tofsee | 621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02

General

Target

JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe
Size

220KB
MD5

5c43af858cebe82b1ad78c645061cc44
SHA1

5babb64955d52797a58604a9aef14d689e90d35f
SHA256

621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02
SHA512

2d2c7e9483b0b13dd8cabbbc5d1218fe0acdac78f1c676c8fc302e91c3d11cf44ea5f2c3ea53bbfa125e60769f1c99b0da9e27fc05c7f2a743116915aec39c60
SSDEEP

3072:IUlCE+24yRwiP95GXu0bJ/rWrxpzbgqru+sxkgaBChmx/LI03qbN:ZV+Tybjijuzbgwu7igaQk

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.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
1400	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\tjzglqln\ImagePath = "C:\\Windows\\SysWOW64\\tjzglqln\\ekfiraav.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe

Deletes itself 1 IoCs

pid	Process
4380	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3116	ekfiraav.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3116 set thread context of 4380	3116	ekfiraav.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
4464	sc.exe
520	sc.exe
2296	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
2168	3116	WerFault.exe	94
2148	1460	WerFault.exe	82

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	ekfiraav.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_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1460 wrote to memory of 1280	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	83
PID 1460 wrote to memory of 1280	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	83
PID 1460 wrote to memory of 1280	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	83
PID 1460 wrote to memory of 3256	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	85
PID 1460 wrote to memory of 3256	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	85
PID 1460 wrote to memory of 3256	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	85
PID 1460 wrote to memory of 4464	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	87
PID 1460 wrote to memory of 4464	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	87
PID 1460 wrote to memory of 4464	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	87
PID 1460 wrote to memory of 520	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	89
PID 1460 wrote to memory of 520	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	89
PID 1460 wrote to memory of 520	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	89
PID 1460 wrote to memory of 2296	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	92
PID 1460 wrote to memory of 2296	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	92
PID 1460 wrote to memory of 2296	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	92
PID 1460 wrote to memory of 1400	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	95
PID 1460 wrote to memory of 1400	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	95
PID 1460 wrote to memory of 1400	1460	JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe	95
PID 3116 wrote to memory of 4380	3116	ekfiraav.exe	99
PID 3116 wrote to memory of 4380	3116	ekfiraav.exe	99
PID 3116 wrote to memory of 4380	3116	ekfiraav.exe	99
PID 3116 wrote to memory of 4380	3116	ekfiraav.exe	99
PID 3116 wrote to memory of 4380	3116	ekfiraav.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1460
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tjzglqln\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1280
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ekfiraav.exe" C:\Windows\SysWOW64\tjzglqln\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3256
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tjzglqln binPath= "C:\Windows\SysWOW64\tjzglqln\ekfiraav.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4464
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tjzglqln "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:520
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tjzglqln
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2296
- 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:1400
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1460 -s 1036
  2⤵
  - Program crash
  PID:2148

C:\Windows\SysWOW64\tjzglqln\ekfiraav.exe
C:\Windows\SysWOW64\tjzglqln\ekfiraav.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_621af9ea3a44e4fab71237e384a0ca3808339d2d566a1b0144af74fe9d48bd02.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3116
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3116 -s 512
  2⤵
  - Program crash
  PID:2168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1460 -ip 1460
1⤵
PID:2380

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 3116 -ip 3116
1⤵
PID:2136

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\ekfiraav.exe

Filesize
10.7MB

MD5
1dd48a39f81e91e4a07c508678560fb2

SHA1
71fde92b7f4607ae1427d46d2fa6a751fad04c3d

SHA256
85aaaccd6239b2518afc7ef0e58067a95ff8dd3636c3d9e975c290a0270aaa10

SHA512
767d875954f1e707b48ba8e75970a70f03535c09c5e1c385c294fff1e8a6988ea8533540fbadf2084dc9136175f0b1be7ce062214da62b5a71fff5d31e8fdfb0

Download Submit
memory/1460-14-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/1460-1-0x0000000000700000-0x0000000000713000-memory.dmp

Filesize
76KB

Download
memory/1460-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1460-0-0x00000000005E0000-0x00000000005ED000-memory.dmp

Filesize
52KB

Download
memory/1460-15-0x00000000005E0000-0x00000000005ED000-memory.dmp

Filesize
52KB

Download
memory/1460-16-0x0000000000700000-0x0000000000713000-memory.dmp

Filesize
76KB

Download
memory/1460-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3116-6-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/3116-13-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/3116-7-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/4380-11-0x0000000000C10000-0x0000000000C25000-memory.dmp

Filesize
84KB

Download
memory/4380-8-0x0000000000C10000-0x0000000000C25000-memory.dmp

Filesize
84KB

Download
memory/4380-18-0x0000000000C10000-0x0000000000C25000-memory.dmp

Filesize
84KB

Download
memory/4380-19-0x0000000000C10000-0x0000000000C25000-memory.dmp

Filesize
84KB

Download
memory/4380-20-0x0000000000C10000-0x0000000000C25000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads