tofsee | 3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06

General

Target

3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe
Size

113KB
MD5

bb99840487a3b6cd641612b2d02cd14a
SHA1

6231dd81359dbc961b572ed5191756c0d8f910f9
SHA256

3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06
SHA512

ab420f39ef21cf0eebf395fe5506ef87ab02adab8f15366c9deecb17e5266ee88ade649e8cabc19d9538da579a2fec69983ae7e160fb48c35d21e95890112ce2

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\bvieabmz = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

jvwqlhif.exe

pid process

2036 jvwqlhif.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1652 netsh.exe

pid	process
2036	jvwqlhif.exe

pid	process
1652	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\bvieabmz\ImagePath = "C:\\Windows\\SysWOW64\\bvieabmz\\jvwqlhif.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1208 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

jvwqlhif.exe

description pid process target process

PID 2036 set thread context of 1208 2036 jvwqlhif.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

588 sc.exe
1096 sc.exe
1720 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
1208	svchost.exe

description	pid	process	target process
PID 2036 set thread context of 1208	2036	jvwqlhif.exe	svchost.exe

pid	process
588	sc.exe
1096	sc.exe
1720	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exejvwqlhif.exe

description	pid	process	target process
PID 1512 wrote to memory of 1980	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	cmd.exe
PID 1512 wrote to memory of 1980	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	cmd.exe
PID 1512 wrote to memory of 1980	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	cmd.exe
PID 1512 wrote to memory of 1980	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	cmd.exe
PID 1512 wrote to memory of 956	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	cmd.exe
PID 1512 wrote to memory of 956	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	cmd.exe
PID 1512 wrote to memory of 956	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	cmd.exe
PID 1512 wrote to memory of 956	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	cmd.exe
PID 1512 wrote to memory of 1096	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	sc.exe
PID 1512 wrote to memory of 1096	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	sc.exe
PID 1512 wrote to memory of 1096	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	sc.exe
PID 1512 wrote to memory of 1096	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	sc.exe
PID 1512 wrote to memory of 1720	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	sc.exe
PID 1512 wrote to memory of 1720	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	sc.exe
PID 1512 wrote to memory of 1720	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	sc.exe
PID 1512 wrote to memory of 1720	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	sc.exe
PID 1512 wrote to memory of 588	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	sc.exe
PID 1512 wrote to memory of 588	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	sc.exe
PID 1512 wrote to memory of 588	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	sc.exe
PID 1512 wrote to memory of 588	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	sc.exe
PID 2036 wrote to memory of 1208	2036	jvwqlhif.exe	svchost.exe
PID 2036 wrote to memory of 1208	2036	jvwqlhif.exe	svchost.exe
PID 2036 wrote to memory of 1208	2036	jvwqlhif.exe	svchost.exe
PID 2036 wrote to memory of 1208	2036	jvwqlhif.exe	svchost.exe
PID 2036 wrote to memory of 1208	2036	jvwqlhif.exe	svchost.exe
PID 2036 wrote to memory of 1208	2036	jvwqlhif.exe	svchost.exe
PID 1512 wrote to memory of 1652	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	netsh.exe
PID 1512 wrote to memory of 1652	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	netsh.exe
PID 1512 wrote to memory of 1652	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	netsh.exe
PID 1512 wrote to memory of 1652	1512	3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe
"C:\Users\Admin\AppData\Local\Temp\3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1512

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bvieabmz\
2⤵
PID:1980

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jvwqlhif.exe" C:\Windows\SysWOW64\bvieabmz\
2⤵
PID:956

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create bvieabmz binPath= "C:\Windows\SysWOW64\bvieabmz\jvwqlhif.exe /d\"C:\Users\Admin\AppData\Local\Temp\3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1096

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description bvieabmz "wifi internet conection"
2⤵
- Launches sc.exe
PID:1720

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start bvieabmz
2⤵
- Launches sc.exe
PID:588

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:1652

C:\Windows\SysWOW64\bvieabmz\jvwqlhif.exe
C:\Windows\SysWOW64\bvieabmz\jvwqlhif.exe /d"C:\Users\Admin\AppData\Local\Temp\3d40e81224ca9620c592189da91429622a1493384561ab839bfb9c0ad3869e06.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2036

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:1208

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\jvwqlhif.exe
Filesize
10.7MB

MD5
e706594c92d70009b48318ccdfcae8b8

SHA1
4dd5f7f3c0d0a5a71586f874567d67a838521ccf

SHA256
021e6fd6778706e3be21e9ab247724bdfa6d7c6aed86c28f701140f7eeb40981

SHA512
0b9f02f9fbb046444f40c3fb041b3d96df4e0212852e1e8b73468b14a074e03b2d9a72c227d2a019c30fb9ee6d40546e147a0c8d1cdd3522e4533343ffa4f638

Download Submit
C:\Windows\SysWOW64\bvieabmz\jvwqlhif.exe
Filesize
10.7MB

MD5
e706594c92d70009b48318ccdfcae8b8

SHA1
4dd5f7f3c0d0a5a71586f874567d67a838521ccf

SHA256
021e6fd6778706e3be21e9ab247724bdfa6d7c6aed86c28f701140f7eeb40981

SHA512
0b9f02f9fbb046444f40c3fb041b3d96df4e0212852e1e8b73468b14a074e03b2d9a72c227d2a019c30fb9ee6d40546e147a0c8d1cdd3522e4533343ffa4f638

Download Submit
memory/588-62-0x0000000000000000-mapping.dmp

Download
memory/956-58-0x0000000000000000-mapping.dmp

Download
memory/1096-60-0x0000000000000000-mapping.dmp

Download
memory/1208-67-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1208-69-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1208-79-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1208-78-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1208-70-0x0000000000089A6B-mapping.dmp

Download
memory/1512-55-0x0000000076421000-0x0000000076423000-memory.dmp

Filesize
8KB

Download
memory/1512-57-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1512-54-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1512-76-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1652-75-0x0000000000000000-mapping.dmp

Download
memory/1720-61-0x0000000000000000-mapping.dmp

Download
memory/1980-56-0x0000000000000000-mapping.dmp

Download
memory/2036-66-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2036-64-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2036-71-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads