tofsee | b6768d16dbabafc1d9d07cdd065c875522cce0b6ee493187ba984e3e87b0aece

Analysis

max time kernel
150s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 01:05

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General

Target

b6202f30b837ad0025da86ecf9f5f1c9.exe
Size

12.6MB
MD5

b6202f30b837ad0025da86ecf9f5f1c9
SHA1

ac922759c8dde66341dd92f557c828b894aa0cfb
SHA256

b6768d16dbabafc1d9d07cdd065c875522cce0b6ee493187ba984e3e87b0aece
SHA512

ddf185d38b0ad7b7c8a69c27830c388ef3d20a3430cea4aecdeeae857b5d9209be4fda62d06b91b2018cd1d9f52f521fc95c5f9989ba4c54bd6f21bc4ebac527
SSDEEP

12288:ZRXQK44fy6111111111111111111111111111111111111111111111111111111:ZRx2

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

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

Windows Service
T1543.003

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
868	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\iferdxve\ImagePath = "C:\\Windows\\SysWOW64\\iferdxve\\qmeebqpd.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	b6202f30b837ad0025da86ecf9f5f1c9.exe

Deletes itself 1 IoCs

pid	Process
1612	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4872	qmeebqpd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4872 set thread context of 1612	4872	qmeebqpd.exe	152

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
572	sc.exe
3620	sc.exe
1236	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 22 IoCs

pid	pid_target	Process	procid_target
1620	4932	WerFault.exe	87
3608	4932	WerFault.exe	87
2784	4932	WerFault.exe	87
4984	4932	WerFault.exe	87
1712	4932	WerFault.exe	87
4500	4932	WerFault.exe	87
5028	4932	WerFault.exe	87
1876	4932	WerFault.exe	87
2780	4932	WerFault.exe	87
4980	4932	WerFault.exe	87
2244	4932	WerFault.exe	87
3956	4932	WerFault.exe	87
4324	4932	WerFault.exe	87
3604	4932	WerFault.exe	87
2112	4932	WerFault.exe	87
5024	4932	WerFault.exe	87
4628	4932	WerFault.exe	87
3740	4932	WerFault.exe	87
4732	4932	WerFault.exe	87
1836	4872	WerFault.exe	141
3568	4872	WerFault.exe	141
1888	4872	WerFault.exe	141

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4932 wrote to memory of 1248	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	112
PID 4932 wrote to memory of 1248	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	112
PID 4932 wrote to memory of 1248	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	112
PID 4932 wrote to memory of 4460	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	118
PID 4932 wrote to memory of 4460	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	118
PID 4932 wrote to memory of 4460	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	118
PID 4932 wrote to memory of 572	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	125
PID 4932 wrote to memory of 572	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	125
PID 4932 wrote to memory of 572	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	125
PID 4932 wrote to memory of 3620	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	131
PID 4932 wrote to memory of 3620	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	131
PID 4932 wrote to memory of 3620	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	131
PID 4932 wrote to memory of 1236	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	137
PID 4932 wrote to memory of 1236	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	137
PID 4932 wrote to memory of 1236	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	137
PID 4932 wrote to memory of 868	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	144
PID 4932 wrote to memory of 868	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	144
PID 4932 wrote to memory of 868	4932	b6202f30b837ad0025da86ecf9f5f1c9.exe	144
PID 4872 wrote to memory of 1612	4872	qmeebqpd.exe	152
PID 4872 wrote to memory of 1612	4872	qmeebqpd.exe	152
PID 4872 wrote to memory of 1612	4872	qmeebqpd.exe	152
PID 4872 wrote to memory of 1612	4872	qmeebqpd.exe	152
PID 4872 wrote to memory of 1612	4872	qmeebqpd.exe	152

C:\Users\Admin\AppData\Local\Temp\b6202f30b837ad0025da86ecf9f5f1c9.exe
"C:\Users\Admin\AppData\Local\Temp\b6202f30b837ad0025da86ecf9f5f1c9.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 596
  2⤵
  - Program crash
  PID:1620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 724
  2⤵
  - Program crash
  PID:3608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 724
  2⤵
  - Program crash
  PID:2784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 824
  2⤵
  - Program crash
  PID:4984
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 812
  2⤵
  - Program crash
  PID:1712
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 976
  2⤵
  - Program crash
  PID:4500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 988
  2⤵
  - Program crash
  PID:5028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 824
  2⤵
  - Program crash
  PID:1876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iferdxve\
  2⤵
  PID:1248
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 912
  2⤵
  - Program crash
  PID:2780
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 580
  2⤵
  - Program crash
  PID:4980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qmeebqpd.exe" C:\Windows\SysWOW64\iferdxve\
  2⤵
  PID:4460
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 1224
  2⤵
  - Program crash
  PID:2244
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 1196
  2⤵
  - Program crash
  PID:3956
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create iferdxve binPath= "C:\Windows\SysWOW64\iferdxve\qmeebqpd.exe /d\"C:\Users\Admin\AppData\Local\Temp\b6202f30b837ad0025da86ecf9f5f1c9.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:572
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 1276
  2⤵
  - Program crash
  PID:4324
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 1288
  2⤵
  - Program crash
  PID:3604
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description iferdxve "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:3620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 1344
  2⤵
  - Program crash
  PID:2112
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 1256
  2⤵
  - Program crash
  PID:5024
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start iferdxve
  2⤵
  - Launches sc.exe
  PID:1236
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 1296
  2⤵
  - Program crash
  PID:4628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 588
  2⤵
  - Program crash
  PID:3740
- 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:868
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 1036
  2⤵
  - Program crash
  PID:4732

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4932 -ip 4932
1⤵
PID:4608

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4932 -ip 4932
1⤵
PID:3472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4932 -ip 4932
1⤵
PID:2676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4932 -ip 4932
1⤵
PID:4740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4932 -ip 4932
1⤵
PID:4636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4932 -ip 4932
1⤵
PID:3356

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4932 -ip 4932
1⤵
PID:2836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4932 -ip 4932
1⤵
PID:5048

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4932 -ip 4932
1⤵
PID:1976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4932 -ip 4932
1⤵
PID:2012

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4932 -ip 4932
1⤵
PID:1764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4932 -ip 4932
1⤵
PID:3980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4932 -ip 4932
1⤵
PID:556

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4932 -ip 4932
1⤵
PID:1884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4932 -ip 4932
1⤵
PID:116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4932 -ip 4932
1⤵
PID:3428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4932 -ip 4932
1⤵
PID:1852

C:\Windows\SysWOW64\iferdxve\qmeebqpd.exe
C:\Windows\SysWOW64\iferdxve\qmeebqpd.exe /d"C:\Users\Admin\AppData\Local\Temp\b6202f30b837ad0025da86ecf9f5f1c9.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4872
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4872 -s 524
  2⤵
  - Program crash
  PID:1836
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:1612
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4872 -s 532
  2⤵
  - Program crash
  PID:3568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4872 -s 568
  2⤵
  - Program crash
  PID:1888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4932 -ip 4932
1⤵
PID:1956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4932 -ip 4932
1⤵
PID:232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4872 -ip 4872
1⤵
PID:468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4872 -ip 4872
1⤵
PID:1764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4872 -ip 4872
1⤵
PID:3928

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\qmeebqpd.exe

Filesize
10.3MB

MD5
2e0e424c4a700fb8797bfbc8f2cdb338

SHA1
6b02e7ae370abb0853e8c357211c047a794f6324

SHA256
5db817993ffbdf931b750fb3fa408f1238d21da7422b0c9750a4d34ac1a67fcc

SHA512
26e7bc05a5498844553e7834371c81d91fb1bb209801cf21b74bdfc755a0edf121355f582c93cf4ec6d1cc8e74b184a6e50e19fceba587899211a22cdd0fc1ef

Download Submit
C:\Windows\SysWOW64\iferdxve\qmeebqpd.exe

Filesize
7.1MB

MD5
469f3d88bd8bcd180aaa91a5e10d46cd

SHA1
b0ec8d3d5fdbe473b70984e60274f21da7dd7ff9

SHA256
88f32e147e340b151f876517183ffebc1e5df84e54f9e6daf8fa3470e1b6f81e

SHA512
e5a1b27bcb4d8882f65c4301fead16e2e91dfbd3d3ca6b0d8a1187b99d777a98582f17ce3ca1b87ef29ae9eebb8432ea13d9fb1f067282aa589aed5302a62fcb

Download Submit
memory/1612-12-0x0000000000E70000-0x0000000000E85000-memory.dmp

Filesize
84KB

Download
memory/1612-15-0x0000000000E70000-0x0000000000E85000-memory.dmp

Filesize
84KB

Download
memory/1612-16-0x0000000000E70000-0x0000000000E85000-memory.dmp

Filesize
84KB

Download
memory/1612-18-0x0000000000E70000-0x0000000000E85000-memory.dmp

Filesize
84KB

Download
memory/1612-19-0x0000000000E70000-0x0000000000E85000-memory.dmp

Filesize
84KB

Download
memory/4872-10-0x0000000003620000-0x0000000003720000-memory.dmp

Filesize
1024KB

Download
memory/4872-11-0x0000000000400000-0x0000000003359000-memory.dmp

Filesize
47.3MB

Download
memory/4872-17-0x0000000000400000-0x0000000003359000-memory.dmp

Filesize
47.3MB

Download
memory/4932-4-0x0000000000400000-0x0000000003359000-memory.dmp

Filesize
47.3MB

Download
memory/4932-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4932-7-0x0000000000400000-0x0000000003359000-memory.dmp

Filesize
47.3MB

Download
memory/4932-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4932-1-0x0000000003510000-0x0000000003610000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads