tofsee | 82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3

General

Target

JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe
Size

260KB
MD5

e7d738f6e1345dab0f39cc246f252a51
SHA1

047a32c253e10070201ddb8c42559f463279c08a
SHA256

82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3
SHA512

7bcb0e1b8a39d9e36cf136c0fe7b330e0cffed1d9ef9b8746f8edf260e46e7ec658ed24ba1b810f474d661a06e8d579ebffdbc8c3d811efb23d61b2bc6fb829d
SSDEEP

3072:Q4iCVSdVB63QbxnVIFgy2Vt19Itux5sVggjcGkNIVqIOM/h38RaoBIGvj7:PxSdVBAQlnVImHtItuk7ITsqx1awb7

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

patmushta.info

ovicrush.cn

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
3816	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\nmazvtqd\ImagePath = "C:\\Windows\\SysWOW64\\nmazvtqd\\xkcykdg.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe

Deletes itself 1 IoCs

pid	Process
3476	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3984	xkcykdg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3984 set thread context of 3476	3984	xkcykdg.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3196	sc.exe
3296	sc.exe
4604	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
4424	2548	WerFault.exe	81
1908	3984	WerFault.exe	92

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xkcykdg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 3292	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	82
PID 2548 wrote to memory of 3292	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	82
PID 2548 wrote to memory of 3292	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	82
PID 2548 wrote to memory of 3572	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	84
PID 2548 wrote to memory of 3572	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	84
PID 2548 wrote to memory of 3572	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	84
PID 2548 wrote to memory of 3196	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	86
PID 2548 wrote to memory of 3196	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	86
PID 2548 wrote to memory of 3196	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	86
PID 2548 wrote to memory of 3296	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	88
PID 2548 wrote to memory of 3296	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	88
PID 2548 wrote to memory of 3296	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	88
PID 2548 wrote to memory of 4604	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	90
PID 2548 wrote to memory of 4604	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	90
PID 2548 wrote to memory of 4604	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	90
PID 2548 wrote to memory of 3816	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	93
PID 2548 wrote to memory of 3816	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	93
PID 2548 wrote to memory of 3816	2548	JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe	93
PID 3984 wrote to memory of 3476	3984	xkcykdg.exe	98
PID 3984 wrote to memory of 3476	3984	xkcykdg.exe	98
PID 3984 wrote to memory of 3476	3984	xkcykdg.exe	98
PID 3984 wrote to memory of 3476	3984	xkcykdg.exe	98
PID 3984 wrote to memory of 3476	3984	xkcykdg.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nmazvtqd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3292
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xkcykdg.exe" C:\Windows\SysWOW64\nmazvtqd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3572
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nmazvtqd binPath= "C:\Windows\SysWOW64\nmazvtqd\xkcykdg.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3196
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nmazvtqd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3296
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nmazvtqd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4604
- 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:3816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2548 -s 1040
  2⤵
  - Program crash
  PID:4424

C:\Windows\SysWOW64\nmazvtqd\xkcykdg.exe
C:\Windows\SysWOW64\nmazvtqd\xkcykdg.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_82939f0d515a95bd2bcff9704a3526983d1887930bd42676cb477e4566a5f9a3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3984
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3476
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3984 -s 528
  2⤵
  - Program crash
  PID:1908

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2548 -ip 2548
1⤵
PID:1824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3984 -ip 3984
1⤵
PID:3624

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\xkcykdg.exe

Filesize
13.0MB

MD5
9f77767c0efd23d856d36a86ddac4013

SHA1
4e95657e95ce0f30e742cf5c03d82dd7c70e2eea

SHA256
e9b53a107ba9cec8dbe1db2fa51b150e0fe748723a52eceac4c84b369911df24

SHA512
bc92d17a307d0bcc9d3f09620f69346f74acde41aa04f7d2800f5858cee33da5e492b53f3eb8b35fb9795c364f3c2367eb744589732445e0e6ef115c9a3c728b

Download Submit
memory/2548-0-0x0000000000900000-0x000000000090D000-memory.dmp

Filesize
52KB

Download
memory/2548-1-0x00000000023B0000-0x00000000023C3000-memory.dmp

Filesize
76KB

Download
memory/2548-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2548-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2548-8-0x00000000023B0000-0x00000000023C3000-memory.dmp

Filesize
76KB

Download
memory/2548-7-0x0000000000900000-0x000000000090D000-memory.dmp

Filesize
52KB

Download
memory/2548-6-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download
memory/3476-10-0x00000000010C0000-0x00000000010D5000-memory.dmp

Filesize
84KB

Download
memory/3476-12-0x00000000010C0000-0x00000000010D5000-memory.dmp

Filesize
84KB

Download
memory/3476-13-0x00000000010C0000-0x00000000010D5000-memory.dmp

Filesize
84KB

Download
memory/3984-14-0x0000000000400000-0x000000000065A000-memory.dmp

Filesize
2.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads