tofsee | f3b00c122ad21183addcef9d57004601806e04ddeb3a3b3165573380c52f6697

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
24/07/2024, 00:02

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General

Target
697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe
Size 13.4MB
Sample240724-abmxrszbrd
SHA256 f3b00c122ad21183addcef9d57004601806e04ddeb3a3b3165573380c52f6697
MD5 697e454ef3dd9e8d48fb61cecd2cf76b
SHA1 1b0e44aa941afff708b3704d618cc3e69dc1ed83
SHA512 6488dd2c8270940ead98a083577390a5368a5402a759b1c23cb4bb9268e978d7456f44f834840dd63cb96515b488d782643619148e47bce682399fe390ea05ca
SSDEEP 196608:cXPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPv:c
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
4264	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\dbglrlfw\ImagePath = "C:\\Windows\\SysWOW64\\dbglrlfw\\qfsoazse.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-1-5-21-384068567-2943195810-3631207890-1000\Control Panel\International\Geo\Nation	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1812	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3588	qfsoazse.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3588 set thread context of 1812	3588	qfsoazse.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
4868	sc.exe
800	sc.exe
1624	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
948	3068	WerFault.exe	83
3448	3588	WerFault.exe	101

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	qfsoazse.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
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	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3068 wrote to memory of 208	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	87
PID 3068 wrote to memory of 208	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	87
PID 3068 wrote to memory of 208	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	87
PID 3068 wrote to memory of 4872	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	89
PID 3068 wrote to memory of 4872	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	89
PID 3068 wrote to memory of 4872	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	89
PID 3068 wrote to memory of 4868	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	93
PID 3068 wrote to memory of 4868	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	93
PID 3068 wrote to memory of 4868	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	93
PID 3068 wrote to memory of 800	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	95
PID 3068 wrote to memory of 800	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	95
PID 3068 wrote to memory of 800	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	95
PID 3068 wrote to memory of 1624	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	99
PID 3068 wrote to memory of 1624	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	99
PID 3068 wrote to memory of 1624	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	99
PID 3068 wrote to memory of 4264	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	102
PID 3068 wrote to memory of 4264	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	102
PID 3068 wrote to memory of 4264	3068	697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe	102
PID 3588 wrote to memory of 1812	3588	qfsoazse.exe	107
PID 3588 wrote to memory of 1812	3588	qfsoazse.exe	107
PID 3588 wrote to memory of 1812	3588	qfsoazse.exe	107
PID 3588 wrote to memory of 1812	3588	qfsoazse.exe	107
PID 3588 wrote to memory of 1812	3588	qfsoazse.exe	107

C:\Users\Admin\AppData\Local\Temp\697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3068
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dbglrlfw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qfsoazse.exe" C:\Windows\SysWOW64\dbglrlfw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4872
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dbglrlfw binPath= "C:\Windows\SysWOW64\dbglrlfw\qfsoazse.exe /d\"C:\Users\Admin\AppData\Local\Temp\697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4868
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dbglrlfw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dbglrlfw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1624
- 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:4264
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3068 -s 596
  2⤵
  - Program crash
  PID:948

C:\Windows\SysWOW64\dbglrlfw\qfsoazse.exe
C:\Windows\SysWOW64\dbglrlfw\qfsoazse.exe /d"C:\Users\Admin\AppData\Local\Temp\697e454ef3dd9e8d48fb61cecd2cf76b_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3588
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3588 -s 228
  2⤵
  - Program crash
  PID:3448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3068 -ip 3068
1⤵
PID:3112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3588 -ip 3588
1⤵
PID:4568

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

qfsoazse.exe

Path C:\Users\Admin\AppData\Local\Temp\qfsoazse.exe
Size 11.3MB
SHA256 a21b93b0b0ec5548d45df9367ef0ebda4c8cebd9ab81b1f89c926ad678b4e373
MD5 3f5e2f001b4bbdb3da8e43d0e15b8d5d
SHA1 7e00ce16b9ea8cb8048c04e4a104374c6ccaa764
SHA512 c5d0ac882dc62552495961a5a2c37986798bef5eb3424193df465fd7c132cecf14f2de9d150e6bb43becc9ddc61023f1ebbb879028c73b541083fb9ac117c7f8
SSDEEP 196608:WXPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPv:W
MD5 SHA1 SHA512 SSDEEP

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memory/1812-15-0x0000000000B70000-0x0000000000B85000-memory.dmp

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memory/1812-13-0x0000000000B70000-0x0000000000B85000-memory.dmp

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memory/1812-17-0x0000000000B70000-0x0000000000B85000-memory.dmp

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memory/3068-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/3068-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/3068-8-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/3068-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/3068-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/3068-1-0x0000000000A60000-0x0000000000B60000-memory.dmp

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memory/3588-11-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/3588-12-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/3588-16-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/3588-19-0x0000000000400000-0x0000000000871000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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