tofsee | 8fef051011edd55ad9fc409b8c219c0163ad76e51ccf7de04af425e3c65bcf26

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 04:05

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General

Target
f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe
Size 14.2MB
Sample240418-engnqsae23
SHA256 8fef051011edd55ad9fc409b8c219c0163ad76e51ccf7de04af425e3c65bcf26
MD5 f738ea71fba2f31d93643ceea356012b
SHA1 c2e376f784dc822841847b899564ec54ed76731c
SHA512 abd78b9573b6a8dbe7e02fd4ee984eb1a8c4c0c5b8db3997f766e44c52621ab2a54608a0a75754eaa969237704828aa157f7da1eaa2c2cc7ce1c59e8d9edc9b3
SSDEEP 196608:wOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOz:
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru
lakeflex.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4780	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\fzwctkqw\ImagePath = "C:\\Windows\\SysWOW64\\fzwctkqw\\wlqrltwp.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-1-5-21-4092317236-2027488869-1227795436-1000\Control Panel\International\Geo\Nation	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2500	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4380	wlqrltwp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4380 set thread context of 2500	4380	wlqrltwp.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
3500	sc.exe
1840	sc.exe
540	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2316	1484	WerFault.exe	84
1156	4380	WerFault.exe	101

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1484 wrote to memory of 2572	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	91
PID 1484 wrote to memory of 2572	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	91
PID 1484 wrote to memory of 2572	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	91
PID 1484 wrote to memory of 3684	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	93
PID 1484 wrote to memory of 3684	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	93
PID 1484 wrote to memory of 3684	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	93
PID 1484 wrote to memory of 3500	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	95
PID 1484 wrote to memory of 3500	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	95
PID 1484 wrote to memory of 3500	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	95
PID 1484 wrote to memory of 1840	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	97
PID 1484 wrote to memory of 1840	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	97
PID 1484 wrote to memory of 1840	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	97
PID 1484 wrote to memory of 540	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	99
PID 1484 wrote to memory of 540	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	99
PID 1484 wrote to memory of 540	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	99
PID 1484 wrote to memory of 4780	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	102
PID 1484 wrote to memory of 4780	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	102
PID 1484 wrote to memory of 4780	1484	f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe	102
PID 4380 wrote to memory of 2500	4380	wlqrltwp.exe	106
PID 4380 wrote to memory of 2500	4380	wlqrltwp.exe	106
PID 4380 wrote to memory of 2500	4380	wlqrltwp.exe	106
PID 4380 wrote to memory of 2500	4380	wlqrltwp.exe	106
PID 4380 wrote to memory of 2500	4380	wlqrltwp.exe	106

C:\Users\Admin\AppData\Local\Temp\f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1484
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fzwctkqw\
  2⤵
  PID:2572
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wlqrltwp.exe" C:\Windows\SysWOW64\fzwctkqw\
  2⤵
  PID:3684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fzwctkqw binPath= "C:\Windows\SysWOW64\fzwctkqw\wlqrltwp.exe /d\"C:\Users\Admin\AppData\Local\Temp\f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:3500
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fzwctkqw "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:1840
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fzwctkqw
  2⤵
  - Launches sc.exe
  PID:540
- 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
  PID:4780
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1484 -s 684
  2⤵
  - Program crash
  PID:2316

C:\Windows\SysWOW64\fzwctkqw\wlqrltwp.exe
C:\Windows\SysWOW64\fzwctkqw\wlqrltwp.exe /d"C:\Users\Admin\AppData\Local\Temp\f738ea71fba2f31d93643ceea356012b_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4380
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:2500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4380 -s 536
  2⤵
  - Program crash
  PID:1156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1484 -ip 1484
1⤵
PID:3004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4380 -ip 4380
1⤵
PID:2980

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

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

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

wlqrltwp.exe

Path C:\Users\Admin\AppData\Local\Temp\wlqrltwp.exe
Size 13.9MB
SHA256 cb89c8300652155b4253baef2b321a50ea8e825c548afb8444714652f1072c4e
MD5 0ca6a77696dfc3a2954947327a431608
SHA1 581a850dccb8b8d4407e3e299ea39de79647f07c
SHA512 bbc5224f0b1700563f251e411c72187a62960c7b229ee92f53e9f2d6866c559927a41c37d3763d48efee3ae398bbfc693bd644d5cd86c0eaa1548fb2c10e12ca
SSDEEP 196608:/OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOn:
MD5 SHA1 SHA512 SSDEEP

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memory/1484-2-0x0000000004C60000-0x0000000004C73000-memory.dmp

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memory/1484-4-0x0000000000400000-0x0000000002F11000-memory.dmp

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memory/1484-8-0x0000000000400000-0x0000000002F11000-memory.dmp

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memory/1484-9-0x0000000004C60000-0x0000000004C73000-memory.dmp

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memory/1484-1-0x00000000030C0000-0x00000000031C0000-memory.dmp

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memory/2500-19-0x0000000000E00000-0x0000000000E15000-memory.dmp

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memory/2500-12-0x0000000000E00000-0x0000000000E15000-memory.dmp

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memory/2500-15-0x0000000000E00000-0x0000000000E15000-memory.dmp

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memory/2500-20-0x0000000000E00000-0x0000000000E15000-memory.dmp

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memory/2500-17-0x0000000000E00000-0x0000000000E15000-memory.dmp

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memory/4380-11-0x0000000002FD0000-0x00000000030D0000-memory.dmp

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memory/4380-18-0x0000000000400000-0x0000000002F11000-memory.dmp

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memory/4380-16-0x0000000000400000-0x0000000002F11000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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