tofsee | c327b4ad3c94238bed34499f211255b097a59d5cc7ac6f80f434144ca2e16898

Analysis

max time kernel
144s
max time network
117s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
13-01-2025 19:07

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General

Target

2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe
Size

11.7MB
MD5

1129ae360d97b0e86ae5d7e2b0127e01
SHA1

a1e0c7c02e015f03d998707adecefccf48e9268c
SHA256

c327b4ad3c94238bed34499f211255b097a59d5cc7ac6f80f434144ca2e16898
SHA512

035cc69448fda1a436c8f1591610f2e596a67411a6f88897df585d037d57590a18e9f8f0146b15c182d1a24bace2692fa19ca4d3a7708c57dbcda2489117d253
SSDEEP

6144:wLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQQ:lTYe+D2jFu+iZoUFhAz

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation 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
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\iyjeosfe = "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
2780	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\iyjeosfe\ImagePath = "C:\\Windows\\SysWOW64\\iyjeosfe\\kfjbrcec.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2796	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
348	kfjbrcec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 348 set thread context of 2796	348	kfjbrcec.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2248	sc.exe
2740	sc.exe
468	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.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	kfjbrcec.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2556 wrote to memory of 2580	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	30
PID 2556 wrote to memory of 2580	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	30
PID 2556 wrote to memory of 2580	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	30
PID 2556 wrote to memory of 2580	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	30
PID 2556 wrote to memory of 2376	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	32
PID 2556 wrote to memory of 2376	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	32
PID 2556 wrote to memory of 2376	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	32
PID 2556 wrote to memory of 2376	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	32
PID 2556 wrote to memory of 468	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	34
PID 2556 wrote to memory of 468	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	34
PID 2556 wrote to memory of 468	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	34
PID 2556 wrote to memory of 468	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	34
PID 2556 wrote to memory of 2248	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	36
PID 2556 wrote to memory of 2248	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	36
PID 2556 wrote to memory of 2248	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	36
PID 2556 wrote to memory of 2248	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	36
PID 2556 wrote to memory of 2740	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	38
PID 2556 wrote to memory of 2740	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	38
PID 2556 wrote to memory of 2740	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	38
PID 2556 wrote to memory of 2740	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	38
PID 2556 wrote to memory of 2780	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	41
PID 2556 wrote to memory of 2780	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	41
PID 2556 wrote to memory of 2780	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	41
PID 2556 wrote to memory of 2780	2556	2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe	41
PID 348 wrote to memory of 2796	348	kfjbrcec.exe	43
PID 348 wrote to memory of 2796	348	kfjbrcec.exe	43
PID 348 wrote to memory of 2796	348	kfjbrcec.exe	43
PID 348 wrote to memory of 2796	348	kfjbrcec.exe	43
PID 348 wrote to memory of 2796	348	kfjbrcec.exe	43
PID 348 wrote to memory of 2796	348	kfjbrcec.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iyjeosfe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2580
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kfjbrcec.exe" C:\Windows\SysWOW64\iyjeosfe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create iyjeosfe binPath= "C:\Windows\SysWOW64\iyjeosfe\kfjbrcec.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description iyjeosfe "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2248
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start iyjeosfe
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- 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:2780

C:\Windows\SysWOW64\iyjeosfe\kfjbrcec.exe
C:\Windows\SysWOW64\iyjeosfe\kfjbrcec.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-13_1129ae360d97b0e86ae5d7e2b0127e01_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:348
- 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:2796

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\kfjbrcec.exe

Filesize
13.9MB

MD5
f5c01a6b5e49f9adc0eec20c36d58aba

SHA1
4dfcb67f425ee6fcc21e3427c609bdc00bfae347

SHA256
022e2b3b3fb5012cd0046da80b2a48eec285e38844aaf2357c1c2da5b2822939

SHA512
d36fd0048f4696a32fd63a3e5e16adf42199f19d7cb5fdbf58e1a25f0b664d73423e42eff1d57362456fb9b79a0412cc8e4f96f876a4e797187ae76e8d4e504f

Download Submit
memory/348-16-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2556-8-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2556-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2556-7-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2556-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2556-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2556-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2796-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2796-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2796-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2796-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2796-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads