tofsee | 34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c

General

Target

34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe
Size

104KB
MD5

b8aefed6abece4f59edf9567a0cafed5
SHA1

df318db2b549a7a6e6bf51fbf3a55627bc8a8f1c
SHA256

34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c
SHA512

c7671d6482045f57db20d9c4e5113843b32af79d0a7f04f916caa44d83a8f0a7733801d7cf202e52418432a79cbd324947a8583ae39866b5619889f4ddb69bdf

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\qsvtglck = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

pkronkgh.exe

pid process

1640 pkronkgh.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1708 netsh.exe

pid	process
1640	pkronkgh.exe

pid	process
1708	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\qsvtglck\ImagePath = "C:\\Windows\\SysWOW64\\qsvtglck\\pkronkgh.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

112 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

pkronkgh.exe

description pid process target process

PID 1640 set thread context of 112 1640 pkronkgh.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

1524 sc.exe
1244 sc.exe
764 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
112	svchost.exe

description	pid	process	target process
PID 1640 set thread context of 112	1640	pkronkgh.exe	svchost.exe

pid	process
1524	sc.exe
1244	sc.exe
764	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exepkronkgh.exe

description	pid	process	target process
PID 2032 wrote to memory of 1652	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	cmd.exe
PID 2032 wrote to memory of 1652	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	cmd.exe
PID 2032 wrote to memory of 1652	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	cmd.exe
PID 2032 wrote to memory of 1652	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	cmd.exe
PID 2032 wrote to memory of 1488	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	cmd.exe
PID 2032 wrote to memory of 1488	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	cmd.exe
PID 2032 wrote to memory of 1488	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	cmd.exe
PID 2032 wrote to memory of 1488	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	cmd.exe
PID 2032 wrote to memory of 1524	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	sc.exe
PID 2032 wrote to memory of 1524	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	sc.exe
PID 2032 wrote to memory of 1524	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	sc.exe
PID 2032 wrote to memory of 1524	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	sc.exe
PID 2032 wrote to memory of 1244	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	sc.exe
PID 2032 wrote to memory of 1244	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	sc.exe
PID 2032 wrote to memory of 1244	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	sc.exe
PID 2032 wrote to memory of 1244	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	sc.exe
PID 2032 wrote to memory of 764	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	sc.exe
PID 2032 wrote to memory of 764	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	sc.exe
PID 2032 wrote to memory of 764	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	sc.exe
PID 2032 wrote to memory of 764	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	sc.exe
PID 2032 wrote to memory of 1708	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	netsh.exe
PID 2032 wrote to memory of 1708	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	netsh.exe
PID 2032 wrote to memory of 1708	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	netsh.exe
PID 2032 wrote to memory of 1708	2032	34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe	netsh.exe
PID 1640 wrote to memory of 112	1640	pkronkgh.exe	svchost.exe
PID 1640 wrote to memory of 112	1640	pkronkgh.exe	svchost.exe
PID 1640 wrote to memory of 112	1640	pkronkgh.exe	svchost.exe
PID 1640 wrote to memory of 112	1640	pkronkgh.exe	svchost.exe
PID 1640 wrote to memory of 112	1640	pkronkgh.exe	svchost.exe
PID 1640 wrote to memory of 112	1640	pkronkgh.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe
"C:\Users\Admin\AppData\Local\Temp\34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2032

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qsvtglck\
2⤵
PID:1652

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pkronkgh.exe" C:\Windows\SysWOW64\qsvtglck\
2⤵
PID:1488

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create qsvtglck binPath= "C:\Windows\SysWOW64\qsvtglck\pkronkgh.exe /d\"C:\Users\Admin\AppData\Local\Temp\34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1524

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description qsvtglck "wifi internet conection"
2⤵
- Launches sc.exe
PID:1244

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start qsvtglck
2⤵
- Launches sc.exe
PID:764

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:1708

C:\Windows\SysWOW64\qsvtglck\pkronkgh.exe
C:\Windows\SysWOW64\qsvtglck\pkronkgh.exe /d"C:\Users\Admin\AppData\Local\Temp\34c414bf27ed2603e855e7ad3578a9ac86b03faa1a7db3278cedead5ffa1458c.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1640

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:112

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\pkronkgh.exe
Filesize
14.1MB

MD5
c0b85263fc414c69b02828b4e6fb7f13

SHA1
0f6ddbe937c80cc38dd829ab0e0dedb24b83c219

SHA256
df56ea0fdba301ba81079c3b818a595d1d76caa66e3859076b7438df66404659

SHA512
9c10e74c3ed43b4362b671b8ab4a68a48f7e62c0b8a69063abf3bdd8ad92a4c3e244826863416477549d2f594a73dce53a77bd38a2fcb0cea1756ef3198bd795

Download Submit
C:\Windows\SysWOW64\qsvtglck\pkronkgh.exe
Filesize
14.1MB

MD5
c0b85263fc414c69b02828b4e6fb7f13

SHA1
0f6ddbe937c80cc38dd829ab0e0dedb24b83c219

SHA256
df56ea0fdba301ba81079c3b818a595d1d76caa66e3859076b7438df66404659

SHA512
9c10e74c3ed43b4362b671b8ab4a68a48f7e62c0b8a69063abf3bdd8ad92a4c3e244826863416477549d2f594a73dce53a77bd38a2fcb0cea1756ef3198bd795

Download Submit
memory/112-69-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/112-74-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/112-67-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/112-75-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/112-70-0x00000000000C9A6B-mapping.dmp

Download
memory/112-73-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/764-61-0x0000000000000000-mapping.dmp

Download
memory/1244-60-0x0000000000000000-mapping.dmp

Download
memory/1488-57-0x0000000000000000-mapping.dmp

Download
memory/1524-59-0x0000000000000000-mapping.dmp

Download
memory/1640-65-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/1652-56-0x0000000000000000-mapping.dmp

Download
memory/1708-62-0x0000000000000000-mapping.dmp

Download
memory/2032-55-0x00000000759F1000-0x00000000759F3000-memory.dmp

Filesize
8KB

Download
memory/2032-54-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads