tofsee | 22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16

General

Target

22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe
Size

10.7MB
MD5

b68d1d16e51e6c79017a2374d6b072fb
SHA1

ed811cfa8711a4e34b37eac3e10d3530def45ff4
SHA256

22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16
SHA512

5a3f7acb9cd3bb29f588dcc524a048a9f9bb8cb553ff86044e8c2d682ceb541806a4b2d85818f09c5292de26b05063b77426cf5ac41824d2718ec64d56c686e8
SSDEEP

24576:xeOeLIO66666666666666666666666666666666666666666666666666666666n:Ze

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

Windows Service
T1543.003

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
3808	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\akifrqev\ImagePath = "C:\\Windows\\SysWOW64\\akifrqev\\oekdemcl.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-1-5-21-3350690463-3549324357-1323838019-1000\Control Panel\International\Geo\Nation	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe

Deletes itself 1 IoCs

pid	Process
5104	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4664	oekdemcl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4664 set thread context of 5104	4664	oekdemcl.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
2280	sc.exe
4900	sc.exe
3424	sc.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4896 wrote to memory of 4740	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	89
PID 4896 wrote to memory of 4740	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	89
PID 4896 wrote to memory of 4740	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	89
PID 4896 wrote to memory of 2268	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	91
PID 4896 wrote to memory of 2268	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	91
PID 4896 wrote to memory of 2268	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	91
PID 4896 wrote to memory of 2280	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	93
PID 4896 wrote to memory of 2280	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	93
PID 4896 wrote to memory of 2280	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	93
PID 4896 wrote to memory of 4900	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	96
PID 4896 wrote to memory of 4900	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	96
PID 4896 wrote to memory of 4900	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	96
PID 4896 wrote to memory of 3424	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	101
PID 4896 wrote to memory of 3424	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	101
PID 4896 wrote to memory of 3424	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	101
PID 4896 wrote to memory of 3808	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	103
PID 4896 wrote to memory of 3808	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	103
PID 4896 wrote to memory of 3808	4896	22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe	103
PID 4664 wrote to memory of 5104	4664	oekdemcl.exe	107
PID 4664 wrote to memory of 5104	4664	oekdemcl.exe	107
PID 4664 wrote to memory of 5104	4664	oekdemcl.exe	107
PID 4664 wrote to memory of 5104	4664	oekdemcl.exe	107
PID 4664 wrote to memory of 5104	4664	oekdemcl.exe	107

C:\Users\Admin\AppData\Local\Temp\22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe
"C:\Users\Admin\AppData\Local\Temp\22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\akifrqev\
  2⤵
  PID:4740
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oekdemcl.exe" C:\Windows\SysWOW64\akifrqev\
  2⤵
  PID:2268
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create akifrqev binPath= "C:\Windows\SysWOW64\akifrqev\oekdemcl.exe /d\"C:\Users\Admin\AppData\Local\Temp\22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2280
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description akifrqev "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4900
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start akifrqev
  2⤵
  - Launches sc.exe
  PID:3424
- 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:3808

C:\Windows\SysWOW64\akifrqev\oekdemcl.exe
C:\Windows\SysWOW64\akifrqev\oekdemcl.exe /d"C:\Users\Admin\AppData\Local\Temp\22e95da4d685cf7a8ca80be82b1a587da1094047cb200da81a61b44d515b6a16.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4664
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:5104

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

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
11.3MB

MD5
708c13f0796c08dabb5a3d94f160fb2e

SHA1
be304397383f1a3e213e176fc03793155bb761c6

SHA256
ff8229080bac3efcc33cc946912e1124b420bd700f9b94f3099bd502863edcad

SHA512
fc7803f080cc6080e2f5afdcd231980d5df09d88e041856b4ca912123988c2aa32e0d6151ce4d3b6efa1237d48d246d1f6a98165b6f16449b78b848d620d6dc8

Download Submit
C:\Windows\SysWOW64\akifrqev\oekdemcl.exe

Filesize
11.3MB

MD5
708c13f0796c08dabb5a3d94f160fb2e

SHA1
be304397383f1a3e213e176fc03793155bb761c6

SHA256
ff8229080bac3efcc33cc946912e1124b420bd700f9b94f3099bd502863edcad

SHA512
fc7803f080cc6080e2f5afdcd231980d5df09d88e041856b4ca912123988c2aa32e0d6151ce4d3b6efa1237d48d246d1f6a98165b6f16449b78b848d620d6dc8

Download Submit
memory/4664-11-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4664-8-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4896-3-0x00000000009D0000-0x00000000009D1000-memory.dmp

Filesize
4KB

Download
memory/4896-2-0x00000000009C0000-0x00000000009C1000-memory.dmp

Filesize
4KB

Download
memory/4896-6-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4896-1-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4896-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/5104-10-0x0000000000F60000-0x0000000000F75000-memory.dmp

Filesize
84KB

Download
memory/5104-14-0x0000000000F60000-0x0000000000F75000-memory.dmp

Filesize
84KB

Download
memory/5104-15-0x0000000000F60000-0x0000000000F75000-memory.dmp

Filesize
84KB

Download
memory/5104-16-0x0000000000F60000-0x0000000000F75000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads