tofsee | 6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6

General

Target

JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe
Size

207KB
MD5

9ed714920910dff67ae47f7d2ff5dcd3
SHA1

1a0329735aa0436ebd5befb4b12a384ce2f599ea
SHA256

6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6
SHA512

e7bad0e63da94fcbae54c7a91b9a8e6dc42d77bcd3eb6b6af1593c43348659be36cd803bd773f5c414d1bee877e84771bff5962873c45e9cc2de128fc6e1e526
SSDEEP

3072:QhwfshmkAN3skS5A9fms6UuY4Xwoh5D4VLSQEOJH3hONr57v75FEJLB:QT96/4UuY4J4z5JHxG57vFFE

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
2604	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\nzijsfnf\ImagePath = "C:\\Windows\\SysWOW64\\nzijsfnf\\wzxsmtdn.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe

Deletes itself 1 IoCs

pid	Process
2616	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4008	wzxsmtdn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4008 set thread context of 2616	4008	wzxsmtdn.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
660	sc.exe
4024	sc.exe
5024	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
3776	628	WerFault.exe	83
4316	4008	WerFault.exe	95

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wzxsmtdn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.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	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 3588	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	85
PID 628 wrote to memory of 3588	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	85
PID 628 wrote to memory of 3588	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	85
PID 628 wrote to memory of 3560	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	87
PID 628 wrote to memory of 3560	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	87
PID 628 wrote to memory of 3560	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	87
PID 628 wrote to memory of 660	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	89
PID 628 wrote to memory of 660	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	89
PID 628 wrote to memory of 660	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	89
PID 628 wrote to memory of 4024	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	91
PID 628 wrote to memory of 4024	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	91
PID 628 wrote to memory of 4024	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	91
PID 628 wrote to memory of 5024	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	93
PID 628 wrote to memory of 5024	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	93
PID 628 wrote to memory of 5024	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	93
PID 628 wrote to memory of 2604	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	96
PID 628 wrote to memory of 2604	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	96
PID 628 wrote to memory of 2604	628	JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe	96
PID 4008 wrote to memory of 2616	4008	wzxsmtdn.exe	102
PID 4008 wrote to memory of 2616	4008	wzxsmtdn.exe	102
PID 4008 wrote to memory of 2616	4008	wzxsmtdn.exe	102
PID 4008 wrote to memory of 2616	4008	wzxsmtdn.exe	102
PID 4008 wrote to memory of 2616	4008	wzxsmtdn.exe	102

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:628
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nzijsfnf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3588
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wzxsmtdn.exe" C:\Windows\SysWOW64\nzijsfnf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3560
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nzijsfnf binPath= "C:\Windows\SysWOW64\nzijsfnf\wzxsmtdn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nzijsfnf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4024
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nzijsfnf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5024
- 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:2604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 628 -s 1216
  2⤵
  - Program crash
  PID:3776

C:\Windows\SysWOW64\nzijsfnf\wzxsmtdn.exe
C:\Windows\SysWOW64\nzijsfnf\wzxsmtdn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6adcc2a8d8f0a5f7d49879248ee9a3f6bd1b6528165751eb6806897824ab9af6.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4008
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4008 -s 532
  2⤵
  - Program crash
  PID:4316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 628 -ip 628
1⤵
PID:4620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4008 -ip 4008
1⤵
PID:3920

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\wzxsmtdn.exe

Filesize
12.7MB

MD5
f610e8bd95db6ffc82f5f2f29605d330

SHA1
225d6aeba25dd977bfb1abde9d700bd37c2426e0

SHA256
597fbbdf99f5f879e853566fb6e8ab8a12a5433ffed49ed9a71acdbc68e3a167

SHA512
b067f226bedfb321e229dbbf80ddad3b939f83f82f11e062606f72b5f4f69d1ca85c65a1aa4caf974b6e078f65d2d80100e9ffe6331646c87e7910ce0b0e2169

Download Submit
memory/628-9-0x0000000000860000-0x0000000000873000-memory.dmp

Filesize
76KB

Download
memory/628-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/628-2-0x0000000000860000-0x0000000000873000-memory.dmp

Filesize
76KB

Download
memory/628-8-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/628-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/628-1-0x0000000000880000-0x0000000000980000-memory.dmp

Filesize
1024KB

Download
memory/2616-14-0x00000000006E0000-0x00000000006F5000-memory.dmp

Filesize
84KB

Download
memory/2616-16-0x00000000006E0000-0x00000000006F5000-memory.dmp

Filesize
84KB

Download
memory/2616-17-0x00000000006E0000-0x00000000006F5000-memory.dmp

Filesize
84KB

Download
memory/4008-11-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/4008-12-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/4008-13-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download
memory/4008-18-0x0000000000400000-0x00000000004B9000-memory.dmp

Filesize
740KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads