tofsee | 1344f45dbbb1a9bd9854fa07e0db70efaa8ebfa6359c645d4d4739a3c06cbda6

General

Target

c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe
Size

14.2MB
MD5

c3d9fe2d943feda5de737a9048437366
SHA1

6b520caa5749359728296add5bcbe968fe4def0f
SHA256

1344f45dbbb1a9bd9854fa07e0db70efaa8ebfa6359c645d4d4739a3c06cbda6
SHA512

66b7e5418e7ba66e5b0b2348fd1046d97cd99bc6857b2d4521081f4a6e4ac6f10c735b29375e4215ed75f86abfdbf4242796cde629d59017fb60ef33f67fb86d
SSDEEP

24576:Kkp7SCOI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI1SDGI+:KG

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
748	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\kodsugog\ImagePath = "C:\\Windows\\SysWOW64\\kodsugog\\ybucacku.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4836	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3504	ybucacku.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3504 set thread context of 4836	3504	ybucacku.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4384	sc.exe
4668	sc.exe
3272	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
4000	3300	WerFault.exe	82
2092	3504	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	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.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	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	ybucacku.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3300 wrote to memory of 4016	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	83
PID 3300 wrote to memory of 4016	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	83
PID 3300 wrote to memory of 4016	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	83
PID 3300 wrote to memory of 3000	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	85
PID 3300 wrote to memory of 3000	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	85
PID 3300 wrote to memory of 3000	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	85
PID 3300 wrote to memory of 4384	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	87
PID 3300 wrote to memory of 4384	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	87
PID 3300 wrote to memory of 4384	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	87
PID 3300 wrote to memory of 4668	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	89
PID 3300 wrote to memory of 4668	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	89
PID 3300 wrote to memory of 4668	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	89
PID 3300 wrote to memory of 3272	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	91
PID 3300 wrote to memory of 3272	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	91
PID 3300 wrote to memory of 3272	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	91
PID 3300 wrote to memory of 748	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	94
PID 3300 wrote to memory of 748	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	94
PID 3300 wrote to memory of 748	3300	c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe	94
PID 3504 wrote to memory of 4836	3504	ybucacku.exe	100
PID 3504 wrote to memory of 4836	3504	ybucacku.exe	100
PID 3504 wrote to memory of 4836	3504	ybucacku.exe	100
PID 3504 wrote to memory of 4836	3504	ybucacku.exe	100
PID 3504 wrote to memory of 4836	3504	ybucacku.exe	100

C:\Users\Admin\AppData\Local\Temp\c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3300
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kodsugog\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4016
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ybucacku.exe" C:\Windows\SysWOW64\kodsugog\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3000
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kodsugog binPath= "C:\Windows\SysWOW64\kodsugog\ybucacku.exe /d\"C:\Users\Admin\AppData\Local\Temp\c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4384
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kodsugog "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kodsugog
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3272
- 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:748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3300 -s 1220
  2⤵
  - Program crash
  PID:4000

C:\Windows\SysWOW64\kodsugog\ybucacku.exe
C:\Windows\SysWOW64\kodsugog\ybucacku.exe /d"C:\Users\Admin\AppData\Local\Temp\c3d9fe2d943feda5de737a9048437366_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3504
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4836
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3504 -s 560
  2⤵
  - Program crash
  PID:2092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3300 -ip 3300
1⤵
PID:3404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3504 -ip 3504
1⤵
PID:2824

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\ybucacku.exe

Filesize
14.2MB

MD5
c3d9fe2d943feda5de737a9048437366

SHA1
6b520caa5749359728296add5bcbe968fe4def0f

SHA256
1344f45dbbb1a9bd9854fa07e0db70efaa8ebfa6359c645d4d4739a3c06cbda6

SHA512
66b7e5418e7ba66e5b0b2348fd1046d97cd99bc6857b2d4521081f4a6e4ac6f10c735b29375e4215ed75f86abfdbf4242796cde629d59017fb60ef33f67fb86d

Download Submit
memory/3300-9-0x00000000005D0000-0x00000000005E3000-memory.dmp

Filesize
76KB

Download
memory/3300-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3300-2-0x00000000005D0000-0x00000000005E3000-memory.dmp

Filesize
76KB

Download
memory/3300-8-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3300-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3300-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/3504-11-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3504-12-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3504-13-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/3504-18-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4836-16-0x0000000000BF0000-0x0000000000C05000-memory.dmp

Filesize
84KB

Download
memory/4836-14-0x0000000000BF0000-0x0000000000C05000-memory.dmp

Filesize
84KB

Download
memory/4836-17-0x0000000000BF0000-0x0000000000C05000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads