tofsee | 5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa

General

Target

5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe
Size

171KB
MD5

210e538a95d8fd1b5737c7116ec602de
SHA1

f10933e1bfabe35fb3b50ebb825726b467a0a829
SHA256

5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa
SHA512

79365f9b368fbff7b1d00821b1850e589987d70a1589949195fd3b084c9dea0658e83e6c50f2c8887386184f4c925f1de88746d47fe1f675aa6bd0e431867bbe

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

svchost.exe

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

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

riibljvj.exe

pid process

1436 riibljvj.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

908 netsh.exe

pid	process
1436	riibljvj.exe

pid	process
908	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\fqhixmtb\ImagePath = "C:\\Windows\\SysWOW64\\fqhixmtb\\riibljvj.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

584 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

riibljvj.exe

description pid process target process

PID 1436 set thread context of 584 1436 riibljvj.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

1248 sc.exe
1404 sc.exe
1148 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
584	svchost.exe

description	pid	process	target process
PID 1436 set thread context of 584	1436	riibljvj.exe	svchost.exe

pid	process
1248	sc.exe
1404	sc.exe
1148	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exeriibljvj.exe

description	pid	process	target process
PID 1856 wrote to memory of 1972	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	cmd.exe
PID 1856 wrote to memory of 1972	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	cmd.exe
PID 1856 wrote to memory of 1972	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	cmd.exe
PID 1856 wrote to memory of 1972	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	cmd.exe
PID 1856 wrote to memory of 1796	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	cmd.exe
PID 1856 wrote to memory of 1796	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	cmd.exe
PID 1856 wrote to memory of 1796	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	cmd.exe
PID 1856 wrote to memory of 1796	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	cmd.exe
PID 1856 wrote to memory of 1248	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	sc.exe
PID 1856 wrote to memory of 1248	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	sc.exe
PID 1856 wrote to memory of 1248	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	sc.exe
PID 1856 wrote to memory of 1248	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	sc.exe
PID 1856 wrote to memory of 1404	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	sc.exe
PID 1856 wrote to memory of 1404	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	sc.exe
PID 1856 wrote to memory of 1404	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	sc.exe
PID 1856 wrote to memory of 1404	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	sc.exe
PID 1856 wrote to memory of 1148	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	sc.exe
PID 1856 wrote to memory of 1148	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	sc.exe
PID 1856 wrote to memory of 1148	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	sc.exe
PID 1856 wrote to memory of 1148	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	sc.exe
PID 1856 wrote to memory of 908	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	netsh.exe
PID 1856 wrote to memory of 908	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	netsh.exe
PID 1856 wrote to memory of 908	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	netsh.exe
PID 1856 wrote to memory of 908	1856	5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe	netsh.exe
PID 1436 wrote to memory of 584	1436	riibljvj.exe	svchost.exe
PID 1436 wrote to memory of 584	1436	riibljvj.exe	svchost.exe
PID 1436 wrote to memory of 584	1436	riibljvj.exe	svchost.exe
PID 1436 wrote to memory of 584	1436	riibljvj.exe	svchost.exe
PID 1436 wrote to memory of 584	1436	riibljvj.exe	svchost.exe
PID 1436 wrote to memory of 584	1436	riibljvj.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe
"C:\Users\Admin\AppData\Local\Temp\5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1856

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fqhixmtb\
2⤵
PID:1972

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\riibljvj.exe" C:\Windows\SysWOW64\fqhixmtb\
2⤵
PID:1796

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create fqhixmtb binPath= "C:\Windows\SysWOW64\fqhixmtb\riibljvj.exe /d\"C:\Users\Admin\AppData\Local\Temp\5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1248

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description fqhixmtb "wifi internet conection"
2⤵
- Launches sc.exe
PID:1404

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start fqhixmtb
2⤵
- Launches sc.exe
PID:1148

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
PID:908

C:\Windows\SysWOW64\fqhixmtb\riibljvj.exe
C:\Windows\SysWOW64\fqhixmtb\riibljvj.exe /d"C:\Users\Admin\AppData\Local\Temp\5ff6edb9d95818ca99a6d559c287552009a4af4e943592d79a0f42efb44671aa.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1436

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:584

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1

T1050

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

New Service

1

T1050

Defense Evasion

Disabling Security Tools

1

T1089

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\riibljvj.exe
Filesize
11.4MB

MD5
b471152b32ded072aad1f7ead6aec25f

SHA1
262193586a9577855620f97990c8361d6cc770d2

SHA256
7fc8e0784f4231ac47a2fda69db7d3ba09c84dfdac4311d2eb2ea1e2e8784158

SHA512
52af33ded0ef9907401a916b5896511822419c2557daafed86195f24bc6cb9c525990be79a1079c3c7d688c28777f18db2a174dac4492508d01e09471e4a95a5

Download Submit
C:\Windows\SysWOW64\fqhixmtb\riibljvj.exe
Filesize
11.4MB

MD5
b471152b32ded072aad1f7ead6aec25f

SHA1
262193586a9577855620f97990c8361d6cc770d2

SHA256
7fc8e0784f4231ac47a2fda69db7d3ba09c84dfdac4311d2eb2ea1e2e8784158

SHA512
52af33ded0ef9907401a916b5896511822419c2557daafed86195f24bc6cb9c525990be79a1079c3c7d688c28777f18db2a174dac4492508d01e09471e4a95a5

Download Submit
memory/584-67-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/584-75-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/584-74-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/584-73-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/584-70-0x0000000000089A6B-mapping.dmp

Download
memory/584-69-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/908-64-0x0000000000000000-mapping.dmp

Download
memory/1148-61-0x0000000000000000-mapping.dmp

Download
memory/1248-59-0x0000000000000000-mapping.dmp

Download
memory/1404-60-0x0000000000000000-mapping.dmp

Download
memory/1436-66-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1796-57-0x0000000000000000-mapping.dmp

Download
memory/1856-54-0x00000000761D1000-0x00000000761D3000-memory.dmp

Filesize
8KB

Download
memory/1856-55-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1972-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads