tofsee | bfe6a26a9ce2912a847cb03cba96057caf7e87a074ed408e82de72edc9f93d5d

Analysis

max time kernel
149s
max time network
152s
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, 14:54

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General

Target
f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe
Size 12.1MB
Sample240415-r99b4abc81
SHA256 bfe6a26a9ce2912a847cb03cba96057caf7e87a074ed408e82de72edc9f93d5d
MD5 f152c13bba794da66f2609639299f6c4
SHA1 785b6a13f29846d9793681de51835b61c6630214
SHA512 d6fa6df224979e2a2bcdc38d324498484d3a6be2fe3f63d3245b2cb63414479aabfce4ce93916d226339329c4fa6cc356b1e11df03eccd3ca1fac4414c16924f
SSDEEP 393216:v00000000000000000000000000000000000000000000000000000000000000E:
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7
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
764	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\qacblkne\ImagePath = "C:\\Windows\\SysWOW64\\qacblkne\\tyidxjgi.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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2608	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1744	tyidxjgi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1744 set thread context of 2608	1744	tyidxjgi.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
2672	sc.exe
2516	sc.exe
2208	sc.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2684 wrote to memory of 2852	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	88
PID 2684 wrote to memory of 2852	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	88
PID 2684 wrote to memory of 2852	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	88
PID 2684 wrote to memory of 4300	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	90
PID 2684 wrote to memory of 4300	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	90
PID 2684 wrote to memory of 4300	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	90
PID 2684 wrote to memory of 2672	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	93
PID 2684 wrote to memory of 2672	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	93
PID 2684 wrote to memory of 2672	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	93
PID 2684 wrote to memory of 2516	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	96
PID 2684 wrote to memory of 2516	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	96
PID 2684 wrote to memory of 2516	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	96
PID 2684 wrote to memory of 2208	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	98
PID 2684 wrote to memory of 2208	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	98
PID 2684 wrote to memory of 2208	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	98
PID 2684 wrote to memory of 764	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	101
PID 2684 wrote to memory of 764	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	101
PID 2684 wrote to memory of 764	2684	f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe	101
PID 1744 wrote to memory of 2608	1744	tyidxjgi.exe	103
PID 1744 wrote to memory of 2608	1744	tyidxjgi.exe	103
PID 1744 wrote to memory of 2608	1744	tyidxjgi.exe	103
PID 1744 wrote to memory of 2608	1744	tyidxjgi.exe	103
PID 1744 wrote to memory of 2608	1744	tyidxjgi.exe	103

C:\Users\Admin\AppData\Local\Temp\f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qacblkne\
  2⤵
  PID:2852
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tyidxjgi.exe" C:\Windows\SysWOW64\qacblkne\
  2⤵
  PID:4300
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qacblkne binPath= "C:\Windows\SysWOW64\qacblkne\tyidxjgi.exe /d\"C:\Users\Admin\AppData\Local\Temp\f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qacblkne "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qacblkne
  2⤵
  - Launches sc.exe
  PID:2208
- 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:764

C:\Windows\SysWOW64\qacblkne\tyidxjgi.exe
C:\Windows\SysWOW64\qacblkne\tyidxjgi.exe /d"C:\Users\Admin\AppData\Local\Temp\f152c13bba794da66f2609639299f6c4_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1744
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:2608

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

tyidxjgi.exe

Path C:\Users\Admin\AppData\Local\Temp\tyidxjgi.exe
Size 11.1MB
SHA256 3efc23228296689926973571c5389ecef326572fca949dbfa5bbe60c4533ef85
MD5 3714ab7e33ed8f9d52ceb40801d7be44
SHA1 572c857e2d71770d5a7fa637aa8fb4dc746cfb8e
SHA512 9c49ea7878cedd28ced89de963b38223d6dd0271cb2290c70ffc02ddfa3063c514f8e0b54732294ba82bb89d6e3e5199c7288725a76e6219d12822d3993fc15f
SSDEEP 196608:D00000000000000000000000000000000000000000000000000000000000000w:D000000000000000000000000000000w
MD5 SHA1 SHA512 SSDEEP

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memory/1744-10-0x0000000002C20000-0x0000000002D20000-memory.dmp

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memory/1744-13-0x0000000000400000-0x0000000002BA8000-memory.dmp

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memory/1744-16-0x0000000000400000-0x0000000002BA8000-memory.dmp

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memory/2608-11-0x0000000000C10000-0x0000000000C25000-memory.dmp

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memory/2608-15-0x0000000000C10000-0x0000000000C25000-memory.dmp

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memory/2608-17-0x0000000000C10000-0x0000000000C25000-memory.dmp

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memory/2608-18-0x0000000000C10000-0x0000000000C25000-memory.dmp

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memory/2608-19-0x0000000000C10000-0x0000000000C25000-memory.dmp

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memory/2684-4-0x0000000000400000-0x0000000002BA8000-memory.dmp

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memory/2684-2-0x00000000047C0000-0x00000000047D3000-memory.dmp

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memory/2684-7-0x0000000000400000-0x0000000002BA8000-memory.dmp

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memory/2684-9-0x00000000047C0000-0x00000000047D3000-memory.dmp

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memory/2684-1-0x0000000002BC0000-0x0000000002CC0000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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