tofsee | f6b4b4a24b69fc750012d93068cfe4ac74b720bcb010d4df213b9e953890380d

Analysis

max time kernel
144s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18/08/2024, 11:23

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General

Target
a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe
Size 11.6MB
Sample240818-ng7e9a1fkh
SHA256 f6b4b4a24b69fc750012d93068cfe4ac74b720bcb010d4df213b9e953890380d
MD5 a696a05e6c1632ede1c088bc58246036
SHA1 7decb949c9d6bb81d5a9fb961111c1ddc9c1d658
SHA512 1b21477b67e42bdfe40a8a2b6df83764ba1643f745b58f02c6d417e7e91c117afe9cbbb98c6551ac2508d20080712c101ed7efd54e8bb2ab647d128b35704be8
SSDEEP 3072:nHZQIswULGiBqwZyNvXT/u22H/PaAf209fB7epgDnESzN57I6ZibkFah/NleJm/F:nHZQItUDBJiPT/u22H3s0DhcHU4l
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru
refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan 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
2236	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\ttjkqptq\ImagePath = "C:\\Windows\\SysWOW64\\ttjkqptq\\nhqanqvh.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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4548	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4316	nhqanqvh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4316 set thread context of 4548	4316	nhqanqvh.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
2220	sc.exe
640	sc.exe
3524	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
1900	4088	WerFault.exe	83
4596	4316	WerFault.exe	97

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe
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	nhqanqvh.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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4088 wrote to memory of 3264	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	87
PID 4088 wrote to memory of 3264	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	87
PID 4088 wrote to memory of 3264	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	87
PID 4088 wrote to memory of 4484	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	89
PID 4088 wrote to memory of 4484	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	89
PID 4088 wrote to memory of 4484	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	89
PID 4088 wrote to memory of 2220	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	91
PID 4088 wrote to memory of 2220	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	91
PID 4088 wrote to memory of 2220	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	91
PID 4088 wrote to memory of 640	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	93
PID 4088 wrote to memory of 640	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	93
PID 4088 wrote to memory of 640	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	93
PID 4088 wrote to memory of 3524	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	95
PID 4088 wrote to memory of 3524	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	95
PID 4088 wrote to memory of 3524	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	95
PID 4088 wrote to memory of 2236	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	98
PID 4088 wrote to memory of 2236	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	98
PID 4088 wrote to memory of 2236	4088	a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe	98
PID 4316 wrote to memory of 4548	4316	nhqanqvh.exe	103
PID 4316 wrote to memory of 4548	4316	nhqanqvh.exe	103
PID 4316 wrote to memory of 4548	4316	nhqanqvh.exe	103
PID 4316 wrote to memory of 4548	4316	nhqanqvh.exe	103
PID 4316 wrote to memory of 4548	4316	nhqanqvh.exe	103

C:\Users\Admin\AppData\Local\Temp\a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ttjkqptq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3264
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nhqanqvh.exe" C:\Windows\SysWOW64\ttjkqptq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4484
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ttjkqptq binPath= "C:\Windows\SysWOW64\ttjkqptq\nhqanqvh.exe /d\"C:\Users\Admin\AppData\Local\Temp\a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2220
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ttjkqptq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:640
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ttjkqptq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3524
- 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:2236
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4088 -s 1200
  2⤵
  - Program crash
  PID:1900

C:\Windows\SysWOW64\ttjkqptq\nhqanqvh.exe
C:\Windows\SysWOW64\ttjkqptq\nhqanqvh.exe /d"C:\Users\Admin\AppData\Local\Temp\a696a05e6c1632ede1c088bc58246036_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4316
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4548
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4316 -s 508
  2⤵
  - Program crash
  PID:4596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4088 -ip 4088
1⤵
PID:928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4316 -ip 4316
1⤵
PID:4912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

nhqanqvh.exe

Path C:\Users\Admin\AppData\Local\Temp\nhqanqvh.exe
Size 10.8MB
SHA256 ec0c129e114caa75a1ad68de5075ea41f25873defdb6eda3abc0ed5e71834722
MD5 0858013880e3ba5817384578fe374661
SHA1 c73a45ed082ccf0189d15d5318148a3adc97debe
SHA512 79badb09cfc391fa9a3aa556dfa371028a9d562d705526861a1850aafb5a879a809b58d4199cb117413a715ab10e727abbf8a2e29de06d2d9d1c7675fb72ba37
SSDEEP 3072:+HZQIswULGiBqwZyNvXT/u22H/PaAf209fB7epgDnESzN57I6ZibkFah/NleJm/S:+HZQItUDBJiPT/u22H3s0DhcHU4l
MD5 SHA1 SHA512 SSDEEP

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memory/4088-8-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/4088-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4088-1-0x0000000000510000-0x0000000000610000-memory.dmp

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memory/4088-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4088-9-0x0000000000450000-0x0000000000463000-memory.dmp

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memory/4088-2-0x0000000000450000-0x0000000000463000-memory.dmp

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memory/4316-11-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/4316-12-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/4316-13-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/4316-19-0x0000000000400000-0x000000000044D000-memory.dmp

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memory/4548-14-0x0000000000380000-0x0000000000395000-memory.dmp

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memory/4548-16-0x0000000000380000-0x0000000000395000-memory.dmp

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memory/4548-17-0x0000000000380000-0x0000000000395000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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