tofsee | 308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230

General

Target

308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe
Size

120KB
MD5

b84615094beeac27936f9d8838bba53c
SHA1

03c41583b675686e05c855c2e891387c88df1933
SHA256

308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230
SHA512

06e49d5b95e5c601b8813fe21ae3bb0563e5231171b6655eb34a97403fb51d9e0e171d66907958c112cd6b43a61f57e101b6c3a691e8b843a1566c6fd61a621e

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\tftukllh = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

yavmdxex.exe

pid process

820 yavmdxex.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

656 netsh.exe

pid	process
820	yavmdxex.exe

pid	process
656	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\tftukllh\ImagePath = "C:\\Windows\\SysWOW64\\tftukllh\\yavmdxex.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

680 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

yavmdxex.exe

description pid process target process

PID 820 set thread context of 680 820 yavmdxex.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

2044 sc.exe
2016 sc.exe
1692 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
680	svchost.exe

description	pid	process	target process
PID 820 set thread context of 680	820	yavmdxex.exe	svchost.exe

pid	process
2044	sc.exe
2016	sc.exe
1692	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exeyavmdxex.exe

description	pid	process	target process
PID 1964 wrote to memory of 1904	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	cmd.exe
PID 1964 wrote to memory of 1904	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	cmd.exe
PID 1964 wrote to memory of 1904	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	cmd.exe
PID 1964 wrote to memory of 1904	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	cmd.exe
PID 1964 wrote to memory of 1296	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	cmd.exe
PID 1964 wrote to memory of 1296	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	cmd.exe
PID 1964 wrote to memory of 1296	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	cmd.exe
PID 1964 wrote to memory of 1296	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	cmd.exe
PID 1964 wrote to memory of 2044	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	sc.exe
PID 1964 wrote to memory of 2044	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	sc.exe
PID 1964 wrote to memory of 2044	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	sc.exe
PID 1964 wrote to memory of 2044	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	sc.exe
PID 1964 wrote to memory of 2016	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	sc.exe
PID 1964 wrote to memory of 2016	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	sc.exe
PID 1964 wrote to memory of 2016	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	sc.exe
PID 1964 wrote to memory of 2016	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	sc.exe
PID 1964 wrote to memory of 1692	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	sc.exe
PID 1964 wrote to memory of 1692	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	sc.exe
PID 1964 wrote to memory of 1692	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	sc.exe
PID 1964 wrote to memory of 1692	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	sc.exe
PID 1964 wrote to memory of 656	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	netsh.exe
PID 1964 wrote to memory of 656	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	netsh.exe
PID 1964 wrote to memory of 656	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	netsh.exe
PID 1964 wrote to memory of 656	1964	308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe	netsh.exe
PID 820 wrote to memory of 680	820	yavmdxex.exe	svchost.exe
PID 820 wrote to memory of 680	820	yavmdxex.exe	svchost.exe
PID 820 wrote to memory of 680	820	yavmdxex.exe	svchost.exe
PID 820 wrote to memory of 680	820	yavmdxex.exe	svchost.exe
PID 820 wrote to memory of 680	820	yavmdxex.exe	svchost.exe
PID 820 wrote to memory of 680	820	yavmdxex.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe
"C:\Users\Admin\AppData\Local\Temp\308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1964

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tftukllh\
2⤵
PID:1904

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yavmdxex.exe" C:\Windows\SysWOW64\tftukllh\
2⤵
PID:1296

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create tftukllh binPath= "C:\Windows\SysWOW64\tftukllh\yavmdxex.exe /d\"C:\Users\Admin\AppData\Local\Temp\308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2044

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description tftukllh "wifi internet conection"
2⤵
- Launches sc.exe
PID:2016

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start tftukllh
2⤵
- Launches sc.exe
PID:1692

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:656

C:\Windows\SysWOW64\tftukllh\yavmdxex.exe
C:\Windows\SysWOW64\tftukllh\yavmdxex.exe /d"C:\Users\Admin\AppData\Local\Temp\308e929a6159837bfd00254a2a0eb4ca5617b23851044f39835a0f73fda18230.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:820

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:680

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\yavmdxex.exe
Filesize
13.9MB

MD5
ec5170e77b48dcc0ba39a7136e7e9d89

SHA1
62672eba0438f35d4abe68b4f1dbe3d82005ad54

SHA256
7c09b0fc07757ff0e0401582633cc537ec6af9cd9406d13b4b3b2c693eb18bec

SHA512
d1f191c85105787c2fb6968ea3760201badb57a73418e6fef20c8e4f41f40d77ae077b8bd506e8d5c0d158bcbdec049293c87359d06ec137d6c5067a77e8ca77

Download Submit
C:\Windows\SysWOW64\tftukllh\yavmdxex.exe
Filesize
13.9MB

MD5
ec5170e77b48dcc0ba39a7136e7e9d89

SHA1
62672eba0438f35d4abe68b4f1dbe3d82005ad54

SHA256
7c09b0fc07757ff0e0401582633cc537ec6af9cd9406d13b4b3b2c693eb18bec

SHA512
d1f191c85105787c2fb6968ea3760201badb57a73418e6fef20c8e4f41f40d77ae077b8bd506e8d5c0d158bcbdec049293c87359d06ec137d6c5067a77e8ca77

Download Submit
memory/656-62-0x0000000000000000-mapping.dmp

Download
memory/680-70-0x00000000000C9A6B-mapping.dmp

Download
memory/680-75-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/680-74-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/680-73-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/680-67-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/680-69-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/820-65-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1296-57-0x0000000000000000-mapping.dmp

Download
memory/1692-61-0x0000000000000000-mapping.dmp

Download
memory/1904-56-0x0000000000000000-mapping.dmp

Download
memory/1964-55-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1964-54-0x0000000075401000-0x0000000075403000-memory.dmp

Filesize
8KB

Download
memory/2016-60-0x0000000000000000-mapping.dmp

Download
memory/2044-59-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads