tofsee | bf11cd8920154f9330b71da56340963b22b765af777e1badd3a8d604c1bcc141

General

Target

1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe
Size

12.8MB
MD5

1846e3f99d0485fb6d54c8f82f8898a3
SHA1

fb6e9b990100f957a922c36589b4cfffebc8ebd5
SHA256

bf11cd8920154f9330b71da56340963b22b765af777e1badd3a8d604c1bcc141
SHA512

019aeb67cb5de71ade86a9945628c8b2d7d33aa5650d314a892f3f5f851baad6ce3d405aacecdf57591f88ed804b0f75533532dfcec9aa510c7ffe08ed0eae65
SSDEEP

24576:+oGUbmtvDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD7:S9t

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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
1076	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\sppwdppl\ImagePath = "C:\\Windows\\SysWOW64\\sppwdppl\\myfzekxf.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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
224	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2808	myfzekxf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2808 set thread context of 224	2808	myfzekxf.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
2420	sc.exe
1844	sc.exe
4936	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
1140	3436	WerFault.exe	82
3208	2808	WerFault.exe	93

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	myfzekxf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1846e3f99d0485fb6d54c8f82f8898a3_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3436 wrote to memory of 3028	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	83
PID 3436 wrote to memory of 3028	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	83
PID 3436 wrote to memory of 3028	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	83
PID 3436 wrote to memory of 872	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	85
PID 3436 wrote to memory of 872	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	85
PID 3436 wrote to memory of 872	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	85
PID 3436 wrote to memory of 2420	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	87
PID 3436 wrote to memory of 2420	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	87
PID 3436 wrote to memory of 2420	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	87
PID 3436 wrote to memory of 1844	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	89
PID 3436 wrote to memory of 1844	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	89
PID 3436 wrote to memory of 1844	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	89
PID 3436 wrote to memory of 4936	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	91
PID 3436 wrote to memory of 4936	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	91
PID 3436 wrote to memory of 4936	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	91
PID 3436 wrote to memory of 1076	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	94
PID 3436 wrote to memory of 1076	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	94
PID 3436 wrote to memory of 1076	3436	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	94
PID 2808 wrote to memory of 224	2808	myfzekxf.exe	99
PID 2808 wrote to memory of 224	2808	myfzekxf.exe	99
PID 2808 wrote to memory of 224	2808	myfzekxf.exe	99
PID 2808 wrote to memory of 224	2808	myfzekxf.exe	99
PID 2808 wrote to memory of 224	2808	myfzekxf.exe	99

C:\Users\Admin\AppData\Local\Temp\1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3436
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sppwdppl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3028
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\myfzekxf.exe" C:\Windows\SysWOW64\sppwdppl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:872
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sppwdppl binPath= "C:\Windows\SysWOW64\sppwdppl\myfzekxf.exe /d\"C:\Users\Admin\AppData\Local\Temp\1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2420
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sppwdppl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1844
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sppwdppl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4936
- 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:1076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3436 -s 1040
  2⤵
  - Program crash
  PID:1140

C:\Windows\SysWOW64\sppwdppl\myfzekxf.exe
C:\Windows\SysWOW64\sppwdppl\myfzekxf.exe /d"C:\Users\Admin\AppData\Local\Temp\1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2808
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:224
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2808 -s 528
  2⤵
  - Program crash
  PID:3208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3436 -ip 3436
1⤵
PID:220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2808 -ip 2808
1⤵
PID:1480

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\myfzekxf.exe

Filesize
10.7MB

MD5
86ed6372db2fbbc1d83c1aa486298985

SHA1
f7f12765486312c89675f072616e528cedd89c6c

SHA256
59198fba76d3391490ee53009e3d30125ca7d0e32af079758395063252bce7c1

SHA512
7eaac9e787aaca30c0c2d43e6d2a1cd99d0d134e87079ad0389dbb399f78a3c10efefcd20b7800344e394288dcf495ad32267d070b28529bee12ab827bca69c2

Download Submit
memory/224-11-0x0000000001060000-0x0000000001075000-memory.dmp

Filesize
84KB

Download
memory/224-13-0x0000000001060000-0x0000000001075000-memory.dmp

Filesize
84KB

Download
memory/224-14-0x0000000001060000-0x0000000001075000-memory.dmp

Filesize
84KB

Download
memory/2808-15-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/3436-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3436-1-0x0000000002D80000-0x0000000002E80000-memory.dmp

Filesize
1024KB

Download
memory/3436-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3436-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3436-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3436-8-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads