tofsee | 7e9aa2336c370908afb719885d7cb83e3775c3a5c66712822dc984a70fdbccac

Analysis

max time kernel
148s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2024, 02:50

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General

Target
f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe
Size 14.0MB
Sample240415-db1emscg32
SHA256 7e9aa2336c370908afb719885d7cb83e3775c3a5c66712822dc984a70fdbccac
MD5 f020da955cab805a4f8c60f8c1a375a4
SHA1 905e9f614c2823c4b0b305590ee40dce6a158622
SHA512 e18aa565a4663d1ffd6c3255ddae1c46ec5464b965dc53f715218bcd9598303e92a74dd719d783aa5e39a2f5c4a5c33c89db30888fa0b722ae0edeefbbaae32f
SSDEEP 196608:ZRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRB:
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
3620	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\hptiothv\ImagePath = "C:\\Windows\\SysWOW64\\hptiothv\\mntcnjxf.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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
5104	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3236	mntcnjxf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3236 set thread context of 5104	3236	mntcnjxf.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
376	sc.exe
4816	sc.exe
3416	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
1852	5008	WerFault.exe	83
4912	3236	WerFault.exe	100

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5008 wrote to memory of 2420	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	90
PID 5008 wrote to memory of 2420	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	90
PID 5008 wrote to memory of 2420	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	90
PID 5008 wrote to memory of 4020	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	92
PID 5008 wrote to memory of 4020	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	92
PID 5008 wrote to memory of 4020	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	92
PID 5008 wrote to memory of 3416	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	94
PID 5008 wrote to memory of 3416	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	94
PID 5008 wrote to memory of 3416	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	94
PID 5008 wrote to memory of 376	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	96
PID 5008 wrote to memory of 376	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	96
PID 5008 wrote to memory of 376	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	96
PID 5008 wrote to memory of 4816	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	98
PID 5008 wrote to memory of 4816	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	98
PID 5008 wrote to memory of 4816	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	98
PID 5008 wrote to memory of 3620	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	101
PID 5008 wrote to memory of 3620	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	101
PID 5008 wrote to memory of 3620	5008	f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe	101
PID 3236 wrote to memory of 5104	3236	mntcnjxf.exe	105
PID 3236 wrote to memory of 5104	3236	mntcnjxf.exe	105
PID 3236 wrote to memory of 5104	3236	mntcnjxf.exe	105
PID 3236 wrote to memory of 5104	3236	mntcnjxf.exe	105
PID 3236 wrote to memory of 5104	3236	mntcnjxf.exe	105

C:\Users\Admin\AppData\Local\Temp\f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5008
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hptiothv\
  2⤵
  PID:2420
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mntcnjxf.exe" C:\Windows\SysWOW64\hptiothv\
  2⤵
  PID:4020
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hptiothv binPath= "C:\Windows\SysWOW64\hptiothv\mntcnjxf.exe /d\"C:\Users\Admin\AppData\Local\Temp\f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:3416
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hptiothv "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hptiothv
  2⤵
  - Launches sc.exe
  PID:4816
- 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:3620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5008 -s 1036
  2⤵
  - Program crash
  PID:1852

C:\Windows\SysWOW64\hptiothv\mntcnjxf.exe
C:\Windows\SysWOW64\hptiothv\mntcnjxf.exe /d"C:\Users\Admin\AppData\Local\Temp\f020da955cab805a4f8c60f8c1a375a4_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3236
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:5104
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3236 -s 532
  2⤵
  - Program crash
  PID:4912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 5008 -ip 5008
1⤵
PID:4016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 3236 -ip 3236
1⤵
PID:4420

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

mntcnjxf.exe

Path C:\Users\Admin\AppData\Local\Temp\mntcnjxf.exe
Size 13.9MB
SHA256 e3eb3fca58a57c4e99cb58833b3ecb89585c0b2279cd2e7e9491ceaccf9d9dfc
MD5 825dd4bf9aec02e658784b20582998d1
SHA1 d5b6f4ca97f546bd9a1aeb684ef064feeed473e3
SHA512 1bb185049d4c9e3a4740311b5496b47fa2cb5dbca1efa5c1cddfb9a5a8e6c9ba5d2ff38e6e9bd7ff459676d0c428c4adde5f101595743d1203935fdea5ecc293
SSDEEP 196608:/RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRP:
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3236-10-0x0000000000C00000-0x0000000000D00000-memory.dmp

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memory/3236-11-0x0000000000400000-0x00000000008EA000-memory.dmp

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memory/3236-17-0x0000000000400000-0x00000000008EA000-memory.dmp

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memory/5008-4-0x0000000000400000-0x00000000008EA000-memory.dmp

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memory/5008-2-0x0000000002620000-0x0000000002633000-memory.dmp

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memory/5008-7-0x0000000000400000-0x00000000008EA000-memory.dmp

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memory/5008-8-0x0000000002620000-0x0000000002633000-memory.dmp

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memory/5008-1-0x0000000000A60000-0x0000000000B60000-memory.dmp

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memory/5104-12-0x00000000006F0000-0x0000000000705000-memory.dmp

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memory/5104-16-0x00000000006F0000-0x0000000000705000-memory.dmp

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memory/5104-18-0x00000000006F0000-0x0000000000705000-memory.dmp

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memory/5104-19-0x00000000006F0000-0x0000000000705000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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