tofsee | a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398

Analysis

max time kernel
146s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30/12/2024, 06:36

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General

Target

JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe
Size

167KB
MD5

8febb6205b517d7e07c7158dc6c90674
SHA1

26a9a0f0b9b362e97872a88eb66ff455792d7a21
SHA256

a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398
SHA512

110904a7aca8fb540f0b2b5d3af670df874d5123ef965818e497868b3d958ec30d30786c86d0d9353e500b894ae48801819b7f3a7fab8175ff5ff11fb583ac06
SSDEEP

1536:MBOUmWGCZfdtPLMyjDoI3AuVytQxku7y68Nud2cEq1k/2lnUGV25PICecrDBdJgz:lcxjDCmmMMcjUFGV25gYJVS9H6dYs

Score

10^/10

tofsee discovery 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
Tofsee family
tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\erczxoj = "0"	svchost.exe

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
2552	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\erczxoj\ImagePath = "C:\\Windows\\SysWOW64\\erczxoj\\uxqywygq.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2196	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2600	uxqywygq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2600 set thread context of 2196	2600	uxqywygq.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2684	sc.exe
2560	sc.exe
1528	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 opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uxqywygq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1812 wrote to memory of 2700	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	30
PID 1812 wrote to memory of 2700	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	30
PID 1812 wrote to memory of 2700	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	30
PID 1812 wrote to memory of 2700	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	30
PID 1812 wrote to memory of 2788	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	32
PID 1812 wrote to memory of 2788	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	32
PID 1812 wrote to memory of 2788	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	32
PID 1812 wrote to memory of 2788	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	32
PID 1812 wrote to memory of 2684	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	34
PID 1812 wrote to memory of 2684	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	34
PID 1812 wrote to memory of 2684	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	34
PID 1812 wrote to memory of 2684	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	34
PID 1812 wrote to memory of 2560	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	36
PID 1812 wrote to memory of 2560	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	36
PID 1812 wrote to memory of 2560	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	36
PID 1812 wrote to memory of 2560	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	36
PID 1812 wrote to memory of 1528	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	38
PID 1812 wrote to memory of 1528	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	38
PID 1812 wrote to memory of 1528	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	38
PID 1812 wrote to memory of 1528	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	38
PID 1812 wrote to memory of 2552	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	41
PID 1812 wrote to memory of 2552	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	41
PID 1812 wrote to memory of 2552	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	41
PID 1812 wrote to memory of 2552	1812	JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe	41
PID 2600 wrote to memory of 2196	2600	uxqywygq.exe	43
PID 2600 wrote to memory of 2196	2600	uxqywygq.exe	43
PID 2600 wrote to memory of 2196	2600	uxqywygq.exe	43
PID 2600 wrote to memory of 2196	2600	uxqywygq.exe	43
PID 2600 wrote to memory of 2196	2600	uxqywygq.exe	43
PID 2600 wrote to memory of 2196	2600	uxqywygq.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\erczxoj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2700
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uxqywygq.exe" C:\Windows\SysWOW64\erczxoj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2788
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create erczxoj binPath= "C:\Windows\SysWOW64\erczxoj\uxqywygq.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description erczxoj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2560
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start erczxoj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1528
- 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
  - System Location Discovery: System Language Discovery
  PID:2552

C:\Windows\SysWOW64\erczxoj\uxqywygq.exe
C:\Windows\SysWOW64\erczxoj\uxqywygq.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a3bb0d7755666457b022955aa09ee635265af13206520a4b3bbf447cdc61a398.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2600
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2196

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

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\uxqywygq.exe

Filesize
13.0MB

MD5
7b425d97881ada1d1e709f5c512fa503

SHA1
7e65cb635b59b67925f53600d823a981172bf717

SHA256
087e8714bee23856762a5eb72e64abc3da1580c4fb29ed500da8fa4dafa74e03

SHA512
fbad54f93c1de4c3ef7f9421c3ea1722c02da95d577c2b6a53d9e82ac87347cb2d50f0650312cb0f3992d1da867d95d9c9cca6bc444018f3d764fe7e33d37e64

Download Submit
memory/1812-1-0x0000000000570000-0x0000000000670000-memory.dmp

Filesize
1024KB

Download
memory/1812-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1812-4-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1812-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1812-9-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2196-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2196-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2196-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2196-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2196-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2600-17-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads