tofsee | 34a778f45563129b9fd9ba7baaa297056f2cfa2f39804af405e2f25c989721c8

General

Target

a9fa51ad1139e264aab2587952efa791.exe
Size

10.5MB
MD5

a9fa51ad1139e264aab2587952efa791
SHA1

d2f386beedc6ca2d0107360194757e287d59ade0
SHA256

34a778f45563129b9fd9ba7baaa297056f2cfa2f39804af405e2f25c989721c8
SHA512

394e02fcaeb785327a0fca1f5ca2bd852974010a38be79fc1b128405327ec6660ee17d07dd1b6dd9f0056b4746bd0ff3160e5418eea04b42bfff93de18ee501f

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

idkhgdza.exe

pid process

1092 idkhgdza.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112
Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

428 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

idkhgdza.exe

description pid process target process

PID 1092 set thread context of 428 1092 idkhgdza.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
1092	idkhgdza.exe

pid	process
428	svchost.exe

description	pid	process	target process
PID 1092 set thread context of 428	1092	idkhgdza.exe	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

a9fa51ad1139e264aab2587952efa791.exeidkhgdza.exe

description	pid	process	target process
PID 1084 wrote to memory of 1996	1084	a9fa51ad1139e264aab2587952efa791.exe	cmd.exe
PID 1084 wrote to memory of 1996	1084	a9fa51ad1139e264aab2587952efa791.exe	cmd.exe
PID 1084 wrote to memory of 1996	1084	a9fa51ad1139e264aab2587952efa791.exe	cmd.exe
PID 1084 wrote to memory of 1996	1084	a9fa51ad1139e264aab2587952efa791.exe	cmd.exe
PID 1084 wrote to memory of 1552	1084	a9fa51ad1139e264aab2587952efa791.exe	cmd.exe
PID 1084 wrote to memory of 1552	1084	a9fa51ad1139e264aab2587952efa791.exe	cmd.exe
PID 1084 wrote to memory of 1552	1084	a9fa51ad1139e264aab2587952efa791.exe	cmd.exe
PID 1084 wrote to memory of 1552	1084	a9fa51ad1139e264aab2587952efa791.exe	cmd.exe
PID 1084 wrote to memory of 1672	1084	a9fa51ad1139e264aab2587952efa791.exe	sc.exe
PID 1084 wrote to memory of 1672	1084	a9fa51ad1139e264aab2587952efa791.exe	sc.exe
PID 1084 wrote to memory of 1672	1084	a9fa51ad1139e264aab2587952efa791.exe	sc.exe
PID 1084 wrote to memory of 1672	1084	a9fa51ad1139e264aab2587952efa791.exe	sc.exe
PID 1084 wrote to memory of 668	1084	a9fa51ad1139e264aab2587952efa791.exe	sc.exe
PID 1084 wrote to memory of 668	1084	a9fa51ad1139e264aab2587952efa791.exe	sc.exe
PID 1084 wrote to memory of 668	1084	a9fa51ad1139e264aab2587952efa791.exe	sc.exe
PID 1084 wrote to memory of 668	1084	a9fa51ad1139e264aab2587952efa791.exe	sc.exe
PID 1084 wrote to memory of 1324	1084	a9fa51ad1139e264aab2587952efa791.exe	sc.exe
PID 1084 wrote to memory of 1324	1084	a9fa51ad1139e264aab2587952efa791.exe	sc.exe
PID 1084 wrote to memory of 1324	1084	a9fa51ad1139e264aab2587952efa791.exe	sc.exe
PID 1084 wrote to memory of 1324	1084	a9fa51ad1139e264aab2587952efa791.exe	sc.exe
PID 1084 wrote to memory of 780	1084	a9fa51ad1139e264aab2587952efa791.exe	netsh.exe
PID 1084 wrote to memory of 780	1084	a9fa51ad1139e264aab2587952efa791.exe	netsh.exe
PID 1084 wrote to memory of 780	1084	a9fa51ad1139e264aab2587952efa791.exe	netsh.exe
PID 1084 wrote to memory of 780	1084	a9fa51ad1139e264aab2587952efa791.exe	netsh.exe
PID 1092 wrote to memory of 428	1092	idkhgdza.exe	svchost.exe
PID 1092 wrote to memory of 428	1092	idkhgdza.exe	svchost.exe
PID 1092 wrote to memory of 428	1092	idkhgdza.exe	svchost.exe
PID 1092 wrote to memory of 428	1092	idkhgdza.exe	svchost.exe
PID 1092 wrote to memory of 428	1092	idkhgdza.exe	svchost.exe
PID 1092 wrote to memory of 428	1092	idkhgdza.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\a9fa51ad1139e264aab2587952efa791.exe
"C:\Users\Admin\AppData\Local\Temp\a9fa51ad1139e264aab2587952efa791.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1084

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jralbwti\
2⤵
PID:1996

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\idkhgdza.exe" C:\Windows\SysWOW64\jralbwti\
2⤵
PID:1552

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create jralbwti binPath= "C:\Windows\SysWOW64\jralbwti\idkhgdza.exe /d\"C:\Users\Admin\AppData\Local\Temp\a9fa51ad1139e264aab2587952efa791.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:1672

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description jralbwti "wifi internet conection"
2⤵
PID:668

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start jralbwti
2⤵
PID:1324

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⤵
PID:780

C:\Windows\SysWOW64\jralbwti\idkhgdza.exe
C:\Windows\SysWOW64\jralbwti\idkhgdza.exe /d"C:\Users\Admin\AppData\Local\Temp\a9fa51ad1139e264aab2587952efa791.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1092

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:428

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\idkhgdza.exe
MD5
c2c767e90d6f50ae2aa90b83f6bb6577

SHA1
7249badb5ac7d800753632bfba30f3a43e104509

SHA256
74f988e5d903ef0204f893acd4be9169882d7051ad8afdb4735ffd9911791583

SHA512
3accf8f4fb314ef94029f637c3c82c4cde6d1ccd740c1caeeb19053728f0d7530d884d0b8730f87d7c86e1dc0cfee5f4e9bfb10ac51be01e5600a224ac96d730

Download Submit
C:\Windows\SysWOW64\jralbwti\idkhgdza.exe
MD5
c2c767e90d6f50ae2aa90b83f6bb6577

SHA1
7249badb5ac7d800753632bfba30f3a43e104509

SHA256
74f988e5d903ef0204f893acd4be9169882d7051ad8afdb4735ffd9911791583

SHA512
3accf8f4fb314ef94029f637c3c82c4cde6d1ccd740c1caeeb19053728f0d7530d884d0b8730f87d7c86e1dc0cfee5f4e9bfb10ac51be01e5600a224ac96d730

Download Submit
memory/428-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/428-11-0x0000000000089A6B-mapping.dmp

Download
memory/428-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/668-6-0x0000000000000000-mapping.dmp

Download
memory/780-8-0x0000000000000000-mapping.dmp

Download
memory/1324-7-0x0000000000000000-mapping.dmp

Download
memory/1552-3-0x0000000000000000-mapping.dmp

Download
memory/1672-5-0x0000000000000000-mapping.dmp

Download
memory/1996-2-0x0000000000000000-mapping.dmp

Download

Analysis

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