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
Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

mholkhde.exe

pid process

1748 mholkhde.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

3364 netsh.exe

pid	process
1748	mholkhde.exe

pid	process
3364	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\rgurkdvi\ImagePath = "C:\\Windows\\SysWOW64\\rgurkdvi\\mholkhde.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Control Panel\International\Geo\Nation	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

mholkhde.exe

description pid process target process

PID 1748 set thread context of 3048 1748 mholkhde.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

216 sc.exe
3232 sc.exe
688 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 1748 set thread context of 3048	1748	mholkhde.exe	svchost.exe

pid	process
216	sc.exe
3232	sc.exe
688	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exemholkhde.exe

description	pid	process	target process
PID 3472 wrote to memory of 2844	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	cmd.exe
PID 3472 wrote to memory of 2844	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	cmd.exe
PID 3472 wrote to memory of 2844	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	cmd.exe
PID 3472 wrote to memory of 3112	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	cmd.exe
PID 3472 wrote to memory of 3112	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	cmd.exe
PID 3472 wrote to memory of 3112	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	cmd.exe
PID 3472 wrote to memory of 688	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 3472 wrote to memory of 688	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 3472 wrote to memory of 688	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 3472 wrote to memory of 216	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 3472 wrote to memory of 216	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 3472 wrote to memory of 216	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 3472 wrote to memory of 3232	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 3472 wrote to memory of 3232	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 3472 wrote to memory of 3232	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	sc.exe
PID 3472 wrote to memory of 3364	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	netsh.exe
PID 3472 wrote to memory of 3364	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	netsh.exe
PID 3472 wrote to memory of 3364	3472	a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe	netsh.exe
PID 1748 wrote to memory of 3048	1748	mholkhde.exe	svchost.exe
PID 1748 wrote to memory of 3048	1748	mholkhde.exe	svchost.exe
PID 1748 wrote to memory of 3048	1748	mholkhde.exe	svchost.exe
PID 1748 wrote to memory of 3048	1748	mholkhde.exe	svchost.exe
PID 1748 wrote to memory of 3048	1748	mholkhde.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe
"C:\Users\Admin\AppData\Local\Temp\a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3472

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rgurkdvi\
2⤵
PID:2844

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mholkhde.exe" C:\Windows\SysWOW64\rgurkdvi\
2⤵
PID:3112

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create rgurkdvi binPath= "C:\Windows\SysWOW64\rgurkdvi\mholkhde.exe /d\"C:\Users\Admin\AppData\Local\Temp\a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:688

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description rgurkdvi "wifi internet conection"
2⤵
- Launches sc.exe
PID:216

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start rgurkdvi
2⤵
- Launches sc.exe
PID:3232

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:3364

C:\Windows\SysWOW64\rgurkdvi\mholkhde.exe
C:\Windows\SysWOW64\rgurkdvi\mholkhde.exe /d"C:\Users\Admin\AppData\Local\Temp\a2088c326ff419b13f3b65fa4358ac0dae9989f28fc03122f603ec4e1d04a993.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1748

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:3048

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

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\mholkhde.exe
Filesize
13.9MB

MD5
ab7aeea344af5f9db9a2b73a04edec27

SHA1
447e0e25c237c36ecb08369c1e266ea2e625ac16

SHA256
34afea54574bec0ecf8c674b49de76909f1853633fe1201955388dc3cd11361e

SHA512
83322eeead96b30ec3e24a4e47be2bc761944cbdb782be8485bdde9dff429e2283b8492da519dd9c819e7160ce1d3446984eb65cae9eaeec1622ecd49d31694d

Download Submit
C:\Windows\SysWOW64\rgurkdvi\mholkhde.exe
Filesize
13.9MB

MD5
ab7aeea344af5f9db9a2b73a04edec27

SHA1
447e0e25c237c36ecb08369c1e266ea2e625ac16

SHA256
34afea54574bec0ecf8c674b49de76909f1853633fe1201955388dc3cd11361e

SHA512
83322eeead96b30ec3e24a4e47be2bc761944cbdb782be8485bdde9dff429e2283b8492da519dd9c819e7160ce1d3446984eb65cae9eaeec1622ecd49d31694d

Download Submit
memory/216-135-0x0000000000000000-mapping.dmp

Download
memory/688-134-0x0000000000000000-mapping.dmp

Download
memory/1748-139-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/2844-131-0x0000000000000000-mapping.dmp

Download
memory/3048-140-0x0000000000000000-mapping.dmp

Download
memory/3048-141-0x00000000004C0000-0x00000000004D5000-memory.dmp

Filesize
84KB

Download
memory/3048-143-0x00000000004C0000-0x00000000004D5000-memory.dmp

Filesize
84KB

Download
memory/3048-144-0x00000000004C0000-0x00000000004D5000-memory.dmp

Filesize
84KB

Download
memory/3048-145-0x00000000004C0000-0x00000000004D5000-memory.dmp

Filesize
84KB

Download
memory/3112-132-0x0000000000000000-mapping.dmp

Download
memory/3232-136-0x0000000000000000-mapping.dmp

Download
memory/3364-137-0x0000000000000000-mapping.dmp

Download
memory/3472-130-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads