tofsee | 96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 23:35

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General

Target

JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe
Size

292KB
MD5

8a1e0ccf9945d654f0bceffc3e387c6e
SHA1

7cd2eeac9b54711d9a23f9a0abc30a9407837111
SHA256

96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259
SHA512

3e88a1c37cf391652b582578c75e702556231afb44051406bf09171b9e382ce4d580bb41ac180da977f81fee440ac22151da5d68040eb8ee45b7d476f6f69894
SSDEEP

6144:niMhhMfj568D7SXuZet0yobAPtXX85CK0:/hhyj5z3SXuZet0yobAp85

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation 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
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\gkydeeaf = "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\gkydeeaf\ImagePath = "C:\\Windows\\SysWOW64\\gkydeeaf\\yrmycrc.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2452	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2596	yrmycrc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2596 set thread context of 2452	2596	yrmycrc.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2732	sc.exe
3044	sc.exe
2688	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yrmycrc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2660 wrote to memory of 2760	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	30
PID 2660 wrote to memory of 2760	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	30
PID 2660 wrote to memory of 2760	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	30
PID 2660 wrote to memory of 2760	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	30
PID 2660 wrote to memory of 2708	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	32
PID 2660 wrote to memory of 2708	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	32
PID 2660 wrote to memory of 2708	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	32
PID 2660 wrote to memory of 2708	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	32
PID 2660 wrote to memory of 2732	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	34
PID 2660 wrote to memory of 2732	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	34
PID 2660 wrote to memory of 2732	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	34
PID 2660 wrote to memory of 2732	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	34
PID 2660 wrote to memory of 3044	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	36
PID 2660 wrote to memory of 3044	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	36
PID 2660 wrote to memory of 3044	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	36
PID 2660 wrote to memory of 3044	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	36
PID 2660 wrote to memory of 2688	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	38
PID 2660 wrote to memory of 2688	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	38
PID 2660 wrote to memory of 2688	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	38
PID 2660 wrote to memory of 2688	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	38
PID 2660 wrote to memory of 2552	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	40
PID 2660 wrote to memory of 2552	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	40
PID 2660 wrote to memory of 2552	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	40
PID 2660 wrote to memory of 2552	2660	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	40
PID 2596 wrote to memory of 2452	2596	yrmycrc.exe	43
PID 2596 wrote to memory of 2452	2596	yrmycrc.exe	43
PID 2596 wrote to memory of 2452	2596	yrmycrc.exe	43
PID 2596 wrote to memory of 2452	2596	yrmycrc.exe	43
PID 2596 wrote to memory of 2452	2596	yrmycrc.exe	43
PID 2596 wrote to memory of 2452	2596	yrmycrc.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2660
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gkydeeaf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yrmycrc.exe" C:\Windows\SysWOW64\gkydeeaf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gkydeeaf binPath= "C:\Windows\SysWOW64\gkydeeaf\yrmycrc.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2732
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gkydeeaf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gkydeeaf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2688
- 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\gkydeeaf\yrmycrc.exe
C:\Windows\SysWOW64\gkydeeaf\yrmycrc.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2596
- 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:2452

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\yrmycrc.exe

Filesize
14.2MB

MD5
ecf269c5bfca05a5a552c24b51783d63

SHA1
061885c9781f7ed4f9e5f0434a7b2b3592395a73

SHA256
8be1fb644bc56f87573e9764438f661eb18b87aeabce5e8bd86859b55764650a

SHA512
3e84040977cdbed7281d7f78bedd2bb727b6e5f27ce71ecf18cb0c88f2d8e9359862138b912c69829f7786d7472c209a57f3fa119475a96219af3ee69ed09a04

Download Submit
memory/2452-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2452-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2596-14-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download
memory/2660-2-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download
memory/2660-3-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download
memory/2660-5-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads