tofsee | e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef

General

Target

JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe
Size

287KB
MD5

f8c4e7377e1e2c004785641eb1ac23b9
SHA1

2cc839dc523d85058144d5d8f98e16665750ebd2
SHA256

e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef
SHA512

484bd7ead8788031732df37084fd7d84b2e6c8768a88c0ec519bdd767dc20af6c898d61586915e49d95db12b16cde3cdbd8096b3899e5d27ccf91b4092b8aab6
SSDEEP

6144:QidOABJIY38y2btsv96WhaznPPkyyr9Z1wmkE:QiEEJl38Ftsv96mek79Z1wmkE

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
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
4996	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\lyfenhbg\ImagePath = "C:\\Windows\\SysWOW64\\lyfenhbg\\tfaxeddr.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe

Deletes itself 1 IoCs

pid	Process
1372	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1056	tfaxeddr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1056 set thread context of 1372	1056	tfaxeddr.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
228	sc.exe
1748	sc.exe
212	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2512	2172	WerFault.exe	82
4828	1056	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.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	tfaxeddr.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 4868	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	83
PID 2172 wrote to memory of 4868	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	83
PID 2172 wrote to memory of 4868	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	83
PID 2172 wrote to memory of 3228	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	85
PID 2172 wrote to memory of 3228	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	85
PID 2172 wrote to memory of 3228	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	85
PID 2172 wrote to memory of 228	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	87
PID 2172 wrote to memory of 228	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	87
PID 2172 wrote to memory of 228	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	87
PID 2172 wrote to memory of 1748	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	89
PID 2172 wrote to memory of 1748	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	89
PID 2172 wrote to memory of 1748	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	89
PID 2172 wrote to memory of 212	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	91
PID 2172 wrote to memory of 212	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	91
PID 2172 wrote to memory of 212	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	91
PID 2172 wrote to memory of 4996	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	94
PID 2172 wrote to memory of 4996	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	94
PID 2172 wrote to memory of 4996	2172	JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe	94
PID 1056 wrote to memory of 1372	1056	tfaxeddr.exe	100
PID 1056 wrote to memory of 1372	1056	tfaxeddr.exe	100
PID 1056 wrote to memory of 1372	1056	tfaxeddr.exe	100
PID 1056 wrote to memory of 1372	1056	tfaxeddr.exe	100
PID 1056 wrote to memory of 1372	1056	tfaxeddr.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lyfenhbg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4868
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tfaxeddr.exe" C:\Windows\SysWOW64\lyfenhbg\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lyfenhbg binPath= "C:\Windows\SysWOW64\lyfenhbg\tfaxeddr.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lyfenhbg "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lyfenhbg
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:212
- 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:4996
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2172 -s 808
  2⤵
  - Program crash
  PID:2512

C:\Windows\SysWOW64\lyfenhbg\tfaxeddr.exe
C:\Windows\SysWOW64\lyfenhbg\tfaxeddr.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e9c5f7ff4cfedc621c43b580eed6808c159348401a29f1446ac6cccc841787ef.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1056
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1372
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1056 -s 524
  2⤵
  - Program crash
  PID:4828

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2172 -ip 2172
1⤵
PID:3368

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1056 -ip 1056
1⤵
PID:4936

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\tfaxeddr.exe

Filesize
10.3MB

MD5
9dba7cca6628b7b37c906f2c01cf1080

SHA1
0c7ccefdf74ca91c0cc2788f20526d136213fbdf

SHA256
a5f52ee35fc98a52ddf8dc0be2e1bc3fc4164929eb753d172add34afd75f4ac1

SHA512
3ef13758d5d8e7ffbdd931b574cec49be06c28509daebda07a15863d4ebe1d36cab5bf015ac3e561ad8e51194138885e6c3c9754a2d40d25d8ed8a0bf854701c

Download Submit
memory/1056-15-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/1372-11-0x0000000000D70000-0x0000000000D85000-memory.dmp

Filesize
84KB

Download
memory/1372-13-0x0000000000D70000-0x0000000000D85000-memory.dmp

Filesize
84KB

Download
memory/1372-14-0x0000000000D70000-0x0000000000D85000-memory.dmp

Filesize
84KB

Download
memory/2172-1-0x0000000002D80000-0x0000000002E80000-memory.dmp

Filesize
1024KB

Download
memory/2172-2-0x0000000002D00000-0x0000000002D13000-memory.dmp

Filesize
76KB

Download
memory/2172-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2172-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2172-9-0x0000000002D00000-0x0000000002D13000-memory.dmp

Filesize
76KB

Download
memory/2172-8-0x0000000000400000-0x0000000002B90000-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