tofsee | 09e707025066b12df30cef409b036a8e74e9ef66c9ea1398bee9bdce3b4d0d1b

General

Target

1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe
Size

12.9MB
MD5

1fa3e0cc0442dbb6f0fcfe20ee1aba66
SHA1

423fbcc2ee9b37cb6878ce0a57f4d008b6d06ce5
SHA256

09e707025066b12df30cef409b036a8e74e9ef66c9ea1398bee9bdce3b4d0d1b
SHA512

447bb43df9d5dab44aba597de97889c15350a517fcef456d378347f77623043b9b215f3e022e97630b776d887e5c03a09b0d444d1d7d5a45bdb2b4f488477a95

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:

dpqkfbcz.exe

pid process

2308 dpqkfbcz.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

1380 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

dpqkfbcz.exe

description pid process target process

PID 2308 set thread context of 1380 2308 dpqkfbcz.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
2308	dpqkfbcz.exe

pid	process
1380	svchost.exe

description	pid	process	target process
PID 2308 set thread context of 1380	2308	dpqkfbcz.exe	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

1fa3e0cc0442dbb6f0fcfe20ee1aba66.exedpqkfbcz.exe

description	pid	process	target process
PID 652 wrote to memory of 4032	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	cmd.exe
PID 652 wrote to memory of 4032	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	cmd.exe
PID 652 wrote to memory of 4032	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	cmd.exe
PID 652 wrote to memory of 3824	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	cmd.exe
PID 652 wrote to memory of 3824	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	cmd.exe
PID 652 wrote to memory of 3824	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	cmd.exe
PID 652 wrote to memory of 560	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	sc.exe
PID 652 wrote to memory of 560	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	sc.exe
PID 652 wrote to memory of 560	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	sc.exe
PID 652 wrote to memory of 192	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	sc.exe
PID 652 wrote to memory of 192	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	sc.exe
PID 652 wrote to memory of 192	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	sc.exe
PID 652 wrote to memory of 636	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	sc.exe
PID 652 wrote to memory of 636	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	sc.exe
PID 652 wrote to memory of 636	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	sc.exe
PID 2308 wrote to memory of 1380	2308	dpqkfbcz.exe	svchost.exe
PID 2308 wrote to memory of 1380	2308	dpqkfbcz.exe	svchost.exe
PID 2308 wrote to memory of 1380	2308	dpqkfbcz.exe	svchost.exe
PID 2308 wrote to memory of 1380	2308	dpqkfbcz.exe	svchost.exe
PID 2308 wrote to memory of 1380	2308	dpqkfbcz.exe	svchost.exe
PID 652 wrote to memory of 3948	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	netsh.exe
PID 652 wrote to memory of 3948	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	netsh.exe
PID 652 wrote to memory of 3948	652	1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe
"C:\Users\Admin\AppData\Local\Temp\1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:652

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iwhxkbqb\
2⤵
PID:4032

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dpqkfbcz.exe" C:\Windows\SysWOW64\iwhxkbqb\
2⤵
PID:3824

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create iwhxkbqb binPath= "C:\Windows\SysWOW64\iwhxkbqb\dpqkfbcz.exe /d\"C:\Users\Admin\AppData\Local\Temp\1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:560

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description iwhxkbqb "wifi internet conection"
2⤵
PID:192

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start iwhxkbqb
2⤵
PID:636

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:3948

C:\Windows\SysWOW64\iwhxkbqb\dpqkfbcz.exe
C:\Windows\SysWOW64\iwhxkbqb\dpqkfbcz.exe /d"C:\Users\Admin\AppData\Local\Temp\1fa3e0cc0442dbb6f0fcfe20ee1aba66.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2308

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Deletes itself
PID:1380

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\dpqkfbcz.exe
MD5
23bb6bbac9b78d92dea6141177a310b1

SHA1
0aa41e2e63680d164ecf5535eef847019895f5b7

SHA256
7f49800262b39066f174a97a8984c7b892812b6f1289956eec34215e7e908ce8

SHA512
0c57f1afe554231bc277174dbaf62967ea04b384937a989fba9ebf4181f2727bf91884dc45f958373037dfefd37f810f51844014193c28f5659e6f4f9bc555a1

Download Submit
C:\Windows\SysWOW64\iwhxkbqb\dpqkfbcz.exe
MD5
23bb6bbac9b78d92dea6141177a310b1

SHA1
0aa41e2e63680d164ecf5535eef847019895f5b7

SHA256
7f49800262b39066f174a97a8984c7b892812b6f1289956eec34215e7e908ce8

SHA512
0c57f1afe554231bc277174dbaf62967ea04b384937a989fba9ebf4181f2727bf91884dc45f958373037dfefd37f810f51844014193c28f5659e6f4f9bc555a1

Download Submit
memory/192-6-0x0000000000000000-mapping.dmp

Download
memory/560-5-0x0000000000000000-mapping.dmp

Download
memory/636-7-0x0000000000000000-mapping.dmp

Download
memory/1380-9-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download
memory/1380-10-0x0000000000DA9A6B-mapping.dmp

Download
memory/3824-3-0x0000000000000000-mapping.dmp

Download
memory/3948-12-0x0000000000000000-mapping.dmp

Download
memory/4032-2-0x0000000000000000-mapping.dmp

Download

Analysis

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