tofsee | 8b82f086830e4f70df38b1877d4b31a3d5552e32a5cb5759f33a7582c5dbe921

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
19/07/2024, 06:35

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General

Target
5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe
Size 13.2MB
Sample240719-hca9csxbkn
SHA256 8b82f086830e4f70df38b1877d4b31a3d5552e32a5cb5759f33a7582c5dbe921
MD5 5ad636415ef21eb9962689d4c2c6876f
SHA1 eca1b82ba04b017443d63ac33d6b194b4036868b
SHA512 94b16ad050d86cdd2f225ed95b17fb27ac8f1857fb7241a1a3c792370ffaebe93bf782cff093d3490d276e724d000d5930e886799f8343fbda50e595eb0e8083
SSDEEP 196608:xXPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPH:x
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee 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
4908	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\gihecno\ImagePath = "C:\\Windows\\SysWOW64\\gihecno\\krdqzmnh.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-1-5-21-2650514177-1034912467-4025611726-1000\Control Panel\International\Geo\Nation	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
64	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3924	krdqzmnh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3924 set thread context of 64	3924	krdqzmnh.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
4948	sc.exe
4976	sc.exe
4372	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1728	1660	WerFault.exe	83
4128	3924	WerFault.exe	99

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 3240	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	87
PID 1660 wrote to memory of 3240	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	87
PID 1660 wrote to memory of 3240	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	87
PID 1660 wrote to memory of 2480	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	89
PID 1660 wrote to memory of 2480	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	89
PID 1660 wrote to memory of 2480	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	89
PID 1660 wrote to memory of 4948	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	91
PID 1660 wrote to memory of 4948	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	91
PID 1660 wrote to memory of 4948	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	91
PID 1660 wrote to memory of 4976	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	93
PID 1660 wrote to memory of 4976	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	93
PID 1660 wrote to memory of 4976	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	93
PID 1660 wrote to memory of 4372	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	95
PID 1660 wrote to memory of 4372	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	95
PID 1660 wrote to memory of 4372	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	95
PID 1660 wrote to memory of 4908	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	100
PID 1660 wrote to memory of 4908	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	100
PID 1660 wrote to memory of 4908	1660	5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe	100
PID 3924 wrote to memory of 64	3924	krdqzmnh.exe	105
PID 3924 wrote to memory of 64	3924	krdqzmnh.exe	105
PID 3924 wrote to memory of 64	3924	krdqzmnh.exe	105
PID 3924 wrote to memory of 64	3924	krdqzmnh.exe	105
PID 3924 wrote to memory of 64	3924	krdqzmnh.exe	105

C:\Users\Admin\AppData\Local\Temp\5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1660
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gihecno\
  2⤵
  PID:3240
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\krdqzmnh.exe" C:\Windows\SysWOW64\gihecno\
  2⤵
  PID:2480
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gihecno binPath= "C:\Windows\SysWOW64\gihecno\krdqzmnh.exe /d\"C:\Users\Admin\AppData\Local\Temp\5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gihecno "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gihecno
  2⤵
  - Launches sc.exe
  PID:4372
- 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
  PID:4908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1660 -s 1224
  2⤵
  - Program crash
  PID:1728

C:\Windows\SysWOW64\gihecno\krdqzmnh.exe
C:\Windows\SysWOW64\gihecno\krdqzmnh.exe /d"C:\Users\Admin\AppData\Local\Temp\5ad636415ef21eb9962689d4c2c6876f_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3924
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:64
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3924 -s 528
  2⤵
  - Program crash
  PID:4128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1660 -ip 1660
1⤵
PID:3468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3924 -ip 3924
1⤵
PID:2688

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

krdqzmnh.exe

Path C:\Users\Admin\AppData\Local\Temp\krdqzmnh.exe
Size 11.0MB
SHA256 07ef84a926212646a37ab05f83d6922ba3aa373e3da2d5987b3411d7b7c766d6
MD5 fc6eabfe54c301153580300a38c5bfd5
SHA1 7370f7d9eac2f1f31528757cdf7084437eaa8338
SHA512 a285787eeeecb32349abe3d0b3055ca254eb0f4e6f8703d9c327e46581a419c986aed9bc6c31bd89addecf932046b8c2445e12abaf33cd314d33cd1ca18b066d
SSDEEP 196608:lXPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:l
MD5 SHA1 SHA512 SSDEEP

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memory/64-11-0x00000000006C0000-0x00000000006D5000-memory.dmp

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memory/64-13-0x00000000006C0000-0x00000000006D5000-memory.dmp

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memory/64-16-0x00000000006C0000-0x00000000006D5000-memory.dmp

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memory/1660-1-0x0000000000900000-0x0000000000A00000-memory.dmp

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memory/1660-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/1660-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/1660-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

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memory/1660-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/1660-8-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/3924-14-0x0000000000400000-0x0000000000871000-memory.dmp

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memory/3924-15-0x0000000000400000-0x0000000000871000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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