tofsee | a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993

General

Target

a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe
Size

98KB
MD5

514b7bcdfaee001949a7d283d30b4e4f
SHA1

efafadcadb7c5666bc6716b3e3b7228008f78e2e
SHA256

a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993
SHA512

700f7cdc8538f879ecae07218850750bcb0edcf2fddafedbf175119d4c2e0d85efc257f9dfba99a31b0d87cf0b6d2bc915f6931243572c91646df1b70409eb45

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\zezwrjcq = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

lnizqkrk.exe

pid process

272 lnizqkrk.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

676 netsh.exe

pid	process
272	lnizqkrk.exe

pid	process
676	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\zezwrjcq\ImagePath = "C:\\Windows\\SysWOW64\\zezwrjcq\\lnizqkrk.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1048 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

lnizqkrk.exe

description pid process target process

PID 272 set thread context of 1048 272 lnizqkrk.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

1076 sc.exe
968 sc.exe
1108 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
1048	svchost.exe

description	pid	process	target process
PID 272 set thread context of 1048	272	lnizqkrk.exe	svchost.exe

pid	process
1076	sc.exe
968	sc.exe
1108	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exelnizqkrk.exe

description	pid	process	target process
PID 2032 wrote to memory of 1644	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	cmd.exe
PID 2032 wrote to memory of 1644	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	cmd.exe
PID 2032 wrote to memory of 1644	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	cmd.exe
PID 2032 wrote to memory of 1644	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	cmd.exe
PID 2032 wrote to memory of 1452	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	cmd.exe
PID 2032 wrote to memory of 1452	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	cmd.exe
PID 2032 wrote to memory of 1452	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	cmd.exe
PID 2032 wrote to memory of 1452	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	cmd.exe
PID 2032 wrote to memory of 968	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 2032 wrote to memory of 968	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 2032 wrote to memory of 968	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 2032 wrote to memory of 968	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 2032 wrote to memory of 1108	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 2032 wrote to memory of 1108	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 2032 wrote to memory of 1108	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 2032 wrote to memory of 1108	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 2032 wrote to memory of 1076	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 2032 wrote to memory of 1076	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 2032 wrote to memory of 1076	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 2032 wrote to memory of 1076	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 2032 wrote to memory of 676	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	netsh.exe
PID 2032 wrote to memory of 676	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	netsh.exe
PID 2032 wrote to memory of 676	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	netsh.exe
PID 2032 wrote to memory of 676	2032	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	netsh.exe
PID 272 wrote to memory of 1048	272	lnizqkrk.exe	svchost.exe
PID 272 wrote to memory of 1048	272	lnizqkrk.exe	svchost.exe
PID 272 wrote to memory of 1048	272	lnizqkrk.exe	svchost.exe
PID 272 wrote to memory of 1048	272	lnizqkrk.exe	svchost.exe
PID 272 wrote to memory of 1048	272	lnizqkrk.exe	svchost.exe
PID 272 wrote to memory of 1048	272	lnizqkrk.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe
"C:\Users\Admin\AppData\Local\Temp\a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2032

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zezwrjcq\
2⤵
PID:1644

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lnizqkrk.exe" C:\Windows\SysWOW64\zezwrjcq\
2⤵
PID:1452

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create zezwrjcq binPath= "C:\Windows\SysWOW64\zezwrjcq\lnizqkrk.exe /d\"C:\Users\Admin\AppData\Local\Temp\a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:968

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description zezwrjcq "wifi internet conection"
2⤵
- Launches sc.exe
PID:1108

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start zezwrjcq
2⤵
- Launches sc.exe
PID:1076

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:676

C:\Windows\SysWOW64\zezwrjcq\lnizqkrk.exe
C:\Windows\SysWOW64\zezwrjcq\lnizqkrk.exe /d"C:\Users\Admin\AppData\Local\Temp\a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:272

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:1048

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\lnizqkrk.exe
Filesize
10.3MB

MD5
305953b5d0a11e30ae86782579156ba2

SHA1
d59218e1c386e6579e7df976c50758239ea9bf23

SHA256
bf2fee8732bf1d0c120d7a431f3724896c2e79ba965b4f7dd16d812494482824

SHA512
a3eda88419a8656a9126cf58c2610128c64c157826c463831e70d7f25a70e201ebbe982aecf0ee864c995897db1545c146bd55a527c6fd15fccb468f24775516

Download Submit
C:\Windows\SysWOW64\zezwrjcq\lnizqkrk.exe
Filesize
10.3MB

MD5
305953b5d0a11e30ae86782579156ba2

SHA1
d59218e1c386e6579e7df976c50758239ea9bf23

SHA256
bf2fee8732bf1d0c120d7a431f3724896c2e79ba965b4f7dd16d812494482824

SHA512
a3eda88419a8656a9126cf58c2610128c64c157826c463831e70d7f25a70e201ebbe982aecf0ee864c995897db1545c146bd55a527c6fd15fccb468f24775516

Download Submit
memory/272-64-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/676-62-0x0000000000000000-mapping.dmp

Download
memory/968-59-0x0000000000000000-mapping.dmp

Download
memory/1048-68-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1048-66-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1048-69-0x0000000000089A6B-mapping.dmp

Download
memory/1048-74-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1048-75-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1076-61-0x0000000000000000-mapping.dmp

Download
memory/1108-60-0x0000000000000000-mapping.dmp

Download
memory/1452-57-0x0000000000000000-mapping.dmp

Download
memory/1644-56-0x0000000000000000-mapping.dmp

Download
memory/2032-54-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2032-55-0x0000000076071000-0x0000000076073000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads