tofsee | bb55c73dc38027d6366b3403767f6036bd8671771183040d8db36e8da2eb6ec1

Analysis

max time kernel
149s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
07-12-2024 18:49

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe
Size

10.0MB
MD5

3a2ed34c3dc624d64a485f8634dde112
SHA1

7b8b4aece7c01011127c489c5cd97130ba6f483b
SHA256

bb55c73dc38027d6366b3403767f6036bd8671771183040d8db36e8da2eb6ec1
SHA512

d56e7f26a625e4a2791dee32feb5e3ffdd8db041196a177287d4e09e220b78a9306013f0f23f9d9f41d6d9803f39211d35d5eae17ad3b9631597ad823996282e
SSDEEP

6144:oXxZveEydmxZnXNMRaTuMUifWLKxNMMMMMMMbgb:oXzvvygxZnXxr+mxNMMMMMMMbg

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\dnesuczt = "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
2556	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\dnesuczt\ImagePath = "C:\\Windows\\SysWOW64\\dnesuczt\\ryllozrm.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
620	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2820	ryllozrm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2820 set thread context of 620	2820	ryllozrm.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2724	sc.exe
2756	sc.exe
2824	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ryllozrm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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 2252 wrote to memory of 2768	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	30
PID 2252 wrote to memory of 2768	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	30
PID 2252 wrote to memory of 2768	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	30
PID 2252 wrote to memory of 2768	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	30
PID 2252 wrote to memory of 2672	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	32
PID 2252 wrote to memory of 2672	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	32
PID 2252 wrote to memory of 2672	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	32
PID 2252 wrote to memory of 2672	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	32
PID 2252 wrote to memory of 2724	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	34
PID 2252 wrote to memory of 2724	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	34
PID 2252 wrote to memory of 2724	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	34
PID 2252 wrote to memory of 2724	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	34
PID 2252 wrote to memory of 2756	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	36
PID 2252 wrote to memory of 2756	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	36
PID 2252 wrote to memory of 2756	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	36
PID 2252 wrote to memory of 2756	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	36
PID 2252 wrote to memory of 2824	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	38
PID 2252 wrote to memory of 2824	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	38
PID 2252 wrote to memory of 2824	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	38
PID 2252 wrote to memory of 2824	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	38
PID 2252 wrote to memory of 2556	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	41
PID 2252 wrote to memory of 2556	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	41
PID 2252 wrote to memory of 2556	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	41
PID 2252 wrote to memory of 2556	2252	2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe	41
PID 2820 wrote to memory of 620	2820	ryllozrm.exe	43
PID 2820 wrote to memory of 620	2820	ryllozrm.exe	43
PID 2820 wrote to memory of 620	2820	ryllozrm.exe	43
PID 2820 wrote to memory of 620	2820	ryllozrm.exe	43
PID 2820 wrote to memory of 620	2820	ryllozrm.exe	43
PID 2820 wrote to memory of 620	2820	ryllozrm.exe	43

C:\Users\Admin\AppData\Local\Temp\2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dnesuczt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2768
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ryllozrm.exe" C:\Windows\SysWOW64\dnesuczt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dnesuczt binPath= "C:\Windows\SysWOW64\dnesuczt\ryllozrm.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2724
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dnesuczt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2756
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dnesuczt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2824
- 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:2556

C:\Windows\SysWOW64\dnesuczt\ryllozrm.exe
C:\Windows\SysWOW64\dnesuczt\ryllozrm.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-07_3a2ed34c3dc624d64a485f8634dde112_karagany_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2820
- 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:620

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
10.8MB

MD5
3ee0cfa3f138a9b836f860d890aba20f

SHA1
6cc9a6ff6430f5016ccbce32b9dd00c36c8c3996

SHA256
6e74e0a52f96338ca7b67db042c5c48fd0d58ccf2f4b63c6099a8c5ad5a09867

SHA512
daa67cb99b104343b5c805426a3c580649c35f7856a8c0c9465e3b3e61428d1b6e72fcdba1b3472b599c7a75014c59dea3c5e838fd04f8c64d8a74ea0d759d11

Download Submit
memory/620-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/620-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/620-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/620-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/620-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2252-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2252-1-0x0000000000500000-0x0000000000600000-memory.dmp

Filesize
1024KB

Download
memory/2252-7-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2252-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2252-8-0x00000000002A0000-0x00000000002B3000-memory.dmp

Filesize
76KB

Download
memory/2252-2-0x00000000002A0000-0x00000000002B3000-memory.dmp

Filesize
76KB

Download
memory/2820-16-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads