= "C:\Windows\SysWOW64\ffmmfynu\fdrdezxd.exe /d\"C:\Users\Admin\AppData\Local\Temp\d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1320
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ffmmfynu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2364
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ffmmfynu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4892
- 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:5036

C:\Windows\SysWOW64\ffmmfynu\fdrdezxd.exe
C:\Windows\SysWOW64\ffmmfynu\fdrdezxd.exe /d"C:\Users\Admin\AppData\Local\Temp\d82fb6f76e190e7d8da96dcf40d3a22c_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1332
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4456

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\fdrdezxd.exe

Filesize
14.2MB

MD5
36711ebfa76124d0afbb9721c087973a

SHA1
f63b612e469b096a042468b3245ab662218aca42

SHA256
84727a2fc3d6992ac129b24f1f31ba9d34d642c05a5a234cf67e4df3fa934a84

SHA512
637ec13b9ce690d3cf78d9b05b95a8983cadf8c902e24f370bf75fd47342dede8f91484ca988f0da546632cf37549f634b81f12d9239409df88e5c97fff2606e

Download Submit
memory/1332-8-0x0000000000970000-0x0000000000971000-memory.dmp

Filesize
4KB

Download
memory/1332-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1332-10-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1728-0-0x00000000009D0000-0x00000000009D1000-memory.dmp

Filesize
4KB

Download
memory/1728-1-0x00000000024D0000-0x00000000024D1000-memory.dmp

Filesize
4KB

Download
memory/1728-2-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1728-6-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4456-9-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/4456-11-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/4456-12-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download
memory/4456-13-0x0000000000B10000-0x0000000000B25000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads