tofsee | 4c60bfe82bee8e9fba230f67fdd0d3f1866b1b108b0075d4ceb997f53a6b3a24

General

Target

b79e3ee1a65ad2cb3d8e6056ccd6f881.exe
Size

12.7MB
MD5

b79e3ee1a65ad2cb3d8e6056ccd6f881
SHA1

1876b78c93ad6a591bfca8f53cd34484a43eca3b
SHA256

4c60bfe82bee8e9fba230f67fdd0d3f1866b1b108b0075d4ceb997f53a6b3a24
SHA512

a71a2653b1a1a443377ec1671867bb03461127c841ebba4f1b49434601a0b65627f0f61de47cc019390618347fa79977a87b88290f96cecb994932d13c0d4f2e
SSDEEP

49152:FzCf1zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzH:M

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

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
4556	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\azwqanqv\ImagePath = "C:\\Windows\\SysWOW64\\azwqanqv\\hhiqwrtf.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe

Deletes itself 1 IoCs

pid	Process
2156	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3420	hhiqwrtf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3420 set thread context of 2156	3420	hhiqwrtf.exe	121

Launches sc.exe 3 IoCs

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

pid	Process
5084	sc.exe
4468	sc.exe
4392	sc.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4044	4460	WerFault.exe	94
4376	3420	WerFault.exe	113

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4460 wrote to memory of 500	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	102
PID 4460 wrote to memory of 500	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	102
PID 4460 wrote to memory of 500	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	102
PID 4460 wrote to memory of 4684	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	104
PID 4460 wrote to memory of 4684	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	104
PID 4460 wrote to memory of 4684	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	104
PID 4460 wrote to memory of 5084	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	107
PID 4460 wrote to memory of 5084	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	107
PID 4460 wrote to memory of 5084	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	107
PID 4460 wrote to memory of 4468	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	109
PID 4460 wrote to memory of 4468	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	109
PID 4460 wrote to memory of 4468	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	109
PID 4460 wrote to memory of 4392	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	111
PID 4460 wrote to memory of 4392	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	111
PID 4460 wrote to memory of 4392	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	111
PID 4460 wrote to memory of 4556	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	114
PID 4460 wrote to memory of 4556	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	114
PID 4460 wrote to memory of 4556	4460	b79e3ee1a65ad2cb3d8e6056ccd6f881.exe	114
PID 3420 wrote to memory of 2156	3420	hhiqwrtf.exe	121
PID 3420 wrote to memory of 2156	3420	hhiqwrtf.exe	121
PID 3420 wrote to memory of 2156	3420	hhiqwrtf.exe	121
PID 3420 wrote to memory of 2156	3420	hhiqwrtf.exe	121
PID 3420 wrote to memory of 2156	3420	hhiqwrtf.exe	121

C:\Users\Admin\AppData\Local\Temp\b79e3ee1a65ad2cb3d8e6056ccd6f881.exe
"C:\Users\Admin\AppData\Local\Temp\b79e3ee1a65ad2cb3d8e6056ccd6f881.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4460
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\azwqanqv\
  2⤵
  PID:500
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hhiqwrtf.exe" C:\Windows\SysWOW64\azwqanqv\
  2⤵
  PID:4684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create azwqanqv binPath= "C:\Windows\SysWOW64\azwqanqv\hhiqwrtf.exe /d\"C:\Users\Admin\AppData\Local\Temp\b79e3ee1a65ad2cb3d8e6056ccd6f881.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:5084
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description azwqanqv "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start azwqanqv
  2⤵
  - Launches sc.exe
  PID:4392
- 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:4556
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4460 -s 1240
  2⤵
  - Program crash
  PID:4044

C:\Windows\SysWOW64\azwqanqv\hhiqwrtf.exe
C:\Windows\SysWOW64\azwqanqv\hhiqwrtf.exe /d"C:\Users\Admin\AppData\Local\Temp\b79e3ee1a65ad2cb3d8e6056ccd6f881.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:2156
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3420 -s 512
  2⤵
  - Program crash
  PID:4376

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4460 -ip 4460
1⤵
PID:4596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 3420 -ip 3420
1⤵
PID:4404

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4032 --field-trial-handle=2900,i,14549994492153927475,12895178890800740987,262144 --variations-seed-version /prefetch:8
1⤵
PID:1580

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
10.2MB

MD5
c7d926d88d14101fb8b9e209744832f5

SHA1
1ed3360ce8fa575c2e5ddf45bf60c13a2e0d8d5a

SHA256
690b023dde3effc0031eb9beb640b874fff9b54abe378f64b298a97cbb83b104

SHA512
1865bd40c307ff25842e9b773fc0a6678c9253f55b5b7fbde120d72426fa93db067100467549f5907eb22525f1dce0771395b0660109fedb6ab329757fd78ec2

Download Submit
memory/2156-19-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download
memory/2156-18-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download
memory/2156-16-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download
memory/2156-13-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download
memory/3420-12-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/3420-17-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/3420-11-0x0000000000A60000-0x0000000000B60000-memory.dmp

Filesize
1024KB

Download
memory/4460-5-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/4460-9-0x0000000002630000-0x0000000002643000-memory.dmp

Filesize
76KB

Download
memory/4460-8-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/4460-1-0x0000000000A00000-0x0000000000B00000-memory.dmp

Filesize
1024KB

Download
memory/4460-4-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/4460-2-0x0000000002630000-0x0000000002643000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads