tofsee | 96635117bcd9bda84bffb6df899f7676737884dd0760c6c53d0676e9327c7b29

Analysis

max time kernel
147s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
18-01-2025 03:06

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General

Target

2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe
Size

14.8MB
MD5

8241b285d6878193cb7fefa0363ae0d2
SHA1

902d787772780cd99385afc89960eb9bf21c5ebc
SHA256

96635117bcd9bda84bffb6df899f7676737884dd0760c6c53d0676e9327c7b29
SHA512

db16c3c23eefe1e8cfddbb32089063f3fc1ee869207d716197ea02efd75917fa0f174fb0a786a2e190731e567d790c42c091098bdcc70dc4dd792d9b06772079
SSDEEP

6144:04XxZnMXxZX06XE1+wr1Zf/VmUL0PMMMMMMMb6:JXzMBZX0F+wrVRiMMMMMMMb

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\uvobbrpl = "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
2620	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\uvobbrpl\ImagePath = "C:\\Windows\\SysWOW64\\uvobbrpl\\zyokrns.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1600	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2576	zyokrns.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2576 set thread context of 1600	2576	zyokrns.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2108	sc.exe
2440	sc.exe
2544	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	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	zyokrns.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.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 2652 wrote to memory of 2832	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	30
PID 2652 wrote to memory of 2832	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	30
PID 2652 wrote to memory of 2832	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	30
PID 2652 wrote to memory of 2832	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	30
PID 2652 wrote to memory of 2740	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	32
PID 2652 wrote to memory of 2740	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	32
PID 2652 wrote to memory of 2740	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	32
PID 2652 wrote to memory of 2740	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	32
PID 2652 wrote to memory of 2108	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	34
PID 2652 wrote to memory of 2108	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	34
PID 2652 wrote to memory of 2108	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	34
PID 2652 wrote to memory of 2108	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	34
PID 2652 wrote to memory of 2440	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	36
PID 2652 wrote to memory of 2440	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	36
PID 2652 wrote to memory of 2440	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	36
PID 2652 wrote to memory of 2440	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	36
PID 2652 wrote to memory of 2544	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	38
PID 2652 wrote to memory of 2544	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	38
PID 2652 wrote to memory of 2544	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	38
PID 2652 wrote to memory of 2544	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	38
PID 2652 wrote to memory of 2620	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	41
PID 2652 wrote to memory of 2620	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	41
PID 2652 wrote to memory of 2620	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	41
PID 2652 wrote to memory of 2620	2652	2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe	41
PID 2576 wrote to memory of 1600	2576	zyokrns.exe	43
PID 2576 wrote to memory of 1600	2576	zyokrns.exe	43
PID 2576 wrote to memory of 1600	2576	zyokrns.exe	43
PID 2576 wrote to memory of 1600	2576	zyokrns.exe	43
PID 2576 wrote to memory of 1600	2576	zyokrns.exe	43
PID 2576 wrote to memory of 1600	2576	zyokrns.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2652
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uvobbrpl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2832
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zyokrns.exe" C:\Windows\SysWOW64\uvobbrpl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uvobbrpl binPath= "C:\Windows\SysWOW64\uvobbrpl\zyokrns.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2108
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uvobbrpl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2440
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uvobbrpl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2544
- 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:2620

C:\Windows\SysWOW64\uvobbrpl\zyokrns.exe
C:\Windows\SysWOW64\uvobbrpl\zyokrns.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-18_8241b285d6878193cb7fefa0363ae0d2_karagany_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2576
- 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:1600

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\zyokrns.exe

Filesize
13.3MB

MD5
bf0846fe0ccddb24a737bb6a5b83bdc4

SHA1
1bbcfbc6ef118a9ee5e94b0179daa73a2918c438

SHA256
74730853690c23137201d32e0a463b02400166ac9dd696cb6f142253d0217e11

SHA512
694398d27f8a5ba35eb72d39b21f8e6fcc73037ff32fcaca301f420951c8450fae4d8086353f97e855ce8fa153fc1ce0e2eb4942f3f5664b509e4de94752b35a

Download Submit
memory/1600-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1600-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1600-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1600-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1600-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2576-16-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2652-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2652-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/2652-7-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2652-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2652-8-0x0000000000240000-0x0000000000253000-memory.dmp

Filesize
76KB

Download
memory/2652-2-0x0000000000240000-0x0000000000253000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads