tofsee | 683fa1172ed26a953994f43177ceff28ee665a14736e73fc6f91f9fe330545a0

Analysis

max time kernel
147s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17/04/2024, 01:33

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General

Target
f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe
Size 12.9MB
Sample240417-bysxzaaa47
SHA256 683fa1172ed26a953994f43177ceff28ee665a14736e73fc6f91f9fe330545a0
MD5 f4c26a587ceedc4e1f881db4635d2e46
SHA1 222207a71d9e9e3eb534b4fdbd644e848f1c24e0
SHA512 722be7f412946c0b4a29b611afea11f0d5ca8b4d3263904299a2102a7a58dd1cb5a115f56a298820ade78b89c229e372189648db33de1cd2c13a8b09cc2a2463
SSDEEP 196608:vV8YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY/:
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

43.231.4.6
lazystax.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
1048	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\wtxktimt\ImagePath = "C:\\Windows\\SysWOW64\\wtxktimt\\xhcxoohn.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-1-5-21-1826666146-2574340311-1877551059-1000\Control Panel\International\Geo\Nation	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2320	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2708	xhcxoohn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2708 set thread context of 2320	2708	xhcxoohn.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
3528	sc.exe
4908	sc.exe
3044	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
1444	3220	WerFault.exe	83
3980	2708	WerFault.exe	102

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3220 wrote to memory of 4328	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	92
PID 3220 wrote to memory of 4328	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	92
PID 3220 wrote to memory of 4328	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	92
PID 3220 wrote to memory of 1208	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	94
PID 3220 wrote to memory of 1208	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	94
PID 3220 wrote to memory of 1208	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	94
PID 3220 wrote to memory of 3044	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	96
PID 3220 wrote to memory of 3044	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	96
PID 3220 wrote to memory of 3044	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	96
PID 3220 wrote to memory of 3528	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	98
PID 3220 wrote to memory of 3528	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	98
PID 3220 wrote to memory of 3528	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	98
PID 3220 wrote to memory of 4908	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	100
PID 3220 wrote to memory of 4908	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	100
PID 3220 wrote to memory of 4908	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	100
PID 3220 wrote to memory of 1048	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	103
PID 3220 wrote to memory of 1048	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	103
PID 3220 wrote to memory of 1048	3220	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	103
PID 2708 wrote to memory of 2320	2708	xhcxoohn.exe	107
PID 2708 wrote to memory of 2320	2708	xhcxoohn.exe	107
PID 2708 wrote to memory of 2320	2708	xhcxoohn.exe	107
PID 2708 wrote to memory of 2320	2708	xhcxoohn.exe	107
PID 2708 wrote to memory of 2320	2708	xhcxoohn.exe	107

C:\Users\Admin\AppData\Local\Temp\f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3220
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wtxktimt\
  2⤵
  PID:4328
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xhcxoohn.exe" C:\Windows\SysWOW64\wtxktimt\
  2⤵
  PID:1208
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wtxktimt binPath= "C:\Windows\SysWOW64\wtxktimt\xhcxoohn.exe /d\"C:\Users\Admin\AppData\Local\Temp\f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:3044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wtxktimt "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:3528
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wtxktimt
  2⤵
  - Launches sc.exe
  PID:4908
- 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:1048
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3220 -s 1224
  2⤵
  - Program crash
  PID:1444

C:\Windows\SysWOW64\wtxktimt\xhcxoohn.exe
C:\Windows\SysWOW64\wtxktimt\xhcxoohn.exe /d"C:\Users\Admin\AppData\Local\Temp\f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:2320
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2708 -s 520
  2⤵
  - Program crash
  PID:3980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3220 -ip 3220
1⤵
PID:4728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2708 -ip 2708
1⤵
PID:3840

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

xhcxoohn.exe

Path C:\Users\Admin\AppData\Local\Temp\xhcxoohn.exe
Size 11.2MB
SHA256 5d2b094f54e6b8429da8a49801875bb7ebf8d9dcd903c00b8f093115462f39e9
MD5 f3aebf052bf1c10555f6095b849d2d8a
SHA1 8aa5d1ed81ee89beca5c5b9bcfb3d94ff690632e
SHA512 abda6250753ab3a5288ae2f59c34e928a215b7bf387d30d4fb3cd21bcb9367f3e7d1364109a37324377e4116294b2d3dbf527502988458ceb478339cb4e35fe7
SSDEEP 196608:LV8YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYn:
MD5 SHA1 SHA512 SSDEEP

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memory/2320-16-0x0000000000A70000-0x0000000000A85000-memory.dmp

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memory/2320-11-0x0000000000A70000-0x0000000000A85000-memory.dmp

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memory/2320-18-0x0000000000A70000-0x0000000000A85000-memory.dmp

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memory/2320-19-0x0000000000A70000-0x0000000000A85000-memory.dmp

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memory/2708-10-0x0000000000BF0000-0x0000000000CF0000-memory.dmp

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memory/2708-12-0x0000000000400000-0x00000000008EA000-memory.dmp

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memory/2708-17-0x0000000000400000-0x00000000008EA000-memory.dmp

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memory/3220-4-0x0000000000400000-0x00000000008EA000-memory.dmp

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memory/3220-2-0x0000000002630000-0x0000000002643000-memory.dmp

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memory/3220-7-0x0000000000400000-0x00000000008EA000-memory.dmp

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memory/3220-8-0x0000000002630000-0x0000000002643000-memory.dmp

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memory/3220-1-0x0000000000A00000-0x0000000000B00000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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