tofsee | cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6

General

Target

JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe
Size

316KB
MD5

43d834f11fd8031dbcbba48f168447fe
SHA1

a66fa5a150db13a503f7bbe61349e230b70200ad
SHA256

cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6
SHA512

6aefca2f0b7bb4c41f986a730c1e13ef8cd71f9cd0883ae29fe1330bdc3972e5a0fcc1f7782f2a69ad4fcd77f653551e4aa5f397b2fccb00447f03d70252fbea
SSDEEP

6144:p5NbF5iFmK7Tm8krgjIENQgLFDJHjYWwftZ2mi3tj:8FN7Tm8krgjIENQgLFDJDwfk39

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
3504	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\gnlkyuxc\ImagePath = "C:\\Windows\\SysWOW64\\gnlkyuxc\\havhlal.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_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe

Deletes itself 1 IoCs

pid	Process
388	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2728	havhlal.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2728 set thread context of 388	2728	havhlal.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
1812	sc.exe
2268	sc.exe
3628	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
1032	5084	WerFault.exe	82
1192	2728	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	netsh.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	havhlal.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5084 wrote to memory of 1696	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	83
PID 5084 wrote to memory of 1696	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	83
PID 5084 wrote to memory of 1696	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	83
PID 5084 wrote to memory of 3800	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	85
PID 5084 wrote to memory of 3800	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	85
PID 5084 wrote to memory of 3800	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	85
PID 5084 wrote to memory of 1812	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	87
PID 5084 wrote to memory of 1812	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	87
PID 5084 wrote to memory of 1812	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	87
PID 5084 wrote to memory of 2268	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	89
PID 5084 wrote to memory of 2268	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	89
PID 5084 wrote to memory of 2268	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	89
PID 5084 wrote to memory of 3628	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	91
PID 5084 wrote to memory of 3628	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	91
PID 5084 wrote to memory of 3628	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	91
PID 5084 wrote to memory of 3504	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	96
PID 5084 wrote to memory of 3504	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	96
PID 5084 wrote to memory of 3504	5084	JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe	96
PID 2728 wrote to memory of 388	2728	havhlal.exe	104
PID 2728 wrote to memory of 388	2728	havhlal.exe	104
PID 2728 wrote to memory of 388	2728	havhlal.exe	104
PID 2728 wrote to memory of 388	2728	havhlal.exe	104
PID 2728 wrote to memory of 388	2728	havhlal.exe	104

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gnlkyuxc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\havhlal.exe" C:\Windows\SysWOW64\gnlkyuxc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gnlkyuxc binPath= "C:\Windows\SysWOW64\gnlkyuxc\havhlal.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1812
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gnlkyuxc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2268
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gnlkyuxc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3628
- 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:3504
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5084 -s 1188
  2⤵
  - Program crash
  PID:1032

C:\Windows\SysWOW64\gnlkyuxc\havhlal.exe
C:\Windows\SysWOW64\gnlkyuxc\havhlal.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cdb4cf1445c3d7c32de55258685d9565ea268d7ddca0d64cf4c8c7600fa039b6.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2728
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2728 -s 532
  2⤵
  - Program crash
  PID:1192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 5084 -ip 5084
1⤵
PID:4868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2728 -ip 2728
1⤵
PID:4808

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\havhlal.exe

Filesize
12.9MB

MD5
fa2ac549ba2df7720d9d1db8c2dbd218

SHA1
e164f702b2c9ec6a692647a90d842668a92e90d1

SHA256
cced2d676f5e3f33ecea545b9fe7cce319486c1448b46a2566e4cb9b14da5e80

SHA512
64848b41994ef10a51cc6dc8ea9ea4bfa2afe467c9002c49ed597dab60568ab88e5c1af8533821e1a1e8dc15683030e61819670f197f9dc92101360f922c3a33

Download Submit
memory/388-13-0x0000000000390000-0x00000000003A5000-memory.dmp

Filesize
84KB

Download
memory/388-11-0x0000000000390000-0x00000000003A5000-memory.dmp

Filesize
84KB

Download
memory/388-14-0x0000000000390000-0x00000000003A5000-memory.dmp

Filesize
84KB

Download
memory/2728-15-0x0000000000400000-0x0000000002776000-memory.dmp

Filesize
35.5MB

Download
memory/5084-1-0x00000000029D0000-0x0000000002AD0000-memory.dmp

Filesize
1024KB

Download
memory/5084-2-0x0000000002920000-0x0000000002933000-memory.dmp

Filesize
76KB

Download
memory/5084-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5084-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5084-8-0x0000000002920000-0x0000000002933000-memory.dmp

Filesize
76KB

Download
memory/5084-7-0x0000000000400000-0x0000000002776000-memory.dmp

Filesize
35.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads